3 If . 1 TA4R$?, Sci. Rep. Hokkaido Salmon Hatchery, (43) : 1 - 2 1 (1989)

Copepods in the Mountain Waters of HonshQ, Japan
Teruo ISHIDA*

The present report is based on a study of the harpacticoid copepods collected by Dr.
Tomiko Ito, Hokkaido Fish Hatchery (13 samples, April 1979 to October 1981) and on the
copepods of my own collection (46 samples, March 1986 to May 1988) gathered from themountain waters of Honshit, Japan. Having examined these specimens, I was able to determine
14 species of cyclopoids and 26 species of harpacticoids, of 20 of the harpacticoid species (Ishida1987) are common to Hokkaido, northern Japan. Our collection was mainly taken from thewaters in the coniferous forests, since the majority of primeval broad-leaved forests of themountainous region of Honsha have already been replaced by the plantations of conifers, mainly
sugi (Cryptomerza japonica) . Accordingly, the present result is biased in favour of the primary
copepod fauna found in Honshfi. In future, this bias must be corrected by collections takenfrom the waters in the broad-leaved forests which still remain. In the present paper, I try tosummarize the distribution of the species, and offer some illustrations for diagnosis.
The methods of sampling in the fields and sorting in the laboratory are same to those of theprevious report (Ishida 1987).
The following species were found in the samples examined :Cyclopoida
1. Macrocyclops fuscus (Jurine)
2. MacrocycZops albidus (Jurine)
3. Macrocyclops sp.
4. Eucyclops serrulatus (Fischer)
5. Paracyclops fimbriatus (Fischer)
6. Paracyclops aHin is (Sar s )7. Cyclops visinus Uljanin
8. Acanthocyclops vernalis (Fischer)
9. Diacyclops languidus (Sars)
10. Diacyclops languidoides (Lilljeborg)
11. Diacyclops crassicaudis (Sars)
12. Mesocyclops leuckarti (Claus)
13. Microcyclops varicans (Sars)
14. Speocyclops yezoensis Ito~d L i % 3 2 If . 1~..LW~H%%$E%314%* Present address : 372, Irifunecho Yoichimachi, Hokkaido 046 JAPAN1

Number of
localities
occupied

Total numberof individuals
obtained

9
2
15
17
16
2
1

19
5
57
265
51
2
1

4

24

2
1
1
1
2
10

3
1
2
1
2
17

IshidaHarpacticoida1. * Harpucticellu paradoxa (Brehm)
2. * Canthocamptus staphylinus (Jurine)
3. *Cunthocarnptus mirabilis Sterba
4. *Cunthocurnptus sp. 2**
5. Canthocamptus sp. 3
6. Canthocamptus sp. 4
7. Canthocamptus sp. 5
8. Canthocarnptus sp. 7
9. Attheyella coifluiti Chappuis
10. *Attheyella nakuii (Brehm)
11. *Attheyella crassa (Sars)
12. *Attheyella orientalis Chappuis
13. *Attheyella sp. M
14. *Attheyella nordenskjddii (Lilljeborg)
15. Attheyella sp. T
16. * Maraenobiotus vejdovskyi Mr5zek
17. *Muruenobiotus brucei (Richard)
18. *Moruriu duthiei (T. & A. Scott)19. *Morariu pop$ei (Mr5zek)
20. *Morariu verica (Graeter)
21. "Moraria sp. B
22. * B-ryocamptus zschokkei (Schmeil)
23. * Bryocumptus hiemalis (Pearse)
24. *Bryocamptus calvus (Brehm)
25. *Byyocumptus nivalis (Willey)
26. *Puracamptus reductus Wilson

2
3
4
30
13
20
2
1
2
51
6
6
12
1
2
1
3
1
2
6
5

72
31
183
3,074
732
1,065
62

44

652

1
51
3

8
1,329
6
1

1

5
16
1,541
73
13
33
1
2
1
4

3
3
11
5

* Synonymy lists and illustrations of species with asterisk are given in Ishida (1987).
* * The roman numeral used in Ishida (1987) was changed with Arabic after Kikuchi and

Ishida (1988).

Abbreviations : The following abbreviations are used in plates ; Pl-PS=legs 1-5, Enp.=
endopodite, Fu=caudal rami with a part of the abdomen, f=female, m=male.

List of Localities and the Species Obtained
No. 1. Yunotanimura, Niigata Pref. (37"13'N, 139"01'E), a spring seeping area, 1 April
1979. Canthocamptus sp. 2 40?, 17 2.
No. 2. Chilgfishi, Nikk6, Tochigi Pref. (36"44", 140"33'E), a small stream, 21 July, 1September, 24 November and 30 December 1979. Harpacticellu parudoxa 3 0 9 , 20 8 ; Cantho2

Copepods in Japanese Mountain Waters

camptus sp. 2 235? 49 8 ; Attheyella nakaii 69?, 34 8 ; A, orientalis 1? ; Bryocamptus calvus
5 ? , 18.
No. 3. &zumimura, Yamanashi Pref. (35"51'N, 138"22'E), a small spring stream, 28
December 1979. Canthocamptus sp. 2 5?, 5 8.
CanthoNo. 4. Kifune, Kyoto Pref. (35"06'N, 135"46'E), a small stream, 1 February 1981.
I

camptus sp. 5 2 ? , 2 8 ; Attheyella nordenskjddi 1?- ; Bryocamptus calvus 5?.
No. 5. J8etsushi, Niigata Pref. (37"05'N, 138"12'E), a small stream, 24 April 1981.
Canthocamptus mirabilis 29?, 28% ; Canthocamptus sp. 2 l'f ; Bryocamptus zschokkei 29 ; B.
calvus 189, 7 8 .
No. 6. okuwamura, Nagano Pref. (35"41'N, 137"41'E), a small stream, 26 April 1981.
Canthocamptus sp. 2 2 9 , 2 2 ; Canthocamptus sp. 4 6?, 13 8 ; Attheyella nakaii 15?, 118 ;Moraria sp. B 1 8 ; Bryocamptus zschokkei 4? ; B. calvus 41 ?, 6 8.
No. 7. Mikawamura, Niigata Pref. (37"43'N, 139"24'E), a small stream, 28 April and 29
June 1981. Canthocamptus sp. 2 36?, 54 8 ; Attheyella nakaii 32?, 12 8 ; Attheyella SP.M 2 ?
; Moraria sp. B 1? ; Bryocamptus zschokkei 2 ?, 18 ; B. calvus 38?, 5 8 ; B. nivalis 1? .
No. 8. Hanamaki-onsen, Iwate Pref. (39%3'N, 141"00'E), a small stream, 30 April 1981.
Canthocamptus mirabilis 5 3 ,18 ; Canthocamptus sp. 4 I ? , 18 ; Attheyella nakaii l?, 4 2 ;Bryocamptus zschokkei 49 ; B. calvus 15?, 2 8 .
No. 9. Futakuchi-onsen, Miyagi Pref. (38"16'N, 140"33'E), a small stream, 30 April 1981.
Canthocamptus sp. 2 29, 1 8 ; Attheyella nakaii 1?, 2 8 ; Moraria varica l ? ; Moraria SP. B 1
8 ; Bryocamptus zschokkei I ? ; B. calvus 89,18.
No. 10. Kajikawamura, Niigata Pref. (37"59'N, 139"21'E), a small stream, 27 June 1981.
Attheyella nakaii l o ? , 7 8 ; Moraria duthiei 2 ?, 12 ; M. varica Z? , 18 ; BryocaWtus Calvus 2? ; B. nivalis 49.
No. 11. Kurokawamura, Niigata Pref. (38"03'N, 139"28'E), a small stream, 19 September
1981. Canthocamptus sp. 2
2 0 8 ; Attheyella nakaii lo?, 6 2 ; A . crmsa l o ? , 5 8 ;Bryocamptus zschokkei 3? ; B. calvus 1179, 11 8 .
No. 12. Shibatashi, Niigata Pref. (37"57'N, 139"21'E), a small stream, 20 September 1981.

Canthocamptus sp. 2 13p, 5 8 ; Attheyella crmsa 2 ? ; Bryocamptzts calvus 9?, 2 8 .
No. 13. Hakusan, Ishikawa Pref. (36-153, 136"46'E), small streams, 6 October 1982.
Canthocamfitus sp. 3 1? , 1 8 ; Canthocamptus sp. 4 4 0 ? , 9 8 ; Attheyella nakaii 3?, 3 8 ; Moraria
sp. B 15 ; Bryocamptus calvus l ? .
No. 14. Tamarumachi, Miye Pref. (34"28'N, 136"39'E), a small stream, 15 March 1986.
Macrocyclops sp. 3? ; Paracyclops fimbriatus 2 ? , 1 8 / Canthocamptus sp. 2 227?, 78 8 ;Canthocamptus sp. 3 3 ? , 11 8 ; Canthocamptus sp. 4 2 ? ; Attheyella nakaii 132?, 378 ; A .
orientalis 1 ?, 1 8 ; Attheyella sp. M 2 ?, 18 ; Bryocamptus zschokkei 40?, 17 8 ; B. calvzts 57?

58.

No. 15. River Omiya, Shiga Pref. (35"04'N, 135"52'E), a stream, 17 March 1986. Macrocyclops sp. 3? I Canthocamptus sp. 3 85?, 31 8 ; Canthocamptus sp. 5 50?, 8 8 ; Attheyella
4 ?, 3 8 ; Bryocamptus zschokkei 5 ? , 3 8.
No. 16. Omachi, Nagano Pref. (36"36'N, 137"51'E), a small spring flowing to Lake
Nakatsuna, 25 May 1986. Canthocamptus sp. 2 29?, 218 ; Attheyella nakaii 119?, 258 ;3

IshidaAttheyella sp. M 3? ; Bryocamptus zschokkei 4 ? , 18 ; B. caluus 45?, 6 8 .
No. 17. amachi, Nagano Pref. (36"37", 137"51'E), a small inflow of Lake Aoki, 25 May
1986. Mucrocyclops fuscus 29 ; Eucyclops sermlutus 2 p ; Paracyclops fimbriutus 2 ? / Cunthocumptus stuphylinus 3?, 2 8 ; Cunthocamptus sp. 2 48?, 11 8 ; Attheyella nukuii l a ? , 3 $ ; A.
crassu 50?, 3 3 ; A. orientalis 2 ?, 1 8 ; Bryocumptus zschokkei 5?, 3 $ ; B. caluus 2 ? .
No. 18. Lake Aoki, Nagano Pref. (36"37'N, 137"51'E), the deepest bottom of Lake Aoki, 26
May 1986. Attheyella nukuii 2 ? , 6 % ; A. orientalis 4 ? .
No. 19. River Nippara, Okutama, Tokyo (35"49'N, 139"05'E), a small stream, 19 November
1986. Cantlaocamptus sp. 2 37?, 29 8 ; Attheyella nakuii 1 2 ? , 6 8 ; Muraenobiotus brucei 1? ;Bryocumptus zschokkei 16?, 7 8 ; B. culuus 2 ? , 1%; B. niualis l ? .
No, 20. Kokubunji, Tokyo (35"42'N, 139"30'E), a spring stream, 19 November 1986.
Eucyclops serrulutus 44 ?, 3 $ ; Parucyclops fimbriutus 1?, 1 8 / Harpacticella purudoxa 18?, 4 8; Canthocumptus sp. 2 17?, 18 ; Attheyella nukuii 4 ? , 13 8 ; Bryocamptus culuus 43?, 3 8 .
No. 21. Mt. Yamizo, Ibaraki Pref. (3654'N, 140"20'E),a small stream, 20 November 1986.
Cunthocamptus sp. 2 49, 18 ; Cunthocamptus sp. 7 2 ? ; Attheyella nakuii 2 ? ; Muraenobiotus
brucei 17 ; Bryocamptus zschokkei 5?, 2 8 ; B. culuus 35 8,6 8.
No. 22. Daigomachi, Ibaraki Pref. (36"48'N, 140"22'E), a small stream, 20 November 1986.
Macrocyclops fuscus 1? ; Eucyclops serrulatus 8 ? , 3 8 ; Paracyclops fimbriatus 1? , 2 8 ; P. ufinis
1? / Canthocamptus sp. 2 75?, 5 $ ; Moraria poppei 18 ; Bryocumptus zschokkei 6 ? , 4 % ; B.
calvus 13?, 1 2 .
No. 23. Yujimata-onsen, Fukushima Pref. (36"53", 140"29'E), a small stream, 20 November 1986. Cunthocamptus sp. 2 24?, 118 ; Attheyella nakuii 3?, 18 ; BryocamPtus zschokkei 5? ; B. culvus 5?.
No, 24. Shingamachi, Hydgo Pref. (34"55'N, 134"34'E), a small stream, 10 January 1987.
Macrocyclops fuscus I?, 2 8 ; Macrocyclops sp. 1? / Canthocamfitus sp. 3 9 9 , 2 8 ; Attheyellanakaii 4 ? , 2 % ; Bryocumptus zschokkei 2 2 ? , 8% ; B. caluus l l ? , 18.
No. 25. Mikazukimachi, Hydgo Pref. (35'00'N, 134"27'E), a small stream, 10 January 1987.
Canthocamptus sp. 3 209, 10 8 ; Attheyella nakaii 5?, 12 ; A. coflaaiti l o ? , 5 2 ; Attheyella SP.
M I?, 18 ; Bryocamptus zschokkei 5?, 3 8 ; B. caluus 5?, 1 2 .
NO. 26. Mikazukimachi, HyBgo Pref. (35"00'N, 134"27'E), a stream, 10 January 1987.

Mucrocyclops albidus 19, 1 % ; Eucyclops serrulatus l o ? , 3 % ; Paracyclops fimbriatus l ? ;Mesocyclops leuckarti 18 / Canthocumptus sstuphylinus 2 4 9 , 18 ; Canthocamptus sp. 3 281 ? , 98
% ; Attheyella nukaii 37?, 12 8 ; A. orientalis 1q , 18 ; Bryocumptus C U ~ V U S87?, 2 8 .
No. 27. amamachi, Aomori Pref. (41"27'N, 140"53'E), a small stream, 1 June 1987.
Eucyclops serrulatus l l ? , 28 ; Speocyclops yezoensis 2? / Canthocamptus sp. 2 13?, 1 7 % ;Bryocamptus zschokkei 4? ; B. calvus 39?, 3 8 .
EucycloPs
NO. 28. Hotokegaura, Aomori Pref. (4177'N,
140=49'E),a stream, 1 June 1987.
serrulatus 68 ; Speocyclops yezoensis 5? / Canthocamptus sp. 2 24?, 148 ; Attheyella nukuii 7
9, 1&' ; Bryocamptus zschokkei 29?, 13 8 ; B. culvw la?.
No. 29. Taneichimachi, Iwate Pref. (40"17'N, 141"45'E), a small stream, 2 June 1987.
Canthocumptus sp. 2 62?, 119 $ ; Attheyella nakaii 4 9 , 2 8 ; Bryocumptus culvus 7 ? .
No. 30. KujikeiryO, Iwate Pref. (40"11'N, 141"43'E), a trickle, 3 June 1987. Macrocyclops
4Copepods in Japanese Mountain Waters

18 / Canthocamptus sp. 2
664 ? , 393 2 ; Attheyella nakaii 43 9 , 31 8 ; Moraria varica 1? ; Bryocamptus zschokkei 25 ? , 7 8

fuscus; Paracyclops fimbriatus 2? ; Acanthocyclops vernalis 2 ? ,; B. calvus l o g ? , 2 1 2.

MacrocyNo. 31. Yamagatamura, Iwate Pref. (40"08'N, 141"33'E), a stream, 3 June 1987.
clops filscus 4 ? , 18 ; Eucyclops serrulatus 4 8 9 , 16 8 ; Acanthocyclops vernalis 1? ; Diacyclops
crassicaudis 2 ? / Canthocamptus sp. 2 69 9 , 46 8 ; Attheyella nakaii 9?, 9 8 ; A. CraSsa 18 ;Bryocamptus zschokkei 1 ? ; B. calvus 6?.
No. 32. Iwatemachi, Iwate Pref. (39"58'N, 141"20'E), a ditch, 3 June 1987. EuCYcloPS

serrulatus 12 ; Microcyclops varicans 1? / Canthocamptus sp. 2 2 ?, 2 2 ; Attheyella nakaii 4 ? ,5 2 ; Bryocamptus calvus 16?, 3 8 .
No. 33. Hanamakishi, Iwate Pref. (39"26", 141"16'E), a small stream, 3 June 1987.
Paracyclops fimbriatus 19 / Canthocamptus sp. 2 6?, 18 ; Attheyella nakuii 2 ? , 18 ;Bryocamptus zschokkei 3 ? , 2 8 ; B. calvus 2 ?.
No. 34. Wagamachi, Iwate Pref. (39"19'N, 140"52'E), a trickle, 3 June 1987. Eucyclops
sermlatus 50 ? , 112 ; Speocyclops yezoensis 3 / Canthocamptus mirabilis 93 ? , 26 2 ; Attheyellanakaii 40?, 2 7 % ; Moraria varica 1? ; Bryocamptus zschokkei S?, 28 ; B. calvus 5?, 28.
No. 35. Higashiyurimachi, Akita Pref. (39"21'N, 140"12'E), a small stream, 4 June 1987.
Macrocyclops fuscus l ? ; Eucyclops serrulatus l?, 18 ; Paracyclops fimbriatus l ? / Canthocamptus mirabilis; Canthocamptus sp. 2 1 6 9 , 14 8 ; Attheyella nakaii 25?, 118 ; A.

1sorientalis l ? ; Bryocamptus zschokkei 2s ; B. calvus 12?.
No. 36. Hinaimachi, Akita Pref. (40"12'N, 140"40'E), a small stream, 4 June 1987.
Macrocyclops fuscus 18 ; Diacyclops languidoides 1? ; Microcyclops varicans 1? ; Speocyclops
yezoensis/ Canthocamptus sp. 2 3? ; Attheyella nakaii; Bryocamptus calvus 7 ? .
EuCycloPs
No. 37. Lake towada, Akita Pref. (40"25'N, 140"54'E), shoreline, 4 June 1987.
serrulatus 1? ; Acanthocyclops vernalis 11? , 6 8 ; Diacyclops languidus 2 ? / Canthocamptus SP.
2 1?, 1 8 ; Attheyella sp. T 1 ? ; Attheyella nakaii 1? ; Maraenobiotus vejdovskyi 1? ; Moraria
sp. B 1? ; Bryocamptus zschokkei 3 ? .
No. 38. Oirasekeiryo, Aomori Pref. (40"32'N, 140"59'E), a small stream, 4 June 1987.

1s

1s

Eucyclops serrulatus l ? ; Acanthocyclops vernalis 3 2 / Canthocamptus sp. 2 l o ? , 3 8 ; Attheyellanakaii 2 ? , 2 2 ; Bryocamptus zschokkei 2 ? ; B. hiemalis 6?, 2 8.
No. 39. Chikatsu, Fukushima Pref. (36"58'N, 140"22'E), a small stream, 8 February 1988.
Macrocyclops fuscus 2 p ; M. albidus 2 ?, 1&' ; Macrocyclops sp. 1? , 18 ; EucycloPs seymlatus 36? , 3 8 ; Paracyclops fimbriatus 2 9 , 12 ; Speocyclops yezoensis 1? / Canthocamptus sp. 2 299 ? ,58 8 ; Attheyella nakaii 3 ?, 2 8 ; Attheyella sp. M 2 ? , 2 2 ; Bryocamptus zschokkei 5 ? , 1 2 ; B.
calvus 46 ? , 5 8.
No. 40. Mt. Yamizo, Ibaraki Pref. (36"53'N, 140"17'E), a trickle, 9 February 1988.
Macrocyclops sp. 67, 3 2 ; Eucyclops serrulatus 1P ; Paracyclops fimbriatus 2 ?, 12 / Caxthocamptus sp. 2 31 ?, 4 2 ; Canthocamptus sp. 7 l ? , 2 8 ; Attheyella nakaii 94?, 70 2 ; Attheyellasp. M a?, 2 8 ; Bryocamptus zschokkeip 25?, 16 8 ; B. calvus 1179, 21 8.
No. 41. Gozenyama, Ibaraki Pref. (36"31'N, 140"18'E), a stream, 9 February 1988.
Macrocyclops fuscus 2 ? , 18 ; Macrocyclops sp. 1? , 12 ; Paracyclops a f f n i s 1? / Canthocamptus
sp. 2 1 2 ? , 18 ; Canthocamptus sp. 3 96?, 8 2 ; Attheyella nukaii l ? ; Bryocamptus calvus 31?,5

Ishida38.

No. 42. Miyazu, Kyijto Pref. (35"29'N, 135"10'E), a small stream, 22 May 1988. Paracyclops fimbriatus 2 8 / Canthocamptus sp. 3 88,4 2 ; Canthocamptus SP. 4 20?, 2 8 ; Attheyellanakaii 13 ? , 2 8 ; Attheyella sp. M 3 ? , 2 8 ; Moraria uarica 1? ; Bryocamptus zschokkei 6 ? , 1 8; B. calum 4 ? , 1 8 .
No. 43. Oe, Kybto Pref. (35"26'N, 135"09'E), a small stream, 22 May 1988. Mucrocyclo~s
sp. 9?, 3 8 ; Paracyclops finzbriatus 1 / Canthocamptus sp. 3 12 ?, 18 ; Canthocarnotus sp. 4

18 ; Attheyella nakaii 23?, 16 8 ; Attheyella sp. M 19, 18 ; Bryocamptus zschokkei 1? ; B. caluusll?.

Macrocyclops
No. 44. Kutsukake, Kyijto Pref. (34"59", 135"39'E), a trickle, 22 May 1988.
sp. 19 ; Eucyclops seyrulatus 1? ; Paracyclops fimbriatus 7 ? , 6 8 ; Speocyclops yezoensis l ? /Canthocarnptus sp. 3 17p, 6 8 ; Attheyella nakaii 13?, 4 8 ; Bryocamptus zschokkei 69, 18 ; B.
caluus l o ? , 18.
Cyclops uicinza 1
No. 45. Imazu, Shiga Pref. (35"26'N, 136"01'E), a stream, 23 May 1988.

? / Canthocawaptus sp. 3 1 0 ? , 9 8 ; Canthocamptus sp. 4 20? 9 8 ; Attheyella sp. T 18 ; A. nakaii
12 T I 6 8 ; A. coiffaiti 1 8 ; A. crassa 1? ; Moraria uarica 4 ? ; Bryocamptus zschokkei 16?, 2 8; B . caluus 17?, 48.

No. 46. Osaki, Lake Biwa, Shiga Pref. (35"28'N, 136"07'E), a small stream, 23 May 1988.
Macrocyclops sp. 1? ; Paracyclops fimbriatus 3 'f , 3 8 / Canthocamptus sp. 4 22 ?, 7 3 ; Attheyellanakaii 68?, 26 ;5 ; Bryocamptus zschokkei 8 ? , 4 8 ; 3. calvus 23? 15 8.
No. 47. Kinomotomachi, Shiga Pref. (35"34'N, 136"16'E), a trickle, 23 May 1988. Mucrocy-

clops sp. 1? ; Speocyclops yezoensis 1? / Canthocamptus sp. 4 2 9 8 , 29 2 ; Attheyella nakuii 8 T ,3 3 ; AttJLeyella sp. M 3 ? , 18 ; Bryocamptus zschokkei 28?, 112 ; B. caluus 13?, 3 % ' .

No. 48. Sakauchimura, Gifu Pref. (35"36'N, 136"23'E), a trickle, 23 May 1988. M ~ C Y O C Y clops sp. 4 ? , 13 / Canthocamptus sp. 4 8 5 9 , 22 8 ; Attheyella nukaii 169, 5 8 ; Bryocamptus
zschokkei 14?, 5 8 ; B. CULUUS 7?.
No. 49. Kuzemura, Gifu Pref. (35"32'N, 136"30'E), a trickle, 23 Map 1988. Macrocyclops sp.
8 ?, 2 8 ; Eucyclops serrulatus 1? / Canthocamfitus sp. 4 2338, 53 8 ; Attheyella nakaii 6 ? , 2 8; Attheyella sp. M I ? ; Maraenobiotus bmcei l?, 18 ; Bryocamptus zschokkei S ? , 18 ; B. Calvus

14?, 28.
No. 50. Minamimura, gifu Pref. (35"36'N, 135"56'E), a small stream, 24 May 1988.
Macrocyclops sp. 1p / Canthocawaptus sp. 4 5 9 ; Attheyella nakaii 4 ? , 2 %' ; Bryocamptus

zschokkei 5 9 , 18 ; B. calvus 2 ? .
No. 51. Yamatomachi, Gifu Pref. (35"48'N, 136"54'E), a small stream, 24 May 1988.
Canthoca7nptus sp. 4 2 9 , 2 2 ; Attheyella nakaii 1? , 4 8 ; Moraria poppei 19,1 8 ; Bryocamptus
zschokkei 5 9 , 2 8 ; B. caluus 1? , 1 8.
No. 52. Shirotorimachi, Gifu Pref. (35'52'N, 136"50'E), a trickle, 24 May 1988. Macrocyclops sp. 3?, 28 / Canthocawaptus sp. 4 35?, 31% ; Attheyella nukuii l o ? ! 48 ; Bryocamptm
zschokkei 1 8 ; B. culuus 5 ? , 2 3 .
No. 53. Izumimura, Fukui Pref. (35"52'N, 136"46'E), a trickle, 24 May 1988. Canthocawaptus sp. 4 98?, 93 2 ; Attheyella nakaii 77?, 31 8 ; Attheyella sp. M 19 ; Moruriu poppei 1? ; Bryocamptus zschokkei 14?, 2 8 ; B . caluus 45?, 17 8.
6

Copepods in Japanese Mountain Waters

No. 54. Hatogayu-onsen, Fukui Pref. (36"00'N, 136"39'E), a trickle, 24 May 1988. Canthocamptus sp. 4 45 ?, 118 ; Attheyella nakaii 50?, 19 3 ; Bryocumptus zschokkei 88?, 22 2.
No. 55. Miyamamachi, Fukui Pref. (36"00'N, 136"26'E), a small stream, 25 May 1988.

Speocyclops yezoensis 1? / Canthocamptus sp. 4 2 ? ; Attheyella nakaii 4p , 12 ; Bryocamptus
zschokkei 20?, 4 8 ; B. calvus 2 ? ; Paracamptus reductus 19.
No. 56. Shimizumachi, Fukui Pref. (36"01'N, 136"06E), a small stream, 25 May 1988.
Diacyclops Languidus 1p / Canthocamptus staphylinus l y ; Canthocamptus sp. 3 2 ? , 58 ;Canthocamplus sp. 4 5 ?, 2 8 ; Attheyella nakaii 6?, 4 2 ; A. crassa 1? ; Bryocamptus zschokkei
1 3 9 ; B . culvus 4 ? .
No. 57. Echizenzaki, Fukui Pref. (35"58'N, 135"58'E),a small fall, 25 May 1988. Eucyclops; Speocyclops yezoensis I ? / Canthocamfitus SP. 3 2 2 ; CanthocawPtus SP. 4 66?,
serruLatus
29 8 ; Attheyella nakaii 2 ? , 2 8 ; Bryocamptus zschokkei 17 p , 2 3 ; B. calvus 2 9.
No. 58. KBnomura, Fukui Pref. (35"49'N, 136"06'E), a trickle, 25 May 1988. PurucycZo~sfimbriatus 3 9, 2 8 ; Speocyclops yezoensis 1? / Canthocamptus sp. 4 24?, 118 ; Attheyella nakaii
11 T I 7 8 ; AttheyeZlu sp. M 1y,1 %; Bryocamptus zschokkei 13?, 4 2 ; B. calvus l o ? , 2 8.
No. 59. Tsurugashi, Fukui Pref. (35"41'N, 136"05'E), a small stream, 25 May 1988.
Macrocyclops sp. 18 ; Paracyclops fimbriatus 3 p / Attheyella nakaii 11?, 6 8 ; Bryocawptus
zschokkei l ? ; B. caluus 13?.

Cyclopoida
1 . Macrocyclops sp(Plate 1)

Materials illustrated : Kuzemura. Gifu Pref., 23 May 1988.
Remarks : This species has been newly found in HonshQ, during the course of the present
study. It occurs in the middle and western parts of HonshQ, and in a northern insulated areaaround 36"40'N on the Pacific coast (Loc. No. 14, 15, 24, 39 to 52 and 59 ; figure 1-A). In theranges, the individuals are nearly always present in the mountain waters from trickles tostreams.

2. Speocyclnps yezoensis Ito, 1954

Speocyclops yezoensis Ito, 1954, p. 406.
Speocyclops yezoensis Ito. Ito 1960, p. 138.
Remarks : This species has previously been known in Japan as a subterranean copepod (Ito,1954 and 1960). During my research, I found that it occurred in running mountain waters,
especially in trickles, over a large part of Honshu (Loc. No. 27, 28, 34, 36, 44, 47, 55, 57 and 58; Figure 1-A).

7

IshidaHarpacticoida
1. Hurpacticellu purudoxu (Brehm)
Kemurks : The first record of this species in Japan was made by Ito and Kikuchi (1977) ofindividuals from the River Yukawa, NikkR, in the central part of HonshQ. It was also foundin our collection at NikkB (LOC.No. 2). During the survey, a new habitat was found in a springstream in Kokubunji-ato, Tokyo (LOC.No. 20). This spring is located at the foot of a terrace
scarp, where primeval dominant vegetation used to be evergreens.

2 . Cunthocamptus staphylinus (Jurine)
Remarks : During the survey, no specimens of Cunthocamptus stufihylinus were found in thewaters shaded by a thick canopy of trees. Their occurrence was seen only in waters at theforest edges and in streams with a sunny surface (LOC.No. 17, 26 and 56).

3 . Canthocumfitus mirubilis Sterba
Remarks : Until now, two distribution ranges of the Canthocumptus mirubilis have beenfound in HonshCi. As Figure 1-B shows, one of the ranges exists between about 39"20'N and 39"
3 0 " , and west of 141"E (LOC.No. 8, 34 and 35), while the other, a small one, exists near 37"N,138"E (LOC.No. 5). Within the ranges, excepting Loc. No. 35, the species occurred abundantly,
and predominated over the sympatric species Cunthocamptus sp. 2 or sp. 4. It has a wide rangeof habitat, such as puddles in valleys, seepage springs and moving waters from trickles tostreams. It does not, however, occur in lakes.

4 . Cunthocamptus sp. 2

Remarks : Kikuchi and Ishida (1988) have noted that Cunthocumptus sp. 2 is a widespread(Figure 1-B) occuring in an area extending from the southern part of Hokkaido to the central
part of HonshG and Mie Prefecture, western HonshQ (LOC.No. 1 4 ) . The species occurs inhabitats similar to those of the C. mirubilis.

5 . Cunthocamptus sp. 3(Plate 2)

Materials illustrated : Mikazukimachi, Hy6go Pref., 10 January 1987.
Remarks : In the western part of HonshQ, the predominant Cunthocumptus species isreplaced by Cunthocumptus sp. 3 (Kikuchi and Ishida 1988 ; Figure 1-B). Apart from its main
distribution range, an isolated patch of this species was found around Mt. Gozenyama, Ibaraki
Pref. (LOC.No. 41), where the species occurred abundantly and predominated over the8Copepods in Japanese Mountain Waters

A

A

O

A

A

Macrocyclops

SP.

Can thocamptus mi rab i l is
c.
sp. 2

c.
c.
c.
c.

AttheyellacoiffaitioAcrassa

sp. 3

*

A.

sp.

sp. 4
sp. 5

.

A.
A.

nordenskjoldii
sp. T

0

Bryocamptu tus

SP.

A

7

Fig. 1.

M

Distribution maps of noticeable copepods.
9

hiemalisIshidasympatric Canthocamptus sp. 2. Its habitats in the ranges are the same as those of C. mirabilis
and C. sp. 2.

6 . Canthocamptus sp. 4(Plate 3 )Materials illustrated : Kuzemura, Gifu Pref., 23 May 1988.
Remarks : This is a species newly found in Japan. Its major distribution range is restricted
to the border between central and western Honshu, especially in the northern areas (LOC.No.
6, 13, and 42-58 ; Figure 1-B). Within the range, the abundance of the species is high. The
species shows a sympatric distribution with Canthocamptus sp. 3 at the boundary zone of the
distribution area of each species. Besides its major range, the species seems t o be distributed
thinly and fragmentarily in HonshO (LOC.No. 8 ) .

7 . Canthocamptus sp. 5(Plate 4)

Materials illustrated : Kifune, Ky6to Pref., 1 February 1981.
Remarks : As was the case of Canthocamptus sp. 4, Canthocamptus sp. 5 has been newly
found in Japan as a result of my research. The occurrence is at present known only from asmall area north of Kybto City (Loc. No. 4 and 15 ; Figure 1-B). In the area it was foundabundantly in a small stream and a stream. The species is very similar to C. mirabilis. If
compared with the latter, however, its dwarf body is peculiar. The endemic presence and thesimilarity of the species to C. mirabilis suggest thtat the species might be an ancient relict of
C. mirabilis.

8 . Canthocamptus sp. 7(Plate 5)

Materials illustrated : Mt. Yamizo, Ibaraki Pref., female-20 November 1986, male-9 February 1988.
Remarks : As Kikuchi and Ishida (1988) have reported, Canthocamptus sp. 7 is a t present
known only among specimens from Mt. Yamizo in Ibaraki Prefecture (LOC.No. 21 and 40 ;Figure 1-B).
9 . Attheyella cozffaiti Chappuis, 1958
(Plate 6)

Attheyella coiffaiti Chappuis, 1958, p. 71
10

Copepods in Japanese Mountain Waters

Attheyella coreana Miura, 1969, p. 246.
Attheyella coiflaiti Chappuis. Miura, 1984, p. 525.
Materials illustrated : Mikazukimachi, Hy8go Pref., 10 January 1987
Remarks : During my survey, Attheyella cozffaiti was collected only from two localities (Loc.
No. 25 and 45 ; Figure 1-C). The poverty of the occurrence can be attributed to the few
sampling efforts made in the western part of HonshO, where the species is distributed widely as
a subterranean species (Miura 1984). As Miura (1969) has pointed out, it is closely related to
A. alaskaensis Wilson, 1958.

10. Attheyella nakaaii (Brehm)

Remarks : Attheyella nakaii is most widespread and abundant throughout HonshO. Its
habitats are mountain waters over a wide range, including lakes.

11. Attheyella crmsa (Sars)

Remarks : This species occurs sporadically in HonshQ (LOC.No. 11, 12, 17, 31, 45 and 56 ;Figure 1-C). Its apparence may depend on the microenvironments of its habitats. Springstreams by the forest edges may be one of its preferred habitats.
12. Attheyella orientalis Chappuis

Remarks : Attheyella om'entalis is a common species inhabiting both running and standing
waters with sunny surfaces, in other words, waters with vegetation. In this research, it
occurred at 6 localities (No. 2, 1 4 , 17, 18, 26 and 35).

13. Attheyella sp. M

Remarks : This species occurs frequently in the mountain waters of HonshO (Figure l-C) .

14. Attheyella nordenskjoldii ( Lillj e borg )Remarks : Only one individual of this northern species was caught with Canthocamfitus sp.
5 at a small stream, north of KyBto City (LOC.No. 4 ; Figure 1-C).

15. Attheyella sp. T(Plate 7 )Materials illustrated : Female-Lake Towada, Akita Pref., 4 June 1987, male-Imazu, Shiga
Pref., 23 May 1988.
11

IshidaRemarks : Only one famale and one male were found from two localities far from each other(Loc. No. 37 and 45 ; Figure 1-C) . There is some unconfirmed information which suggests that
this species may commonly occur in the western part of Honshii. The species is closely related
to A. illinoisensis (Forbes), (Coker 1934 and Reid 1987).

16. Maraenobiotus vejdovskyi Mr%zek

Remarks : Only one female was caught at the shore of Lake Towada (Loc. No. 37)

17. Maraenobiotus brucei (Richard)

Remarks : This species was found occasionally in small mountain streams (LOC.No. 19, 2 1
and 49).

18. Moraria duthiei (T. & A. Scott)Remarks : This species was found only at one locality (No. 1 0 ) . It seems to be rare in
Honshii.

19. Moraria poppei (Mrazek)

Remarks : Only 3 individuals of this species were found, at Loc. No. 22 and 51.

20. Morariu vurica (Graeter)

Remarks : Eleven individuals of the species were obtained at 6 localities (No. 9, 10, 30, 34,
42 and 45). It seems to be a widespread harpacticoid with low density of population.
21. Moraria sp. B

Remarks : Five individuals of this species (= Moraria sp. 2 by Kikuchi 1984) were found in
5 localities (No. 6, 7, 9, 13 and 37). These records indicate that the central part of HonshQ
should be added to its known distribution range in the northern HonshQ (Kikuchi 1984).

22. Bryocamptus zschokkei (Schmeil)

Remarks : This cosmopolitan is one of the commonest and most abundant species throughout HonshQ.
23. Biyocamptus hiemalis (Pearse)

Remarks : Eight individuals of this species were obtained from OirasekeiryQ near Lake

Copepods in Japanese Mountain Waters

Towada, northern HonshO (LOC.No. 38 ; Figure 1-C) . These individuals may belong to one of
the relict populations in Honshil..

24. Bryocamptus calvus (Brehm)

Remarks : Bryocamptus calvus is one of the most widespread and abundant species of the
harpacticoids throughout Honshfi (Ishida 1984).

25. Bryocamptus nivalis (Willey)

Remarks : The occurrence of Bryocamptus nivalis in HonshO is very low. It occurred inonly two localities (No. 7 and 10).

26. Paracamptus reductus Wilson
Remarks : Only one individual was obtained in the locality of central HonshQ (Loc. No. 55).
Paracarnptus nakarnurai Chappuis, probably synonymous to P. reductus, is known from western
HonshO as a subterranean copepod (Chappuis 1958 and Miura 1984).

Acknowledgements
I wish to pay special thanks to Dr. Tomiko Ito, Hokkaido Fish Hatchery, for the gift ofvaluable specimens, and Dr. Yoshiaki Kikuchi, Ibaraki University, for his kindly guidance forthe survey a t Mt. Yamizo, Ibaraki Prefecture, and the adjacent areas.

References
Chappuis, P. A. (1958) : Mission Franco-Japonaise dens les grottes du Japon. Harpacticoides
de la grotte dite Akiyoshi-Do. Notes Biospeol. 13, 71-83.
Coker, R. E. (1934) : Contribution to knowledge of North American freshwater harpacticoid
copepod Crustacea. Jour. Elisha Mitchell Sci. Soc. 50, 75-141.
Ishida, T. (1984) : On the distribution of the related three species of genus Bryocamptus(Copepoda, Harpacticoida) , in Hokkaido and Honshu, Japan. Sci. Rep. Hokkaido
Salmon Hutchey. (38), 43-49. (in Japanese with English Summary)
Ishida, T. (1987) : Freshwater harpacticoid copepods of Hokkaido, northern Japan. Sci. Rep.
Hokkaido Salmon Hatchely. ( 4 1 ) , 77-119.
Ito, T. (1954) : Cyclopoida copepods of Japanese subterranean waters. Rep. Fac. Fish. Pref:
Univ. Mie 1, 372-416.
Ito, T. (1960) : Groundwater copepods from the western part of Japan. ]a$. J. Limnol. 21,
131-140.
Ito, T. and Y. Kikuchi (1977) : On the occurrence of Harpacticella paradoxa (Brehm) in Japan; a freshwater harpacticoid copepod originaly described from a Chinese lake. Ann.
13

IshidaZO01. Jap. 50, 40‑56‑

Kikuchi, Y. (1984) : MOrphologicalcomparison
Of two terrestrial species Of MOraria (Cantho'
camptidae, Harpacticoida) from Japan, with the scanning electron microscope
Crustaceana Supplement ?, 279‑285.
Kikuchi, Y. and T. Ishida (1988) : On some freshwater harpacticoids from Japan, closely related
to Canthocamptns mirabilisSterba. Hydrobiologm 167/168,401‑407.
Miura, Y. (1969) : Results of the speleological survey

tn SOuth KOrea

1966 XIV.

Subterranean

harpacticoidcopepods Of SOuth KOrea. Bul1.Nat. Sci.Mus. 12, 241‑254.
Miura ， Y. (1984) :Nippon no rikusuisan Harpacticoida. N ゆゆ on/ChugokuTansu ぬ ianKm‑ 俗伽
rui,500‑563. (inJapanese)Reid, J. W. (1987) : Atfhe.ye.1la {Mrazekiella) spinipes, a new harpacticoidcopepod(Crustacea)
from ROck Creek Regional Park, Maryland. Proc. Bio1.SOc. Wash. 100, 694‑699.
Wilson, M. S. (1958) : NOrth American harpacticoidcopepods. 4. Diagnoses Of new species offresh‑water Canthocamptidae
and Cletodidae (genus Huntemannid}. Proc. Bio1.SOc.
Wash. 71, 43‑48.

本州の山地水域のかいあ
石

昭

田

し類

夫

本州山地水域かも採集された59 試料に含まれていたかいあ
し 頼について種の同 走と個体数の算定を rっイ

た。 えられた種はケンミジンコ
14 棟と，北海道との共通
撞20 俺をふくむソコミジンコ
2f 種である。 それぞれの種について，分布城，密度．
十思場所等についてのべた摘要と，木研究で新しく見出された種について Ishida(1987) と同じ形式で描いた図版をそえた。

?4

Copepods in Japanese Mountain Waters

Plate 1. Macrocyclops sp

15

IshidaPlate 2.

Canthocamfitus sp. 3

16

Copepods in Japanese Mountain Waters

Plate 3.

Cunthocumptus sp. 4
17

IshidaPlate 4.

Canthocurnptus sp. 5
18

Copepods in Japanese Mountain Waters-

0.I m mab- hPlate 5.

Canthocamptus sp. 7
1.9

IshidaPlate 6.

Attheyella cozflaiti Chappuis
20

Copepods in Japanese Mountain Waters

Plate 7.

Attheyella sp. T
21