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Taxonomic review of the Genus Metapocyrtus Heller (Coleoptera: Curculionidae: Entiminae) – YAP & GAPUD, 2007

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Sample pages showing images of the paper.

Sample pages showing images of the paper.

The last time that the genus Metapocyrtus has been treated seriously was in the 1925 paper of Schultze: A monograph of the pachyrrhynchid group of the Brachyderinae, Curculionidae: Part 1, The genera Apocyrtidius Heller and Metapocyrtus Heller published in the Philippine Journal of Science [26 (2):131-309]. Yap and Gapud’s 2007 paper follows this up with an updated systematic study.

From the paper’s abstract:

The subgeneric concepts within the genus Metapocyrtus Heller were evaluated by reexamining the characters previously used to distinguish them, using representative species, together with illustrations and photographs of rostral characters and habitus. A key to the subgenera of Metapocyrtus, as well as subgeneric diagnoses and descriptions for each subgenus are provided.

Of the 9 subgenera of Metapocyrtus, Homalocyrtus is proposed to be raised to genus level, while Proapocyrtus is proposed to be reinstated as a valid genus.

Compared with Schultze’s work where not so detailed illustrations were presented, the two authors showed interesting detailed photographs of the rostrum, the single identifying characteristic that separates the different subgenera and genera.

I hope that with this paper, further study will be done on this interesting but understudied genus.

Note: Sheryl Yap is a University Extension Specialist of the Museum of Natural History at the University of the Philippines Los Baños College.

Victor Gapud is a professor at the Crop Protection Cluster of the University of the Philippines Los Baños College.