Lemodes (Lagriomorpha) angulata Young, 2012, new species
Creators: name: Young, Daniel K.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Anthicidae
Lemodes
Lemodes angulata

description: Lemodes (Lagriomorpha) angulata, new species
(Figs. 1–3)
Description. Length 4.7 mm (n=1). Dorsal and ventral surfaces, legs, and antennae moderately densely covered with short, mostly decumbent setae, dorsum and elytra also with a few longer, semierect to erect setae.
Adult (sex not determined) (Dorsal habitus: Fig. 1). Head and mouthparts coppery-orange; mandibles rufopiceous, at least in part. Dorsal surface of head (Fig. 2) confusedly, conspicuously, moderately coarsely punctate, lateral and ventral aspects with punctures less coarse, cranial neck coarsely punctate. Compound eyes small, moderately coarsely-faceted, slightly protruding. Tempora (measured from cranial neck constriction anteriorly to posterior rim of compound eye) 0.85X dorso-longitudinal length of compound eye. Left antenna with antennomeres 1–3 and small portion of 4 remaining; right antenna with antennomeres 1–3 intact; antennomeres 1–3 cinnamoneous-orange; antennae densely covered with stout, semierect and erect setae. Terminal segment of maxillary palpus somewhat expanded apically. Dorsal surfaces of thorax coppery-orange; visible ventrites amber; pronotum (Fig. 3) strongly hourglass-shaped, widest anterad the middle, densely covered with coppery-orange setae, coarsely, closely punctate; prothoracic coxal cavities widely open externally; scutellum flat, quadrate, densely punctulate, densely clothed in retrorsely decumbent, orange to coppery setae; mesosternum, metasternum and mesothoracic episterna with scattered, large, shallow punctures. Legs coppery-orange, tibiae suffused with rufopiceous pigmentation (Fig. 1); paired, dorsal tibial carinae weakly developed; tibial spurs short, stout; penultimate tarsomere slightly dilated, bilobed; tarsal claws simple. Elytra coppery-orange in basal third (measured along suture), remainder metallic blue-violet, with anterior margin of dark pigmentation conspicuously, angulately advancing along elytral sutures; each elytron bearing a vaguely defined patch of swirled setae in distal 1/2 juxtaposed between the coppery-orange and blue-violet pigment line (possibly associated with one or more glandular pores); elytra elongate, 2.44X longer than width across sub-basal humeral area, covering abdomen, margins subparallel along much of length; elytral surface rather coarsely, somewhat deeply, confusedly punctate, surface between punctures smooth to minutely, shallowly punctulate. Ventral surface of abdomen rufotestaceous to amber.
Type. Holotype (sex undetermined, point-mounted): [First label]: [NEW GUINEA] N. Guinea: NE// Bulolo, 700m // 31.XII. 1969; [Second label]: J. Sedlacek// Collector//BISHOP; [Third label]: Auto-Montaged// digital image(s)// per D. K. Young; [Fourth label]: HOLOTYPE:// Lemodes // (Lagriomorpha)// angulata // Young. (BPBM)
Distribution. As detailed above, L. angulata is presently known only from the type locality, the town of Bulolo, in the Morobe District of Papua New Guinea; near - 7.204574° S, 146.631785° E.
Diagnosis. The small body size (<6mm) and distinctly bicolored elytra of L. angulata, with orange pigmentation restricted to the basal 1/3 and advancing along the suture (Fig. 1), are similar to those of Lemodes rugosa Young (Fig. 16). The tempora (far more strongly produced in L. rugosa), pronotal shape (distinctly more constricted – more strongly hourglass-shaped in L. angulata), and elytral surface (more coarsely and deeply punctured in L. rugosa) are a few of the many differences that easily differentiate the two species.
Etymology. The specific epithet, angulata, is derived from the Latin root, “ angul- ” (= a angle), and “- ata ” from the Greek, - atalant (= equal to). The name refers to the angulate, chevron-shaped form of the anterior edge of the dark, metallic-bluish region of the elytra.
description: Published as part of Young, Daniel K., 2012, Five new species of Lemodes (Lagriomorpha) (Coleoptera: Anthicidae: Lemodinae) from Indonesian and Papuan New Guinea with a revised key to the species, pp. 15-27 in Zootaxa 3316 on pages 16-17, DOI: 10.5281/zenodo.209580