Key to the European genera of Ripidiinae 1 Wings and elytra developed, body wedge-shaped, eyes holoptical, antennae partially flabellate (males)................................................................................................................. 2 – Wings and elytra absent, body larviform, eyes small, placed antero-laterally on the head, antennae simple (females)............................................................................................... 3 2 Antennae 11-segmented with eight distal antennomeres uniflabellate, postocular ommatidia present, pronotum trapezoid, flat, maxillary palpi reduced to bifurcate stylus..................................................................................................................... Ripidius Thunberg, 1806 – Antennae 10-segmented with seven distal antennomeres uniflabellate, postocular ommatidia absent, pronotum anteriorly above the neck narrower and elevated, maxillary palpi reduced to knob-like tubercle................................................. Blattivorus Chobaut, 1891 3 Antennae 11-segmented, tarsomeres with full heteromerous pattern (tarsal formula 5-5- 4)................................................................................................ Ripidius Thunberg, 1806 – Antennae 3-segmented, number of tarsomeres reduced in all legs (tarsal formula 1-1-1)................................................................................................... Blattivorus Chobaut, 1891

Published as part of Batelka, Jan, 2009, Confirmation of the synonymy of Rhyzostylops with Blattivorus and the description of the male of Blattivorus inquirendus (Coleoptera: Ripiphoridae: Ripidiinae), pp. 247-251 in Acta Entomologica Musei Nationalis Pragae 49 (1) on page 250, DOI: 10.5281/zenodo.5404442