Mecyclothorax mapura Perrault, 1984: 28

Liebherr, James K., 2013, The Mecyclothorax beetles (Coleoptera, Carabidae, Moriomorphini) of Tahiti, Society Islands, ZooKeys 322, pp. 1-170 : 25-26

9. Mecyclothorax mapura Perrault, 1984: 28

Identification.

Among Mecyclothorax muriauxi group species with setal formula 1101, this species exhibits the smallest, least convex eyes (Fig. 12A); ocular ratio 1.43, ocular lobe ratio 0.76. As in Mecyclothorax poria , the bisetose pronotum is broadest basally, however in this species the median base is margined by about seven longitudinal strigae along its juncture with the convex disc. The dorsal surface of the head capsule is glossy, with only indistinct sculpticells associated with wrinkles emanating from the frontal grooves. The pronotal disc is covered with a shallow, indistinct transverse mesh, the sculpticell breadth 2 –3× length, and the discal elytral intervals exhibit dense transverse microsculpture; a mixture of transverse mesh and transverse lines. The male aedeagal median lobe apex is broadly expanded dorsoventrally, with the ventral surface not expanded from the more basal curvature of the shaft’s ventral surface (Fig. 13D). As in other species in the group, the male flagellar plate is elongate, its length 0.5 × the distance from parameral articulations to the flattened apex. Standardized body length 6.1 mm.

Distribution and habitat.

The holotype specimen was collected between 900 and 1200 m elevation on Mapura, the ridge NNW of Pihaaiateta of the Pito Hiti-Orohena massif.