Macrodactylus montanus Arce-Pérez & Morón, 2000

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 : 575-578

Macrodactylus montanus Arce-Pérez & Morón, 2000

Figs. 20, 45–47, 86

Material examined. 37 specimens: 18 ♂, 19 ♀.

Diagnosis. Body length 12–13 mm; integument of the body black; clypeus red, antennal flagellum, elytra, legs and, pygidium reddish yellow; dorsum and venter with thin, scattered pale yellow vestiture; tarsi with rings of short, white setae (Fig. 20); parameres circular, setose, with a narrow ridge on its internal margins, expanded into a welldeveloped distal shelf-like ledge, apices strongly lanceolate, lateral margins on distal half with sparse, mediumsized setae (Figs. 45–46). Female similar to male; genital plates (Fig. 47).

Figures 48–56. Dorsal view of Macrodactylus . 48, Macrodactylus nigripes Bates ; 49, M. rufescens Bates ; 50, M. seiceicollis Bates ; 51, M. sericinus Bates ; 52, M. suavis Bate s; 53, M. sylphis Bates ; 54, M. tibialis Arce-Pérez & Morón ; 55, M. zaragozai Arce-Pérez & Morón ; 56, M. zunilensis Bates.

Natural history. This species inhabits temperate-cool or humid areas between 1,800 and 2,800 m (additional information in Arce-Pérez & Morón 2000, 2005, 2011).

Geographical distribution. Mexico (Chiapas) , El Salvador (Santa Ana), and Honduras (Ocotepeque, Lempira) (Fig. 86) .

Figures 57–83. Diagnostic estructures of male and female of Macrodactylus . Parameres, distal view; parameres, lateral view; genital plates, ventral view. 57–59, Macrodactylus nigripes Bates ; 60–62, M. rufescens Bates ; 63–65, M. seiceicollis Bates ; 66–68, M. sericinus Bates ; 69–71, M. suavis Bate s; 72–74, M. sylphis Bates ; 75–77, M. tibialis Arce-Pérez & Morón ; 78–80, M. zaragozai Arce-Pérez & Morón ; 81–83, M. zunilensis Bates.

Figure 84. Distribution of Macrodactylus in the Central American Nucleus: M. eniocanoi (yellow circle), M. escuintlaensis (blue circle), M. fulvescens (orange circle), M. hondurensis (purple circle), M. lineatocollis (red circle), M. sylphis (green circle), M. tibialis (pink circle).

Figure 85. Distribution of Macrodactylus in the Central American Nucleus: M. carrilloi (yellow circle), M. costulatus (blue circle), M. championi (green circle), M. sericinus (red circle).