Guizhaphaenopsodes solidior Tian & X. Huang, 2021

Tian, Mingyi, Huang, Xinglong & Li, Chenliang, 2021, Contribution to the knowledge of subterranean ground beetles from eastern Wuling Mountains, China (Coleoptera: Carabidae: Trechinae), Zootaxa 4926 (4), pp. 521-534 : 527-530

publication ID	https://doi.org/ 10.11646/zootaxa.4926.4.3
publication LSID	lsid:zoobank.org:pub:C92BA48D-4493-4388-A24D-545B7FD1C19E
DOI	https://doi.org/10.5281/zenodo.4546191
persistent identifier	https://treatment.plazi.org/id/255087E5-FFEE-4922-1DE9-FCC1FA1B2087
treatment provided by	Plazi
scientific name	Guizhaphaenopsodes solidior Tian & X. Huang
status	sp. nov.

Treatment

Guizhaphaenopsodes solidior Tian & X. Huang , n. sp.

( Figs. 1 View FIGURE 1 , 5–7 View FIGURE 5 View FIGURE 6 View FIGURE 7 )

Type material. Holotype male, cave Tangle Dong, suburb of Jishou , Xiangxi Tujia & Miao Autonomous Prefecture, west Hunan Province, 28°18’21”N / 109°39’15”E, 270 m in altitude, 2018-I-15, leg. Xinglong Huang, in SCAU. GoogleMaps

Diagnosis. A medium-sized semi-aphaenopsian species, somewhat looking like a Guizhaphaenops species but the body more robust, partly pigmented, with strong antennae extending to about apical 1/5 of elytra.

Description. Length: 6.5 mm, width: 2.2 mm. Habitus as in Fig. 5 View FIGURE 5 .

Head, pronotum, 1 st– 8 th antennomeres, femora and tibiae, undersides of head and thoraxes dark brown, elytra reddish-brown, palps, 9 th– 11 th antennomeres and tarsi yellow. Body smooth and glabrous, but elytra with a minute and sparse pubescence. Microsculpture: isodiametric meshes on vertex, striate on frons, pronotum and elytra. Fore body (head plus pronotum including mandibles) distinctly shorter than elytra.

Head ( Figs. 5 View FIGURE 5 , 6A View FIGURE 6 ) moderately elongate, longer than wide, HLm/HW = 1.9, HLl/HW = 1.6; nearly parallelsided, widest at about middle of head excluding mandibles; front and vertex convex; frontal furrows well-defined and complete, strongly divergent posteriorly; the posterior supraorbital pores located at ending point of frontal furrows; clypeus quadrisetose, labrum transverse, almost straight in the front margin, 6-setose; mandibles developed and moderately curved at apices; tooth short and broad, blunt at tip, about half as long as the lateral lobes; ligula adnated with paraglossae, 12-setose; palps long and slender, the 2 nd labial palpomere about 1.2 times as long as 3 rd; 3 rd maxillary palpomere 1.25 times as long as 4 th; suborbital pores close to neck constriction; antennae thick though filiform, pubescent from 2 nd– 11 th antennomeres, antennomere 3 the longest, almost twice as long as scape; relative length of each antennomere as follows: 1 st (1.0), 2 nd (1.0), 3 rd (1.9), 4 th (1.5), 5 th (1. 3), 6 th (1.2), 7 th (1.1), 8 th (1.0), 9 th (1.0), 10 th (0.9) and 11 th (1. 2).

Pronotum ( Fig. 5 View FIGURE 5 ) wider than head, PW/HW = 1.3, as long as head excluding mandibles, much longer than wide, PL/PW = 1.1; lateral margins gently expanded, narrowly and evenly bordered throughout, strongly reflexed at base, widest at about middle; base and front unbordered, almost straight, the former slightly wider than the latter; both front and hind angles obtuse, though more or less rectangular; anterior latero-marginal pores located apical 2/11 of pronotum; frontal transverse impression faint, whereas basal one well-defined, basal foveae large but shallow; middle line well-marked; disc moderately convex. Scutellum small.

Elytra ( Fig. 5 View FIGURE 5 , 6B View FIGURE 6 ) much longer than wide, EL/EW = 1.6, wider than pronotum, EW/PW = 1.9; unbordered at base; striae shallowly depressed, intervals slightly convex; basal pores distant from scutellum, anterior and posterior dorsal pores on the 3 rd striae at about 1/4 and 2/3 of elytra from base respectively; each group of marginal umbilicate series well separated from the other, apical group composed of 4 pores.

Legs moderately long and densely pubescent; fore and middle tibiae longitudinally grooved externally, whereas smooth in hind tibiae.

Ventrites IV–VI each with a pair of paramedial setae, VII bisetose apically in male.

Male genitalia ( Fig. 7 View FIGURE 7 ): The median lobe of aedeagus slightly arcuate at median portion, rounded blunt at apex; basal opening quite large, with a round and large sagittal aileron; inner sac provided with a thick and long copulatory piece, which is about 1/4 as long as aedeagus; in dorsal view, apical lobe longer than wide, widened at apex; parameres well-developed and elongated, the right one as long as the left, each armed with four long setae at apex.

Female: Unknown.

Etymology. To refer to the strong body and antennae.

Distribution. China (Hunan). Known only from Tangle Dong, sympatric with Xiangxius jiangi n. sp. ( Fig. 1 View FIGURE 1 ).