Macrodactylus dimidiatus Guérin-Méneville, 1844

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 : 574

Macrodactylus dimidiatus Guérin-Méneville, 1844

Figs. 15, 30–32, 86

Material examined. 119 specimens: 63 ♂, 56 ♀.

Diagnosis. Body length 10–13 mm, dorsally glabrous, antennae, clypeus, pronotum, basal half of the elytra, pygidium, and legs (except the apex of the tibia and the tarsi) orange yellow; head (except clypeus), distal half of the elytra, and tarsi iridescent black or dark blue; venter black with short yellow vestiture (Figs. 15); parameres strongly curved before apex, without setae on lateral margins (Figs. 30–31). Female similar to male; genital plates (Fig. 32).

Natural history. This species inhabits tropical rain forests, tropical deciduous forests, plantations, and cool forests between 800 and 2,250 m (additional information in Arce-Pérez & Morón 2000, 2005, 2011).

Geographical distribution. Mexico (Chiapas, Oaxaca) , Guatemala (Alta Verapaz, Baja Verapaz, Huehuetenango, Izabal, Zacapa) , Belize (Toledo), and Honduras (Comayagua, Cortes, Santa Bárbara, Yoro) (Fig. 86) .