Homoneura ( Homoneura ) columnaria, Shi, Li & Yang, Ding, 2009

Homoneura ( Homoneura) columnaria View in CoL sp. nov.

( Figs. 2 View FIGURES 1 – 11 , 17–21 View FIGURES 17 – 21 )

Diagnosis. Face pale yellow with a pair of blackish brown elliptical median spots (sometimes two spots confluent), extending to inner margin of parafacial; parafacial brown. Antenna black. Wing with a pale brown elliptical spot on dm-cu. Abdominal yellow, tergite 2 with a pale brown median spot and a pair of blackish brown lateral bands; tergites 3–5 each with a black posterior band, and a black triangular median spot confluent with black posterior band; tergite 6 with a small brown median spot.

Description. MALE. Body length 4.4–5.3 mm, wing length 4.0– 4.3 mm.

Head pale yellow. Face pale yellow with a pair of blackish brown elliptical median spots (sometimes two spots confluent), extending to inner margin of parafacial; parafacial brown. Frons yellow, about as long as wide and parallel–sided, with two narrow blackish gray stripes along or rows and a narrow brown triangular median stripe, extending to ocellar triangle; ocellar triangle grayish black; oc strong (apical part broken), anterior or slightly shorter than posterior or. Gena about 1/7 height of eye. Occiput with a wide grayish black stripe confluent with ocellar triangle. Antenna black, 1st flagellomere 2.4 times longer than high; arista long plumose, black except brownish base, with longest hairs longer than height of 1st flagellomere. Proboscis yellowish brown, with yellowish and blackish hairs; palpus pale yellow with blackish hairs.

Thorax blackish brown with grayish yellow pollen. Mesoscutum with white pollen on anterior margin, 0+3 dc (anterior dc clearly behind transverse scutal suture), acr in 6 somewhat irregular rows. Anepisternum and katepisternum pale yellow with whitish gray pollen, and each with a grayish black spot. Scutellum brownish black except yellow apical margin, with yellowish gray pollen. Legs pale yellow, but all tarsi dark yellow, except tarsomere 5 brown on apical 2/3; hind tibia with an incomplete brown basal ring. Fore femur with 4 strong pv and 6 pd, ctenidium with 9 short bristles; fore tibia with 1 long preapical ad and 1 short apv. Mid femur with 6 a and 1 apv; mid tibia with 1 strong preapical ad and 3 strong apv. Hind femur with 1 preapical ad; hind tibia with 1 weak preapical ad and 1 short apv. Wing ( Fig. 2 View FIGURES 1 – 11 ) slightly yellow, only with a pale brown stripe 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 2.3 mm: 0.6 mm: 0.4 mm; r-m before middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 1.4 mm: 1.9 mm; ultimate section of CuA1 about 1/7 of penultimate. Halter pale yellow.

Abdomen yellow with sparse silvery white pollen; tergite 2 with a pale brown median spot and a pair of blackish brown lateral bands; tergites 3–5 each with a black posterior band, and a black triangular median spot confluent with a black posterior band; tergite 6 with a small brown median spot. Male genitalia ( Figs. 17–21 View FIGURES 17 – 21 ): protandrium circular; epandrium nearly V–shaped in posterior view, surstylus consisting of a broad hairy digitiform process and a narrow curved bar–like process; hypandrium with a narrow claviform ventral process, hypandrial apodeme distinct; gonopod columniform; aedeagus consisting of a pair of dorsal sclerites, basally with a small lateral concavity and a pair of acuate lateral processes and a pair of furcated dorsoapical processes constricted subapically in ventral view; aedeagal apodeme geniculate in lateral view, longer than aedeagus.

FEMALE. Unknown.

Type material. Holotype 3 ( CAUC), CHINA, Hainan Province: Changjiang, Bawangling National Nature Reserve, Donger station ( 1000 m), 24. V. 2007, Kuiyan Zhang. Paratypes: CHINA, Hainan Province: 1 3 ( CAUC), Ledong, Jianfengling National Nature Reserve, Jianfeng town ( 800 m), 20. V. 2006, Hui Dong; 1 3 ( CAUC), Ledong, Jianfengling National Nature Reserve, Sanfenqu ( 800 m), 11. V. 2007, Junhua Zhang.

Distribution. China (Hainan).

Remarks. The new species is somewhat similar to Homoneura ( Homoneura) beckeri Kertész from Singapore in the following characters: face with a pair of blackish brown median spot and parafacial brown to blackish brown, wing with a pale brown stripe on dm-cu, abdominal tergite 6 yellow with a small brown median spot; gonopod columniform. But it can be separated from the latter by the antennal 1st flagellomere being black; the surstylus being consisting of a broad hairy digitiform process and a narrow curved bar–like process, the aedeagus having a pair of acuate lateral processes and a pair of furcated dorsoapical processes constricted subapically in ventral view. In H. ( H.) beckeri , the antennal 1st flagellomere is yellow except dark at the tip; the surstylus has a claw–like process; the aedeagus has a pair of lateral teeth and many ventroapical teeth without furcated dorsoapical processes ( Sasakawa 1992).

Etymology. Latin, columaria, meaning columniform, referring to the gonopod being columniform; a feminine adjective.