Macrodactylus sylphis 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 : 580-581

Macrodactylus sylphis Bates, 1887

Figs. 53, 72–74, 84

Material examined. 6 specimens: 3 ♂, 3 ♀. Diagnosis. Body length 11–13 mm; integument black, strongly sericeous; clypeus, palps, antennae, elytra, fem-

ora, and tibiae reddish yellow (orange); pronotum black with a short band of yellow setae in apical half, and sparse setae near the edges of the disc; prosternal process reduced or absent; elytra glabrous except for stout, long black setae at base, along the suture and near scutellum; pygidium dark brown or reddish yellow, with scattered scale-like setae on center of disc; tarsi black without rings of setae (Fig. 53); parameres large, oval, glabrous, width uniform, apices triangular (Figs. 72–73); female with vestiture and color similar to male, genital plates (Fig. 74).

Natural history. This species inhabits cloud forests between 500 and 1,600 m (additional information in Arce- Pérez & Morón 2005, 2011, 2018).

Geographical distribution. Guatemala (Izabal), Nicaragua (Chontales), Costa Rica, and Panama (Fig. 84).