title: Notes on the genus Echinoaesalus Zelenka, 1993 (Coleoptera: Lucanidae), with the description of a new species from the Malay Peninsula.
abstract: Echinoaesalus cechovskyi new species is described from the Malay Peninsula. Echinoaesalus hidakai borneoensis Huang & Imura, 2011 is elevated to the species level as E. borneoensis new status. The male or female genitalia of Echinoaesalus timidus (Krikken, 1975), E. hidakai (Araya, Kon, & Johki, 1993), E. borneoensis, and E. sabahensis Zelenka, 1994 are described and illustrated for the first time. The intraspecific variation of E. timidus is discussed.
authors.affiliation: 503, Unit 1, #1 Dongtinghu Road, Qingdao, P.R. China.; Email: cmdhhxx@hotmail.com.
authors.forename: Hao
authors.initials: H
authors.lastname: Huang
authors.affiliation: Natural History Museum, Zoology Department, University of Florence, via Romana 17, 50125 Firenze, Italy.; Email: luca.bartolozzi@unifi.it.
authors.forename: Luca
authors.initials: L
authors.lastname: Bartolozzi
authors.affiliation: Technical Center, Tianjin New Wei San Industrial Company, Limited, P.R. China.; Email: natures@nws.cn.
authors.forename: Chang-Chin
authors.initials: CC
authors.lastname: Chen
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D001517:Coleoptera / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development; D005260:Female; D008296:Malaysia; D008297:Male; D009929:Organ Size