Tipula (Vestiplex) gongdangensis sp. nov.
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publication ID |
https://dx.doi.org/10.3897/zookeys.1040.64376 |
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publication LSID |
lsid:zoobank.org:pub:C241D42C-1D2E-49F6-8D1E-CC96D8B8D90D |
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persistent identifier |
https://treatment.plazi.org/id/188D53B0-4DA7-5FD9-BC2A-7474C3055798 |
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scientific name |
Tipula (Vestiplex) gongdangensis sp. nov. |
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Tipula (Vestiplex) gongdangensis sp. nov. Figs 22-23 View Figure 22, 23 , 24-34 View Figures 24–34 , 35 View Figure 35 , 36 View Figure 36
Type material.
Holotype: male, China, Yunnan, Gongshan County, Bingzhongluo, Gongdangshenshan, 27.97°N, 98.66°E, 12 June 2019, leg. Men QL & Lv L (AQNU), preserved in ethanol.
Paratypes: 23 males, topotypic (AQNU), preserved in ethanol.
Diagnosis.
Tipula (V.) gongdangensis sp. nov. can be recognized by the following combination of characters: body yellow, abdomen with basal segments yellow, tergites trivittate, distal segments, including hypopygium, dark brown; male antenna reaching base of abdomen if bent backward. Hypopygium with gonocoxite armed with a black spine; tergite 9 divided at midline by a pale membrane, broadly emarginated at posterior margin, dorsal surface with a pair of brown, inconspicuously protruded, rounded lobes, posterior margin terminating with a pair of short, black, triangular processes. Adminiculum with median portion before apex distinctly protruded, apex curved, acute in lateral view.
Description
(Figs 22 View Figure 22, 23 - 34 View Figures 24–34 ). Adult male (Fig. 22 View Figure 22, 23 ) (n = 24). Lengths: body 10.5-11.2 mm, wing 14.0-14.2 mm, antenna 5.6-5.9 mm.
Head. Yellowish, vertex and occiput yellowish, medially with narrow dark brown line. Rostrum yellowish, with short nasus densely covered with black setae. Antenna 13-segmented, elongate, if bent backward reaching base of abdomen. Scape, pedicel and first flagellomere yellow; following flagellomeres basally brown, apically light brown, producing an indistinct bicoloured appearance (Fig. 22 View Figure 22, 23 ). Each flagellomere, except first, slightly enlarged at base, segments progressively shortened and narrowed. Apical flagellomere small, reduced. Verticils shorter than their corresponding segments. Palpus brownish-yellow.
Thorax. Pronotum light brown, with darker median area. Prescutum and presutural scutum brownish, with four brown longitudinal stripes. Interspaces between median and lateral stripes grey, with light and short setae. Median pair with anterior margins and inner margins on apical 1/4 suffused with black. Scutum grey, scutal lobes grey-pruinose, each with two brown spots. Scutellum and mediotergite grey-pruinose, with dark brown median line. Pleura yellowish, thinly dusted with brown (Fig. 22 View Figure 22, 23 ). Leg with coxa and trochanter yellow; femur yellow with tip dark brown; tibia and tarsal segments dark brown; tarsal claw with a tooth. Wing light brown (Fig. 23 View Figure 22, 23 ), cell sc darker than ground colour, stigma dark brown with a light area at base, variegated by light areas, including apical area of cell c and median area of 1st cell of cell r1, a light band across apical area of cell r1, base of cells r3, r4 and r5, and median area of discal cell; remaining area light, including base and apical areas of cell bm, and median and apical areas of cells cua and cup. Wing venation: R1 atrophied in basal half, R2+3+4 slightly shorter than R3, R4 distinctly shorter than Rs, R5 curved in apical half, r-m distinctly longer than base of R5, discal cell narrow, 3 × as long as petiole of cell m1, cell m1 more than 4 × as long as its petiole. Halter with stem yellow, knob brown, with apical part lighter.
Abdomen. Abdominal segments 1-6 yellow, with brown lateral and median stripes; remaining segments, including hypopygium, brown (Fig. 22 View Figure 22, 23 ).
Hypopygium. (Fig. 24-34 View Figures 24–34 ). Tergite 9 and sternite 9 totally separated (Fig. 24 View Figures 24–34 ). Tergite 9 completely divided at midline by a pale membrane (Fig. 24 View Figures 24–34 ). Dorsal portion of tergite 9 medially with a pair of brown, inconspicuously protruded, rounded lobes, located on either side of midline; posterior margin emarginated, with a pair of black, short, nearly triangular processes, posterolateral margin extended into rounded lobes that are covered with setae. Ventral portion membranous, brown, with darker areas provided with brown microscopic dots; anal plates narrowed, attached to rounded margins of ventral portion (Fig. 25 View Figures 24–34 ). Gonocoxite entirely cut off from sternite 9, basally covered with setae, dorsally produced into a slightly curved spine with an acute tip (Figs 26 View Figures 24–34 , 27 View Figures 24–34 ). Lobe of gonostylus slightly flattened in middle (Fig. 28 View Figures 24–34 ). Clasper of gonostylus yellow, upper beak extended, dorsal crest angular, with a black ridge originating from the dorsal corner; with a suffused black rim along dorsal surface; lower beak absent; base with triangular lobe and covered with setae (Figs 24 View Figures 24–34 , 26 View Figures 24–34 , 29 View Figures 24–34 ). Sternite 9 with ventral lobe of A9S dark brown, nearly triangular, covered with setae (Figs 27 View Figures 24–34 , 30 View Figures 24–34 ). Dorsal lobe of A9S yellow, densely covered with setae, short, narrowed towards apex, fused with ventral lobe at base (Fig. 30 View Figures 24–34 ). Adminiculum triangular in ventral view, basally flattened and dilated (Fig. 27 View Figures 24–34 ); median portion, before apex, distinctly protruded; apex curved, acute at tip (Fig. 31 View Figures 24–34 ). Sperm pump (Figs 32-34 View Figures 24–34 ) with ejaculatory apodeme V-shaped, each arm expanded and rounded apically (Fig. 32 View Figures 24–34 ). Posterior immovable apodeme with strongly curved paired arms, terminating in an acute apex in lateral view (Fig. 34 View Figures 24–34 ). Anterior immovable apodeme broad, flattened, round in dorsal view (Fig. 33 View Figures 24–34 ). Aedeagus more than 4 × as long as sperm pump (Fig. 34 View Figures 24–34 ).
Female. Unknown.
Biology and distribution.
A total of 24 males were collected with insect nets around the middle of June, 2019 on Gongdang Mountain, located in the south of Bingzhongluo town of Nujiang Lisu Autonomous Prefecture, Yunnan Province (Fig. 36 View Figure 36 ). The new species was collected at altitudes of approximately 2000-2400 m, in mixed mountain forest dominated by various deciduous trees and bushes (Fig. 35 View Figure 35 ).
Etymology.
The specific epithet refers to the type locality, Gongdang Mountain, Yunnan, China.
Discussion.
Tipula (V.) gongdangensis sp. nov. and T. (V.) dechangensis sp. nov. are closely related to T. (V.) dashahensis ( Yang et al. 2005: p. 381, fig. 1A-C) based on the shape of the clasper of the gonostylus and of the dorsal lobe of A9S, but they differ by the shape of gonocoxite, which is stout, horn-shaped in T. (V.) dashahensis and is slender, spine-shaped in T. (V.) dechangensis sp. nov. and T. (V.) gongdangensis sp. nov. The two new species can also be separated by the intermediate stripes on the prescutum and presutural scutum, which are fused in T. (V.) dashahensis and separated, except at the anterior margin, in both of the newly described species.
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