Paracerapus Budnikova

Lowry, J. K. & Berents, Penelope B., 1996, The Ericthonius group, a new perpective on an old problem (Crustacea: Amphipoda: Corophioidea), Records of the Australian Museum 48 (1), pp. 75-109 : 85

Paracerapus Budnikova

Paracerapus Budnikova, 1989: 54 .

Diagnosis. Antenna 1: peduncular article 1 with anterior and posterior margins parallel; without accessory flagellum. Mandibles: left and right incisor, lacinia mobilis, accessory setal row and intermediate setae unknown; mandibular palp elongate, slender. Maxilla 1: outer plate, setal-teeth unknown. Gnathopod 2: carpochelate in male, subchelate in female. Peraeopods 3 to 7: dactyli 3 to 5 directed posteriorly, dactyli 6 to 7 directed anteriorly. Peraeopod 4: merus short, expanded posteriorly. Peraeopbd 5: coxa, female/ male size ratios unknown, without fringe of long setae; dactylus with large unguis, small accessory spines apparently absent. Peraeopod 6: dactylus with large unguis, small accessory spines apparently absent. Peraeopod 7: dactylus with large unguis, small accessory spines apparently absent. Pleopod 2: biramous, inner ramus not reduced. Pleopod 3: biramous, inner ramus not reduced. Uropod 2: possibly biramous, inner ramus vestigial. Uropod 3 with one vestigial ramus bearing small recurved spines.

Type species. Cerapus polutovi Gurjanova, 1951 .

Species composition. Paracerapus currently contains 2 species: Paracerapus comparativus (Kudrjashov, 1975) and P. polutovi ( Gurjanova, 1951) .

剾浡牫献 In Paracerapus the dactyli on peraeopods 6 and 7 remain orientated anteriorly, a primitive condition. This, in addition to no accessory spines on the dactyli and an enlarged coxa 2, are the main differences which separate Paracerapus from its sister taxon Cerapus and other genera in the group.