Tipula ( Vestiplex ) bidentata 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.17993001 |
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persistent identifier |
https://treatment.plazi.org/id/B4E1367D-4B49-5756-857F-B23B9981879B |
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treatment provided by |
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scientific name |
Tipula ( Vestiplex ) bidentata Starkevich, Saldaitis & Men |
| status |
sp. nov. |
Tipula ( Vestiplex) bidentata Starkevich, Saldaitis & Men sp. nov.
Figs 5 View Figure 5 , 6 View Figure 6 , 7 View Figure 7 , 8 View Figure 8
Type material.
Holotype: China • ♂ (in alcohol); Sichuan, 20 km N. Maoxian ; 31°46.310'N, 103°42.898'E; alt. 1820 m; 20 May 2017; A. Saldaitis leg.; NRC; Specimen number NRCE 000100 ; genitalia dissected GoogleMaps .
Diagnosis.
Tipula ( V.) bidentata sp. nov. can be recognized by yellow body, elongated antenna reaching middle of abdomen when bent backward and bicolored flagellum. Gonocoxite large, apically bearing longer ventral tooth, dorsal tooth split into two denticles.
Description.
Male. Body length 11.1 mm, wing length 9.5 mm ( N = 1). General body coloration yellow, thorax brownish yellow (Fig. 5 A View Figure 5 ).
Head. Brown. Rostrum yellowish brown, nasus small. Palpus brown. Antenna 13 - segmented, elongated, if bent backward almost reaching the middle of abdomen. Scape and pedicel brownish yellow, first flagellar segment yellow, segments 3–4 yellow, remaining segments getting yellowish brown to brown. Each flagellomere except the first with darkened basal enlargement, making the bicolor appearance of flagellum; two incisions, the distinct incision at base and weak distal incision. Apical flagellomere small, distinctly shorter than preceding flagellomere. Long verticils about 1 / 3 as long as corresponding flagellomeres.
Thorax. Yellowish brown to brown, thinly dusted with grey. Pronotum brown with darker median spot. Prescutum and presutural scutum with four brown stripes, indistinctly bordered by lighter brown. Central stripes separated by light brown ground. Interspaces gray. Postsutural scutum brown, dusted with grey, each lobe with two brown sports, anterior spot twice smaller than posterior one. Scutellum brownish yellow, mediotergite brown with darker median line, both sclerites dusted with grey. Pleura yellowish brown, dusted with grey. Legs with coxae yellow, dusted with grey. Trochanters yellow. Femora basally yellow, getting brownish yellow toward brown tips. Tibiae brownish yellow, tips brown. Tarsal segments brown. Claw without tooth. Wing pale brown, tinged with brown (Fig. 5 B View Figure 5 ). Vein m-cu joining dm at fork of M 3 + 4, cell M 1 about 1.5 as long as its petiole. Halter pale yellow.
Abdomen. Abdominal segments 1–6 yellow, remaining brownish yellow, trivittate. Lateral lines narrow, dark brown, dorsal line pale brown, interrupted.
Hypopygium (Figs 6 View Figure 6 – 8 View Figure 8 ). Tergite 9 forming a concave saucer-shaped plate (Figs 6 View Figure 6 , 7 A View Figure 7 ). The main body of tergal plate yellow, posterior margin broadly emarginated with shallow median U-shaped notch; lateral angles of plate nearly angular and blackened; anterior portion of tergal plate raised into narrow sclerotised border. Gonocoxite separated from sternite 9 by suture, in the shape of large nearly, rectangular plate (Figs 6 View Figure 6 , 7 B – D View Figure 7 ). Apex of gonocoxite terminating in longer ventral tooth, with dorsal tooth split into two denticles. Outer gonostylus nearly finger shaped (Fig. 7 E View Figure 7 ). Inner gonostylus in the shape of slightly curved plate (Figs 6 A View Figure 6 , 7 F – H View Figure 7 ), beak broadly blackened with tip obtuse, lower beak absent; dorsal margin apically with short extension, the margin of extension rough. Genital bridge with sclerite sp 2 reduced (Fig. 7 D View Figure 7 ), sclerites sp 1 fused at base, forming V-shaped structure (Fig. 7 K View Figure 7 ). Adminiculum triangular in distal half with gonapophyses weakly developed (Fig. 7 I, J View Figure 7 ). Apex ventrally produced into short denticle. Proctiger pale with narrow anal plates (Fig. 7 L View Figure 7 ). Sperm pump with central vesicle flattened (Fig. 8 A View Figure 8 ). Compressor apodeme with deep V-shaped median incision (Fig. 8 B View Figure 8 ). Posterior immovable apodeme extended, slightly flattened (Fig. 8 C View Figure 8 ). Anterior immovable apodeme rounded. Aedeagus about 4 × as long as sperm pump, blackish brown except for yellow distal part. Apex with sagital and frontal incisions, trident in shape (Fig. 8 A, D View Figure 8 ).
Female. Unknown.
Etymology.
The name of the new species refers to the gonocoxite apically possessing two teeth.
Distribution.
China, Sichuan.
Remarks.
Tipula ( V.) bidentata sp. nov. is closely related to T. ( V.) aestiva Alexander, 1936 ( China, Qinghai and Gansu) based on the shape of tergite 9, gonocoxite, inner gonostylus and adminiculum (Fig. 10 View Figure 10 ). The new species can be separated by the gonocoxite which has dorsal tooth split into two denticles; tergite 9 of T. ( V.) bidentata sp. nov. is posterolaterally angular, while this part is rounded in T. ( V.) aestiva ; and the inner gonostylus bearing dorsoapical rough extension which is smooth in T. ( V.) aestiva . Both species can also be separated by the sperm pump: in T. ( V.) aestiva the posterior apodeme is medially produced into a specific short lobe which is absent in T. ( V.) bidentata sp. nov.
| NRC |
Division of Biological Sciences, National Research Council of Canada |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.