Passalus (Passalus) interstitialis Eschscholtz, 1829

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

3. Passalus (Passalus) interstitialis Eschscholtz, 1829

Fig. 4

Diagnosis.

23.6-29.9 mm total length. Body flattened. Anterior border of the frons with two prominent secondary mediofrontal tubercles. Mediofrontal tubercles large, located on base of each laterofrontal tubercle. Central tubercle with apex not free. Lateroposterior tubercles distinct. Eyes large. Antennal club tetra-lamellate, fourth lamella reduced. Lacinia with apex bidentate. Mediobasal area of mentum glabrous and slightly protruding. Marginal pronotal groove occupying 2/3 of the pronotum anterior border. Prosternellum rhomboidal, truncate. Mesosternum glabrous, with distinct elongated scars. Metasternum pubescent anterolaterally and in lateral groove; disc smooth and delimited posteriorly to middle by punctations. Humeri pubescent, epipleura pubescent in basal third. Last abdominal sternite with complete marginal groove. Anterior ventral border of the profemur with distinct groove. Mesotibia lacking spine or with single small spine.

Comments.

Distributed from Mexico to Argentina ( Reyes-Castillo 1973) and Cuba, Grenada, Jamaica, and Trinidad and Tobago ( Jiménez-Ferbans et al. 2015). Sometimes confused with P. punctiger , P. interstitialis differs by its smaller size, flattened body, and apex of central tubercle not free.

Figures

Figure 4. Passalus (Passalus) interstitialis Eschscholtz, 1829 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).