Nebria (Falcinebria) iidesana sp. nov. Figs 7, 20, 21 Japanese name: Iide-hime-marukubi-gomimushi

Nebria reflexa: Uéno (1985): 56 (part); Nakane (1963b): 19 (part).

Nebria (Paranebria) reflexa niohozana: Habu and Baba (1972): 3 (part).

Notes.

This species is known from the Iide Mountains. Sympatry with N. niohozana is considered confirmed based on an observation from the NARO collection, where paper cards affixed to a paratype male of this species and male specimen of N. niohozana were held together with the same pin. In external and endophallus characters, N. sagittata sp. nov. is a similar species. Nebria iidesana is distinguished from N. niohozana by a smaller body size and larger PPW/EL, and from N. sagittata sp. nov. by a right lateroapical lobe that is not narrowed apically.

Description.

Body length: ♂, 9.16-9.87 mm (mean ± SD: 9.53 ± 0.29 mm, n = 5); ♀, 10.25-10.64 mm (mean ± SD: 10.39 ± 0.17 mm, n = 6). PPW/EL: ♂, 0.319-0.350 (mean ± SD: 0.334 ± 0.013, n = 5); ♀, 0.321-0.338 (mean ± SD: 0.330 ± 0.006, n = 6). Ventral surface of aedeagal apex not concave. Dorsobasal lobe absent. Dorsomedian lobe absent. Dorsoapical lobe with the basal part protruding anterodorsally; the protrusion slightly smaller than the right laterobasal lobe; the apical portion directed dorsally, bifurcated at the apex; the right and left apices almost similar in size. 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, almost semispherical, slightly concave at the top. Left lateroapical lobe large, narrowed apically. Ventrobasal surface almost flat, without swelling.

Type materials.

Holotype: ♂ (NARO), Mount Takizawamine, alt. 1300 m, Kurokawa, Niigata Prefecture, Japan, 27.vii.1957, K. Baba leg. Paratypes (NARO): 3♂6♀, Kurokawa, Niigata Prefecture, Japan, K. Baba leg. (1♂, Wataba, 25.vii.1957; 1♀, Wataba, 23.vii.1957; 1♀, Wataba, 24.vii.1957; 1♀, Wataba, 25.vii.1957; 1♀, Tamogi, alt. 600 m, 25.vii.1957; 1♂, 18.ix.1959; 1♂2♀, 23.vi.1964); 1♂, Mount Kitamata, the Iide Mountains, Niigata Prefecture, Japan, 15.viii.1964, K. Baba leg.

Etymology.

The specific name refers to the Iide Mountains, where the type materials were collected.