Cyllodes Erichson, 1843

Liu, Meike, Yang, Xingke & Huang, Min, 2016, One new species and one newly recorded species of Cyllodes Erichson from China (Coleoptera: Nitidulidae: Nitidulinae), Zootaxa 4079 (3), pp. 345-356 : 346

Cyllodes Erichson, 1843

Cyllodes Erichson 1843: 342 ; Kirejtshuk 2008: 118 (Type species: Strongylus ater Herbst, 1792 ). Strongylus Herbst 1792: 179 (Type species: Strongylus ater Herbst, 1792 ).

Mecyllodes Sharp 1891: 357 (Type species: Mecyllodes clavicornis Sharp, 1891 ).

Pseudocamptodes Grouvelle 1896: 76 (Type species: Pseudocamptodes africanus Grouvelle, 1896 ).

Description. Body highly convex dorsally. Dorsal surface smooth and glabrous.

Head moderately transverse with surface punctate. Antennae 11-segmented with 3- or 4-segmented loose club. Scape expanded. Pedicel small, shorter than antennomere 3. Antennal grooves distinct, convergent. Labrum short with anterior margin broadly concave with an abbreviated medial notch. Apical edge of mandibles dentate; molar region with large transverse ridges; prostheca with setal brush. Maxillary palpi with three segments, terminal segment elongate and somewhat conical. Labial palpi with terminal segment barrel-shaped. Mentum broad with minute punctures along lateral and posterior margins.

Pronotum somewhat transverse, highly convex. Anterior angles evenly rounded; posterior angles rounded to projecting. Anterior margin with deep trapezoidal notch in medial region; lateral margins evenly arcuate to posterior angles; posterior margin almost straight, slightly expanded in medial region. Posterior prosternal wall present and prosternum not prolonged at apex. Mesoventrite oblique and carinate, usually concealed by the meeting of the pro- and metaventrite. Axillary sclerites present on mesoventrite. Metaventrite protuberant, widely separating the middle coxae. Elytral apices rounded separately with well-developed punctate striae. Scutellar shield large and obvious, presenting three kinds of shapes: semicircular, inverted-trapezoidal, subtriangular. Femora enlarged, almost 1.5–2.5 times as wide as corresponding tibiae. Outer apical angle of tibia acute but not spiniform; meso- and metatibia without sublateral line of setae. Anterior tarsi moderately, middle feebly dilated. Tarsomeres 1–3 bilobed and dilated with dense setal pads of ventrally short setae and longer lateral setae. Axillary space present. Claws simple.

Male genitalia well sclerotized. Tegmen with an unpaired long lobe ventrally, shallowly excised at apex. Female genitalia with gonocoxites long and apically fused along midline and broadened basally. Styli absent.

The genus Cyllodes is similar to the genera Neopallodes Reitter, 1884 and Viettherchnus Kirejtshuk, 1985 . From Neopallodes , as well as from most other genera of Cyllodini , Cyllodes differs in having three basal tarsomeres of posterior tarsi dilated to bilobed and dorsoventrally depressed. Viettherchnus differs from Cyllodes in having a modified head capsule and mandibles.