Pumiliophotis queenslandicus, Myers, Alan A., 2009

Myers, Alan A., 2009, Corophiidae *, Zootaxa 2260 (1), pp. 373-379 : 376-378

Pumiliophotis queenslandicus sp. nov.

( Figs 3 , 4 )

Type material. Holotype, male, 1.5 mm, AM P70888, Watsons Bay , Lizard Island (14 o 39’56”S 145 o 27’03”E), sand and rubble from patch reef, hand collected on snorkel, 2 m, S.E. LeCroy, R. A. King, K.N. Klebba & T. Krapp-Schickel, 25 February 2005 (QLD 1653) . Paratype: female, 1.5 mm, same data as holotype, AM P70888 (QLD 1653) .

Additional material examined. 1 badly damaged specimen, AM P70770 (QLD 1653)

Type locality. Watsons Bay , Lizard Island, Queensland, Australia .

Etymology. Named after the type locality.

Description. Based on male, holotype 1.5 mm AM P70888.

Head. Head lateral cephalic lobes triangular, sub-acute. Eye small, composed of less than 10 ommatidia. Antenna 1 short, about half body length; flagellum with 6 articles; accessory flagellum absent. Antenna 2

subequal in length with antenna 1; flagellum with 4 articles. Gnathopod 1 carpus posterior margin weakly setiferous; propodus simple. Mandible palp article 3 a little longer than 2, slender with distal setae only.

Pereon. Gnathopod 1 simple; coxa enlarged, distally expanded; carpus and propodus subequal. Gnathopod 2 basis enlarged, anterior margin with flange; merus not enlarged, with few short setae only; propodus much less than twice as long as broad, with posterodistal spine and palmar excavation. Pereopods 5–7 basis greatly expanded, with large, convex posterior flange, with few simple setae.

Pleon. Urosomites 1–3 free. Uropod 1 peduncle elongate, much longer than rami, without distoventral spine; rami margins without setae, but with a single terminal robust seta. Uropod 2 inner ramus shorter than peduncle; outer ramus a little shorter than inner ramus. Uropod 3 uniramous; peduncle with distal expansion.

Female (sexually dimorphic characters). Based on paratype, female, 1.5 mm, AM P70888. Gnathopod 2 simple, similar to gnathopod 1, but carpus shorter .

Habitat. Sand and rubble.

Remarks. The simple gnathopod 1 of both sexes and simple gnathopod 2 of the female, distinguish this species from all species in the genera Cheiriphotis Walker, 1904 , and Microphotis Ruffo, 1952 . It also differs from Photis Krøyer, 1842 and Microprotopus Norman, 1867 , in having coxa 1 smaller than coxa 2 and the uropod 3 peduncle not expanded distally.

Distribution. Australia. Queensland: Watsons Bay, Lizard Island (current study).

Figures

FIGURE 3. Pumiliophotis queenslandicus sp. nov., holotype, male, 1.5 mm, AM P70888, Watsons Bay, Lizard Island, Great barrier Reef.

FIGURE 4. Pumiliophotis queenslandicus sp. nov., holotype, male, 1.5 mm, female 1.5 mm, AM P70888, Watsons Bay, Lizard Island, Great barrier Reef.