Macrodactylus zunilensis 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 : 581-582

Macrodactylus zunilensis Bates, 1887

Figs. 56, 81–83, 87

Material examined. 96 specimens: 48 ♂, 48 ♀.

Diagnosis. Body length 8.5–10.0 mm; integument reddish yellow; dorsally with dense vestiture of scale-like, reddish yellow, slightly flattened setae, most dense in sutural region of elytra; pygidium with scattered setae; femora reddish yellow; tibiae reddish yellow with the apices black; tarsi black with rings of white setae (Fig. 56); parameres stout, oval, glabrous, completely fused dorsobasally, forming an oval in distal view, apices lanceolate, the dorsobasal region with an extra laminar projection internally, but in lateral view, it is evident that it is part of the parameres (Figs. 81–82); female with vestiture and color similar to male; genital plates (Fig. 83).

Natural history. This species inhabits rain forests ranging from 1,000 to 3,000 m (additional information in Arce-Pérez & Morón 2011).

Geographical distribution. Mexico (Chiapas) , Guatemala (Chímaltenango, Escuintla, Guatemala, Huehuetenango, Quetzaltenango, Sacatepéquez), and El Salvador (Fig. 87).

Figure 87. Distribution of Macrodactylus in the Central American Nucleus: M. lineatus (red circle), M. nigripes (green circle), M. rufescens (blue circle), M. sericeicollis (yellow circle), M. zaragozai (pink circle), M. zunilensis (purple circle).