Zelenkaesalus Krikken, 2008

Paulsen, M. J., 2018, Generic changes in the stag beetle tribe Aesalini (Coleoptera: Lucanidae: Aesalinae) with the description of two new species, Insecta Mundi 666, pp. 1-10 : 5

Zelenkaesalus Krikken, 2008

Type species. Aesalus timidus Krikken.

Zelenkaesalus Krikken is elevated to generic status and contains the following six species, five of which represent new combinations, and one of which is described herein:

Z. cechovskyi (Huang et al.) , n. comb. MALAYSIA: Johor; SINGAPORE

Z. gedeensis (Huang and Wu) , n. comb. INDONESIA: Java

Z. javanus (Krikken) , n. comb. INDONESIA: Java

Z. pazuzus Paulsen , n. sp. PHILIPPINES: Luzon

Z. sabahensis (Zelenka) , n. comb. MALAYSIA: Sabah (Borneo)

Z. timidus (Krikken) , n. comb. INDONESIA: Borneo, Sumatra; MALAYSIA: Pahang, Perak; THAILAND

The genus is defined by the presence of well-developed sulci on the abdomen ( Fig. 2b ) and metaster- num for receiving the entire tibia and tarsus. The canthus is short ( Fig. 5 ) and the eye in dorsal view is almost entirely covered by the pronotum when the head is retracted. The dorsal vestiture includes clumped scales, scattered bristles, and a low covering of minutely branched scales as in Trogellus species ( Paulsen 2013). The branched scales generally anchor a waxy exudate, unless abraded.

Figures

Figures 1–2. Zelenka holotypes. 1) Holotype of Echinoaesalus jaechi Zelenka. a) Dorsal habitus. b) Abdomen, ventral view. c) Labels. 2) Holotype female of Echinoaesalus sabahensis Zelenka. a) Dorsal habitus. b) Abdomen, ventral view, showing complete leg-shaped sulci. c) Labels. Photos courtesy H. Schillhammer (Naturhistorisches Museum, Vienna).

Figures 3–5. Generic differences of ocular canthus/eye and clypeal apex. 3) Echinoaesalus spp. 4) Strabaesalus spp. 5) Zelenkaesalus spp.