Tachycines (Gymnaeta) bifolius, Zhu & Chen & Shi, 2020
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publication ID |
https://doi.org/ 10.11646/zootaxa.4809.1.4 |
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publication LSID |
lsid:zoobank.org:pub:05B649A7-C4A5-449E-84B4-48BE566C579D |
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persistent identifier |
https://treatment.plazi.org/id/A26A87ED-950F-AB6E-81A9-CFC9A28AF45F |
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treatment provided by |
Plazi |
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scientific name |
Tachycines (Gymnaeta) bifolius |
| status |
sp. nov. |
2. Tachycines (Gymnaeta) bifolius View in CoL sp. nov.
( Figs. 2 View FIGURE 2 , 16 View FIGURE 16 G–H; Map 1)
Description. Male. Body slightly smaller than average for the genus. Fastigum verticis and eyes disappeared. Apical segment of maxillary palpus obviously longer than subapical one, apical area inflated, globular.
Pronotum broad, anterior margin of disc roughly straight, posterior margin rounded; lateral lobe longer than high, ventral margin arc-shaped. Mesonotum and metanotum short, posterior margin of mesonotum rounded, that of metanotum straight.
Fore coxa and ventral surface of fore femur unarmed, internal genicular lobe with 1 small spine, external genicular lobe with 1 long spine; fore tibia with 1 outer spine on ventral surface, apex with 1 pair of spines on ventral surface, between the paired ventral spines without small spine. Middle femur unarmed on ventral surface, internal and external genicular lobes with 1 long spine respectively; middle tibia unarmed on ventral surface, apex with 1 pair of ventral spines, between the paired ventral spines without small spine. Hind femur unarmed on ventral surface, internal and external genicular lobes stingless; hind tibia with 20–25 inner spines and 17–18 outer spines, subapex with 1 pair of dorsal spines, apex with 1 pair of dorsal spines and 2 pairs of ventral spines, intero-dorsal spine slightly shorter than hind basitarsus, which unarmed on dorsal surface, ventral surface with bristles.
Abdominal tergite without process, abdominal sterna with conical tubercles, apices of tubercles obtuse. Epiproct tongue-shaped, paraproct simple. Cerci extremely long, conical, apices acute. Basal half of dorsal sclerite of genitalia rectangular, apical half splayed; lateral sclerites of dorso-median lobe oval, reaching subapex of dorso-median lobe, apical area of dorso-median lobe with 2 pairs of small lobes. Subgenital plate transverse and broad, apical area slightly concave.
Female. Appearance is similar to male. Ovipositor longer than half of hind femur, dorsal margin smooth, apical area of ventral margin denticulate. Subgenital plate nearly trapezoid, apical area narrow, with a concavity.
Coloration. Body color uniform, yellow.
Material examined. Holotype: male, Shahe Cave , Yunihe, Panzhou City, Guizhou, 28 July, 2012, coll. Huiming Chen. Paratypes: 1 male and 2 females, same collection data as for holotype .
Measurements (mm). Body: ♂ 15.8–17.5, ♀ 11.8–13.0; pronotum: ♂ 3.9–4.0, ♀ 4.0–4.2; fore femur: ♂ 10.7–12.0, ♀ 10.7–11.0; hind femur: ♂ 16.0–16.5, ♀ 16.2–16.5; hind tibia: ♂ 19.2–20.0, ♀ 19.0–19.5; hind basitarsus: ♂ 3.4–3.8, ♀ 3.8–4.0; ovipositor: 10.0–10.3.
Distribution. China (Guizhou).
Etymology. The name of the new species is derived from apical area of dorso-median lobe of male genitalia with 2 pairs of small lobes, Latin bi- means biconjugate, with Latin foli - means lobe.
Discussion. Dorsal sclerite of male genitalia of the new species is similar to Tachycines (Gymnaeta) fallax ( Zhang & Liu, 2009) , but the new species can be easily distinguished from the latter by: apical area of dorso-median lobe of male genitalia with 2 pairs of small lobes, fastigum verticis and eyes disappeared, a small number of spines of hind tibia and the shape of female subgenital plate.
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.