FIGURE 69. Jassa staudei Conlan, 1990 in Jassa (Crustacea: Amphipoda): a new morphological and molecular assessment of the genus

FIGURE 69. Jassa staudei Conlan, 1990. Variation in thumb length relative to body length in males living inside the east pressure head tank at Friday Harbor Laboratories, San Juan Island, Washington, 2 October 1984, C. Staude, coll., IZ1984- 175 (CMN). Arrows refer to the associated gnathopod illustrations. The subadult male had a thumb visible inside the cuticle, indicating that it would molt next into a thumbed adult. Setae omitted except for those around the thumb and spines in order to landmark position changes with growth. All views lateral. Scale 0.1 mm. Linear regression assumptions failed for all plots. Illustration after Conlan (1990).