Lauridromia dehaani (Rathbun, 1923)

Guinot, Danièle & Quenette, Gwenaël, 2005, The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications, Zoosystema 27 (2), pp. 267-342 : 291-292

Lauridromia dehaani (Rathbun, 1923)

– Female 52 mm length, Madagascar, A. Crosnier coll. (MNHN-B 6868).

As in L. intermedia , female sternal sutures 7/8 are long, straight, roughly parallel and remain lateral; apertures of the spermathecae end apart, each at the summit of a strong tubercle, just behind the P1. The bulb of the spermatheca is tapering and is prolonged by the basal thickening; in the posterior corner a raised part forms a flat area; a small prominence is visible anteriorly. The chamber has a membranous, transluscent inner wall; it contains a sperm mass in the anterior part. The basal thickening is well marked and well calified on its whole length. The long tube ( Fig. 14 ) gets thicker at the level where it changes direction and it ends in a terminal, raised tubercle before the external opening.

– Male 72 mm length, Madagasdar, FAO 26 coll. (MNHN-B 6923).

The phragma 7/8 has practically the same development as in the female, but the two sheets are adjacent and calcified (there is no convexity of the inner wall); there is no basal thickening, and the tube is absent.

Figures

FIG. 14. — Lauridromia dehaani (Rathbun, 1923), female 52 mm length, Madagascar (MNHN-B 6868), spermatheca in lateral view, skeletal parts removed. Abbreviations: a, location of the spermathecal aperture on sternum; b, bulb; b.t., basal thickening; c, spermathecal chamber; s8, internal surface of sternite 8; t, spermathecal tube. Scale bar: 1 mm.