Homoneura (Homoneura) henanensis Yang, Zhu & Hu 1999
Creators: name: Gao, Xuefeng
name: Shi, Li
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Lauxaniidae
Homoneura
Homoneura henanensis

description: Key to separate forty species in the Homoneura (Homoneura) henanensis group
[Modified from Shi et al., 2017, inserting the nine new species into the key]
1. Wing with brown spot at tip of Sc and R 1 slightly elongating to costal margin (see Shatalkin, 2000: fig. 28); surstylus claviform with 3 long setulae, postgonite long coniform with 5 short setulae (see Sasakawa, 1982: fig. 4)................................................................................................... H. (H.) hirayamae (Matsumura)
- Wing without brown spot at tip of Sc and R 1 ................................................................ 2
2. Basal edge of brown apical spot on R 2+3 at same vertical level of crossvein dm-cu (Fig. 7)............................ 3
- Basal edge of brown apical spot on R 2+3 behind vertical level of crossvein dm-cu (Fig. 40)........................... 9
3. Palpus yellow except for black at tip; surstylus broad, sheet-like with short apical setulae in lateral view and curved apically in posterior view (see Shi & Yang, 2014: figs 92, 94)................................ H. (H.) dadongshanica Shi & Yang
- Palpus entirely yellow; surstylus not as above............................................................... 4
4. Subcostal cell hyaline or pale yellow...................................................................... 5
- Subcostal cell brown apically............................................................................ 6
5. Mesonotum with acrostichal setulae in 8 rows; ctenidium with 14 short setae on fore femur; surstylus with a small acute teethlike process in lateral view (see Gao & Yang, 2004a: Fig. 8)............................... H. (H.) brevis Gao & Yang
- Mesonotum with acrostichal setulae in irregular 10 rows (Fig. 4); ctenidium with 17 short setae on fore femur; surstylus long and furcated in lateral view (Fig. 8).................................................. H. (H.) anadequata sp. nov.
6. Arista with longest ray slightly shorter than 1/2 height of 1st flagellomere (Fig. 26); mesonotum with acrostichal setulae in irregular 6 rows (Fig. 27); surstylus with a small triangluar process with several setulae in lateral view (Fig. 30)....................................................................................... H. (H.) dagupingensis sp. nov.
- Arista with longest ray almost as long as height of 1st flagellomere; mesonotum with acrostichal setulae in irregular 8−10 rows; surstylus not as above.................................................................................. 7
7. Arista with longest ray shorter than height of 1st flagellomere; ctenidium with 19 short setae on fore femur; surstylus consisting of a wide knife-like process with many short ventral hairs and a triangular process, incurved apically (Shi et al., 2017: figs 35, 39)....................................................................... H. (H.) stepheni Shi, Gao & Shen
- Arista with longest ray as long as height of 1st flagellomere; ctenidium with 11−16 short setae on fore femur; surstylus not as above............................................................................................... 8
8. Mesonotum with acrostichal setulae in irregular 10 rows; ctenidium with 13−16 short setae on fore femur; surstylus short and broad, with a row of long apical setulae (Shi et al., 2017: figs 5, 9)................. H. (H.) jiangxiensis Shi, Gao & Shen
- Mesonotum with acrostichal setulae in irregular 8 rows (Fig. 82); ctenidium with 10−11 short setae on fore femur; surstylus with a short bar-like process in lateral view and a subapical concavity (Fig. 87)............. H. (H.) similicurvata sp. nov.
9. Basal edge of brown apical spot on R 2+3 at same vertical level of apical spot on R 4+5; apical spot on R 4+5 close to brown spot on crossvein dm-cu or at least 2/3 length of ultimate section of M 1 ................................................ 10
- Basal edge of brown apical spot on R 4+5 behind vertical level of apical spot on R 2+3; apical spot on R 4+5 far from brown spot on crossvein dm-cu and shorter than 2/3 length of ultimate section of M 1 ........................................... 13
10. Apical spot on R 4+5 close to brown spot on crossvein dm-cu; ctenidium with 16 short setae on fore femur; surstylus acute apically in lateral view; pregonite absent; postgonite consisting of a bifurcated process and a subuliform process in ventral view (see Shi & Yang, 2014: figs 102, 105)............................................. H. (H.) denticulata Shi & Yang
- Apical spot on R 4+5 about 2/3 length of ultimate section of M 1, not close to brown spot on crossvein dm-cu; ctenidium with 12- 14 short setae on fore femur; surstylus blunt apically in lateral view, pregonite with a reverse U-shaped process and postgonite consisting a pair of subuliform processes in ventral view..................................................... 11
11. Hypandrium with a short ventral process; pregonite with a pair of reverse U-shaped process in ventral view; postgonite short subuliform, but pregonite longer than postgonite in ventral view............................................... 12
- Hypandrium with a long ventral process; shape of pregonite and postgonite as above, but pregonite shorter than postgonite in ventral view (see Shi & Yang, 2014: figs 198, 199)............................. H. (H.) pseudograndis Papp & Gaimari
12. Phallus with a pair of lateral teeth subapically in ventral view; two arms of reverse U-shaped pregonite asymmetrical distinctly (see Shi & Yang, 2014: figs 258, 259)............................................. H. (H.) simigrandis Shi & Yang
- Phallus without a pair of lateral teeth subapically in ventral view; two arms of reverse U-shaped pregonite almost symmetrical in length (see Papp & Gaimari, 2013: fig. 14)............................................ H. (H.) grandis (Kertész)
13. Wing with brown string-like spot on R 2+3 and apical spots on R 4+5 and M 1; epandrium slender and surstylus acute apically with a long seta in lateral view (see Gao & Yang, 2003: figs 6, 7)........................... H. (H.) curvispina Gao & Yang
- Wing with round, elliptical or quadrate spot on R 2+3, R 4+5 and M 1, not as above; epandrium and surstylus not as above..... 14
14. Wing with brown apical spots on R 2+3, R 4+5 and M 1 entirely confluent, or slightly confluent and forming pale brown connecting area between apical spots on R 2+3, R 4+5 and M 1 .............................................................. 15
- Wing with brown apical spots on R 4+5 and M 1 confluent, separated from apical spot on R 2+3, or apical spots on R 2+3, R 4+5 and M 1 entirely separated.................................................................................... 18
15. Brown medial spot on R 4+5 separated from brown cloud on crossvein dm-cu...................................... 16
- Brown medial spot on R 4+5 confluent with brown cloud on crossvein dm-cu...................................... 17
16. Body length 8.6 mm; basal edge of brown apical spot on R 2+3 at same vertical level of crossvein dm-cu; a large rectangular spot on R 4+5, at middle point of distance between crossveins r-m and dm-cu (see Yang, Hu & Zhu, 2001: fig. 13); only female known...................................................................... H. (H.) yaromi Yang, Hu & Zhu
- Body length 5.7–6.3 mm; basal edge of brown apical spot on R 2+3 behind vertical level of crossvein dm-cu; a small round or quadrate spot on R 4+5, slightly beyond middle point of distance between crossveins r-m and dm-cu (Shi, Gao & Shen, 2017: figs 13, 14); both female and male known............................................ H. (H.) martini Shi, Gao & Shen
17. Antennal 1st flagellomere brown except for yellow base; fore femur with 4 posteroventral setae; hypandrium circular; surstylus wide claviform with two apical setulae in posterior view (see Gao & Yang, 2002: fig. 4)....................................................................................................... H. (H.) guizhouensis Gao & Yang
- Antennal 1st flagellomere entirely yellow; fore femur with 6 posteroventral setae; hypandrium semicircular; surstylus consisting of a triangular outer process and a short claviform inner process in lateral view (see Gao & Yang, 2005a: fig. 20). H. (H.) yangi Gao & Yang
18. Wing with brown apical spot on R 4+5 and M 1 slightly confluent and forming pale brown connecting area between two apical spots; apical spot on R 2+3 distinctly separated from apical spot on R 4+5 ........................................... 19
- Wing with brown apical spots on R 2+3, R 4+5 and M 1 entirely separated............................................ 30
19. Mesonotum with acrostichal setulae in 10 rows............................................................. 20
- Mesonotum with acrostichal setulae in 6–8 rows............................................................ 22
20. Subcostal cell brown apically; abdominal tergites 2–5 without pale brown posterior margin; surstylus not as above....... 21
- Subcostal cell hyaline; abdominal tergites 2–5 with pale brown posterior margin; postgonite not extending to apical tip of phallus in ventral view; surstylus bulged claviform, with long setulae in lateral view (see Yang et al, 2001: figs 7–9)................................................................................... H. (H.) bispinalis Yang, Hu & Zhu
21. Surstylus T-shaped and rounded apically in lateral view (see Yang et al, 2003: fig. 29-801B).................................................................................................. H. (H.) fujianensis Yang, Zhu & Hu
- Surstylus short claviform in lateral view and curved upward apically in posterior view (see Gao & Yang, 2004a: figs 38, 40)............................................................................ H. (H.) tianeensis Gao & Yang
22. Abdomen yellow or pale brown, at least tergites 2–5 with black or brown posterior margin.......................... 23
- Abdomen yellow, tergites 1–6 without brown posterior margin................................................ 24
23. Arista with longest ray as long as height of 1st flagellomere; abdomen pale brown; surstylus straight claviform in lateral view (see Gao & Yang, 2002: fig. 14)..................................................... H. (H.) serrata Gao & Yang
- Arista with longest ray as long as 1/2 height of 1st flagellomere (Fig. 37); abdomen yellow (Fig. 39); surstylus long subuliform in posteror view (Fig. 41)......................................................... H. (H.) longiacutata sp. nov.
24. Mid femur with 5 anterior setae......................................................................... 25
- Mid femur with 4 anterior setae......................................................................... 27
25. Arista with longest ray as long as 4/5 height of 1st flagellomere (Fig. 48); mesonotum with acrostichal setulae in 6 rows (Fig. 49); surstylus long and curved at apex in lateral view (Fig. 52)............................ H. (H.) longicurva sp. nov.
- Arista with longest ray as long as or slightly shorter than height of 1st flagellomere; mesonotum with acrostichal setulae in 8 rows; surstylus not as above............................................................................ 26
26. Ctenidium with 12 short setae on fore femur; surstylus consisting of a small acute apical process, directed downward and a slender knife-like process with dense setulae on dorsal margin in lateral view (see Yang et al., 1999: fig. 2)....................................................................................... H. (H.) henanensis Yang, Zhu & Hu
- Ctenidium with 15−17 short setae on fore femur; surstylus long claviform in lateral view with1–2 long setulae and a few of short hairs (see Shi et al., 2017: fig. 24)........................................... H. (H.) pangae Shi, Gao & Shen
27. Wing with a brown spot between r-m and apical spot on R 4+5 distinctly or slightly confluent with brown spot on crossvein dmcu; surstylus claviform or digitiform..................................................................... 28
- Wing with a brown quadrate spot between r-m and apical spot on R 4+5 separated from brown spot on crossvein dm-cu; surstylus not as above........................................................................................ 29
28. Ctenidium with 15 short setae on ventral margin of fore femur; surstylus absent; pregonite short, broad and acute apically in ventral view; postgonite consisting of a furcated process and a slender subuliform process in ventral view (see Yang et al., 2001: fig. 12)................................................................ H. (H.) curvispinosa Yang, Hu & Zhu
- Ctenidium with 13 short setae on ventral margin of fore femur; surstylus digitiform with long setulae in lateral view; pregonite and postgonite furcated apically, pregonite shorter than postgonite in ventral view (see Yang et al., 1999: fig. 15).................................................................................... H. (H.) zonalis Yang, Zhu & Hu
29. Fore femur with 3 posteroventral setae; epandrium blunt triangular apically; surstylus separated from epandrium and originated from anterior ventral corner of epandrium, with dense tiny setulae on apical 2/3 (see Shi & Yang, 2014: fig. 300).................................................................................. H. (H.) tianjingshanica Shi & Yang
- Fore femur with 4 posteroventral setae; epandrium and surstylus fused, blunt round apically (see Yang et al., 2001: fig. 2)......................................................................... H. (H.) tianmushana Yang, Hu & Zhu
30. Ctenidium with 17–19 short setae on ventral margin of fore femur............................................. 31
- Ctenidium with 11–16 short setae on ventral margin of fore femur.............................................. 32
31. The 1st flagellomere about 1.8 times longer than high; surstylus narrow columnar in lateral view and broad with tiny setulae in posterior view; postgonites triangular with sharp apex in lateral view (see Shi & Yang, 2014: figs 327, 329)....................................................................................... H. (H.) zhangjiajiensis Shi & Yang
- The 1st flagellomere about 2.3 times longer than high (Fig. 15); surstylus light color and narrow at base while dark yellow and broad at apex, nearly trapeziform with two long setulae in lateral view; postgonite hook-like in lateral view (Fig. 19)...................................................................................... H. (H.) bicolorata sp. nov.
32. Ctenidium with 15 short setae on ventral margin of fore femur; pregonite and postgonite long subuliform in ventral view, if ctenidium with 16 short setae, pregonite and postgonite short triangular in lateral view............................. 33
- Ctenidium with 11–14 short setae on ventral margin of fore femur; pregonite and postgonite not as above.............. 35
33. Surstylus without a sharp or triangular process, but blunt round at apex and slightly rolled up with several setulae in lateral view (Fig. 63)..................................................................... H. (H.) miaoae sp. nov. (Part)
- Surstylus with a sharp or triangular process and not as above in lateral view...................................... 34
34. Surstylus very broad ball-like with a triangular process apically in lateral view; hypandrium H-shaped; phallus acute subapically in lateral view (see Wang et al, 2012: figs 30–33)........................ H. (H.) kuankuoshuiensis Wang & Yang
- Surstylus narrow, acute apically in lateral view; hypandrium Y-shaped; phallus blunt round subapically in lateral view (see Shi & Yang, 2014: figs 66, 70).......................................................... H. (H.) chinensis Malloch
35. Subcostal cell hyaline or pale yellow apically.............................................................. 36
- Subcostal cell dark apically............................................................................ 39
36. Arista with longest ray as long as height of 1st flagellomere; mesonotum with acrostichal setulae in 10 rows; surstylus consisting of a slender knife-shaped process and a furcated process with several setulae on subapical and apical margin and a small tooth on lateral margin in lateral view (see Wang et al, 2012: fig. 18)........................ H. (H.) caoi Wang & Yang
- Arista with longest ray at least as long as 1/2 height of 1st flagellomere; mesonotum with acrostichal setulae in 6−8 rows; sur- stylus not as above................................................................................... 37
37. Syntergosternite 7+8 elliptic without sternal part flat; surstylus broad and margined apically in lateral view (Fig. 74).................................................................................. H. (H.) platimarginata sp. nov.
- Syntergosternite 7+8 circular, but with sternal part flat; surstylus not as above.................................... 38
38. Surstylus yellow, blunt round at apex and slightly rolled up in lateral view (Fig. 63).......... H. (H.) miaoae sp. nov. (Part)
- Surstylus pale brown, with a hyaline rectangular area in lateral view (Fig. 99)................ H. (H.) spectabilis sp. nov.
39. Mid femur with 5 anterior setae; mesonotum with acrostichal setulae in 8 rows; surstylus wide claviform, truncate apically, without acute apical process in lateral view; postgonite wide triangular, constricted apically and curved upward in ventral view (see Yang et al., 1999: fig. 9)................................................... H. (H.) curvata Yang, Zhu & Hu
- Mid femur with 4 or 6–8 anterior setae; mesonotum with acrostichal setulae in 10 rows............................. 40
40. A brown elliptical spot present between r-m and apical spot on R 4+5; mid femur with 6–8 anterior setae; surstylus curved knifelike, acute apically in lateral view; postgonite longer than phallus, long subuliform, curved forward apically in lateral view (see Gao & Yang, 2004a: figs 32, 35)................................................. H. (H.) longispina Gao & Yang
- A brown square spot present between r-m and apical spot on R 4+5; mid femur with 4 anterior setae; surstylus short, triangular and acutate apically, with several long setae on dorsal margin and a row of short setulae on ventral margin in lateral view; both pregonite and postgonite short subuliform, about half length of phallus in ventral view (see Yang et al, 1999: figs 4–6)......
description: Published as part of Gao, Xuefeng & Shi, Li, 2019, Nine new species of genus Homoneura from Qinling mountains in China (Diptera: Lauxaniidae), pp. 401-432 in Zootaxa 4608 (3) on pages 402-404, DOI: 10.11646/zootaxa.4608.3.1, http://zenodo.org/record/3770275