Cacodaemon proavus Strohecker, 1964

Yoshitomi, Hiroyuki & Pham, Thai Hong, 2022, The genus Cacodaemon (Coleoptera, Endomychidae) of Vietnam, ZooKeys 1081, pp. 127-136 : 127

publication ID	https://dx.doi.org/10.3897/zookeys.1081.75927
publication LSID	lsid:zoobank.org:pub:AD2D54F5-56D1-4DB2-B7F8-F3B3E0528394
persistent identifier	https://treatment.plazi.org/id/079B2E1C-8B25-532C-8E86-54CF99A0156F
treatment provided by	ZooKeys by Pensoft
scientific name	Cacodaemon proavus Strohecker, 1964
status

Treatment

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

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 View Figure 1 ) 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 View Figure 2 ) straight, relatively stout. Elytra (Fig. 3F View Figure 3 ) 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 View Figure 5 ) shallowly concave at posterior margin. Ovipositor (Fig. 5F View Figure 5 ) 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).