Cacodaemon proavus Strohecker, 1964

Figs 1F, 2F, 3F, 5E, 5F

Cacodaemon proavus Strohecker, 1964: 346; Shockley et al. 2009: 36.

Material examined.

1 female (NSMT), " Mt. Pia Oac (LT: 1,200m) Cao Bang Prov. [N-Vietnam] 22. V. 1999, S. Nomura leg." .

Diagnosis.

This is a distinct species in the genus by having the following characteristics: BA, DA, PA in the form of tubercles; HA carinate; apex of elytra rounded. In general appearance, this species is similar to Amphisternus sordidus Arrow, 1928 known from Vietnam and Laos, but differs from it by the mat and smooth dorsal surface (shiny and rugose in A. sordidus), widely carinate HA (narrowly carinate in A. sordidus), and BA in the form of a tubercle (carinate in A. sordidus).

Redescription.

Female. Body (Fig. 1F) oval, slightly convex dorsally, weakly shiny. Coloration of body black, but DA and PA faintly dull orange.

Head moderate in size, finely punctate. Antennae long, relatively stout; antennomere 3 longest, shorter than antennomeres 4 and 5 combined; club (antennomeres 9-11) weakly widened. Pronotum indistinctly and finely punctate, microreticulate, widest at middle, widely upturned in lateral parts; front corners triangular, minutely pointed at apices; lateral margins arcuate; posterior corners right-angled; PLM/PLS 0.75; PWM/PWA 1.52; PWM/PLM 1.80; PWM/PLS 1.35. Fore tibia (Fig. 2F) straight, relatively stout. Elytra (Fig. 3F) minutely and sparsely punctate, microreticulate; basal and lateral grooves shallow; BA in the form of a tubercle; HA carinate; DA tubercle, small and low; PA tubercle, small and low; apex of elytra rounded; EL/EWH 0.99; EL/PLM 2.66; EWH/PWM 1.49; EWH/EWM 1.21; TL/EWH 1.37.

Sternite VIII (Fig. 5E) shallowly concave at posterior margin. Ovipositor (Fig. 5F) bearing short setae along lateral margins of fused coxites; posterior margin of fused coxites weakly protruding; styli bearing short setae.

Male. Not examined. Male genitalia figured by Strohecker (1964).

Measurement. Female (N = 1). TL 7.43 mm; PWM 3.65 mm; PWA 2.40 mm; PLM 2.03 mm; PLS 2.70 mm; EL 5.40 mm; EWH 5.43 mm; EWM 4.50 mm.

Distribution.

Vietnam.

Remarks.

Strohecker (1964) described this species based on three specimens collected from "Mauson, Tonkin" (= Mt. Mauson, Loc Binh District, Lang Son Province, Northeastern Vietnam).