Open Access

Matthew J. Paulsen

• The status of genera and species in the stag beetle tribe Aesalini (Coleoptera: Lucanidae: Aesalinae) is revised. The Asian subgenus Zelenkaesalus Krikken, formerly included within Echinoaesalus Zelenka, is elevated to generic level based on the presence of complete ventral sulci and the form of the ocular canthus. This results in the following new combinations: Z. cechovskyi (Huang et al.), Z. gedeensis (Huang and Wu), Z. javanus (Krikken), Z. sabahensis (Zelenka), and Z. timidus (Krikken). Zelenkaesalus pazuzus Paulsen, new species, is described from the Philippines and is the first record of the subfamily for the country. A new genus Strabaesalus is created for species of Echinoaesalus that have a narrow dorsal lobe of the eye, acuminate clypeus, and lack abdominal sulci. This results in the following new combinations: S. borneoensis (Huang and Imura), S. hidakai (Araya et al.), and S. schuhi (Zelenka). In the Americas, Trogellus trajectus Paulsen, new species, is described from southern Panama. The male habitus and male genitalia of Trogellus maesi Paulsen are illustrated for the first time.