Megatrachys truncatia, Opitz, 2008

Opitz, Weston, 2008, Classification, natural history, and evolution of Epiphloeinae (Coleoptera: Cleridae). Part VII. The genera Hapsidopteris Opitz, Iontoclerus Opitz, Katamyurus Opitz, Megatrachys Opitz, Opitzia Nemésio, Pennasolis Opitz, new genus, Pericales Opitz, new genus, Pteroferus Opitz, new genus, and Turbophloeus Opitz, new genus, Zootaxa 1754, pp. 1-40 : 23-24

Megatrachys truncatia , new species

Map 2.

Holotype. ♀: MEXICO: Chiapas, 47.5 km NW Comitan , 18 Oct. 1988, R. Turnbow ( FSCA) (Specimen point mounted, gender symbol affixed to paper point; support card; locality label; FSCA acronymic label; holotype label.)

Diagnosis: The abruptly deflexed condition of the elytral apex and the large brown setal tuft on the cranial vertex will distinguish these large (about 8 mm) specimens from congeners.

Description: Length 7. 5 mm; width 1.8 mm. Form: Long oblong rectangulate. Integument: Dark brown; except legs yellow and with brown infuscations, cranial vertex with one large brown setal tufts, elytra with four small brown setal tufts, elytral setae gray, brown, or yellow. Head: Cranium coarsely punctate, eyes large, very convex; vertex between eyes broad. Thorax: Pronotal side margins with tubercle, anterior transverse depression prominent, anterior margin projected, disc roughly sculptured and with coarse punctations; elytral side margins parallel to posterior four-fifths, then acutely angled to apex, elytra subapical region truncated; disc subcorrugated and coarsely punctate; Abdomen: Female pygidium transverse.

Variation: One specimen examined.

Natural history: The holotype specimen was collected in October.

Distribution (Map 2): Known only from southern México.

Etymology: The trivial name is a Latin compound name formed from truncus (= cut off) and antia (= forlock). I refer to the highly setose and truncated condition of the elytral apex.