Abstract

Japanese species of the genus Psammoecus Latreille, 1829 are taxonomically revised. Four new species, P. scitus sp. n. (misidentified with P. quadrimaculatus), P. labyrinthicus sp. n., P. boreas sp. n. and P. omotoensis sp. n. are described. Psammoecus bipunctatus (Fabricius, 1792), P. trimaculatus Motschulsky, 1858 (misidentified with P. triguttatus), P. simoni Grouvelle, 1892, P. fasciatus Reitter, 1874 and P. triguttatus are redescribed. Another described species whose distribution in Japan is questionable. P. quadrimaculatus is also redescribed. Lectotype and paralectotype of P. fasciatus and P. triguttatus are designated.

Highlights

  • The family Silvanidae Kirby 1837 (Coleoptera, Cucujoidea) includes two subfamilies and about 58 genera, approximately 500 species (Thomas and Leschen 2010) and is found around the world: 39 species have been recorded from Japan

  • The Silvanidae are considered to be fairly primitive among the Cucujoidea (Thomas 2002)

  • This species is distinguished from other Japanese Psammoecus species by the black elytra with yellow maculae and the posterior teeth on lateral margins of pronotum longer than those of anterior margins

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Summary

Introduction

The family Silvanidae Kirby 1837 (Coleoptera, Cucujoidea) includes two subfamilies and about 58 genera, approximately 500 species (Thomas and Leschen 2010) and is found around the world: 39 species have been recorded from Japan. Pubescence composed of many short setae, and long setae on teeth on lateral margins and anterior and posterior angles. The rows of punctures on the elytra of P. trimaculatus (Fig. 5E) are comparatively narrower than in these two closely similar species.

Results
Conclusion

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