dcsimg

Comprehensive Description

provided by Smithsonian Contributions to Zoology
Stenothoe allinga

DESCRIPTION OF FEMALE.—Lateral cephalic lobe strongly projecting, submammilliform, but subtruncate apically, anteroventral corner of head with rugose projection; prebuccal mass bulky, protuberant, epistomal and labral portions not distinct, epistomal part forming linguiform piece projecting forward from upper midcephalic keel, latter weakly conical, apically rounded; mediodistal part of article 1 on antenna 1 not strongly extended; accessory flagellum barrel-shaped, bearing one long seta and one small oval aesthetasc; lobes of upper lip long, subequally projecting, with middle gape; inner plate of maxilla 1 evenly ovate, lacking seta, palp with about seven or eight marginal spines extending mediobasally halfway or more, apicolateral margin of palp not beveled, article 1 tumid; inner plate of maxilla 2 subfalciform, bearing about three medial setae and pair of apical setal spines, outer plate thin and elongate, slightly curved inward, setal spines short; inner plates of maxilliped long, subrectangular, bearing 2–4 apical setae, outer plate of ordinary size, article bearing outer plate with several ventrolateral setae; coxae 1–4 of ordinary dimensions, ventral margin of coxa 4 convex; article 5 of gnathopod 1 with narrow but tumid posterior lobe, hand long, palm subtransverse, dactyl with one or two outer marginal setae at mark 50, inner margin lacking tooth, anteromedial margin of hand with several groups of one or two setae each, no transverse set; gnathopod 2 ordinary, article 4 with blunt posterodistal corner, palm oblique but well marked by shape from posterior margin, dactyl lacking tooth and bearing weak outer seta near mark 60; pereopods 1–2 not grossly distinct from each other, pair of locking spines on all pereopods distinct from nearby marginal spines, apically blunt, dactyl with membranous and recumbent distal setule; article 2 of pereopods 4–5 equally broad, anterolateral facial ridge crowded toward anterior margin; peduncle of uropod 1 with crowded cluster of apicolateral spines, no distoventral tooth, rami equal to each other in extension, both spinose, outer with about four spines, inner with about two spines, peduncle of uropod 2 with pair of apicolateral spines, rami extending equally, outer with two spines, inner with none or one; peduncle of uropod 3 with one dorsomarginal spine, one apical spine, article 1 of ramus with pair of dorsodistal spines; telson long and slender, with three spines basolaterally on each side, no setules; epimera 1–3 each with small blunt posteroventral tooth, epimeron 1 with ventromarginal row of setules.

MALE.—Unknown.

HOLOTYPE.—WAM, 128–71, ovigerous female, 3.8 mm.

TYPE-LOCALITY.—JLB Australia 11, Middleton Beach, Albany, Western Australia, intertidal, wash of algae and rocks, 30 September 1968.

DISTRIBUTION.—Middleton Beach, Albany, Western Australia, intertidal.
license
cc-by-nc-sa-3.0
bibliographic citation
Barnard, J. L. 1974. "Gammaridean Amphipoda of Australia, Part II." Smithsonian Contributions to Zoology. 1-148. https://doi.org/10.5479/si.00810282.103