Trephionus shibataianus Habu, 1978

Sasakawa, Koji & Ito, Hirotaro, 2018, Taxonomic notes on the ground beetles in the genus Trephionus Bates, 1883 from central Honshu, Japan (Coleoptera, Carabidae, Sphodrini, Synuchina), ZooKeys 742, pp. 91-104 : 97-98

Trephionus shibataianus Habu, 1978 [Japanese name: Shibata-hoso-hirata-gomimushi] Figs 6, 16

Trephionus shibataianus : Habu (1978): 405, figs 803, 816, 825, 826, 830, 832 (holotype ♂, "Inago Spa, Nagano Pref." [the foot of Mt. Naka, the Yatsugatake Mountains]); Tanaka (1985): 135, plate 25-fig. 11 (part); Yoshitake et al. (2011): 14 (part); Hovorka and Sciaky ( 2017): 794.

Material examined.

1♂, Karasawa Spa, Chino-shi, alt. ca. 1900 m (the foot of Mt. Naka, the Yatsugatake Mountains), Nagano Pref., 13-28.VIII.1999, R. Shimoyama leg.

Diagnosis. Similar to T. subcavicola Uéno and three species to be described below in having truncate apex of aedeagus. Readily distinguished from T. subcavicola by the absence of inner sulcus of mid and hind tarsal segment 1 (present in T. subcavicola ; Habu 1978; Tanaka 1985). Distinguished from the other three species by the smaller PI (i.e., narrower pronotum).

Description.

Body length: ♂, 8.4 mm (n = 1). PI: ♂, 1.19 (n = 1). Head and pronotum black; elytra blackish brown to black. Pronotal lateral margins sinuate before hind angles (Fig. 6). Mid and hind tarsal segment 1 sulcate on outer side, not on inner side; tarsal segment 5 lacks secondary setae on dorsal side. Apex of aedeagus truncate (Fig. 16c); endophallus (Fig. 16a, b) stout, almost straight, directed posterodorsally; gonopore opening directed right-dorsoposterolaterally; dorsobasal lobe widely swollen, with BD as wide as AW; both sides of laterobasal lobe widely swollen, with BD as wide as AW; dorsoapical lobe narrowed apically, weakly bent at subapical part, with BD as half of AW; sclerotization of sclerotized lobe the same as aedeagus; sclerotized rim of gonopore indistinct.