Homoneura trisurstylata Li &amp; Yang, 2013, new spec.
Creators: name: Li, Wenliang
name: Yang, Ding
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Lauxaniidae
Homoneura
Homoneura trisurstylata

description: <i>Homoneura trisurstylata</i> new spec. Figs 31-40 MATERIAL: Holotype ♁ (CAU), CHINA, Yunnan Province: Xishuangbanna, Menglun, Lushilin (21°54'N, 101°16'E, 600 m), 5. V. 2009, Tingting Zhang. – Paratypes: CHINA, Yunnan Province: 1 ♁, 1 &amp;female; (MNHG), Xishuangbanna, Menglun, Lushilin (21°54'N, 101°16'E, 600 m), 21. IV. 2007, Wenliang Li. – 1 &amp;female; (CAU), Xishuangbanna, Menglun, Lushilin (21°54'N, 101°16'E, 600 m), 21. IV. 2007, Hui Dong. ETYMOLOGY: Latin, <i>tri</i> -, prefix meaning three + <i>surstyla</i>, meaning surstylus, referring to the surstylus consisting of 3 processes. DIAGNOSIS: Antenna yellow except 1st flagellomere blackish brown at apical 1/3. Wing with 5 brown spots, separately on r-m, dm-cu, preapices of R 2+3, M 1, and apex of R 4+5, preapcial spot of M 1 obscure. Protandrium circular; surstylus consisting of 3 processes; hypandrium H-shaped. FIGS 36-40 <i>Homoneura trisurstylata</i> sp. n. male. (36) Protandrium and epandrium, lateral view. (37) Epandrial complex, posterior view. (38) Protandrium, anterior view. (39) Aedeagal complex, ventral view. (40) Aedeagal complex, lateral view. Scale 0.5 mm. DESCRIPTION <i>Male</i>: Body length 4.8-5.1 mm, wing length 4.6-4.8 mm. <i>Female</i>: Body length 4.3-4.6 mm, wing length 4.5-4.6 mm. Head (Fig. 33) yellow. Frons slightly wider than long and parallel-sided; ocellar triangle brown; oc strong, about as long as anterior or, anterior or slightly shorter than posterior or. Gena about 1/7 height of eye. Antenna yellow except 1st flagellomere blackish brown at apical 1/3; 1st flagellomere 1.4 times longer than high; arista long plumose, with longest hairs longer than height of 1st flagellomere. Proboscis yellowish brown, with yellowish and blackish hairs; palpus pale yellow with blackish hairs. Thorax (Fig. 34) yellow with grayish white pruinescence. Mesoscutum with 0+3 dc, anterior dc clearly behind transverse scutal suture, acr in 10 somewhat irregular rows, prsc somewhat shorter than 1st post-sutural dc. Legs pale yellow. Fore femur with 4 strong pv and 5 pd, ctenidium with 12-17 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. 32) slightly yellow, with 5 brown spots, separately on r-m, dm-cu, preapices of R 2+3, M 1, and apex of R 4+5, preapcial spot of M 1 obscure; subcostal cell hyaline; costa with 2nd (between R 1 and R 2+3), 3rd (between R 2+3 and R 4+5) and 4th (between R 4+5 and M 1) sections in proportion of 2.5: 0.7: 0.5; r-m at middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 1.5: 1.0; ultimate section of CuA 1 about 1/8 of penultimate. Halter pale yellow. Abdomen (Fig. 35) yellow. Male genitalia (Figs 36-40): protandrium circular; epandrium nearly oblong in lateral view, surstylus consisting of 3 processes, in the lateral view, anterior process claviform and recurved, median process triangulum and curved forward, posterior process similar as median process in shape but smaller; hypandrium H-shaped, hypandrial apodeme long and parallel; gonopod columniform, shorter than aedeagus; aedeagus without apical incision, dorsal sclerites with pair of trochiformis processes laterally, and with a small acute process preapically; aedeagal apodeme about as long as aedeagus. DISTRIBUTION: China (Yunnan). REMARKS: The new species resembles <i>H. quiquenotata</i> (de Meijere) from Java in the following characters: 1st flagellomere blackish brown apically; wing with similar pattern; protandrium circular. But it can be separated from the latter by the following features: surstylus consisting of 3 processes; aedeagus without apical incision; aedeagal apodeme about as long as aedeagus. In H. quiquenotata, the surstylus has 1 process; the aedeagus has a deep apical incision; the aedeagal apodeme is shorter than the aedeagus (Sasakawa, 1992).
description: Published as part of <i>Li, Wenliang &amp; Yang, Ding, 2013, Four new species of Homoneura s. str. from Yunnan, China (Diptera, Lauxaniidae), pp. 549-561 in Revue suisse de Zoologie 120 (4)</i> on pages 558-560, DOI: 10.5281/zenodo.6312142
description: {"references": ["SASAKAWA, M. 1992. Lauxaniidae (Diptera) of Malaysia (part 2): a revision of Homoneura van der Wulp. Insecta Matsumurana 46: 133 - 210."]}