Parantis, 2017

PARANTIS MOTYKA, MASEK & BOCAK GEN. NOV.

Type species: Calochromus triguttatus Kleine, 1929: 260 (hereby designated).

Figure 5H, J View Figure 5

Differential diagnosis: Parantis gen. nov. and Micronychus share a characteristic sclerotized internal sac ( Fig. 5I, J View Figure 5 ). Parantis differs from the latter in the short antennomere 3 ( Fig. 5Q View Figure 5 ), minute mouthparts and absent rostrum ( Fig. 5H View Figure 5 ).

Description: Male: Body medium-sized, 9 – 18 mm long, parallel-sided, dorso-ventrally flattened. Head small, partly hidden by pronotum, non-rostrate, movable, prognathous to hypognathous. Eyes small, hemispherically prominent, frontal interocular distance three times as long as maximum eye diameter. Labrum sclerotized, transverse, with long setae at anterior margin; mandibles minute, curved in apical part, incisor margin simple; maxillary palpi four-segmented, slender, apical palpomere variable in shape, flat, more or less pointed apically. Antennal tubercles conspicuous, separated by narrow straight depression. Antennae 11-segmented, moderately long, surpassing humeral third of elytra, filiform, scapus pear-like, robust, pedicel small, antennomere 3 short, never more than twice as long as pedicel, antennomeres 4 – 10 approximately same length, gradually shorter to apex of antennae, antennomere 11 longest, slender, pointed at apex. Pronotum transverse to quadrate, parallel-sided, with deep median depression, anterior angles prominent, posterior ones slightly pointed to weakly rounded. Scutellum short, nearly quadrate, posterior margin simple, at most with shallow incision. Elytra flat, parallel-sided, humeri rounded, elytra with four straight longitudinal costae, costae are moderately robust at humeri, very weak apically, transverse costae absent. Legs slender, flattened, tarsi five-segmented, tarsomeres 1 – 4 with membranous pads, tarsomere 5 long, claws simple, slender. Male genitalia trilobate, phallus and parameres similar length, parameres slender apically, phallobase asymmetrical, internal sac sclerotized.

Female: Similar to male, without sexual polymorphism in the shape of antennae.

Distribution: India, China: Yunnan, Hubei (Fig. S11, Supporting Information).

Etymology: The name Parantis is a matronym in honour of Justinah Parantis , a biologist from the Sabah National Park Authority, Poring, Malaysia. Gender: masculine.

KEY TO THE CALOCHROMINI GENERA*