ABSTRACT
A new genus of xyleborine ambrosia beetle, Melanesicus Beaver Petrov gen. n., with type species Xyleborus partitus Browne (1974) is described from the Melanesian region. The following new combinations are proposed: M. caledoniae (Beaver Liu, 2016) comb. n., M. deformatus (Browne, 1974) comb. n., M. granulosus (Schedl, 1975) comb. n., all from Xyleborus Eichhoff, 1864. Melanesicus tishechkini Petrov sp. n. is described from Vanuatu, and Melanesicus nukuruanus sp. n. Beaver from Fiji. The taxonomy, distribution and biology of the species included are briefly reviewed.
Subject(s)
Coleoptera , Weevils , Ambrosia , Animals , MelanesiaABSTRACT
The four species currently placed in the genus Immanus Hulcr and Cognato are reviewed. Immanus papuanus Beaver, Sittichaya Liu sp. n. is described. The following new synonymy is proposed: Immanus desectus (Eggers, 1923) (= Xyleborus insignis Browne, 1984 syn. n.). The following new combinations are proposed: Immanus pseudocolossus (Schedl, 1942) comb. n., I. sarawakensis (Eggers, 1923) comb. n., I. trolaki (Schedl, 1939) comb. n., all originally described in Xyleborus. A key to the females of the eight species now included in the genus is provided. The taxonomy, diagnostic characters, distribution and biology of the species are briefly discussed.
Subject(s)
Coleoptera , Weevils , Animals , Biology , FemaleABSTRACT
The present state of knowledge of the scolytine ambrosia beetles of Thailand is summarised to provide a basis for future studies of the fauna and its economic importance in forestry, timber production and crop tree plantations. A checklist of the fauna is provided with information on local and world distribution, host trees, biology and taxonomy. Six faunal elements based on geographical distribution, and the host tree and altitudinal preferences of species are discussed. One hundred and sixty-one species are recorded from Thailand, 67 of them for the first time. The following new synonym is proposed: Euwallacea wallacei (Blandford) (= Xyleborus barbatomorphus Schedl n.syn.). The following new combinations are given: Ambrosiophilus cristatulus (Schedl), Ambrosiophilus latisulcatus (Eggers), Beaverium dihingensis (Eggers), Beaverium lantanae (Eggers) and Immanus desectus (Eggers) are transferred from their present position in Ambrosiodmus; Ancipitis depressus (Eggers) and Ancipitis punctatissimus (Eichhoff) are transferred from Leptoxyleborus; Cyclorhipidion armipenne (Schedl), Cyclorhipidion inarmatum (Eggers), Euwallacea semiermis (Schedl), Fortiborus macropterus (Schedl), Microperus nudibrevis (Schedl) and Wallacellus minutus (Blandford) are transferred from Xyleborus.
