Homoneura (Homoneura) longifurcata, Shi, Li & Yang, Ding, 2014

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 : 32-33

Homoneura (Homoneura) longifurcata sp. nov.

( Figs 14 , 158–162 )

Diagnosis. Antennal 1st flagellomere brown on apical 2/3. Mesonotum with two brown stripes. Wing with a brown medial spot between r-m and apical spot on R4+5, a brown subapical spot on R2+3 confluent with medial spot on R4+5; brown apical spot on R4+5 and M1 confluent or slightly separated; brown cloud on r-m and dm-cu, subcostal cell brown apically. Abdominal male tergites 3–6 (female 3–7) each with a black stripe-like medial spot.

Description. MALE. Body length 3.9–4.0 mm, wing length 4.2–4.3 mm. FEMALE. Body length 3.7–3.9 mm, wing length 4.1–4.4 mm.

Head pale yellow. Frons as long as wide and parallel-sided, with two brown stripes extending to ocellar triangle; ocellar triangle brown; oc shorter than anterior or, anterior or longer than 1/2 length of posterior or; gena about 1/6 height of eye. Antenna yellow, 1st flagellomere brown on apical 2/3, 1.4 times longer than high; arista black except for brownish base, ray pubescent, with longest ray shorter than 1/3 width of 1st flagellomere. Proboscis and palpus yellow.

Thorax pale yellow. Mesonotum without brownish medial stripe, with 0+3 dc (anterior dc behind transverse suture), acr in irregular 8 rows; prsc shorter than 1st post-sutural dc. Legs yellow, fore femur with 2 strong pv and 5 pd, ctenidium with 15 short setae; fore tibia with 1 long preapical ad and 1 short apv. Mid femur with 5–6 a and 1 app; mid tibia with 1 strong preapical ad and 2 strong apv. Hind femur with 1 preapical ad; hind tibia with 1 weak preapical ad and 1 short apv. Wing ( Fig. 14 ) pale yellow, with a brown medial spot between r-m and apical spot on R4+5, a brown subapical spot on R2+3 confluent with medial spot between r-m and apical spot on R4+5; brown apical spot on R4+5 and M1 confluent or slightly separated; brown cloud on r-m and dm-cu, subcostal cell brown apically; 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 4.4:2.6:1; r-m at middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 1:1.6; ultimate section of CuA1 about 1/7 of penultimate. Halter yellow.

Abdomen pale yellow. Male tergites 4–6 (female 4–7) each with a brown medial spot. Male genitalia ( Figs 158–162 ): syntergosternite very broad, with several dorsal setulae and three setulae around spiracle; surstylus with two pairs of furcated processes; hypandrium narrow with four hypandrial apodemes; postgonite consisting of a pair of short subuliform processes and a pair of knife-like processes with long setae; aedeagus slender with dorsoapical teeth in lateral view and a small apical incision in ventral view, aedeagal apodeme very short.

Type material. Holotype ♂ ( CAUC), CHINA, Hainan Province: Changjiang, Bawangling National Nature Reserve, Dong’er station, 1000 m, 24. V. 2007, Junhua Zhang. Paratypes: 2 ♂, 1 ♀ ( CAUC), CHINA, Hainan Province: same locality as holotype, Kuiyan Zhang.

Distribution. China (Hainan).

Remarks. The new species is similar to Homoneura (Homoneura) abnormis Gao & Yang from China (Guangxi) in wing pattern with six brown spots, but it can be separated from the latter by the syntergosternite being very broad, with several dorsal setulae and three setulae around spiracle; the surstylus having two pairs of furcated processes; the postgonite consisting of a pair of short subuliform processes and a pair of knife-like processes with long setae; the aedeagus being very slender with a small apical incision and a pair of tiny apical teeth. In H. (H.) abnormis , the syntergosternite doesn’t have setulae around spiracle; the surstylus includes an apical process and a small teeth-like process in lateral view; the postgonite is long columnar; the aedeagus is broad with a wide apical incision (Gao & Yang, 2004).

Etymology. Latin, furcata, meaning furcate, referring to the surstylus with a slender furcated process; a feminine adjective.

Figures

FIGURES 13 – 24. Wing. 13. H. (H.) levis (Wiedemann, 1830); 14. Homoneura (Homoneura) longifurcata sp. nov.; 15. H. (H.) noticomata sp. nov.; 16. H. (H.) pseudograndis Papp & Gaimari, 2013; 17. H. (H.) quadristriata sp. nov.; 18. H. (H.) shunxica sp. nov.; 19. H. (H.) subulifera sp. nov.; 20. H. (H.) tianjingshanica sp. nov.; 21. H. (H.) triangulata sp. nov.; 22. H. (H.) triprocessa sp. nov.; 23. H. (H.) zhangjiajiensis sp. nov.; 24. H. (H.) zhejiangensis sp. nov.

FIGURES 158 – 162. Homoneura (Homoneura) longifurcata sp. nov. Male. 158. syntergosternite and epandrium, lateral view; 159. syntergosternite, anterior view; 160. epandrial complex, posterior view; 161. aedeagal complex, ventral view; 162. aedeagal complex, lateral view. Scale bar = 0.1 mm.