Mecyclothorax sinuatus Perrault, 1988: 240

Liebherr, James K., 2013, The Mecyclothorax beetles (Coleoptera, Carabidae, Moriomorphini) of Tahiti, Society Islands, ZooKeys 322, pp. 1-170 : 40-41

29. Mecyclothorax sinuatus Perrault, 1988: 240

Identification.

Beetles of this species appear quite similar to those of the sympatrically distributed Mecyclothorax ferruginosus , however consistent differences in proportions and punctation demonstrate that they are distinct. In this species, the pronotum is less transverse, MPW/PL = 1.25, and less constricted basally, MPW/BPW = 1.59. The elytra are more narrowly ovoid (Fig. 21D), with the lateral margins more narrowly rounded laterad the angulate humeri. The discal elytral striae are more distinctly punctate, with the punctures in striae 1-3 expanding the strial breadths adjacent to the anterior dorsal elytral seta. The frons and vertex are covered with an indistinct transverse mesh, the pronotal disc surface is partially glossy, with areas of transverse-mesh microsculpture, and the discal elytral intervals are covered with transverse lines irregularly joined into an elongate mesh. Setal formula 2122; standardized body length 5.0-5.2 mm.

Distribution and habitat.

This species is known from two female specimens collected between 800 and 1000 m elevation on Mont Teatara, Tahiti Iti.