Chelipoda hubeiensis Yang & Yang, 1990

Plant, Adrian R., 2009, Diversity Of Chelipoda Macquart, 1823 (Diptera: Empididae: Hemerodromiinae) In Northern Thailand With Discussion Of A Biodiversity ‘ Hot Spot’ At Doi Inthanon, Raffles Bulletin of Zoology 57 (2), pp. 255-277 : 261-262

Chelipoda hubeiensis Yang & Yang, 1990

( Figs. 5, 6 , 28 )

Material examined. – THAILAND, Phetchabun, Nam Nao National Park , helicopter landing ground, 16°43.156'N 101°35.118'E, 890 m, pan trap, coll. N. Hongyothi : 1 male, 2 females, 4–5 Jul.2006 ( QSBG, T262 ) . Chiang Mai, Doi Inthanon National Park, coll. Y Areeluck: Kew Mae Pan , 18°33.163'N 98°28.8'E, 2,200 m, Malaise trap , 9 females, 2 females, 24–30 Aug.2006 ( QSBG, T233 ) ; 1 male 13–21 Sep.2006 ( NMWC, T251 ) ; 5 females, 21–27 Sep.2006 ( QSBG, T344 ) ; 4 females, 27 Sep. –5 Oct.2006 ( QSBG, T350 ) ; 13 females, 5–12 Oct.2006 ( NMWC, T364 ) ; 12–19 Oct.2006 ( NMWC, T370 ) ; 1 male, 7 females, 19–26 Oct.2006 ( QSBG, T376 ) ; 4 females, 26 Oct. –2 Nov.2006 ( QSBG, T382 ) ; 6 females, 2–10 Nov.2006 ( NMWC, T388 ) : Kew Mae Pan Trail , 18°33.162'N 98°28.810'E, 2,200 m, Malaise trap , 1 female, 24 Nov.–1 Dec.2006 ( QSBG, T1866 ) ; 1 female, 1–8 May.2007 ( QSBG, T1824 ) ; 1 male, 2 females, 8–15 May.2007 ( QSBG, T1829 ) : Summit Forest, 18°35.361'N 98°29.157'E, 2,500 m Malaise trap , 1 male, 9–16 Aug.2006 ( QSBG, T178 ) ; 2 males, 1 female, 16–24 Aug.2006 ( QSBG, T185 ) ; 3 females, 24–30 Aug.2006 ( QSBG, T235 ) ; 1 female, 30 Aug. –6 Sep.2006 ( QSBG, T241 ) ; 1 female 6–13 Sep.2006 ( QSBG, T247 ) ; 1 male, 3 females, 13–21 Sep.2006 ( NMWC & QSBG, T253 ) ; 2 females, 21–27 Sep.2006 ( QSBG, T346 ) ; 5 females, 27 Sep.–5 Oct.2006 ( NMWC, T352 ) ; 2 females, 15–22 Apr.2007 ( QSBG, T1844 ) ; 4 females, 17–18 Apr.2007 ( NMWC, T1834 ) : Summit Marsh , 18°35.361'N 98°29.157'E, 2,500 m, Malaise trap , 1 male, 2 females, 2–9 Aug.2006 ( QSBG, T124 ) ; 6 males, 3 females, 9–16 Aug.2006 ( NMWC, T177 ) ; 5 males, 7 females, 16–24 Aug.2006 ( NMWC, T184 ) ; 4 males, 6 females, 24–30 Aug.2006 ( NMWC, T234 ) ; 1 male, 7 females, 30 Aug.–6 Sep.2006 ( NMWC, T240 ) ; 5 females, 13–21 Sep.2006 ( QSBG, T252 ) ; 2 females, 21–27 Sep.2006 ( NMWC, T345 ) ; 1 male, 27 Sep. –5 Oct.2006 ( QSBG, T351 ) ; 1 male, 16–23 Mar.2007, ( QSBG, T1812 ) ; 1 male, 23 Mar.–1 May.2007 ( QSBG, T1818 ) ; 1 male, 4 females, 15–22 Apr.2007 ( QSBG, T1840 ) ; 2 males, 11 females, 22–29 Apr.2007 ( QSBG, T1846 ) ; 6 males, 4 females, 1–8 May.2007 ( NMWC, T1823 ) ; 3 males, 4 females, 8–15 May.2007 ( QSBG, T1828 ) : Vachiratharn Falls , 18°32.311'N 98°36.048'E, 700 m, Malaise trap , 2 females, 6–13 Sep.2006 ( QSBG, T242 ) . Chaiyaphum, Tat Tone National Park ; dry dipterocarp forest, 15°59.037'N 102°2.103'E, 250 m, Malaise trap, coll. M. Ngoychanse , 2 females, 21–28 Jun.2006 ( NMWC, T24 ) ; Phu hang sing, 15°58.723'N 102°02.231'E, 290 m, Malaise trap, coll. T. Jaruphan & O. Budsawong , 4 females ( NMWC, T226 ) .

Diagnosis. – Head and thorax black including propleuron. Thoracic setae and spines on F 1 dark.

Description. – Male. Body length 2.5–3.0 mm. Head black with paler dusting; vt and ocl strong, black; upper upo distinct, lower upo smaller and lpo virtually absent with very little fine pile behind mouth. Basal antennal segments yellowish; poped dirty yellow, darker apically, about 1.8x long as wide, stylus 2.5× as long. Palp pale with strong dark terminal seta.

Thorax black, extensively dusted; all setae black including two dc, one npl and one sa all strong; otherwise with only small hair like setae on humeral and posthumeral area and on scutum posteriorly

Legs yellow, tarsomeres 5 darker. C 1 0.8× as long as thorax, no distinct anterobasal seta, all setulae small becoming longer on distal half and quite long anteroapically. F 1 1.1× as long as C 1, distinctly inflated, 3.8× as long as wide, widest 0.4 from base; femoral formula 6(6–7)/18(15– 21)/15(12–17)/6(5–7) +1–2 ( Table 1), spines and denticles black, av and pv spines somewhat longer basally, regularly spaced with smaller basal spine contiguous with and indistinguishable from av series. T 1 0.75× as long as F 1.

Abdomen blackish. Tergite 6 with a few strong dark seta dorsally on posterior margin. Tergite 8 very narrow. Genitalia blackish, darker on apex of subepandrial process and with externally visible part of phallus yellow. Epan and Hypan fused, rather rounded in lateral view ( Fig. 5 ), bearing scattered dark setae posteriorly; left and right lamellae broadly separated by unpigmented densely micropilose membrane (in many specimens the membranous and less strongly sclerotized regions partially collapse and the genitalia appear more pointed apically in lateral view ( Fig. 6 )). Cercus fused with Epan+ Hypan, bluntly pointed, irregularly triangular, a regular series of erect dark setae dorsally and numerous fine yellowish setae below. Subepandrial process sharply projected anteriorly, rather broad, sharply upwardly curved apically. Phallus sharply reflexed anteriorly, basal section of anterior loop lying beneath a triangular unpigmented membrane (an anterior extension of the medial membrane separating the lateral lamellae), with a distal loop emerging near base of cercus; apex tightly confined between subepandrial processes.

Wing membrane clear or faintly brownish; veins yellowish brown, paler basally ( Fig. 28 ). Squamae with black fringes. Halter greyish white.

Female. Similar to male but antenna with stylus rather longer than in male, almost 3× long as poped. Upper upo rather stronger. Thorax with hair like setae on humeral and posthumeral areas rather stronger though still very small.

C 1 with anterior setulae less strongly developed and F 1 slightly larger and stouter than in male, widest 0.4 from base; femoral formula 5(5–6)/21.5(20–24)/15(14–18)/5(5– 6) +1, basal spine usually weaker than in male. Cercus moderately long.

Remarks. – This species was described from Wudangshan Mountain, Hubei, China ( Yang & Yang, 1990) and is here reported from Chiang Mai and Petchabun provinces in Thailand. The male genitalia of Thai specimens agree with Fig. 1 in Yang & Yang (1990) although the thoracic setae are black rather than yellow and in the key of Yang & Yang (2004) Thai specimens run to C. lyneborgi Yang & Yang, 1990 (described from a single female and hence probably unrecognizable). However, the colour of thoracic setae is rather variable in many Chelipoda spp. and the determination of Thai specimens as C. hubeiensis is strongly supported by genitalic characters. In Thailand, this species was abundant on Doi Inthanon in the upper wet forest zone from 2,200 –2,500 m. There were two peaks of abundance in August to November and between April to May.

Figures

Figs. 1–6. Male genitalia of Chelipoda species in lateral view: 1. C. chaiamnata new species; 2. C. flavida Brunetti; 3. C. guangxiensis Yang & Yang; 4. C. inthawichayanona new species: 5–6 C. hubeiensis Yang & Yang; 5. typical form; 6. variant (outline only).

Figs. 25–28. Chelipoda species: 25. C. manggawna new species, male; 26. C. macrosceles new species, female habitus; 27. C. nakropa new species, male, front femora showing chaetotaxy; 28. C. hubeiensis Yang & Yang, female, wing. Abbreviations: bm, cell bm; br, cell br; bs, basal spines; d, denticles; dm, cell dm; dm-cu, crossvein dm-cu; s, spines.