Tmesiphorus kinomurai, Inoue & Maruyama & Nomura, 2019

Inoue, Shota, Maruyama, Munetoshi & Nomura, Shûhei, 2019, Revision of the genus Tmesiphorus LeConte, 1849 (Coleoptera: Staphylinidae: Pselaphinae) from Japan, Zootaxa 4646 (1), pp. 67-86 : 78-81

Tmesiphorus kinomurai sp. nov.

[Japanese name: Hoso-higekata-arizukamushi]

( Figs 10–12 )

Tmesiphorus sp. 1, Maruyama et al., 2013: 33 (illustration, diagnosis). Type material. Holotype (placed in NSMT): ♂, Japan: [Honshû], Gifu-ken , Seki-shi, Senbiki, 20 IV 2003, K. Kinomura leg. ( AJ), NSMT-I-C- 200334. Paratypes: 1♂, Gifu-ken , Gifu-shi , Mt. Kinka-zan (Alt. 50m), 18 IV 2013, K. Kinomura leg. ( AJ) ( NSMT) ; 2♀, same data as holotype ( KUM) ; 1♀, Gifu-ken , Gifu-shi, Nagaraobusa, 7 VI 2003, K. Kinomura leg. (LM) ( KUM) ; 2♀, Gifu-ken , Gifu-shi, Mt. Kinka-zan, 22 IV 2006, K. Kinomura leg. ( AJ) ( KUM) ; 1♀, Gifu-ken , Takayama-shi , Shoukawa-chô, Isshiki, 5 V 2013, K. Kinomura leg. ( AJ) ( KUM) .

Diagnosis. Tmesiphorus kinomurai sp. nov. is very similar in general appearance to T. princeps . However, T. kinomurai is readily distinguished from T. princeps by the following states: head longer than wide, weakly shining; eyes small; postocular margin longer than eyes; antennae slender; antennomeres IX–XI each longer than wide; XI lanceolate; pronotum slender; tergite V with longitudinal carinae extending to posterior half.

Description. Male ( Fig. 10-A ). Body length 2.62–2.71 mm. Body dark brown to reddish-brown.

Head ( Figs. 11-A, B ) longer than wide, HL 0.5–0.53 mm, HW 0.43–0.48 mm, slender, almost ovoid in dorsal view, with long setae; frons narrowed, with longitudinal groove including small fovea, densely punctate, narrowed posteriorly to vertex; vertex with two small foveae, with short longitudinal carina between vertexal foveae, weakly shining, slightly depressed around the two vertexal foveae; eyes small, prominent; occiput rounded, with tufts of yellow setae; postocular margin two times as long as eyes; antennae ( Figs. 10-C, D ) more slender, with antennomeres I thick, elongate, each 2.5 times longer than II, 1.5 times wider than II; II each as long as wide; III each slightly as long as wide, narrowed at the base, broadened apically, IV–VI each as long as wide; VII–VIII each transverse; III–VIII successively broadened towards apices; IX–XI enlarged to form club, slightly curved inward in outer margin; IX each longer than wide, slightly wider than I, shallowly depressed longitudinally with dense setae on ventral surface; with a depression from base to apex, 2/3 as wide as segmental width on apical margin; X each longer than wide, slightly slender than IX, with glabrous area with sparse setae on ventral surface; XI each longer than wide, about as thick as IX, slightly produced outward at middle, narrowed apically from middle to apices, lanceolate; shallowly depressed longitudinally from base to middle with sparse setae on ventral surface; maxillary palpi asymmetrical; segments II and III each with slightly long penicillate spine on outside; segment IV thick, with rounded lobe on lateral margin, apical portion conical.

Pronotum ( Fig. 11-C ) slightly longer than wide, PL 0.56 mm PW 0.53–0.55 mm; dorsum broadly rounded, widest to middle, narrowed posteriorly, weakly shining, sparsely covered with long setae, with distinct median and lateral foveae at posterior base; elytra ( Fig. 11-D ) much wider than long, EL 0.71–0.73 mm, EW 1.00– 1.11 mm, sparsely covered with long setae; each elytron with basal median and inner foveae pubescent, weakly sulcate from median fovea to posterior 2/3 of elytra, weakly carinate from between two foveae to posterior 1/2 of elytra, slightly carinate from outside of median fovea to posterior margin, with thick brush-like of yellow setae along posterior margin; profemora thickest, with white setae at anterior face; mesofemora, metafemora slender; tibiae slender; protibiae thickest, arcuate and thickened at middle, as long as mesotibiae; metatibiae longest; tibiae all with dense yellow setae at apices; tarsi ( Fig. 11-F ) all slightly slender, elongate; tarsomeres II 2 /3 as long as III; tarsal claws all asymmetrical; protarsal anterior claws each thicker than posterior one; mesotarsal and metatarsal posterior claws slightly longer than anterior claws.

Abdomen ( Fig. 11-E ) large, wider than long, AL 0.82–0.93 mm, AW 1.08–1.18 mm, sparsely covered with long setae, tergite IV as long as tergite VI, tergite V longest, declined toward apex, tergite VII small, tergite VIII smallest, semicircular; tergites IV and V with lateral carinae, those of tergite IV extending from anterior margin to posterior margin, those of tergite V extending from anterior margin to posterior 1/2; tergite IV with thick brush-like of yellow setae along posterior margin.

Male genitalia ( Fig. 12 ) 0.36 mm in length, well-sclerotized, more like oval; parameres symmetric, strongly projecting ventrally; median lobe asymmetric, projecting ventrally, thick, curved downwardly from middle to apex; basal bulb broad; apex slightly asymmetrical; secondary gonopore small; endophallus elongate, circular at base, weakly curved dorsally at middle.

Female ( Fig. 10-B ). BL 2.61–2.83 mm: HL 0.50–0.55 mm; HW 0.45–0.49 mm; PL 0.53–0.60 mm; PW 0.53– 0.57 mm; EL 0.69–0.73 mm; EW 1.01–1.10 mm; AL 0.90–0.93 mm; AW 1.05–1.20 mm. Antennae with antennomeres II–VIII slightly longer than in male, successively broadened towards apices; antennomeres IX–XI not modified, smaller than in male, antennal club indistinct.

Etymology. This species is named after the collector of the holotype, Mr. Kyôichi Kinomura, who is the super- visor of the first author.

Distribution. Japan: Honshû (Gifu-ken).

Biology. This species has been collected from nests of Aphaenogaster japonica , A. famelica , and Lasius meridionalis ( Maruyama et al. 2013) .

Figures

FIGURE 10. A, B: Habitus of Tmesiphorus kinomurai sp. nov., C, D: left antenna. A, male; B, female; C, antenna in dorsal view; D, antennal club in ventral view by SEM.

FIGURE 11. Tmesiphorus kinomurai sp. nov., male. A, head; B, head in dorsal view; C, pronotum; D, elytra; E, abdomen; F, right protarsus.

FIGURE 12. Male genitalia of Tmesiphorus kinomurai sp. nov., A, ventral view; B, lateral view; C, dorsal view.