Peramphithoe bungareei, Hughes, Lauren E. & Peart, Rachael A., 2013

Hughes, Lauren E. & Peart, Rachael A., 2013, New species and new records of Ampithoidae (Peracarida: Amphipoda) from Australian Waters, Zootaxa 3719 (1), pp. 1-102: 95-96

publication ID

http://dx.doi.org/10.11646/zootaxa.3719.1.1

publication LSID

lsid:zoobank.org:pub:1F275DB9-0D3B-4322-9F21-A402F1384D8C

persistent identifier

http://treatment.plazi.org/id/E574A473-FFCD-7E11-7BC4-875DFC35FC18

treatment provided by

Plazi

scientific name

Peramphithoe bungareei
status

sp. nov.

Peramphithoe bungareei   sp. nov.

( Figs. 62 View FIGURE 62 , 63 View FIGURE 63 )

Type material. Holotype male, 11.1 mm, dissected, 4 slides, AM P. 90120, north of Lion Island, Broken Bay, New South Wales, Australia (33 ° 33 ’S 151 ° 19 ’E), depth unknown, 30 March 1972, coll. Australian Museum Marine Ecology Department (station 2); paratypes 6 specimens, AM P. 77125, north of Lion Island, Broken Bay (33 ° 33 ’S 151 ° 19 ’E), depth unknown, 30 March 1972, coll. Australian Museum Marine Ecology Department (station 2).

Type locality. North of Lion Island, Broken Bay, New South Wales, Australia (33 ° 33 ’S 151 ° 19 ’E).

Etymology. Named for Bungaree, an outstanding elder from Broken Bay, who was the first indigenous person to circum-navigate Australia.

Diagnosis. Mandible accessory setal row with 9 robust setae. Maxilla 1 outer plate palp slender, article 2 with 4 robust setae. Gnathopod 1 coxa subequal to coxa 2, anterior margin straight, anteroventral corner rounded; propodus long, subrectangular, length 3 times width, palm transverse, straight, defined by subquadrate corner, without robust setae, palm length 0.15 times posterior margin; dactylus overreaching palm, apically acute, tapering evenly, inner margin crenate. Gnathopod 2 scarpus compressed, cup-shaped, length subequal to width; propodus subrectangular, length 2 times width, palm acute, distally concave, without palm defining corner or robust setae, palm length undefined along posterior margin; dactylus extending to 0.5 times propodus posterior margin. Telson apically rounded, 2 pairs of lateral setae and 1 pair of apical setae.

Description of holotype. Head. Antenna 1 similar to Antenna 2; article 1 length 1.1 times article 2; article 2 length 0.3 times article 3; article 3 length 4 times article 1; primary flagellum incomplete, 28 articles; accessory flagellum absent. Antenna 2 article 4 subequal to article 5; flagellum 17 articles.Mandible accessory setal row with 9 robust setae; palp 3 -articulate, article 2 without slender setae; article 3 length twice width. Maxilla 1 inner plate with 1 slender seta, outer plate palp slender, article 2 with 4 robust setae.

Pereon. Coxae 1–4 longer than broad. Gnathopod 1 smaller than gnathopod 2; coxa 1 subequal to coxa 2, anterior margin straight, anteroventral corner rounded; basis subequal in length to coxa, posterior margin with a few sparse slender setae, anterodistal corner subquadrate; ischium anterior margin without lobe; merus anterodistal corner acutely produced; carpus subtriangular, length 2.1 times width, 0.9 times propodus length; propodus long, subrectangular, length 3 times width, palm transverse, straight, defined by subquadrate corner, without robust setae, palm length 0.15 times posterior margin; dactylus overreaching palm, apically acute, tapering evenly, inner margin crenate. Gnathopod 2 sexually dimorphic; basis subequal in length to coxa, anterodistal corner with weak lobe, with 1 slender seta; ischium and merus anterior margin without lobe; carpus compressed, cup-shaped, length subequal to width, 0.3 times propodus length; propodus subrectangular, length 2 times width, palm acute, distally concave, without palm defining corner or robust setae, palm length undefined along posterior margin; dactylus reaching along half-length of propodus posterior margin, apically subacute, tapering evenly, inner margin smooth.

Pleon. Epimera 1–2 subquadrate, posterior margin straight, posterodistal corner with small acute tooth. Epimeron 3 subquadrate, posterior margin convex, posterodistal corner with small acute tooth. Uropod 1 long, reaching past uropod 2 rami; peduncle length 2.8 times width, with 11 robust setae, with large, acute distoventral spine; inner ramus 0.8 times peduncle length, longer than outer ramus, without marginal setae; outer ramus broad with 8 marginal robust setae. Uropod 2 peduncle with small subacute distoventral spine, with 5 robust setae; inner ramus shorter than outer ramus, 7 marginal robust setae; outer ramus with 10 marginal robust setae. Uropod 3 peduncle length 1.8 times width, 2.2 times rami length, without marginal robust setae, with 6 distal peduncular robust setae, 7 distal slender setae; inner ramus length subequal to width, with 1 distal robust seta, 11 distal slender setae and 2 lateral robust setae; outer ramus shorter than inner ramus, with 2 large recurved distal robust setae, patch of small lateral denticles and lateral setal fringe. Telson subtrapezoidal, apically rounded, with small apical cusps, 2 pairs of lateral setae, 2 pairs of lateral plumose setae and 1 pair of apical setae.

Remarks. The gnathopod 1 propodus transverse palm, the mandible with palp and uropod 1 with anterodistal spine place this species in Peramphithoe   . The acute gnathopod 2 propodus palm is also typical of species within this genus. Peramphithoe bungareei   sp. nov. has the male gnathopod 2 dactylus extending slightly past half the length of the propodus, similar to P. orientalis (Dana, 1853)   and another Australian species, P. parmerong (Poore & Lowry, 1997)   . Peramphithoe bungareei   sp. nov. differs from P. orientalis   and P. parmerong   in the gnathopod 2 propodus palm with shallow sinus, uropod 1 inner ramus without medial robust setae and the uropod 2 peduncle with short anterodistal spine.

Distribution. Australia. New South Wales: Broken Bay (current study).