Pseudotachycines guizhouensis Zhu & Shi, 2022

Huang, Shihui, Lin, Chun & Luo, Changqing, 2023, New taxonomic status of the Pseudotachycines procerus guizhouensis Zhu & Shi 2022 (Rhaphidophoridae: Aemodogryllinae: Aemodogryllini), Zootaxa 5230 (4), pp. 496-500 : 497-498

Pseudotachycines guizhouensis Zhu & Shi, 2022

( Figs. 1–3 )

Pseudotachycines procerus guizhouensis Zhu, Wang, Zhou & Shi, 2022b . Insects, 13(7): 17.

Description. Male. Body medium-sized ( Figs. 1A–C ). Vertex of head divided into two conical tubercles, bases of the well-developed tubercles slightly drawn together, obtusely rounded apices obviously separated ( Figs. 1D, E ). Eyes oval, protruding forward; ocelli visible ( Figs. 1D, E ). Anterior margin of pronotum straight, posterior margin obviously protruding caudad, ventral margin arc-shaped; posterior margin of mesonotum slightly protruding caudad; posterior margin of metanotum straight.

Legs long and slender. Fore femur about 1.2 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 2 inner spines 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 2 inner spines and 1 outer spine, apex with 1 pair of dorsal small spines and 1 pair of ventral long spines, between the paired ventral spines with 1 small spine. Hind femur ventrally with 1 inner spine and without outer spine; hind tibia dorsally with 54 inner spines and 47 outer spines, arrange in groups, ventral and dorsal surface with a pair of small subapical spines respectively, apex with 1 pair of long dorsal spines and 1 pair of long ventral spines; the longest dorso-apical spine obviously exceeding the dorsoapical spine of hind metatarsus ( Fig. 1F ). Hind metatarsus keeled beneath.

Epiproct like the shape of tongue ( Fig. 1G ). Paraproct distinctly longer than the epiproct ( Figs. 1G, H ). Apexes of the paired dorsolateral lobes of male genitalia distinctly sclerotized; median lobe with distinct lateral sclerites; epiphallus of male genitalia small and indistinct ( Figs. 2A, B ).

Female. General appearance similar to that of male ( Figs. 3A–D ), but hind femur ventrally with 3 inner spines. Ovipositor about half the length of hind femur; base of ovipositor slightly broad, narrowing to apex; apex pointed and slightly curved upwards; almost indistinct denticles on ventral edge of distal part of inferior valves ( Fig. 3E ). Subgenital plate nearly triangular ( Fig. 3F ).

Coloration. All tergites dorsally blackish brown; rest of body light brown. Femora of all legs light brown with dark brown stripes; tibiae and tarsi dark brown.

Material examined. Holotype: 1♁, Tianba Town, Fenggang County, Zunyi City , Guizhou Province, 26.VIII.2021, coll. Bing Li, Ben Hong, Kesong Yin. Paratypes: 1♀, same data as the holotype .

Measurements (mm). Body: ♁15.53, ♀ 17.66; pronotum: ♁6.36, ♀ 6.63; fore femur: ♁7.38, ♀ 8.82; hind femur: ♁17.21, ♀ 22.03; hind tarsus: ♁5.66, ♀ 8.32; ovipositor: ♀ 11.00.

Distribution. China (Guizhou).

Discussion. The species Pseudotachycines guizhouensis is rather similar to Pseudotachycines procerus , but can be distinguished from the latter by several morphological characters. First, the shape of the sclerotized part of the dorsal lateral lobe of male genitalia is different between P. guizhouensis and P. procerus . Second, the female subgenital plate of P. guizhouensis is triangular, but in P. procerus , the female subgenital plate is quadrangular. Third, the number of the inner spines on the hind femur of P. guizhouensis is lower than that in P. procerus .

Figures

FIGURE 1. Pseudotachycines guizhouensis (male). A. habitus, dorsal view; B. habitus, lateral view; C. habitus, ventral view; D. head, frontal view; E. vertex of head, showing conical tubercles; F. hind tarsus, lateral view; G. epiproct, dorsal view; H. paraproct, lateral view.

FIGURE 2. Male genitalia of Pseudotachycines guizhouensis. A. genitalia, dorsal view; B. genitalia, ventral view.

FIGURE 3. Pseudotachycines guizhouensis (female). A. habitus, dorsal view; B. habitus, lateral view; C. habitus, ventral view; D. hind tarsus, lateral view; E. ovipositor, lateral view; F. subgenital plate, ventral view.