Trogellus (Mayaesalus) catrachitus, Paulsen, 2013

Paulsen, M. J., 2013, A new genus for the Neotropical species of Aesalus Fabricius, with descriptions of eight new species (Coleoptera: Lucanidae: Aesalinae), Insecta Mundi 2013 (325), pp. 1-25 : 16

Trogellus (Mayaesalus) catrachitus Paulsen, new species.

Type Material. Holotype male ( FSCA) labeled: a) “ HONDURAS: Octoepe- / que (sic), El Portillo / 7 Oct. 1993 / R. Turnbow”; b) red paper, “ Trogellus / catrachitus [male symbol] / Paulsen, 2012 / HOLOTYPE ”.

Description. Holotype male. Length: 5.8 mm. Width: 3.5 mm. Head: Frons flat, punctate; punctures large, separated by ¼ to 1 puncture diameter. Clypeus rounded, apex not produced. Frons not distinctly flattened. Canthus long, length approximately 2× width. Mandibles each with 1 strong internal tooth, externally lacking tooth at angulation. Pronotum: Lateral margin explanate in anterior view. Surface densely punctate, lacking tubercles at base of bristled punctures; punctures large. Elytra: Surface with blunt bristles, bristles long (as long as distance to next bristle in row). Legs: Protibiae quadridentate, teeth small, margin between teeth slightly concave. Mesotibia with 3 external teeth (proximal tooth smaller). Metatibia with 1 large, median tooth and 1 smaller tooth distally; apex acute. Male genitalia: Parameres narrow and short, 1/3 as long as median lobe; median lobe asymmetrical, cylindrical medially (not bulbous; Fig. 25, 29 ).

Distribution. HONDURAS: Ocotepeque (1): El Portillo.

Temporal Distribution. October (1).

Diagnosis/Remarks. The species is distinguished from T. narizotus by its less produced clypeus. It is similar to T. trifinius but differs in the structure of the median lobe of the male genitalia. In T. catrachitus , the median lobe is simply cylindrical medially, and the membranous apical portion smaller and more sclerotized. Also, the protibial teeth are smaller, the frons not strongly flattened, the elytral bristles are distinctly longer, and the ocular canthus more elongate.

Etymology. The specific epithet is a Latinized form of the term ‘ catracho’, a colloquial name for Hondurans, with the diminutive suffix -ito used in that country, resulting in ‘ catrachito ’ and meaning ‘little Honduran’. It is used as a noun in apposition, and the gender is masculine.

Figures

Figures 24–30. Male genitalia of Trogellus subgenus Mayaesalus species, dorsal (Fig. 24–26) and right lateral (Fig. 28–30) views. Outlines of genitalia in dorsal view shown to the right of each. 24, 28) T. narizotus, n. sp. 25, 29) T. catrachitus, n. sp. 26, 30) T. trifinius, n. sp.