Platerodrilus paradoxus ( Mjoeberg , 1925)

Masek, Michal & Bocak, Ladislav, 2014, The taxonomy and diversity of Platerodrilus (Coleoptera, Lycidae) inferred from molecular data and morphology of adults and larvae, ZooKeys 426, pp. 29-63 : 37-38

Taxon classification Animalia Coleoptera Lycidae

Platerodrilus paradoxus ( Mjoeberg, 1925)

Duliticola paradoxa Mjöberg, 1925: 134.

Platerodrilus paradoxus : Kazantsev 2002: 6.

Material examined.

Syntype. Male (BMNH), Borneo. Syntype. Female (BMNH), Lundu, Sarawak, G. E. Bryant, 6. 1. 14.

Diagnosis.

Platerodrilus paradoxus belongs to a group of Bornean species with robust and long parameres. The male of Platerodrilus paradoxus resembles Platerodrilus foliaceus but differs in the slender apex of parameres. Additionally these species differ in larval morphology (Figs 34, 40).

Redescription.

Male. Body 7 mm, dark brown, only humeri and elytral suture slightly lighter. Head small, with hemispherically prominent eyes, head with eyes wider than frontal margin of pronotum, eye diameter 1.9 times frontal interocular distance. Antennae compressed, covered with long, erected, dense pubescence. Pronotum flat, without carinae, 1.8 times wider than long at midline, frontal margin widely rounded anteriorly, frontal angles obtuse, lateral margins almost straight, posterior margin bisinuate. Elytra flat, parallel-sided, elytral costae inconspicuous, elytra 2.6 times longer than width at humeri. Legs slender, compressed, densely pubescent. Male genitalia with robust parameres, phallus slightly curved with bulbous tip. Parameres stout with hooked tip, apical half of ventral edge serrate. Phallobase wide, deeply emarginate.

Female larva. Body flat and wide (Fig. 34), pronotum parallel-sided at base, then gradually tapering to front, triangular, without any glabrous tubercles in disc, only small tubercles in middle part of posterior margins of thoracic segments, in middle of anterior pronotal margin four subequal tubercles; mesothorax strongly transverse, with rounded lateral margins and straight posterior margin, posterior angles obtuse, metathorax similar in shape with more acutely projected posterior angles. Abdomen with short, robust lateral processes.

Measurements.

Male. BL 6.9 mm, PL 1.0 mm, PW 1.9 mm, HW 2.0 mm, Edist 0.85 mm, Ediam 0.44 mm. Larva. BL 53.0 mm, PL 8.7 mm, PW 13.4 mm.

Distribution.

Malaysia: Sarawak. Known only from the type locality.