Macrodactylus fulvescens Bates, 1887

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 fulvescens Bates, 1887

Figs. 16, 33–35, 84

Material examined. 86 specimens: 63 ♂, 23 ♀.

Diagnosis. Body length 10–11 mm; integument of the body black; antennae yellow (antennal club with the apex sometimes darkened); pronotum black, with dense pale yellow vestiture; elytra yellowish red with dense, pale yellow vestiture, the setae slightly flattened; pygidium black with pale yellow vestiture; femora yellow; tibiae yellow, with black apices; tarsi notably darkened or black; abdomen black; tarsi without rings of white setae (Fig. 16); parameres glabrous or with small white setae, fused dorsobasally, forming an oval in distal view, with apex lanceolate (Figs. 33–34). Female similar to male; genital plates (Fig. 35).

Natural history. This species inhabits forests between 1,000 and 2,500 m in Guatemala (additional information in Arce-Pérez & Morón 2000, 2011).

Geographical distribution. Western and central Mexico (including Chiapas) to south-central Guatemala (Coyotenango, Huhuetenango, Santa Rosa) (Fig. 84).