Abstract
The bethylid genus Foenobethylus Kieffer, 1913, unstudied for almost a century, is redescribed and assigned to the subfamily Pristocerinae based on a preliminary phylogenetic assessment. Four new species: F. bidentatus n. sp. (Brunei), F. elongatus n. sp. (Malaysia), F. emiliacasellae n. sp. (Thailand), and F. thomascokeri n. sp. (Malaysia) are described, based on males only, as females remain unrecognised in this genus. All specimens are deposited in the Department of Entomology, the Natural History Museum, London, U.K. The type species F. gracilis Kieffer (Philippines), although unrepresented by any traceable specimen, can be distinguished from these species based on the original description. A key to the five known species of Foenobethylus is provided.References
Evans, H.E. (1964) A synopsis of the American Bethylidae (Hymenoptera, Aculeata). Bulletin of the Museum of Comparative Zoology, Harvard University, 132(1), 1–222.
Gordh, G. & Móczár, L. (1990) A catalog of the world Bethylidae. Memoirs of the American Entomological Institute, 46, 1–364.
Kieffer, J.J. (1913) Serphides des Iles Philippines. Insecta, Revue illustrée d’Entomologie, 3, 253–462.
Kieffer, J.J. (1914) Bethylidae. Das Tierreich, vol. 41. R. Friedländer und Sohn, Berlin. 595 pp.
Terayama, M. (1996) The Phylogeny of the Bethylid Wasp Subfamily Pristocerinae (Hymenoptera, Bethylidae). Japanese Journal of Entomology, 64(3), 587–601.
Terayama, M. (2003a) Phylogenetic Systematics of the Family Bethylidae (Insecta: Hymenoptera) Part I. Higher classification. The Academic Reports of the Faculty of Engineering of Tokyo Polytechnic University, 26(1), 1–15.
Terayama, M. (2003b) Phylogenetic Systematics of the Family Bethylidae (Insecta: Hymenoptera) Part II. Keys to subfamilies, tribes and genera in the world. The Academic Reports of the Faculty of Engineering of Tokyo Polytechnic University, 26(1), 16–29.