Nebria (Falcinebria) reflexa Bates, 1883

Sasakawa, Koji, 2020, Taxonomic studies of the ground beetle subgenus Falcinebria Ledoux & Roux, 2005 (Coleoptera, Carabidae, Nebria) from Honshu, Japan, ZooKeys 902, pp. 37-60 : 37

Nebria (Falcinebria) reflexa Bates, 1883 Figs 2 , 5 , 17 Japanese name: Iwaki-hime-marukubi-gomimushi

Nebria reflexa : Bates (1883): 218 (original description), type locality: “Iwakisan” (originally stated), "Iwaki Japan", as stated in lectotype designation by Ledoux and Roux (1992: 45); Nakane (1963b): 19 (part); Uéno (1985): 56 (part).

Nebria reflexa reflexa : Ledoux and Roux (1992): 45 (lectotype (♂) designation).

Nebria (Orientonebria) reflexa reflexa : Farkač and Janata (2003): 94.

Nebria (Falcinebria) reflexa reflexa : Ledoux and Roux (2005): 829, plate-fig. 625; Yoshitake et al. (2011): 32; Huber (2017): 50.

Notes.

This species is known only from the type locality of Mount Iwaki and has the smallest body size among all species previously regarded as N. reflexa . Nebria reflexa is distinguished from N. sagittata sp. nov. and N. niohozana , which are relatively closely distributed and thus may be sympatric, by a T-shaped apex of the dorsoapical lobe. The morphological features of the lectotype male (Fig. 2 ) are compatible with specimens examined here as N. reflexa with respect to all macromorphological features, body length (8.88 mm), and PPW/EL (0.343).

Description.

Body length: ♂, 8.92-9.06 mm (mean ± SD: 9.00 ± 0.08 mm, n = 3); ♀, 9.19 mm (n = 1). PPW/EL: ♂, 0.339-0.356 (mean ± SD: 0.346 ± 0.009, n = 3); ♀, 0.312 (n = 1). Ventral surface of aedeagal apex not concave. Dorsomedian lobe largely swollen, directed right-laterally. Dorsoapical lobe with the basal part protruding right-dorsolaterally; the protrusion similar in size to the right laterobasal lobe; the apical portion directed right-ventrolaterally, bifurcated in a T shape. Right laterobasal lobe small, with the width from a ventral view narrower than the width of the gonopore protrusion from a lateral view. Left laterobasal lobe small, with the width from a ventral view narrower than the width of the gonopore protrusion from a lateral view. Right lateroapical lobe large, with the apex slightly protruding and bent anteriorly. Left lateroapical lobe bifurcated at the base, with one apex large and directed ventrally and the other similar in size to right laterobasal lobe and directed anteriorly. Ventrobasal surface almost flat, without swelling.

Materials examined.

3♂1♀ (NARO), Yunosawa, Mount Iwaki, Aomori Prefecture, Japan, 18.viii.1959, S. Ueno leg.

Figures

Figures 2, 3. Habitus dorsal views (a) and attached labels (b) of lectotypes of Nebria reflexa (2) and N. niohozana (3).

Figures 5 - 16. Habitus dorsal view of Nebria spp. 5 N. reflexa, a male from the type locality 6 N. sagittata sp. nov., holotype male 7 N. iidesana sp. nov., holotype male 8 - 10 N. niohozana males from Mount Chokai (8), Doai, a locality close to the type locality designated for the lectotype (9), and Mount Hakusan (10); 11 N. furcata sp. nov., holotype male 12 N. pisciformis sp. nov., holotype male 13 N. kuragadakensis sp. nov., holotype male 14 N. dichotoma sp. nov., holotype male 15 N. uenoi, a male from the type locality 16 N. chugokuensis sp. nov., holotype male.

Figures 17 - 21. Right lateral (a), ventral (b), dorsal (c), and posterodorsal (d) views of the endophallus and the left dorsolateral view of the dorsoapical lobe (e) of Nebria spp. 17 N. reflexa male from the type locality 18 N. sagittata sp. nov., holotype male 19 N. sagittata sp. nov., a paratype male from " Asahi-mura " 20 N. iidesana sp. nov., holotype male 21 N. iidesana sp. nov., paratype male from Mount Kitamata. Abbreviations: da, dorsoapical lobe; dm, dorsomedian lobe; go, gonopore; gp, gonopore protrusion; la, left lateroapical lobe; lb, left laterobasal lobe; ra, right lateroapical lobe; rb, right laterobasal lobe. Asterisk indicates that the gonopore protrusion or lobes are not fully everted.