Tachycines (Gymnaeta) ovalius, Lin & Huang & Luo, 2023
publication ID |
https://doi.org/ 10.11646/zootaxa.5389.5.4 |
publication LSID |
lsid:zoobank.org:pub:95F5F4E5-81C2-466D-A593-411EEFD8EFAD |
DOI |
https://doi.org/10.5281/zenodo.10421781 |
persistent identifier |
https://treatment.plazi.org/id/03F15305-3F30-8600-FF72-67E40E002FB4 |
treatment provided by |
Plazi |
scientific name |
Tachycines (Gymnaeta) ovalius |
status |
sp. nov. |
Tachycines (Gymnaeta) ovalius sp. nov.
( Figs. 9 View FIGURE 9 , 10 View FIGURE 10 )
Description. Male. Body small-sized ( Figs. 9A–C View FIGURE 9 ). Vertex of head divided into two conical tubercles, bases of the well-developed tubercles drawn together, obtusely rounded apices separated ( Fig. 9D View FIGURE 9 ). Eyes normal, not reduced ( Fig. 9D View FIGURE 9 ).
Thorax. Anterior margin of pronotum straight, posterior margin slightly protruding backwards, ventral margin arc-shaped ( Fig. 9E View FIGURE 9 ); posterior margin of mesonotum protruding backwards; posterior margin of metanotum straight.
Legs. All legs long and slender; coxae with small medial projections. Fore femur about 2.1 times longer than the pronotum, ventrally unarmed, internal genicular lobe with 1 small spine, external genicular lobe with 1 long spine; fore tibia ventrally with 1 inner spine and 2 outer spines, 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 unarmed; hind tibia dorsally with 65–85 inner spines and 58–74 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. 9F View FIGURE 9 ). Hind metatarsus keeled beneath.
Abdomen. Abdominal sternites with rather short ventral projections. Epiphallus of male genitalia “H”-shaped, lateral margin arc-shaped; median lobe with 1 pair of apical lobules and 1 pair of large oval lateral sclerites; ventral lateral lobes of genitalia slightly longer than dorsal lateral lobes ( Figs. 9G, H View FIGURE 9 ).
Female. General appearance similar to that of male ( Figs. 10A–C View FIGURE 10 ). Ovipositor about 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. 10D View FIGURE 10 ). Subgenital plate nearly rounded and with a projection in the middle part of hind margin ( Fig. 10E View FIGURE 10 ).
Coloration. Body yellowish-brown. Posterior margins of the tergites with brown stripes. Head yellowish-brown with dark brown tubercles. Eyes black. Hind femora with light brown stripes laterally.
Material examined. Holotype: 1♂, Guanyin Cave, Longchang Town , Zhenfeng County, Qianxinan Buyi Miao Autonomous Prefecture , Guizhou Province, 24.VIII.2020, coll. Changqing Luo, Shihui Huang & Xueli Feng. Paratypes: 1♂, 4♀, same data as the holotype .
Measurements (mm). Body: ♂ 11.80–14.72, ♀ 12.16–12.80; pronotum: ♂ 5.42–5.90, ♀ 5.20–5.32; fore femur: ♂ 10.90–12.90, ♀ 11.40–11.66; hind femur: ♂ 21.22–23.94, ♀ 21.08–22.58; ovipositor: ♀ 10.02–10.40.
Distribution. China (Guizhou).
Discussion. The new species is similar to T. (G.) zorzini ( Rampini & Di Russo, 2008) , but can be separated from the latter by several morphological features. First, the number of spines on the hind tibiae of this new species is higher than that in T. (G.) zorzini (41 inner and 47 outer spines). Second, the shape of the female subgenital plate is different between these two species ( Figs. 4C View FIGURE 4 ; 10E View FIGURE 10 ).
Etymology. The name of the new species refers to the shape of the lateral sclerites of male genitalia.
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.
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Aemodogryllinae |
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Aemodogryllini |
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