Homoneura (Homoneura) hanmaensis Shi and Shen, 2018

Shen, Rongrong, Shi, Li, Li, Wenliang & Wang, Junchao, 2018, A new species of subgenus Homoneura from Northern China, with information of 12 species newly recorded (Diptera: Lauxaniidae: Homoneura), Zootaxa 4418 (6), pp. 501-525 : 521

Homoneura (Homoneura) hanmaensis Shi and Shen sp. nov.

Figures 68‒72 , 73‒78

Description. MALE. Body length 3.4‒3.7 mm, wing length 3.6‒3.8 mm. FEMALE. Body length 3.3‒3.8 mm, wing length 3.2‒3.5 mm.

Head yellow. Ocellar triangle yellow; ocellar setae proclinate, well developed; ocellar setae longer than anterior fronto-orbital seta, posterior fronto-orbital seta slightly longer than anterior fronto-orbital seta. Parafacial yellow, with a row of short setulaein same length at apical half. Gena about 1/4 height of eye. Antenna yellow, 1 st flagellomere yellowish brown, 1.7 times longer than high; arista brown except for yellow base, pubescent, with longest ray shorter than 1/6 height of 1 st flagellomere . Proboscis and palpus yellow.

Thorax yellow. Postpronotum yellow. Mesonotum yellow; 0+3 dorsocentral setae (1 st postsutural dorsocentral seta close to transverse suture), acrostichal setae in 4 regular rows, with two pairs of strong acrostichal setae. Scutellum yellow. Legs mostly yellow; all tasomeres 3‒5 brown. Fore femur with 5 posterodorsal setae, 5‒6 posteroventral setae and ctenidium with 10 short setae; fore tibia with 1 long preapical anterodoral seta and 1 short apicoventral seta. Mid coxa with 3 apicovental setae; mid femur with 4 anterior setae and 1 short apical posterior seta; mid tibia with 1 strong preapical anterodorsal seta and 1 strong apicoventral seta. Hind coxa with many dense ventral spines (female absent); hind femur with 1 preapical anterodorsal seta; hind tibia with 1 long preapical anterodorsal seta and 1 short apicoventral seta. Wing (Fig.) yellow, 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+2) sections in proportion of 5.9: 2.4: 1; r-m after middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 1: 1.5; ultimate sections of CuA1 about 1/8. Halter pale yellow.

Abdomen yellow. Male abdominal tergite 6 about two times as high as tergite 5 in dorsal view, and sternite 5 bilobate posteriorly with 3 stout teeth on each lobe ( Fig. 76 ). Male genitalia: syntergosternite 7+8 circular; surstylus widen and slightly curved in posterior view; phallus slender with a pair of teech-like processes; phallapodeme short Y-shaped.

Type material. Holotype ♂ ( IMAU), CHINA, Gansu Province: Zhangye, Mati Temple, 2620 m, 10. VII. 2011, Sipei Liu . Paratypes: 2♀♀ (IMAU), Zhangye, Forest Park, anonym; CHINA, Nei Mongol: 1♂ ( IMAU), Hulunbuir, Hanma National Natural Reserve, Central management station, 200-meter plank roads along the stream, Malaise trap, 850 m, 26. IX. 2016, anonym ; 1♂, 1♀ (IMAU), Hulunbuir, Hanma National Natural Reserve, Central management station, 200-meter plank roads along the stream, Malaise trap, 850 m, 28. VIII. 2015., anonym?

Distribution. Nei Mongol (Hulunbuir).

Remarks. The new species is similar to Homoneura (H.) ozerovi Shatalkin, 1993 from Russia, but the latter has four stout spines on each lobe of male sternite 5. The new species is also similar to Homoneura (H.) tesquae ( Becker, 1895) from Russia, but the latter has male tergite 6 nearly as high as the sum of the previous three tergites (original description from Becker, 1895 and Czerny, 1 932) and the latter has six stout spines on each lobe of male sternite 5 ( Papp, 1978: fig. 16).

Etymology. The species is named after the collecting locality.

Figures

FIGURES 68–72. Homoneura (Homoneura) hanmaensis sp. nov. Paratype male: 68. Habitus, lateral View; 69. Head, anterolateralView; 70.head and thorax, dorsal View; 71. abdomen, dorsal View; 72. wing.

FIGURES 73–78. Homoneura (Homoneura) hanmaensis sp. nov. Paratype male genitalia: 73. syntergosternite and epandrial complex, lateral View; 74. epandrial complex, posterior View; 75. syntergosternite, posterior View; 76. sternite 5, Ventral View; 77. phallus complex, Ventral View; 78. phallus complex, lateral View.Scale 0.1 mm.