Andaniexis elinae, Jørgen Berge, 2003

Jørgen Berge, 2003, Stegocephalidae (Crustacea: Amphipoda) from Australia and New Zealand, With Descriptions of Eight New Species, Records of the Australian Museum 55, pp. 85-112 : 90-93

Andaniexis elinae n.sp.

Figs. 4, 5

Type material. HOLOTYPE: MV J40614 , ♀ 5 mm, 42°2.20'S 148°38.70'E, 800 m, off Freycinet Peninsula , Tasmania, Australia, 27 Jul. 1986. Collector: M.F. Gomon and party . PARATYPE: MV J24061 , immature 3 mm, 42°2.20'S 148°38.70'E, 800 m, off Freycinet Peninsula , Tasmania, Australia, 27 Jul. 1986. Collector: M.F. Gomon and party .

Additional material. MV J24051 , 4 specimens, 34°57.90'S 150°20.20'E, 503 m, New South Wales, off Nowra , 14 Jul. 1986 ; MV J24055 , 4 specimens, 38°25.00'S 149°0.00'E, 1500 m, Victoria, south of Point Hicks , 22 Jul. 1986 ; MV J24058 , 7 specimens, 38°19.60'S 149°24.30'E, 930 m, Victoria, south of Point Hicks , 23 Jul. 1986 ; MV J24064 , 5 specimens, 41°57.50'S 148°37.90'E, 400 m, Tasmania, off Freycinet Peninsula , 27 Jul. 1986 ; MV J40617 , 1 specimen, 38°25.90'S 148°58.60'E, 1850 m, Victoria, south of Point Hicks , 22 Jul. 1986 ; MV J40619 , 20 specimens, 38°21.90'S 149°20.00'E, 1000 m, Victoria, south of Point Hicks , 23 Jul. 1986 ; MV J40622 , 2 specimens, 38°16.40'S 149°27.60'E, 800 m, Victoria, south of Point Hicks , 23 Jun. 1986 .

Distribution. New South Wales, Victoria and Tasmania, 400–1850 m.

Diagnosis (see also Table 1). Pleonites dorsally smooth. Antenna 1 flagellum with 5 articles, accessory flagellum not longer than flagellum article 1. Antenna 2 peduncle article 4 shorter than article 5. Epistome produced laterally, epistomal plate present. Labrum shorter than broad, both lobes reduced. Mandibular incisor smooth, transverse. Lacinia mobilis reduced, not expanded laterally. Maxilla articulate. Maxilliped inner plate with one nodular seta. Coxa 4 distally broad. Pereopod 6 basis expanded. Articulation present between urosomites 2 and 3. Uropod 3 outer ramus 2-articulate. Telson about as long as broad, apically pointed, entire.

Description. Rostrum reduced, inconspicuous. Antenna 1 about as long as antenna 2; accessory flagellum article 2 absent. Antenna 2 peduncle articles 3–5 shorter than flagellum; article 3 short, about as long as broad. Epistome rectangular, with a long ridge on each side; epistomal plate produced into a small elongate medial ridge covering the entire epistome. Maxilla 1 palp reaching above the apex of outer plate; outer plate distally rounded; ST first row with 6 setae (ST1–5, ST7); ST 6 absent; gap between ST 5 and ST 7 present; ST A present, part of second row; ST B present; ST C present; inner plate with pappose setae. Maxilla 2 ordinary; outer plate setae distally simple; inner plate setae row A covering the entire margin; clearly separated from row B; row A setae pappose; row B setae proximally pappose; distally with cusps present; row C present; row D present, reduced, 1–3 long slender setae distally. Maxilliped palp 4-articulate; article 2 distally unproduced; dactylus distally simple, pointed; inner plate not exceeding base of palp article 2; medial setae-row transverse with simple setae; distal setae-row present; inner setae-row not reduced; outer plate with outer setae-row submarginal with long robust setae; inner setae-row well developed with long robust setae, row appressed to outer setae-row; distal setae-group absent. Labium distally broad, oval. Coxae and bases on the pereopods smooth. Coxae 1–3 contiguous. Pereopod 1 coxa not as deep as basis; propodus subovate. Pereopod 2 longer and thinner than pereopod 1; ischium elongate, ratio length to breadth exceeding 1.5, distal posterior margin with plumose setae; propodus subrectangular, palm absent. Pereopod 4 basis anterior and posterior margins with long setae, with plumose setae on distal anterior and posterior margins; ischium with plumose setae on posterior distal margin. Pereopod 6 basis about twice as broad as basis on pereopod 5. Pereopod 7 basis anterior margin straight, distally rounded; medial row of setae present, setae short and robust. Oostegites on pereopod 2–5, gills on pereopods 2–7.

Uropods: Uropod 1 peduncle longer than rami; outer ramus longer than inner. Uropod 2 peduncle longer than rami; outer ramus longer than inner. Uropod 3 peduncle at least as long as rami; outer ramus longer than inner. Telson shorter than peduncle uropod 3; submarginal setae on apex present.

Male. Unknown.

Etymology. Named after the first author’s sister Astrid Eline Berge.

Remarks. For differences between the world’s species of Andaniexis , see Table 1.