Pterostichus (Orientostichus) leo, Yin & Zhu & Shi, 2023
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publication ID |
https://dx.doi.org/10.3897/zookeys.1175.107636 |
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publication LSID |
lsid:zoobank.org:pub:E88FF072-E8C9-45AE-A494-4B2A5F7DD7E8 |
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persistent identifier |
https://treatment.plazi.org/id/556A4863-E7B0-49D9-9374-03EE4EC36CE4 |
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taxon LSID |
lsid:zoobank.org:act:556A4863-E7B0-49D9-9374-03EE4EC36CE4 |
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treatment provided by |
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scientific name |
Pterostichus (Orientostichus) leo |
| status |
sp. nov. |
Pterostichus (Orientostichus) leo sp. nov.
Figs 3 View Figures 1–6 , 9 View Figures 7–12 , 15 View Figures 13–18 , 21 Chinese vernacular name: 狮通缘步甲 View Figures 19–24
Type locality.
China, Sichuan province: Liangshan Yi Autonomous Prefecture, Jinyang county, Shizishan mountain (27.88N, 103.23E, alt 3470 m).
Type material.
Holotype: ♂: "China: Sichuan, Jinyang country, Shizishan mt., meadow /fir /rhododendron, N27.8882, E103.2448-N27.8838, E103.2310", "3470-3493 m, 2015.VII.28, under rock/log., Shi HL, Liu B & Ma YL lgt. BJFU exp. 2015", "HOLOTYPE ♂ Pterostichus (Orientostichus) leo sp. nov. det. Yin & Shi, 2022" [red label]; Paratypes: 3 ♂ and 8 ♀: the same data as holotype but labeled as paratypes.
Diagnosis.
Elytral intervals 3 and 5 each with ≥ 3 large foveate discal pores, interval 7 without discal pore. Antennomere 3 with accessory setae. Pronotum nearly circular with slight sinuation before posterior angles, posterior angles with faintly pointed denticle (Fig. 9 View Figures 7–12 ); lateral margins with one mid-lateral seta. Pronotal basal foveae with indistinct outer groove, shorter than 1/2 of inner groove. Male sternite VII without secondary sexual modification. Apical lamella of aedeagus subuliform, very slender with apex strongly turned upward, LL/LW = 2.4-2.65 (Fig. 15 View Figures 13–18 ); endophallus with right branch of bsp tuberculate on dorsal surface (Fig. 21 View Figures 19–24 ).
Comparison.
P. leo sp. nov. is peculiar among the P. pulcher species group for its unmodified male sternite VII and strongly upturned apical lamella of male genitalia, in comparing to other species which possess a tuberculate male sternite VII and conspicuously downward bent apical lamella. For the pronotum strongly narrowed to the base and the posterior angles more or less dentate, P. leo sp. nov. is most similar to P. pemphis sp. nov. But they can be readily distinguished by the differences on pronotum, male sternite VII and male genitalia (details listed in the comparison section of the latter species).
Description.
BL = 14.2-15.2 mm, BW = 5.3-5.6 mm, dorsal surface and appendages black, elytra often a little reddish brown. Antennomere 3 with accessory setae on apical 2/3 in additional to the primary setae forming apical ring. Pronotum nearly circular, PW/PL = 1.20-1.24, widest near anterior 1/3; anterior margin wider than posterior margin; strongly narrowed to base (PBW/PW = 0.63-0.68); lateral margins evenly arched from anterior angles to middle, slightly sinuate before posterior angles; posterior angles a little projected outward, forming a faintly denticle (Fig. 9 View Figures 7–12 ); lateral margins with one mid-lateral seta near maximum width; basal foveae impunctate, inner and outer grooves straight, outer groove very shallow and shorter than 1/2 length of inner groove, area between them slightly depressed; disc without or with very faint transverse wrinkles aside median line. Elytra oblong; parascutellar pore absent; intervals 3 and 5 each with ≥ 3 foveate discal pores; interval 7 without discal pore. Male sternite VII without secondary sexual modification. Median lobe of aedeagus stout, strongly curved near basal 1/3; apical lamella of aedeagus subuliform, strongly elongate (LL/LW = 2.4-2.65) with apex conspicuously thickened and turned upward (Fig. 15 View Figures 13–18 ). Endophallus long, straightly directed ventrally, gonopore opened to ventral-basal direction of aedeagus; vb distinct, spherical, rounded at both apexes; bsp deeply grooved, nearly U-shaped, dorsal surface of right branch folded and strongly hooked forming a tubercle (Fig. 21 View Figures 19–24 ).
Distribution.
This species was only known from its type locality, Shizishan mountain, Jinyang county, Liangshan Yi Autonomous Prefecture (Fig. 42 View Figure 42 ).
Etymology.
The scientific name of the new species derived from Latin, which means lion. It implies to the type locality of the new species, Shizishan Mt., which means "the mountain of lion" in Chinese.
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.