Homoneura (Homoneura) septentrionalis (Loew, 1847)

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 : 38-39

Homoneura (Homoneura) septentrionalis (Loew, 1847)

( Figs 235–243 )

Sapromyza septentrionlis Loew, 1847: 32 . Type locality: Russia (“Das nordliche Russland ”). Homoneura mellina Czerny, 1932: 50 [as syn.].

Homoneura septentrionlis: Papp in Soós & Papp, 1984: 197. Shatalkin, 2000: 31.

Diagnosis. Wing with basal tips of R4+5 and CuA1 slightly brown; brown spots on r-m and dm-cu. Abdomen pale yellow.

Redescription. MALE. Body length 3.9 mm, wing length 4.5 mm. FEMALE. Body length 3.0– 3.2 mm, wing length 4.0 mm.

Head ( Fig. 236 ) yellow. Frons as long as wide and parallel-sided; ocellar triangle yellow, oc long, extending to anterior margin of frons, longer than posterior or; anterior or as long as posterior or. Gena about 1/4 height of eye. Antenna yellow, 1st flagellomere about 1.4 times as long as high; arista black except for brownish base, with ray pubescent, shorter than 1/3 height of 1st flagellomere. Proboscis and palpus yellow.

Thorax ( Figs 237, 238 ) yellow. Mesonotum with 0+3 dc (1st post-sutural dc clearly behind transverse suture), acr in 2 rows and prsc as long as or shorter than 1st post-sutural dc. Scutellum yellow, apical scutellar setae crossed. Legs pale yellow except for apical tarsomere pale brown. Fore femur with 3 pv, 6 pd, and ctenidium with 13–15 short setae; fore tibia with 1 long preapical ad and 1 short apv. Mid femur with 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 apv. Wing ( Fig. 235 ) basal tips of R4+5 and CuA1 slightly brown; brown spots on r-m and dm-cu; subcostal cell hyaline; 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 4.9:1.4:1; r-m slightly behind middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 1:1.2; ultimate section of CuA1 about 1/6 of penultimate. Halter pale yellow.

Abdomen ( Fig. 235 ) pale yellow. Male genitalia ( Figs 239–243 ): syntergosternite semicircular, with short dorsal setulae; epandrium with four pairs of long dorsal setae and a row of setulae along anterior ventral corner; surstylus narrow, curved and acute apically with short setulae in lateral view; hypandrium wide U-shaped in ventral view; postgonite broad with a slender subuliform process in ventral view and rounded apically in lateral view; aedeagus broaden at middle and narrow apically with a small concavity in ventral view; aedeagal apodeme very short, about 1/3 length of aedeagus.

Material examined. 1 ♀ ( USNM), Russia: Siberia, Vladivostok [Primorsky Krai], 1923, Cockerell (det. J. R. Malloch); 6 ♂ ( USNM), Russia: Siberia, Valentine Bay, VII. 1923, Cockerell.

Distribution. China (Harbin), Mongolia, Russia.

Figures

FIGURES 235 – 238. Homoneura (Homoneura) septentrionalis (Loew, 1847). Male. 235. body, lateral view; 236. head, anterior view; 237, 238. thorax, dorsal and lateral view.

FIGURES 239 – 243. Homoneura (Homoneura) septentrionalis (Loew, 1847). Male. 239. syntergosternite and epandrium, lateral view; 240. syntergosternite, anterior view; 241. epandrial complex, posterior view; 242. aedeagal complex, ventral view; 243. aedeagal complex, lateral view. Scale bar = 0.1 mm.