Tachycines (Tachycines) nigrocorporis, Hong & Huang & Luo, 2022
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publication ID |
https://doi.org/ 10.11646/zootaxa.5209.4.9 |
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publication LSID |
lsid:zoobank.org:pub:CD88BEF6-961D-4C59-A9D6-0C0FA554B0AC |
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DOI |
https://doi.org/10.5281/zenodo.7334001 |
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persistent identifier |
https://treatment.plazi.org/id/03C0FC36-FFF8-D94E-2BF2-FB3E8D430DBF |
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treatment provided by |
Plazi |
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scientific name |
Tachycines (Tachycines) nigrocorporis |
| status |
sp. nov. |
Tachycines (Tachycines) nigrocorporis sp. nov.
( Figs. 1 View FIGURE 1 , 2 View FIGURE 2 )
Description. Male. Body large-sized ( Figs. 1A–C View FIGURE 1 ). Vertex of head divided into two conical tubercles, bases of the well-developed tubercles drawn together, obtusely rounded apices separated ( Fig. 1D View FIGURE 1 ). Eyes oval, protruding forward; median ocellus distinct, situated between antennal sockets ( Fig. 1D View FIGURE 1 ).
Anterior margin of pronotum straight, posterior margin slightly protruding backward, ventral margin arcshaped; posterior margin of mesonotum distinctly protruding backward; posterior margin of metanotum slightly protruding backward ( Fig. 1E View FIGURE 1 ).
Legs long and slender; coxae with small medial projections.Fore femur about 1.8 times longer than the pronotum, ventrally unarmed, internal genicular lobe with 1 long spine, external genicular lobe with 1 small spine; fore tibia ventrally with 2–3 inner spines and 1 outer spine, apex with 1 small outer spine on dorsal surface and 1 pair of long spines on ventral surface, between the paired ventral spines with 1 small spine. Middle femur ventrally unarmed, internal and external genicular lobes with 1 long spine respectively; middle tibia ventrally with 1 inner spine and 1 outer spine, apex with 1 pair of dorsal spines and 1 pair of ventral spines, between the paired ventral spines with 1 small spine. Hind femur ventrally with 3–4 inner spines and without outer spine; hind tibia dorsally with 64–66 inner spines and 61–64 outer spines, arrange in groups, ventral and dorsal surface with a pair of small sub-apical spines respectively, apex with 1 pair of long dorsal spines and 1 pair of long ventral spines; the longest dorso-apical spine not exceeding the dorso-apical spine of hind metatarsus ( Fig. 1F View FIGURE 1 ). Hind metatarsus keeled beneath ( Fig. 1F View FIGURE 1 ).
Epiphallus of male genitalia rectangular and with many denticles on surface, the anterior angles of epiphallus slightly extended, the posterior angles obviously extended and elongated; median lobe of genitalia with 2 pairs of apical lobules and distinct lateral sclerites, dorsal surface with 1 large triangular sclerite; membranous ventral lateral lobes of genitalia slightly longer than dorsal ones ( Figs. 1G, H View FIGURE 1 ).
Female. General appearance similar to that of male ( Figs. 2A–C View FIGURE 2 ), but hind femur ventrally with 4–5 inner spines. Ovipositor shorter than half the length of hind femur; base of ovipositor broad, narrowing to apex; apex pointed and slightly curved upwards; almost indistinct denticles on ventral edge of distal part of inferior valves ( Fig. 2D View FIGURE 2 ). Subgenital plate rather small, with hind margin rounded ( Fig. 2E View FIGURE 2 ).
Coloration. Body uniformly black without distinct stripes. Face light brown with 2 black longitudinal stripes under eyes and antennas; antennal flagellum yellowish-brown. Legs brown with black stripes.
Material examined. Holotype: 1♂, Tianba Town, Fenggang County, Zunyi City , Guizhou Province, 21.IX.2021, coll. Ben Hong, Bing Li, Kesong Yin. Paratypes: 1♂, 2♀, same data as the holotype.
Measurements (mm). Body: ♂ 25.21–30.31, ♀ 26.52–27.04; pronotum: ♂ 7.99–8.08, ♀ 7.91–8.30; fore femur: ♂ 12.95–15.45, ♀ 14.90–15.15; hind femur: ♂ 28.42–28.61, ♀ 29.61–30.50; hind tarsus: ♂ 10.65–12.24, ♀ 11.76– 11.97; ovipositor: ♀ 10.70–12.38.
Distribution. China (Guizhou).
Discussion. This new species is unique in the subgenus Tachycines (Tachycines) due to the following character of male genitalia: the dorsal surface of the median lobe with 1 large triangular sclerite. This morphological feature of male genitalia can be applied to distinguish this new species from all other species of Tachycines (Tachycines) .
Etymology. The name of the new species refers to the black coloration of the body.
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.