Pilosanthura fresii (Wägele 1980)

Malacanthura cantabrica

MATERIAL.—Holotype: USNM 185003, Sta WHOI Allen 44, 1 non-ovig. , 11.0 mm. Paratypes: USNM 185004, Sta WHOI Allen 44, 1 non-ovig. , 7.9 mm, 2 manca, 6.5 mm; ZMC, Sta WHOI Allen 44, 1 non-ovig. , 8.9 mm.

DESCRIPTION.—Non-ovigerous Female: Integument moderately indurate, lacking pits. Body proportions: C < 1 < 2 = 3 < 4 < 5 > 6 > 7. Cephalon with low triangular rostrum; eyes lacking. Pereonites 4–6 each with large circular middorsal pit. Pleonites 1–5 fused, fused segments indicated laterally by short epimera, and shallow grooves over dorsum; pleonite 6 free, with middorsal slit in posterior margin. Telson with pair of proximal statocysts, with barely discernible rounded middorsal ridge; distal margin evenly rounded.

Basal antennular peduncle segment equal in length to these distal segments; flagellum of two articles, terminal article very short. Antennal flagellum of five articles, first article equal in length to four distal articles together. Terminal segment of 3-segmented mandibular palp shorter than segment 1, with three distal fringed spines; incisor of three cusps; lamina dentata with six serrations; molar bluntly rounded. Maxilla with eight distal spines. Maxilliped 5-segmented, terminal segment semicircular, with five setae; very reduced endite bearing single setae. Pereopod 1 unguis about one-sixth length of dactylus; propodus expanded, palm straight, with five short simple setae. Pereopods 2–4 ambulatory, propodi not expanded, with fringed sensory spine posterodistally, and numerous fine setules on posterior margin; carpi triangular, with posterodistal fringed spine. Pereopods 4–7 dactyli with fringed scales on anterior and posterior margins; propodi with fringed scales and posterodistal sensory spine on posterior margin; carpi rectangular, with anterior margin only slightly shorter than posterior. Pleopod 1 exopod operculiform, endopod less than half greatest width and about three-quarters length of exopod. Uropodal exopod oval, distally rounded, reaching slightly beyond basis, margin setose; endopod oval in outline, distally rounded, extending slightly beyond telsonic apex; basis with mediodistal corner acute, slightly produced.

112-1739