Raractocetus Kurosawa, 1985

Lawrence, John F., 2020, The Australian Lymexylidae (Coleoptera: Tenerionoidea) with one new genus and two genera new to Australia, Zootaxa 4895 (2), pp. 211-238 : 227

Raractocetus Kurosawa, 1985

Raractocetus Kurosawa, 1985: 111 .

Type species: Atractocerus emarginatus Laporte, 1836 (original designation).

Diagnosis. Species of the genus Raractocetus differ from those of Arractocetus Kurasawa , Fuscicornis Philippi and Hymaloxylon Kurosawa and Leptonetron gen. nov. in having the eyes very large and contiguous (male) or subcontiguous (female) in frontal view. Raractocetus is distinguished from Atractocerus by the larger, shorter and more vertically oriented head, as wide as or wider than the anterior pronotal margin, more robust antennae and shorter elytra. A male from Barro Colorado Island, Panama fits the description of Atractocerus procerus Schenkling (1914) and has the head characters of Raractocetus , but A. procerus cannot be transferred to Raractocetus without examination of the type. If this specimen does belong to A. procerus , then the Neotropical species differs from both R. emarginatus and R. kreusleri in having a median groove behind the eyes and a median groove extending the entire length of the pronotum.