Tipula ( Vestiplex ) apteroides Starkevich, Saldaitis & Men, 2025
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publication ID |
https://doi.org/10.3897/zookeys.1264.139740 |
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publication LSID |
lsid:zoobank.org:pub:ACE99CFC-5ECA-4F70-B181-942B71F2E7C2 |
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DOI |
https://doi.org/10.5281/zenodo.17992999 |
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persistent identifier |
https://treatment.plazi.org/id/23F88420-3ECA-5CB2-AEB0-FAD8F9640F73 |
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treatment provided by |
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scientific name |
Tipula ( Vestiplex ) apteroides Starkevich, Saldaitis & Men |
| status |
sp. nov. |
Tipula ( Vestiplex) apteroides Starkevich, Saldaitis & Men sp. nov.
Figs 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 3
Type material.
Holotype: China • ♂ (pinned); Yunnan; Xue Shan nr. Zhongdian ; 27°49N, 99°34E; alt. 4000–4100 m; 23 June 1996; Farkač, P. Kábatek and A. Smetana leg.; Mus. Silesiae Opava; Inv. č.: d 005 7-2004 ; SMOC GoogleMaps . Paratypes: China • 2 ♂ (pinned); same data as holotype; SMOC GoogleMaps .
Comparative material examined.
Tipula ( Vestiplex) aptera Savchenko, 1955 : China • Lectotype ♂; Qinghai; Sanka village, Den-chu River, Kam , Yangtze Basin ; 17. VI. 1901; Kozlov leg.; ZIN • Paralectotype 2 ♂; same data as holotype; ZIN. Also, material listed in Starkevich et al. (2019 a).
Diagnosis.
Tipula ( V.) apteroides sp. nov. can be easily recognized by dark brown body coloration and greatly reduced wings. Male tergite 9 with lateral corners produced into toothed posterolateral lobes, dorsal surface with dorsomedian anteriorly extended sclerotised area, laterally terminating in obtuse teeth. Dorsomedian area provided with additional median elevated ridge. Inner gonostylus with apical margin terminating in three teeth.
Description.
Male. Body length 12.0– 12.3 mm, wing length 0.8–0.9 mm ( N = 3). General body coloration dark brown (Fig. 1 View Figure 1 ).
Head. Dark brown, vertex and occiput dusted with grey brown and provided with median dark brown line. Rostrum dark brown with short nasus. Palpus blackish brown. Scape and pedicel dark brown, flagellum broken in all three specimens.
Thorax (Fig. 1 B View Figure 1 ). Overall brown, dusted by light greyish brown, medially with dark line. Prescutum and presutural scutum heavily dusted by light brown, with central and lateral stripes ill-defined, recognizable by darker borders. Postsutural scutum brown, dusted with light greyish brown and dark median spot; scutellum dusted with light greyish with median line present in two specimens; mediotergite brown, dusted with light greyish brown with dark median line or spot. Pleura brown, heavily dusted by yellowish grey. Legs with coxae brown, heavily dusted by yellowish grey. Trochanters and femora dark reddish brown, femora slightly darkened at tips; tibiae dark reddish brown with tips darkened; tarsal segments dark brown. Claw without tooth. Wing greatly reduced. Halter dark brown.
Abdomen. Abdominal tergites 1–5 dorsally dark reddish brown with darker median stripe. Lateral parts of abdominal tergites brown, with margins broadly pale. Remaining tergites brown. Sternites 1–6 dark reddish brown, remaining dark brown.
Hypopygium (Figs 2 View Figure 2 – 4 View Figure 4 ). Tergite 9 in the shape of shallowly emarginated, saucer-shaped plate (Figs 2 View Figure 2 , 3 A, B View Figure 3 ). Posterior margin blackened and microscopically roughened, broadly emarginated, medially with narrow incision. Posterolateral margins rounded. Lateral corners produced into toothed posterolateral lobes (Fig. 2 B View Figure 2 ). Tergal surface with dorsomedian sclerotised area, extended anteriorly, its lateral margins produced into obtuse teeth. Dorsomedian area provided with additional median elevated ridge, anteriorly and posteriorly terminating in obtuse denticles, so that three caudally pointed teeth are visible in lateral view (Figs 2 B View Figure 2 , 3 B View Figure 3 ). Gonocoxite separated from sternite 9 by suture, apically with rounded lobe (Fig. 3 C View Figure 3 ). Outer gonostylus nearly finger-shaped, slightly curved at base (Fig. 3 D View Figure 3 ). Inner gonostylus in the shape of strongly curved plate (Fig. 3 E – H View Figure 3 ). Beak extended and blackened, lower beak broadly flattened with blackened margin. Apical margin of inner gonostylus terminating in three teeth. Dorsal margin terminating in blackened dorsoapical and apical median teeth; median surface apically with dorsomedian ridge which terminates in broad tooth. Genital bridge with sclerite sp 2 narrow, fused with both margins of gonocoxite (Fig. 3 C View Figure 3 ). Sclerites sp 1 fused into flattened base, distal part narrowed with preapical triangular lobe (Fig. 3 J View Figure 3 ). Adminiculum in the shape of a flattened plate, posterolaterally produced into rounded projection; anterior parts extended (Fig. 3 L View Figure 3 ). Sternite 9 with ventral lobe of A 9 s narrowing at tip (Fig. 3 I View Figure 3 ). Sperm pump with central vesicle spherical (Fig. 4 A View Figure 4 ). Compressor apodeme flattened, with shallow median incision (Fig. 4 B View Figure 4 ). Posterior immovable apodeme relatively short, shorter than compressor apodeme; anterior immovable apodeme narrow. Aedeagus about 1.8 × as long as sperm pump, brownish yellow (Fig. 4 A View Figure 4 ).
Female. Unknown.
Etymology.
The specific epithet is based on the name T. ( V.) aptera , a closely related species characterized by a reduced wing.
Distribution.
China, Yunnan.
Remarks.
Tipula ( V.) apteroides sp. nov. belongs to the erectiloba species group which was proposed by Savchenko (1960), with the following discussion in Starkevich et al. (2019 a). The new species is similar to T. ( V.) aptera ( China, Qinghai) in having greatly reduced wings and dark brown body coloration. Still the new species can be easily separated by tergite 9 posterolaterally having toothed lobes and median elevated ridge which are absent in T. ( V.) aptera ( Savchenko 1955: fig. 1). The elevated anterior border of tergite 9 is much broader in T. ( V.) apteroides sp. nov. with lateral margins produced into obtuse teeth, while in T. ( V.) aptera the border is smaller laterally without teeth. Both species can also be separated by the inner gonostylus, which bears a dorsomedian ridge in T. ( V.) apteroides sp. nov., the latter is absent in T. ( V.) aptera .
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