Heliscus eclipticus (Truqui, 1857)

Jimenez-Ferbans, Larry, Maestre-Guerra, Ana, Villalba-Fuentes, Evelin, Barros-Barrios, Mayelis M. & Munoz-Montero, Jeison, 2023, Passalidae (Coleoptera, Scarabaeoidea) from the Caribbean coast of Colombia: synopsis, key, and new species description, ZooKeys 1179, pp. 243-297 : 243

18. Heliscus eclipticus (Truqui, 1857)

Fig. 20

Diagnosis.

28.7-32.5 mm total length. Anterior border of the labrum straight or slightly concave. Frontoclypeus straight, not swollen in the middle. Frontal-clypeal suture present and strong. Internal tubercles conspicuous, joined to central tubercle by Y-shaped ridges. Central tubercle small, with apex not free; lateroposterior tubercles distinct and transverse, with a superior groove extending over the total length of the tubercles. Frontal fossae pubescent posteriorly. Postfrontal groove complete, slightly erased in the middle. Mediobasal area of the mentum glabrous. Marginal groove over anterior border of the pronotum not expanded. Mesosternum glabrous. Metasternum pubescent anterolaterally and in lateral groove; disc not delimited by punctations. Mesotibiae and metatibiae with a small spine or unarmed. Humeri and epipleura glabrous; anterior vertical face of elytra pubescent.

Figures

Figure 20. Heliscus eclipticus (Truqui, 1857) A head and pronotum in dorsal view B habitus dorsal C habitus ventral D habitus lateral. Scale bars: 2.0 mm (A); 3.0 mm (B, C, D).