Aeger insignis Oppel, 1862

Odin, Giliane P., Charbonnier, Sylvain, Devillez, Julien & Schweigert, Günter, 2019, On unreported historical specimens of marine arthropods from the Solnhofen and Nusplingen Lithographic Limestones (Late Jurassic, Germany) housed at the Muséum national d’Histoire naturelle, Paris, Geodiversitas 41 (17), pp. 643-662 : 647

Aeger insignis Oppel, 1862 ( Fig. 1E, F )

DIAGNOSIS (from Schweigert et al. 2016). — Short rostrum, with one ventral tooth distally; Mxp3 extremely long, with movable spines; chelate P1-P3; P2 with spiny chelae; P3 with spiny elements and chelae; achelate P4-P5; uropodal exopod with rounded diaresis. STUDIED MATERIAL. — Charbonnier & Garassino (2012) did not mention this species.We add one specimen from Solnhofen, MNHN. GG.2004/57291 (formerly identified as A. tipularius ).

COMMENT

Our assignation is based on the elongate rostrum bearing one median ventral tooth, particularly visible in UV light ( Fig. 1F ).

Figures

FIG. 1. — A-C, Aeger tipularius (Schlotheim,1822),specimen MNHN.F.A33509 from Solnhofen;A, natural light;B, interpretation of the carapace grooves;C, UV light; D, Aeger spinipes (Desmarest, 1817), specimen MNHN.F.B13442 from Solnhofen; E, F, Aeger insignis Oppel, 1862, specimen MNHN.GG.2004/57291 from Solnhofen; E, natural light; F, UV light. Scale bars: A, C, 1 cm; B, D, 2 cm; E, 3 cm. Abbreviations: a, branchiocardiac groove; b, antennal groove; b1, hepatic groove; e1e, cervical groove. Photographs: L. Cazes. Line drawing: G.P. Odin.