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Expachyrhynchus gen. nov. is established in the tribe Pachyrhynchini of the subfamily Entiminae for two new species from Palawan Island, the Philippines: E. chloromaculatus sp. nov., the type species,... and E. granulatus sp. nov. This new genus is similar in general appearance to the genus Pachyrhynchus Germar, but differs from it mainly by having the uneven prothorax with irregularly convex interstices between strong punctures and the elytra with weakly arched dorsal contour and more or less granulate intervals. Illustrations of diagnostic characteristics of the genus are provided. Expachyrhynchus chloromaculatus possesses a deep subobtriangular rostral concavity and the weakly granulate elytral intervals, whereas in E. granulatus the rostral concavity is much shallower and the elytral intervals are more strongly granulate. A key to the species is provided, in addition to a diagnosis, habitus photographs, and illustrations of male genitalia and female terminalia for each species.show more
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