Peltonotus gracilipodus Jameson & Wada, 2004

Jameson, Mary & Jakl, Stanislav, 2010, Synopsis of the aroid scarabs in the genus Peltonotus Burmeister (Scarabaeidae, Dynastinae, Cyclocephalini) from Sumatra and description of a new species, ZooKeys 34 (34), pp. 141-152 : 146-147

Peltonotus gracilipodus Jameson & Wada, 2004

Figs 8, 15, 20a–b, 23

Diagnosis. Within Sumatra, P. gracilipodus is separated from other species of Peltonotus based on the surface of the frons and clypeus that has multisetigerous punctures (shared with P. animus and P. sisyrus ; unisetigerous in P. cybele and P. talangensis ); form of the mentum that is rounded in the apical half (Fig. 8) (shared with P. animus and P. cybele ; triangular in P. sisyrus and P. talangensis ); form of the male genitalia (Fig. 20a–b); and form of the female epipleuron in ventral view (Fig. 15). Outside of Sumatra, P. gracilipodus closely resembles P. podocrassus Jameson & Wada 2004 from peninsular Malaysia. In fact, males of both species have very similar genitalic forms and females have very similar eplipleural forms. Other characters differ between the species (e.g., length of the metatibial spur, slender versus robust form of the fifth protarsomere in the male). Similarity in the genitalic form may provide evidence of recent isolation of ancestral populations in Sumatra and peninsular Malaysia.

Locality records ( Fig. 23 ) (n=13). SUMATRA. West Sumatera Province (10): Harau Valley (Payakumbuh near Bukittinggi), Padang, Pang Kavan, Siboga. No data (3).

Temporal data. March (2), April (2), June (2), July (1), October (3), November (1).

Remarks. Male and female specimens of P. gracilipodus are housed in BCRC, WADA, MLJC, MNHN.

5 Peltonotus animus 6 Peltonotus cybele 7 Peltonotus talangensis 500 Μm

8 Peltonotus gracilipodus 9 Peltonotus sisyrus Į0 Peltonotus talangensis

Figures 5–Į0. Maxilla (dorsal view) showing mala with or without lamellate setal brush and form. 5 P. animus (holotype) 6 P. cybele (holotype) 7 P. talangensis (holotype). Mentum (ventral view) showing form 8 P. gracilipodus 9 P. sisyrus Į0 P. talangensis (holotype).

Figures

Figure 23. Distribution of Peltonotus species in Sumatra.