Macrodactylus championi Bates, 1887 Figs. 14, 27–29, 85 Material examined. 73 specimens: 41 ♂, 32 ♀. Diagnosis. Body length 13 mm, dorsally glabrous, totally black with steel blue iridescence; antennal flagellum, anal plate, pygidium, and legs (except tarsi) reddish; venter with long, yellowish-red vestiture; tarsi with rings of long, white setae (Fig. 14); parameres large, circular with outer margins slightly angulate and a protuberance near the base (lateral view), and their apices lanceolate and acute, with rows of long, thin setae on lateral margin in distal half (Figs. 27–28). Female similar to the male except as follows: pronotum with abundant recumbent vestiture, long and velvety orange; pygidial plate domed, slightly prominent; genital plates (Fig. 29). Natural history. Adults are active in temperate and cold environments such as cloud and pine forests in Chiapas and Guatemala, ranging from 1,650 to 2,800 m (additional information in Arce-Pérez & Morón 2000, 2011). Geographical distribution. Mexico (Chiapas) and Guatemala (Baja Verapaz, Totonicapan) (Fig. 85).

Published as part of Arce-Pérez, Roberto & Morón, Miguel Ángel, 2020, Review of the species of Macrodactylus Dejean (Coleoptera: Scarabaeidae Melolonthinae) from the Central American Nucleus, pp. 567-584 in Zootaxa 4772 (3) on page 574, DOI: 10.11646/zootaxa.4772.3.7, http://zenodo.org/record/3819764