Homoneura (Neohomoneura) quadrifera, Shi, Li, Wang, Jun Chao & Yang, Ding, 2011

Shi, Li, Wang, Jun Chao & Yang, Ding, 2011, Nine new species from China of the subgenera Chaetohomoneura and Neohomoneura in the genus Homoneura (Diptera, Lauxaniidae), Zootaxa 2975, pp. 1-28 : 24-26

publication ID	https://doi.org/ 10.5281/zenodo.205067
DOI	https://doi.org/10.5281/zenodo.6189693
persistent identifier	https://treatment.plazi.org/id/03B45B31-0430-FFAE-FF43-FD4CFFAE778B
treatment provided by	Plazi
scientific name	Homoneura (Neohomoneura) quadrifera
status	sp. nov.

Treatment

Homoneura (Neohomoneura) quadrifera View in CoL sp. nov.

( Figs. 32 View FIGURES 19 – 33 , 70–74)

Diagnosis. Wing with brown apical spots on R2+3 and R4+5 with basal extremities far beyond vertical level of dm-cu; a large triangular hyaline marginal area present between brown apical spots on R2+3 and R4+5; a narrow apical spot on M1 with basal extremity beyond vertical level of spot on R4+5. Abdomen brownish yellow, tergites 4–6 each with a black stripe–like median spot.

Description. MALE. Body length 6.2–6.8 mm, wing length 6.6–6.7 mm. FEMALE. Body length 6.5 mm, wing length 5.9 mm.

Head yellow. Frons brownish yellow with a pair of pale brown median stripes extending to ocellar triangle, as long as wide and parallel–sided; ocellar triangle yellowish brown; oc developed, nearly as long as posterior or. Gena about 1/8 height of eye. Antenna yellow except 1st flagellomere pale brown on apical 2/3, 1st flagellomere about 1.5 times as long as high; arista black plumose except pale brown base, with longest setula slightly shorter than height of 1st flagellomere. Proboscis yellow, with yellowish and blackish setulae; palpus yellow, with blackish setulae.

Thorax yellow with sparse grayish white pruinosity. Mesonotum with 0+3 dc, acr in 10 rows and prsc longer than anteriormost dc. 1 anepst, 2 kepst. Scutellum yellow. Legs mostly yellow, except tarsomeres 3–5 brown. Fore femur with 5 strong pv (4 pv in female) and 10 pd, and ctenidium with 11–13 short setae; fore tibia with 1 strong preapical ad and 1 short apv. Mid femur with 5–6 a and 1 app; mid tibia with 1 strong preapical ad, 5–6 short p and 3 strong apv. Hind femur with a row of weak av (only 3 apical setae distinct) and 1 preapical ad; hind tibia with 1 preapical ad and 1 short apv. Wing ( Fig. 32 View FIGURES 19 – 33 ) slightly yellow, brown apical spots on R2+3, R4+5 and M1 slightly separated, extending to tip of vein; apical spots on R2+3 and R4+5 with basal extremities far beyond vertical level of dmcu; apical spots on R2+3 and R4+5 having same basal extremity (or basal extremity of apical spot on R4+5 slightly before vertical level of spot on R2+3), a large triangular hyaline marginal area present between brown apical spots on R2+3 and R4+5; a narrow apical spot on M1 with basal extremity beyond vertical level of spot on R4+5, a brown stripe– like spot on 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 3.7 mm: 0.8 mm: 0.6 mm; r-m before middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 2.0 mm: 3.2 mm; ultimate section of CuA1 about 1/8 of penultimate. Halter yellow.

Abdomen brownish yellow, tergites 4–6 each with a black stripe–like median spot. Male genitalia (Figs. 70– 74): protandrium circular with a trapeziform ventral segment and a setula around spiracle; epandrium broad apically, with three or four pairs of dorsal setae and dense apical setulae and a distinctly long apical seta; surstylus with a horn–like apical outer process and three inner processes including a pair of subuliform anterior ventral processes and a broad contorted apical process; hypandrium Y–shaped, lateral arm with two setulae; gonopod long, curved subuliform, with a small acuate triangular dorsal process in lateral view; aedeagus with a small triangular lateral process in lateral view; wide basally with a pair of basal processes and narrow apically in ventral view; aedeagal apodeme as long as aedeagus.

Type material. Holotype 3 ( SYSU), CHINA, Guangxi Province: Longzhou, Nonggang (200 m), 3. VI. 1993, Yongsheng Cui. Paratypes: CHINA, Guangxi Province: 2 3, 1 Ƥ ( SYSU), data same as holotype.

Distribution. China (Guangxi).

Remarks. The species is somewhat similar to Homoneura (Neohomoneura) denticuligera sp. nov. from China (Hunan) in the following characters: wing with brown apical spot on R4+5 with basal extremity before vertical level of spots on R2+3 and M1; abdominal tergites 4–6 each with a black median spot. But it can be separated from the latter by the abdominal tergites lacking the black posterior margin, the surstylus consisting of a horn–like apical outer process, a pair of subuliform anterior ventral inner processes and a broad contorted apical inner process in the lateral view; the gonopod being curved subuliform, with a small acuate triangular dorsal process in the lateral view; the aedeagus being narrow apically without incision in the ventral view. In H. (N.) denticuligera , the abdominal tergites 2–5 have the black posterior margin; the surstylus is wide digitiform in the lateral view with the short setulae and many tiny teeth; the gonopod is nearly triangular; the aedeagus is wide apically with a pair of acuate dorsoapical processes and a small distal incision.

Etymology. Latin, prefix quadri-, meaning four + suffix –fera, meaning carrying or bearing, referring to the surstylus having four processes; a feminine adjective.