Uronyctidae, Lowry & Myers, 2012

Lowry, J. K. & Myers, A. A., 2012, New, mainly southern hemisphere, freshwater families of Amphipoda (Crustacea), together with a description of the first freshwater calliopiid, Lutriwita bradburyi gen. nov. et sp. nov., Zootaxa 3499, pp. 27-45 : 39

Uronyctidae fam. nov.

Type genus. Uronyctus Stock & Iliffe, 1990 .

Included genera. Uronyctus Stock & Iliffe, 1990 .

Diagnostic description. Eyes absent. Calceoli absent. Antenna 1 longer than antenna 2; peduncular article 1 shorter than article 2; accessory flagellum short. Antenna 2 peduncular article 1 bulbous. Mandible incisor dentate. Labium without inner plates. Maxilla 1 inner plate strongly setose along medial margin; palps alike. Maxilla 2 inner plate with oblique setal row. Maxilliped inner plate well developed; outer plate small. Body subcylindrical. Coxal gills present on coxae 2 to 7, stalked, with proximal suture. Sternal gills present, simple. Gnathopods 1 and 2 sexually dimorphic. Gnathopod 1 smaller than gnathopod 2; propodus with multiple row of simple or bifid robust setae along palmar margin. Pereopod 4 without posteroventral lobe. Pereopods 5–7: pereopod 5 shorter, pereopods 6 and 7 similar length; dactyli subterminal setae absent. Pereopod 5 coxa with small anteroventral lobe; basis slightly expanded. Urosomites 1 to 3 free, without robust dorsal setae. Urosomite 1 with distoventral robust seta. Urosomite 2 with paired dorsal setae. Uropod 1 peduncle without basofacial robust seta; without ventromedial spine. Uropod 3 uniramous; rami not sexually dimorphic; without fringing plumose setae; inner ramus absent; outer ramus 2-articulate, article 2 very long. Telson moderately cleft, with robust setae.

Remarks. See remarks under Giniphargidae .

Distribution. Temperate Australia.