Paradexamine windarra J. L. Barnard 1972

Paradexamine windarra

DESCRIPTION (of female). — Lateral cephalic lobe rounded, protruding, head with distinct anteroventral definition, rostrum short, blunt; article 1 of antenna 1 with 1 middle spine, several apical setae on quadrate projection, article 2 about 1.5 times as long as article 1, apically simple but proximoventrally with strong spinose notch, flagellum about 1.3 times as long as peduncle; flagellum of antenna 2 about 9-articulate, elongate; mandibles with large spines, 2 right, 3 left, molar heavily triturative, ragged setae on both sides, ordinary setae both sides (removed in Figure 78Ml), accessory bulges sharp; outer lobe of lower lip with 3 medium-sized cones, 1 hidden behind inner lobe, mandibular lobes medium thick, straight; palp of maxilla 1 thin, shortened, reaching only 75 percent along outer plate, apex with 2 setae and no apparent cone, inner plate large and naked; outer plate of maxilla 2 scarcely broader than inner, inner reaching less than 60 percent along outer; inner plate of maxilliped short, broad, truncate, bearing 2 small apical spines, outer plate with weakly serrate spines, apex of palp article 4 scarcely reaching apex of outer plate, article 4 elongate; coxa 1 weakly tapering distally, setose along anterior margin, coxa 2 apically rounded, bearing large medial spine, spinule, and setule, coxae 1-4 weakly serrate and moderately setose ventrally, coxa 3 not strongly prolonged, coxae 5-6 ventrally spinose; gnathopod 1 with article 6 about 1.35 times as long as 5, on gnathopod 2 about the same, gnathopods of medium size, palms nearly transverse, dactyls fitting palms, medial faces of hands with 5 small setae in oblique row, setae sparsely plumose, anterior faces with 2 rows of setae, dactyls unserrate except for main tooth, palms regularly and minutely serrate in tight pattern; pereopods 1-5 of regular stoutness, with numerous blunt spines, pereopods 1-3 with tendency toward expanded, almost prehensile sixth articles, ratio of articles 4-7 on pereopods 1-2 about 15:17:20:14; article 2 of pereopod 3 long, narrow, with slightly sharpened posterior lobe; article 2 of pereopod 4 broadly pyriform, lobe obsolete, posterior margin sparsely setose; article 2 of pereopod 5 quadropyriform, posterior margin serrate, posteroventral area with large lobe bearing several long spines, article 5 elongate, ratio of articles 4-7 about 15:35:20:15; pleonal epimera 1-2 with lateral ridge and thin medium-sized posteroventral tooth, epimeron 3 also with thicker tooth, posterior margins very weakly serrate or essentially unserrate on epimeron 1, epimera 2-3 each with 2-4 weak ventral spinules, epimeron 1 with long seta and about 4 setules; pereonite 7 with or without dorsal tooth but occasionally with lateral tooth present without dorsal tooth; pleonites 1-4 each with 3 sharp teeth, lateral teeth forming subdorsal ridges, pleonite 4 with 1 spine on subdorsal ridge and pleonites 5-6 (fused) with 2 dorsolateral spines on each side; dorsal margin of peduncle on uropod 1 with long naked gap between proximal 2 spines and distal spine; rami of uropod 3 spinose and setose; apices of telsonic lobes of medium breadth, each bearing main notch and small spine, with 3 sharp medial teeth and 1 large, 1 small lateral tooth, lateral margin of each lobe with 6 small spines; cuticle of posterior body segments finely spiculate. Male unknown.

HOLOTYPE. — WAM, female, 3.95 mm.

TYPE-LOCALITY. — Slack-Smith 1, Cheyne Beach, east of Albany, Western Australia, intertidal, on weedy rocks, 4 December 1968.