Aculodes mongolicus Skoracka et Shi 2001, sp. nov.
Creators: name: Skoracka, Anna
name: Shi, Aoxiang
name: Pacyna, Anna
Publisher: name: Zenodo
Year: 2001
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Eriophyidae
Aculodes
Aculodes mongolicus

description: <i>Aculodes mongolicus</i> Skoracka <i>et</i> Shi sp. nov. <i>Description</i> <i>Female</i> (Figs 1­5) (holotype and 9 paratypes): body length 204 (197­257); width 59 (59­63); body spindleform. Gnathosoma 22 (22­28) long; dorsal pedipalpal genual setae <i>d</i> 12 (10­12) long; <i>v</i> setae 2 long; <i>ep</i> seta 4 (3­4) long; cheliceral stylets 23 (24­27) long, almost straight. Prodorsal shield triangular, 46 (42­46) long, 43 (42­44) wide, with pronounced, elongated and pointed frontal lobe over the gnathosoma; median line present in the posterior ½ part of the shield; admedian lines entire, parallel to each other, in the posterior ½ part of the shield diverging to lateral margins; I submedian lines subparallel to admedian, running laterad just in front of tubercles <i>sc</i>; II submedian lines beginning from 1 / 3 I submedian lines and forming bows reaching posterior margin of shield. Triangular microtubercles present on the shield, often along lines. Tubercles <i>sc</i> large, located on the rear margin of shield, 4 (4) long, 4 (4) wide, 29 (26­29) apart; setae <i>sc</i> 45 (42­45) long, projecting to the rear. Leg I 37 (36­43) long; femur 12 (10­12) long, with seta <i>bv</i> 16 (14­18) long; position of the seta <i>bv</i> 5 (4­5) from the ventral, proximal margin of femur; genu 6 (5­7) long, with seta <i>l’’</i> 29 (29­32) long, position of the seta <i>l’’</i> 4 (3­4) from the dorsal, proximal margin of genu; tibia 10 (9­10) long, with seta <i>l’</i> 10 (10­12) long; position of the seta <i>l’</i> 5 (4­5) from the ventral, proximal margin of tibia. Tarsus 7 (8­9) long, with three setae: <i>ft’’</i> 30 (28­33), <i>ft’</i> 24 (24­29) long, <i>u’</i> 7 (7­9) long; tarsal solenidion 10 (10­11) long; tarsal empodium simple, 8 (7­8)­rayed, symmetrical, 12 (11­13) long. Leg II 36 (36­40) long; femur 11 (10­ 12) long, with seta <i>bv</i> 24 (19­26) long; position of the seta <i>bv</i> 5 (5) from the ventral, proximal margin of femur; genu 5 (5­6) long, with seta <i>l’’</i> 17 (16­19) long; position of the seta <i>l’’</i> 3 (3­4) from the dorsal, proximal margin of genu; tibia 8 (6­8) long. Tarsus 8 (7­8) long, with three setae: <i>ft’’</i> 29 (28­30) long, <i>ft’</i> 13 (12­14), <i>u’</i> 6 (6­9) long; tarsal solenidion 11 (11­13) long; tarsal empodium 8 (7­8)­rayed, symmetrical, 13 (11­13) long. Coxae with a pattern of numerous, short lines, coxae II with triangular microtubercles along lines; tubercles <i>1 b</i> 10 (10­12) apart, setae <i>1 b</i> 11 (10­16) long; tubercles <i>1a</i> 9 (8­10) apart, setae <i>1a</i> 29 (24­33) long; tubercles <i>2a</i> 25 (24­28) apart, setae <i>2a</i> 48 (42­53) long; distance between tubercles <i>1 b</i> and <i>1a</i> 9 (8­9), distance between tubercles <i>1 a</i> and <i>2a</i> 9 (8­ 9). Opisthosoma with 64 (56­62) dorsal annuli, 74 (61­70) ventral annuli, 8 (5­7) coxogenital annuli. Annuli with microtubercles; dorsal microtubercles triangular, minute, close to each other, located on the margin of annuli; ventral microtubercles triangular but more pointed and larger than dorsal, located at a distance of margin of annuli, from the level of setae <i>f</i> elongated. Setae <i>c 2</i> 46 (40­47) long, located on 9 th (8 th­ 9 th) ventral annulus from coxae II; tubercles <i>c 2</i> 53 (49­58) apart; ventral setae <i>d</i> 61 (59­68) long, located on 22 nd (20 th ­ 22 th) ventral annulus; tubercles <i>d</i> 38 (38­41) apart; setae <i>e</i> 40 (30­38) long, located on 39 nd ventral annulus (33­40); tubercles <i>e</i> 16 (15­18) apart; setae <i>f</i> 27 (24­33) long, located on 70 th (57 rd– 66 nd) ventral annulus, 5 th (5 th) annulus from the rear; tubercles <i>f</i> 19 (18­25) apart. Setae <i>h 1</i> 5 (4­5) long, 7 (7­8) apart; setae <i>h 2</i> 72 (79­89) long, 10 (11­12) apart; distance between <i>h 1</i> and <i>h 2 –</i> 3 (2­3). Genital parts 14 (14­17) long, 24 (22­24) wide, genital coverflap with 10 (10­11) longitudinal striae; setae <i>3a</i> 38 (38­48) long, 16 (16­19) apart. <i>Male</i> (Fig. 6) (9 specimens): body length (162­209), width (48­56), spindleform. Gnathosoma (19­24) long; dorsal pedipalpal genual seta <i>d</i> (9­12) long; <i>v</i> setae (2) long; <i>ep</i> setae (3­4) long; chelicerae (20­26) long, almost straight. Prodorsal shield triangular, (39­ 43) long, (38­44) wide, with pronounced, elongate and pointed frontal lobe over the gnathosoma; pattern of the shield similar to that of a female. Tubercles <i>sc</i> large, located on the rear margin of the shield, (4) long, (4) wide, (25­29) apart; setae <i>sc</i> (29­38) long, projecting to the rear. Leg I (34­41) long; femur (10) long, with seta <i>bv</i> (12­15) long; position of the seta <i>bv</i> (4­5) from the ventral, proximal margin of femur; genu (5­6) long, with seta <i>l’’</i> (25­30) long; position of the seta <i>l’’</i> (3­4) from the dorsal, proximal margin of genu; tibia (7­8) long, with seta <i>l’</i> (10­12) long; position of the seta <i>l’</i> (4) from the ventral, proximal margin of tibia. Tarsus (7­9) long, with three setae: <i>ft’’</i> (26­30), <i>ft’</i> (21­23) long, <i>u’</i> (6­8) long; tarsal solenidion (9­11) long, slightly curved; tarsal empodium simple, (7­8)­rayed, symmetrical, (10­12) long. Leg II (30­35) long; femur (10) long, with seta <i>bv</i> (18­23) long; position of the seta <i>bv</i> (4­5) from the ventral proximal margin of femur; genu (5­6) long, with seta <i>l’’</i> (12­16) long; position of the seta <i>l’’</i> (3) from the dorsal, proximal margin of genu; tibia (6­7) long. Tarsus (7­8) long, with three setae: <i>ft’’</i> (23­28) long, <i>ft’</i> (10­13), <i>u’</i> (6­7) long; tarsal solenidion (10­12) long, almost straight; tarsal empodium (7­8)­rayed, symmetrical, (10­11) long. Coxae with a pattern of short lines with triangular and subrounded microtubercles; coxae I connecting medially; tubercles <i>1 b</i> (10­11) apart, setae <i>1 b</i> (8­14) long; tubercles <i>1 a</i> (7­10) apart, setae <i>1 a</i> (19­24) long; tubercles <i>2 a</i> (21­24) apart, setae <i>2 a</i> (42­48) long; distance between tubercles <i>1 b</i> and <i>1 a</i> (8), distance between tubercles <i>1 a</i> and <i>2 a</i> (7­9). Opisthosoma with (51­56) dorsal annuli, (55­62) ventral annuli, (5­6) coxogenital annuli. Annuli with microtubercles, their size and shape similar to that of female. Setae <i>c 2</i> (36­43) long, located on (8 th­ 9 th) ventral annulus from coxae II; tubercles <i>c 2</i> (40­48) apart; ventral setae <i>d</i> (44­64) long, located on (16 th­ 19 nd) ventral annulus; tubercles <i>d</i> (31­35) apart; setae <i>e</i> (20­33) long, located on (29 th ­ 34 th) ventral annulus; tubercles <i>e</i> (13­17) apart; setae <i>f</i> (21­29) long, located on (51 st­ 58 th) ventral annulus, (5 th) annulus from the rear; tubercles <i>f</i> (19­24) apart. Setae <i>h 1</i> (4­6) long, (6­8) apart; setae <i>h 2</i> (52­68) long, (10­11) apart; distance between <i>h 1</i> and <i>h 2 –</i> (2­3). Genital parts (14­17) long, (22­26) wide; setae <i>3 a</i> (24­29) long, (17­19) apart. <i>Nymph</i> (Figs. 7, 8) (4 specimens): body length (147­205), width (48­52); spindleform. Gnathosoma (17­22) long; dorsal pedipalpal genual seta <i>d</i> (7­10) long; <i>v</i> setae (2­3) long; <i>ep</i> setae (3) long; chelicerae (19­22) long. Prodorsal shield (38­40) long, (38­40) wide; triangular, with a little pointed lobe over the gnathosoma; all lines not reaching to posterior margin of the shield; median line only in the rear part of shield; admedian lines parallel to each other, diverging posteriorly the lateral margin of the shield; I submedian lines parallel to admedian; II submedian lines beginning in 1 / 3 form anterior margin, parallel to lateral marins of the shield; some triangular microtubercles present on the shield. Tubercles of setae <i>sc</i> (3­4) long, (4) wide, located on rear margin of the shield, (20­24) apart; setae <i>sc</i> (18­23) long. Leg I (28­32) long; femur (8) long, with seta <i>bv</i> (8­11) long; position of the seta <i>bv</i> (4) from the ventral, proximal margin of femur; genu (4­5) long, with seta <i>l’’</i> (20­24) long; position of the seta <i>l’’</i> (2­3) from the dorsal, proximal margin of genu; tibia (5­6) long, with seta <i>l’</i> (7­10) long; position of the seta <i>l’</i> (2­3) from the ventral, proximal margin of tibia. Tarsus (5­6) long, with three setae: <i>ft’’</i> (17­25), <i>ft’</i> (17­24) long, <i>u’</i> (5­6) long; tarsal solenidion (7­8) long; tarsal empodium simple, (6­7)­rayed, symmetrical, (8­10) long. Leg II (25­27) long; femur (8) long, with seta <i>bv</i> (12­15) long; position of the seta <i>bv</i> (4) from the ventral, proximal margin of femur; genu (4­5) long, with seta <i>l’’</i> (10­11) long; position of the seta <i>l’’</i> (2­3) from the dorsal, proximal margin of genu; tibia (4­5) long. Tarsus (6) long, with three setae: <i>ft’’</i> (19) long, <i>ft’</i> (9­10), <i>u’</i> (4­5) long; tarsal solenidion (8­10) long; tarsal empodium (6­7)­rayed, symmetrical, (7­9) long. Coxae with a pattern of slender microtubercles; coxae I connecting medially; tubercles <i>1 b</i> (10­11) apart, setae <i>1 b</i> (8) long; tubercles <i>1 a</i> (8) apart, setae <i>1 a</i> (15­18) long; tubercles <i>2 a</i> (21­25) apart, setae <i>2 a</i> (35) long; distance between tubercles <i>1 b</i> and <i>1 a</i> (8­11), distance between tubercles <i>1 a</i> and <i>2 a</i> (7­8). Opisthosoma with (51­57) dorsal annuli, (49­55) ventral annuli. Annuli with dorsal microtubercles triangular, minute; ventral annuli with microtubercles larger and more pointed than ones. Setae <i>c 2</i> (19­28) long, located on (6 th ­ 10 th) ventral annulus from coxae II; tubercles <i>c 2</i> (45­51) apart; ventral setae <i>d</i> (31­45) long, located on (14 th ­ 21 st) ventral annulus; tubercles <i>d</i> (20­38) apart; setae <i>e</i> (16­26) long, located on (25­32) ventral annulus; tubercles <i>e</i> (12­16) apart; setae <i>f</i> (14­19) long, located on (41 st ­ 51 st) ventral annulus, (5 th) annulus from the rear; tubercles <i>f</i> (19­21) apart. Setae <i>h 1</i> (4) long, (6) apart; setae <i>h 2</i> (65) long, (9­10) apart; distance between <i>h 1</i> and <i>h 2</i> (2). Setae <i>3 a</i> (11­16) long, (10­12) apart. <i>Larva</i> (Fig. 9) (1 specimen): body length (121), width (43); spindleform. Cheliceral stylets (19) long. Prodorsal shield (33) long, (35) wide; triangular; median and admedian lines similar to that of nymph; I submedian lines present only in the anterior part of shield, II submedian lines not present. Tubercles of setae <i>sc</i> (3) long, (5) wide located at a distance of posterior margin of the shield, (14) apart; setae <i>sc</i> (14) long, converging to each other. Leg I (29) long; femur (9) long; genu (4) long, with seta <i>l’’</i> (15) long; position of the seta <i>l’’</i> (2,5) from the dorsal, proximal margin of genu; tibia (4) long, with seta <i>l’</i> (12) long; position of the seta <i>l’</i> (2) from the ventral, proximal margin of tibia. Tarsus (5) long, with three setae: <i>ft’’</i> (18), <i>ft’</i> (15) long, <i>u’</i> (5) long; tarsal solenidion (7) long, tarsal empodium 6 ­ rayed, symmetrical, (8) long. Leg II (26) long; femur (6) long, with seta <i>bv</i> (10) long; position of the seta <i>bv</i> (3) from the ventral, proximal margin of femur; genu (3) long; tibia (3) long. Tarsus (5) long; tarsal solenidion (8) long; tarsal empodium 6 ­rayed, symmetrical, (6) long. Tubercles <i>1 a</i> (8) apart; tubercles <i>2 a</i> (19) apart; distance between tubercles <i>1 a</i> and <i>2 a</i> (7). Opisthosoma with (37) dorsal annuli, (23) ventral annuli. Dorsal microtubercles triangular but not pointed, minute; ventral microtubercles more rounded, at a distance of the margin of annuli. Setae <i>c 2</i> (21) long, located on (7 th)ventral annulus from coxae II; tubercles <i>c 2</i> (21) apart; ventral setae <i>d</i> (18) long, located on (13 th) ventral annulus; tubercles <i>d</i> (11) apart; setae <i>e</i> (10) long, located on (19) ventral annulus; tubercles <i>e</i> (25) apart; setae <i>f</i> (18) long, located on (30 th) ventral annulus, (5 th) annulus from the rear; tubercles <i>f</i> (39) apart. Setae <i>h 1</i> (5) apart, setae <i>h 2</i> (9); distance between <i>h 1</i> and <i>h 2 –</i> (3). Setae <i>3 a</i> (8) long, (5) apart. <i>Etymology:</i> The specific name is derived from the country where this mite was found (+ <i>icus</i>, Greek, meaning pertaining to). <i>Host plant: Hordeum brevisubulatum</i> (Trin.) Link (Poaceae). <i>Relation to host plant:</i> Mites are vagrants on the upper leaf surface. <i>Type locality</i>: Central Mongolia, Arkhangay Aymag, Horgo Terhiyn Tsagaan Nuur National Park; forest­steppe zone; 21.07.2000; leg. A. Skoracka; 12 females, 18 males, 5 nymphs. <i>Material examined:</i> Holotype female, 9 female paratypes, 9 male, 4 nymph, 1 larva paratypes. <i>Other hosts and localities</i> <i>Agropyron cristatum</i> (L.) P. Beauv; <i>Poa ochotensis</i> Trin.; Central Mongolia, Arkhangay Aymag, near bridge over Suman river, rocky riverside; 15.07.2000; leg. A. Skoracka; 46 females, 2 males, 4 nymphs on <i>P. ochotensis</i>, 4 females, 1 male, 3 nymphs on <i>A. cristatum</i>; <i>Deschampsia caespitosa</i> (L.) P. Beauv.; Central­North Mongolia, Bulgan Aymag, near Bugat locality, meadow steppe near larch and birch forest, elevation 1300 m.; 4.08.2000; leg. A. Skoracka; 3 females; <i>Koeleria macrantha</i> (Ledeb.) Schult., <i>Elymus secalinus</i> (Georgi) Bobr. Central Mongolia, Arkhangay Aymag, Horgo Terhiyn Tsagaan Nuur National Park; Tarvagatay Mountains, forest­steppe zone, elevation 2500 m.; 19.07.2000; leg. A. Skoracka; 2 females on <i>K. macrantha</i>, 5 females, 4 males on <i>E. secalinus</i>; <i>Poa attenuata</i> Trin.; North Mongolia, Hovsgol Nuur National Park, 25 km N­NW from Hatgal locality, elevation 2520 m.; 29.07.2000; leg. A. Labrzycka; 7 females, 1 male, l larva. <i>Differential diagnosis</i> <i>Aculodes mongolicus</i> is most similar to <i>Aculodes mckenziei</i> (Keifer 1944) by triangular prodorsal shield with anterior lobe pointed and the length of <i>sc</i> setae (43 m in <i>A. mckenziei</i>, 45 m in <i>A. mongolicus</i>). <i>A. mongolicus</i> can be distinguished from <i>A. mckenziei</i> by body shape, which is vermiform in <i>A. mckenziei</i> and more spindleform in the new species. The two species differ also in the length of gnathosoma (35 m in <i>A. mckenziei</i>, 22 m in <i>A. mongolicus</i>), length of <i>3 a</i> setae (25 m in <i>A. mckenziei</i>, 38 m in <i>A. mongolicus</i>), length of <i>e</i> setae (26 m in <i>A. mckenziei</i>, 40 m in <i>A. mongolicus</i>), prodorsal shield pattern (shape of submedian lines) and in the proportion of length of tibia II to tarsus II (0.75 in <i>A. mckenziei</i>, 1 in <i>A. mongolicus</i>). In addition, dorsal and ventral mirotubercles are similar in shape and dimensions in <i>A. mckenziei</i>, whereas in <i>A. mongolicus</i> ventral microtubercles are larger and more pointed than dorsal ones.
description: Published as part of <i>Skoracka, Anna, Shi, Aoxiang &amp; Pacyna, Anna, 2001, New eriophyoid mites (Acari: Eriophyoidea) associated with grasses from Mongolia, pp. 1-18 in Zootaxa 9</i> on pages 2-11, DOI: 10.5281/zenodo.4620032
description: {"references": ["Keifer, H. H. (1944) Eriophyid Studies XIV. State Bureau of Entomology, California Department of Agriculture, 33, 18 - 38."]}