Ampithoe ulladulla Peart 2007, sp. nov.
Creators: name: Peart, Rachael A.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Ampithoidae
Ampithoe
Ampithoe ulladulla

description: Ampithoe ulladulla sp. nov.   
(Figs 70–73)  
 Type material. Holotype: AM P61898, male, 8 mm, S end of lighthouse, Ulladulla, NSW, 35°22.14’S 150°29.31’E, 30 Apr 1997, 17 m, on brown algae, A. Murray. Paratypes: AM P61899, 1 female, 8 mm, type locality; AM P61900, 12 specimens, type locality.   
 Other material examined. AM P61901, 6 specimens, Merimbula Wharf, Merimbula, NSW, 36°53.92’S 149°55.64’E, 18 May 1995, 8 m, on red and brown algae, K. B. Attwood; AM P61902, 6 specimens, SE of wharf, Merimbula Point, Merimbula, NSW, 36°54.06’S 149°55.79’E, 15 May 1995, 13– 14 m, on branching brown algae, P. B. Berents & K. B. Attwood.   
 Diagnosis. Antenna 2 robust, better developed than antenna 1, with short, dense setae on ventral margin. Lower lip with lateral lobe longer than medial lobe. Maxilla 1 inner plate with two slender setae. Gnathopod 1 carpal lobe subacute; carpus shorter than propodus; palm entire, with midmedial tooth, with posterodistal tooth defining palm; dactylus subequal in length to palm. Gnathopod 2 with long setae on margins, not plumose; basis posterodistal lobe large and rounded, with more than 3 slender setae; carpus shorter than propodus; palm transverse, entire, without midmedial tooth, with small subacute posterodistal tooth defining palm, with 1 defining robust seta; dactylus subequal in length to palm. Pereopod 3 basis expanded; merus narrow. Pereopods 5–7 simple. Pereopod 5 merus subrectangular. Uropod 3 peduncle with 10 distal robust setae, outer ramus subequal to inner ramus, with patch of small conical lateral denticles, without lateral setal fringe; inner ramus with 5 distal robust setae. Telson distally subacute, apical cusps small.   
 Description. Based on holotype, male, 8 mm, AM P61898. Head as long as deep. Antenna 1 longer than antenna 2; peduncular article 1 longer than article 2 (1.38 x), article 2 longer than article 3 (3.2 x), article 3 shorter than article 1 (0.23 x); primary flagellum with 37 articles. Antenna 2 peduncular article 4 longer than article 5; flagellum 23 articulate. Mandible molar with 5 or 6 robust setae in the accessory setal row; palp stout, long, setose along posterior margin, article 1 shorter than article 2 (0.52 x), article 2 subequal to article 3 (1.09 x), article 3 longer than article 1 (1.77 x). Lower lip mandibular lobe with curved margins, rounded apically. Maxilla 1 palp with apical robust setae. Maxilla 2 inner plate narrow, outer plate broader. Maxilliped outer plate with developed setation (robust setae large).   
 Pereon. Gnathopod 1 without densely setose margins; coxa larger than gnathopod 2 coxa, produced distoventrally, distoventral margin rounded, anterior margin concave, ventral margin with a row of small setules along ventral margin; basis shorter than coxa, with sparse (sometimes plumose) slender setae, posterodistal lobe small and rounded, 2 or 3 slender setae; merus produced to form a small, subacute distoventral lobe, anterior margin without setae; carpus longer than merus, subtriangular, anterior margin with slender setae only; propodus narrow (length 1.67 x width), ovoid; palm with 1 defining robust seta; dactylus inner margin denticulate. Gnathopod 2 coxa ventral margin with a row of small setules along ventral margin; basis shorter than coxa, with fringe of long, slender, plumose setae; merus produced to form a short, subacute distoventral lobe, anterior margin with setae absent; carpus longer than merus, subtriangular, anterior margin with slender setae only; propodus broad (length 1.02 x width), subtriangular, not produced into an anterodistally setose lobe; dactylus tapering evenly, acute, inner margin denticulate. Pereopod 5 basis with marginal robust setae, with medial slender setae; distal articles slender; propodus not expanded distally, subrectangular, with 3 distal simple striated robust setae; dactylus strongly curved. Pereopod 6 basis posterior margin rounded, with marginal robust setae, with medial slender setae; merus subrectangular; propodus not expanded distally, with 3 distal simple striated robust setae; dactylus strongly curved. Pereopod 7 basis without marginal robust setae, with medial slender setae; propodus defined distally by 3–5 simple robust setae.   
 Pleon. Epimeron 3 posteroventral corner subquadrate. Uropod 1 peduncle with more than 5 robust setae, with a short setal fringe; inner ramus slightly longer than outer ramus, with 3–5 marginal robust setae, slender setae absent; outer ramus with more than 5 marginal robust setae, slender setae absent. Uropod 2 peduncle with 3–5 robust setae, setal fringe absent; inner ramus slightly longer than outer ramus, with more than 5 marginal robust setae, slender setae absent; outer ramus with 3–5 marginal robust setae, slender setae absent. Uropod 3 peduncle longer than broad (1.27 x width), long with respect to the rami length (2 x), marginal robust setae absent, marginal slender setae absent, with more than 5 distal slender setae; inner ramus with 3–5 distal slender setae. Telson with apical and lateral slender setae.   
 Female. (sexually dimorphic characters). Based on paratype, female, 8 mm, AM P61899. Antenna 1 primary flagellum 33-articulate. Antenna 2 robust and better developed than antenna 1, with sparse setae on ventral margin; flagellum incomplete with 17–20 articles. Gnathopod 1 subequal in size to gnathopod 2; basis posterodistal lobe with more than 3 slender setae; palm without midmedial tooth, with posterodistal tooth defining the palm. Gnathopod 2 without densely setose margins; merus produced to form a small, rounded distoventral lobe; propodus ovoid; palm acute.   
 Etymology. The name for this species is derived from the type locality, Ulladulla; used as a noun in apposition.   
 Remarks. Ampithoe ulladulla sp. nov. is most similar to A. ningaloo sp. nov.; distinguishing features are outlined under the account of the latter.   
 Habitat. Brown algae at depths of 8–17 m.   
 Distribution. Ulladulla, New South Wales, Australia.
description: Published as part of Peart, Rachael A., 2007, A review of the Australian species of Ampithoe Leach, 1814 (Crustacea: Amphipoda: Ampithoidae) with descriptions of seventeen new species, pp. 1-95 in Zootaxa 1566 (1) on pages 87-92, DOI: 10.11646/zootaxa.1566.1.1, http://zenodo.org/record/5096061