Macrodactylus tibialis Arce-Pérez & Morón, 2005

Arce-Pérez, Roberto & Morón, Miguel Ángel, 2020, Review of the species of Macrodactylus Dejean (Coleoptera: Scarabaeidae Melolonthinae) from the Central American Nucleus, Zootaxa 4772 (3), pp. 567-584 : 581

Macrodactylus tibialis Arce-Pérez & Morón, 2005

Figs. 54, 75–77, 84

Material examined. 115 specimens: 67 ♂, 48 ♀.

Diagnosis. Body length 12.0–12.5 mm; clypeus, antennae, pronotum, elytra, pygidium, apical sternite, femora, and tibiae orange; frons, scutellum, pterothorax, abdomen, and tarsi black; dorsally glabrous (Fig. 54), male with a strong, acute spine near the middle of the inner edge of each protibia; tarsi without ring of white setae; parameres stout, glabrous, evenly curved externally, forming an oval in distal view; apices weakly lanceolate (Figs. 75–76); female similar to male except, protibiae without acute spine; pygidium short, weakly convex; genital plates (Fig. 77).

Natural history. This species inhabits humid montane forests ranging from 1,000 to 1,800 m (additional information in Arce-Pérez & Morón 2005, 2011).

Geographical distribution. Honduras (El Paraíso, Olancho) and Nicaragua (Jinotega, Matagalpa) (Fig. 84) .