Paederus riparius, from here.

Belongs within: Staphylinidae.

Paederus is a diverse genus of staphylinid beetles, generally coloured in contrasting patterns of red and black.

Characters (from Fagel 1961): Pronotum and prosternum not separate; weak prosternal extension; abdomen thick; pleurites well marked; sternite 1 with strong longitudinal carina; median lobe of aedeagus with ventral and dorsal lamella, median opening, parameres generally symmetrical, fused to median lobe over large part of their length and carrying numerous rows of bristles which do not reach the apex.

<==Paederus Fabricius 1775 [incl. Neopaederus Blackwelder 1939, Paederomorphus Gautier des Cottes 1862] F61
    |--P. angusticeps F61
    |--P. caffer Boheman 1848 F61
    |--P. fastuosus F61
    |--P. fuscipes Curtis 1823 (see below for synonymy) F61
    |--P. impressipennis F61
    |--P. longipennis G89
    |--P. nigripes Bernhauer 1932 F61
    |--P. nigrolineatus F61
    |--P. obliteratus N90
    |--P. riparius (Linnaeus 1758) B14
    |--P. rudebecki Fagel 1961 F61
    `--P. termitophilus Wasmann 1911 S57

Paederus fuscipes Curtis 1823 [incl. P. abyssinicus Cam. 1950, P. aestuans Erichson 1839-1840, P. alfierii Koch 1934, P. angolensis Er. 1843, P. erichsoni Wollaston 1867, P. mayumbeanus Cameron 1939] F61

*Type species of generic name indicated


[B14] Bouchard, P. (ed.) 2014. The Book of Beetles: A lifesize guide to six hundred of nature's gems. Ivy Press: Lewes (United Kingdom).

[F61] Fagel, G. 1961. Coleoptera (Staphylinidae): Paederinae. In: Hanström, B., P. Brinck & G. Rudebeck. South African Animal Life: Results of the Lund University Expedition in 1950–1951 vol. 8 pp. 259–295. Almqvist & Wiksell: Uppsala.

[G89] Gestro, R. 1889. Viaggio ab Assab nel Mar Rosso dei signori G. Doria ed O. Beccari con il R. Avviso «Esploratore» dal 16 Novembre 1879 al 26 Febbraio 1880.—IV. Coleotteri. Annali del Museo Civico di Storia Naturale di Genova, Serie 2a 7: 5–72.

[N90] Newton, A. F., Jr. 1990. Insecta: Coleoptera Staphylinidae adults and larvae. In: Dindal, D. L. (ed.) Soil Biology Guide pp. 1137–1174. John Wiley & Sones: New York.

[S57] Seevers, C. H. 1957. A monograph on the termitophilous Staphylinidae (Coleoptera). Fieldiana Zoology 40: 1–334.

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