Eustra gomyi Deuve, 2001

Fedorenko, D. N., 2019, New or little-known species of the genus Eustra Schmidt-Göbel, 1846 (Coleoptera: Carabidae: Ozaenini), Russian Entomological Journal 28 (1), pp. 5-16 : 9

2. Eustra gomyi Deuve, 2001

Deuve, 2001: 566 (Hoa Binh, northern Vietnam).

MATERIAL. Holotype ♂ (MNHN) labelled: ‘HOLOTYPE’, ‘Hoa-Binh, Tonkin, A. de Cooman ’, ‘Muséum Paris, Coll. Ch. ALLUAUD’, ‘ Eustra , gomyi n. sp., Holotype [handwritten], Th. Deuve det. 1996’.

REDESCRIPTION. As the previous species except as follows: BL 2.95 mm, body shiny yellow, elytral disc vaguely infuscated. Elytral microsculpture nearly indistinct except along sides.

Supra-ocular carina fine between the level of anterior margin of eye and gena, imperceptible before and behind; supra-antennal carina running just inside up to eye midlength.

Pronotum cordate, only a third wider than long, PW / PL 1.33, PW / HW 1.10, broadest less than a third from apex, PLw / PL 0.29, sides subsinuate behind apical angles and before basal ones; base barely narrower than apex, PB /PA 0.94, truncate medially, its sides straight; basal angles obtuse and sharp. Lateral margin moderately explanate and slightly reflexed in apical half, narrowly explanate and more reflexed behind, still more so at basal angles; basal bead missing, almost indistinct laterally; lateral edge imperceptibly tuberculate, setulose at tubercles; median line, apical and basal impressions fine, latter two V- and inversely V-shaped, respectively. Basal foveae smooth, oblong and fairly deep, almost reaching middle, slightly diverging before basal transverse impression. Disc rather smooth.

Elytra: EL / EW 1.4, EW / PW 1.8 (both ratios are rough following widely unlocked elytra); base truncate, humeri rather widely rounded, and sides distinctly rounded; USS 9+4+5. Antennae submoniliform, slender, barely wider at apex than at base, with antennomere 10 as long as wide.

DIAGNOSIS. Besides the slight difference in the shape of aedeagus, this species is distinctive from E. cariniceps sp.n. in having antennomere 10 as long as wide, pronotum cordate and distinctly longer, with sides subsinuate in front of obtuse basal angles, and sides of base straight.

DISTRIBUTION. Known from the type locality only.

HABITATS AND HABITS. No data.