Homoneura (Homoneura) grahami Malloch, 1929

Shi, Li & Yang, Ding, 2014, Supplements to species groups of the subgenus Homoneura in China (Diptera: Lauxaniidae: Homoneura), with descriptions of twenty new species, Zootaxa 3890 (1), pp. 1-117 : 27-28

Homoneura (Homoneura) grahami Malloch, 1929

( Figs 117–127 )

Homoneura (Homoneura) grahami Malloch, 1929: 81 . Type locality: China (Sichuan). Holotype male in USNM. Papp in Soós and Papp, 1984: 195. Shatalkin, 2000: 26; Sasakawa, 2001: 83.

Diagnosis. Arista ray pubescent, longest ray about 1/4 height of 1st flagellomere. Mesonotum with acr in irregular 6–8 rows. Fore femur with 5 pv and ctenidium with 9–11 short setae. Mid femur with 3–4 a. Wing with brown area extending from costal margin to M1, a narrow brown stripe-like spot on dm-cu, male with brown spot on r-m (not in female).

Redescription. MALE. Body length 3.5 mm, wing length 3.8 mm. FEMALE. Body length 3.2 mm, wing length 3.5 mm.

Head ( Figs 118, 119 ) yellow. Frons without brown stripes, as long as wide and parallel-sided; ocellar triangle yellow; anterior or shorter than posterior or, oc longer than posterior or. Parafacial with a row of short setulae with same length. Gena about 1/9 height of eye. Antenna yellow, 1st flagellomere about 1.5 times as long as high; arista black except for brownish base, ray pubescent, with longest ray about 1/4 height of 1st flagellomere. Proboscis and palpus yellow.

Thorax ( Figs 118, 120 ) yellow. Mesonotum with 0+3 dc (1st post-sutural dc clearly behind transverse suture), acr in irregular 6–8 rows and prsc as long as 1st post-sutural dc. Scutellum yellow. Legs yellow, except for apical tarsomere pale brown. Fore femur with 5 pv, 8 pd, and ctenidium with 9–11 short setae; fore tibia with 1 long preapical ad and 1 short apv. Mid femur with 3–4 a and 1 app; mid tibia with 1 strong preapical ad and 2 strong apv. Hind femur with 1 weak preapical ad; hind tibia with 1 preapical ad and 1 weak apv. Wing ( Fig. 122 ) with brown area extending from costal margin to M1, a narrow brown stripe-like spot on dm-cu, male with brown spot on r-m (not in female); costa with 2nd (between R1 and R2+3), 3rd (between R2+3 and R4+5) and 4th (between R4+5 and M1) sections in proportion of 5.1:1.4:1; r-m behind middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 1:1.4; ultimate section of CuA1 about 1/6 of penultimate. Halter yellow.

Abdomen ( Fig. 121 ) yellow. Male genitalia ( Figs 123–127 ): syntergosternite broad circular; epandrium broad with weak dorsal setae; surstylus long with curved apically; hypandrium broad in ventral view; postgonite slender basally and wide apically with many setulae in ventral view; aedeagus slightly curved and truncated in lateral view, with a pair of dorsal sclerites broad and truncate apically; aedeagal apodeme shorter than aedeagus.

Type material. Type ♂ ( USNM, No. 40346), CHINA, Szechuen (Sichuan Province): Mt. Omei, Shin Kai Si, 4000 feet, D. C. Graham (no collecting date, det. J. R. Malloch). Allotype ♀ ( USNM, No. 40346), CHINA, Szechuen (Sichuan Province): Suifu, D. C. Graham (no collecting date, det. J. R. Malloch). Distribution. China (Sichuan), Vietnam.

Figures

FIGURES 117 – 122. Homoneura (Homoneura) grahami Malloch, 1929. Male. 117, 118. body, lateral view; 119. head, anterior view; 120. thorax, dorsal view; 121. abdomen, dorsal view; 122. wing.

FIGURES 123 – 127. Homoneura (Homoneura) grahami Malloch, 1929. Male. 123. syntergosternite and epandrium, lateral view; 124. syntergosternite, anterior view; 125. epandrial complex, posterior view; 126. aedeagal complex, ventral view; 127. aedeagal complex, lateral view. Scale bar = 0.1 mm.