Laius andamanensis sp. nov.

urn:lsid:zoobank.org:act: AB272070-CAEA-4964-8CFD-A219E93222F1

Figs 3B, 5C–D, 7B, 8B, 9B, 12

Diagnosis

Male antennomere III distinctly projecting laterally, shallowly concave in dorso-mesal portion, L/W = 0.70; aedeagal apex concave; gonoporal piece straight and slender; ligula long and slightly curved; additional sclerite absent.

Etymology

After the type locality, Andaman Islands, India.

Type material

Holotype

♂ (NHMB), “ ANDAMAN Is.: Havelock I. env. of village No. 4, 11°59’N, 92°58’E, 22. iv-14. V. 1998, Karel & Simon Majer leg.”.

Paratypes

22 ♂♂, 10 ♀♀ (NHMB, EUMJ), same data as for the holotype.

Description

Male

Body oblong, shining, densely covered with short black setae. Coloration of body black with dully bluish luster on elytra; labrum, maxillary palpomere I, and tarsi brown; antennomeres I–III yellowish-orange.

Head narrower than pronotum, very densely punctate; vertex slightly convex dorsally; eyes relatively large, prominent; HL/HW 0.76–0.90 (0.81). Antennae (Fig. 7B) long; antennomere III (Fig. 8B) transversal trapezoidal, distinctly projecting laterally, shallowly concave in dorso-mesal portion, L/W = 0.70; approximate ratio of each antennomeres (n = 1) as 8.3: 1.0: 5.0: 2.0: 2.2: 2.0: 2.0: 2.0: 2.0: 2.0: 3.5. Pronotum quadrate, widest near anterior margin, rounded and obscure in antero- and postero-lateral angles, punctate as in head; PW/PL 1.18–1.33 (1.24). Scutellum semicircular, covered with fine punctures. Elytra oblong, widest at apical 1/4; sides gradually expanded postero-laterally; EL/ EW 1.36–1.55 (1.45); EL/PL 2.52–2.88 (2.67); EW/PW 1.38–1.55 (1.48); TL/EW 2.30–2.56 (2.44). Legs relatively long and slender; fore tibia (Fig. 12A) enlarged, deeply excavate. Caudal margin of tergite VII shallowly concave.

Aedeagus (Fig. 9B) about 1.13 mm, concave at aedeagal apex (Fig. 12C). Gonoporal piece (Fig. 3B) straight, slender, 0.74 mm in GL; GL/AL 2.39. Ligula (Fig. 3B) relatively long, slightly curved; LL 0.27 mm; LW 0.11 mm; LL/LW 2.58; GL/LL 2.71.

Female

Similar to male in general appearance. HL/HW 0.75–0.80 (0.79); PW/PL 1.18–1.30 (1.23); EL/ EW 1.36–1.48 (1.41); EL/PL 2.44–2.73 (2.60); EW/PW 1.45–1.58 (1.51); TL/EW 2.30–2.43 (2.36). Antennae (Fig. 7B) long; antennomere III (Fig. 12B) distinctly expanded laterally, shallowly concave in dorsal portion, L/W = 2.42; approximate ratio of each antennomeres (n = 1) as 8.0: 1.0: 4.4: 2.2: 2.4: 2.2: 2.2: 2.0: 2.0: 2.0: 3.6

Measurements

Male (n = 20): TL 5.52–6.33 (5.79) mm; HL 1.00–1.15 (1.05) mm; HW 1.22–1.38 (1.30) mm; PW 1.48– 1.75 (1.61) mm; PL 1.20–1.48 (1.29) mm; EL 3.28–3.75 (3.45) mm; EW 2.18–2.70 (2.38) mm. Female (n = 6): TL 4.43–4.96 (4.67) mm; HL 0.75–0.85 (0.81) mm; HW 1.00–1.08 (1.03) mm; PW 1.20–1.42 (1.32) mm; PL 1.00–1.20 (1.07) mm; EL 2.60–3.00 (2.79) mm; EW 1.85–2.15 (1.98) mm.

Distribution

Only known from the type locality, India (Andaman Islands).

Remarks

This is distinct species in having transversal antennomere III of male.