PARACALOCHROMUS, Motyka & Masek & Bocak, 2017

SUBGENUS PARACALOCHROMUS SUBGEN. NOV.

Type species: Calochromus giganteus Pic, 1913 (hereby designated).

Figure 5D View Figure 5 .

Differential diagnosis: All species of this subclade of Calochromus are characterized by densely pubescent elytra and they never have metallically coloured elytra.

Description: Male: Body large to medium-sized, 8 – 25 mm long, parallel-sided. Head small, only slightly retracted in pronotum, movable, prognathous, without rostrum. Eyes small, hemispherically prominent, frontal interocular distance four times as long as maximum eye diameter in lateral view. Labrum sclerotized, small, widely rounded apically; mandibles long, robust, curved almost in right angle apically; maxillary palpi slender, four-segmented, apical palpomere pointed. Antennal tubercles well developed, close to each other, separated by deep groove; antennae 11-segmented, surpassing half of elytral length, filiform to weakly serrate, never flabellate, scapus pear-like, robust, pedicel minute, antennomeres 4 – 11 gradually more slender to apex, apical antennomere slender, pointed. Pronotum transverse, without apparent sharp carinae, only with clear longitudinal median impression, oblique folds laterally, anterior and posterior angles rounded. Scutellum small, flat, subquadrate. Elytra flat, parallel-sided, humeri rounded, with four longitudinal elytral costae, transverse costae absent. Legs slender, compressed, tarsi five-segmented, tarsomeres 1 – 4 with membranous pads, tarsomeres 1 and 5 similar in length, tarsomeres 2 – 4 gradually shorter. Male genitalia trilobate, phallus and parameres similar in length, parameres parallel-sided, phallobase asymmetrical, internal sac membranous.

Female: Similar to male, usually with large body, without sexual polymorphism in antennae.

Distribution: Indo-Burma, China, Japan and Australia.

Etymology: The name Paracalochromus refers to the close relationship with Calochromus s.s. Gender: masculine.

MACROLYGISTOPTERUS PIC, 1929