Trephionus niumontanus Sasakawa

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 : 95-97

Trephionus niumontanus Sasakawa sp. n. [Japanese name: Inoue-hoso-hirata-gomimushi] Figs 4, 14

Trephionus kinoshitai : Inoue (2013): 69, fig. 1.

Type material.

Holotype: ♂, Mt. Kunimi, asl. ca. 480 m, Fukui-shi, Fukui Pref., 27.VI.2012, S. Inoue leg. Paratypes: 1♀, same data as the holotype; 2♀, Mino-cho, asl. ca. 480 m, Fukui-shi, Fukui Pref., 27.VI.2012, S. Inoue leg.

Diagnosis.

Similar to T. kinoshitai and T. cylindriphallus sp. n. in having secondary setae on dorsal side of mid and hind tarsal segment 5, but distinguished by larger body.

Description.

Body length: ♂, 10.6 mm (n = 1); ♀, 10.9 mm (mean ± SD: 10.9 ± 0.03 mm, n = 2). PI: ♂, 1.23 (n = 1); ♀, 1.25-1.26 (n = 2). Dorsal surface black. Pronotal lateral margins sinuate before hind angles (Fig. 4). Mid and hind tarsal segment 1 bisulcate, segment 5 with two secondary setae on dorsal side. Apex of aedeagus rounded; endophallus (Fig. 14) slender, directed posterodorsally at basal 1/3, bent and directed posteriorly at middle 1/3, bent and directed right-laterally at apical 1/3; gonopore opening directed right-anterolaterally; dorsobasal and both sides of laterobasal lobes absent; dorsoapical lobe narrowly swollen, with BD half of AW; sclerotization of sclerotized lobe weaker than of aedeagus; sclerotized rim of gonopore not distinct.

Etymology.

The name refers to the Niu Mountains, where the type specimens were collected.