Albian cockroaches (Insecta, Blattida) from French amber of Archingeay Author Vršanský, Peter text Geodiversitas 2009 2009-03-31 31 1 73 98 http://www.bioone.org/doi/abs/10.5252/g2009n1a7 journal article 10.5252/g2009n1a7 1638-9395 5380613 Leptolythica vincenti n. sp. ( Figs 5 ; 13 ) TYPE MATERIAL . — Holotype specimen ARC-260.2, a complete immature. TYPE LOCALITY . — Archingeay-Les Nouillers, Charente- Maritime, SW France . STRATIGRAPHIC HORIZON. — Lower Cretaceous, uppermost Albian, lithological subunit A1sl2 sensu Néraudeau et al. (2002) . FIG. 5. — An immature of Leptolythica vincenti n. gen., n. sp. ( Liberiblattinidae ), holotype ARC-260.2, ventral view of complete specimen. Head width 1.14 mm. ETYMOLOGY. — After my colleague and friend Vincent Perrichot. DESCRIPTION Head globular, 1.14 mm wide, eyes globular, comparatively small. Clypeus distinct (0.46/ 0.16 mm ). Antenna very short, with only 37 segments, each with 1 (basal)-3 (apical segments) rows of 2-4 comparatively short sensilla chaetica . Scape 0.29 mm , pedicel 0.16 mm long. Third antennal segment the longest ( 0.31 mm ), fourth the shortest ( 0.05 mm ). All segments (except scape 0.15 mm at apex) very wide ( 0.1 mm ). Labial palp slender, long (0.31/ 0.07 mm ), with dense sensilla chaetica , very dense at apex (10 apical sensilla chaetica on dorsal side). Maxillary palp transparent, with distinct articulation, first segment short (0.22/ 0.09 mm ), second distinct (0.73/ 0.35 mm ), third reduced to some extent (0.55/ 0.35 mm ), the apical one very large (1.00/ 0.42 mm ), with sparse sensilla chaetica . Fore femur robust, short (0.85/ 0.29 mm ) with two rows of 17 and 9 spurs along longitudinal posterior ridge, with large terminal spine. Tibia very short and robust (0.57/ 0.14 mm ), strongly carinated, but with few sensilla chaetica . Tarsus robust, basitarsus (0.25/ 0.09 mm ) with at least 5 apical sensilla chaetica and a longitudinal ridge, second (0.11/ 0.07 mm ) and third (0.10/ 0.07 mm ) segments without sensilla chaetica . Mid coxa comparatively short ( 0.48 mm ), trochanter very distinct ( 0.33 mm ), femur (1.21/ 0.4 mm ) with two longitudinal central ridges, posterior margin with 8, anterior with 4 sensilla chaetica of diverse length. Mid tibia very long (1.61/ 0.22 mm ), strongly carinated.