Acritozosime, Kim & Lee, 2021

Genus Acritozosime gen. nov.

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Type species

Acritozosime spinesco gen. et sp. nov., by monotypy.

Diagnosis

Body subcylindrical, with distinct constriction between prosome and urosome. Penultimate somite with weak pseudoperculum. Rostrum undefined at base, with 1 pair of long sensilla distally. Caudal rami short, slightly longer than wide; principal seta V very long, about 4/5 of body length. Antennule robust, 7-segmented, with ae on second and distal segment, respectively. Antennary exopod 3-segmented; setal armature, from proximal: 2.0.4; distal endopodal segment with lateral armature comprising 3 stout elements and distal armature composed of 7 elements. Mandibular palp well-developed, with 2 setae on basis; exopod 1-segmented, with 4 setae; endopod 1-segmented, with 4 distal setae and 1 lateral seta. Maxillular coxa without epipodite; exopod 1-segmented, with 2 setae; endopod 1-segmented, with 5 setae. Maxillary syncoxa with 3 endites; endopod 2-segmented. Maxilliped stenopodial, forming right angle between syncoxa and basis; syncoxa with 2 setae; basis gradually extended toward distal end, with 1 seta; endopod small, 1-segmented, with 4 setae. P1 with 2-segmented exopod and endopod; enp-1 without inner seta. P2–P4 with 3-segmented exopod and 2-segmented endopod; exp-3 with 2 outer spines; P2–P3 enp-1 without inner seta. Female P5 exopod and baseoendopod separate; exopod with 3 marginal setae. P6 represented by 1 long and 2 small setae. Male unknown.

Etymology

The generic name is a combination of the Greek ‘ akritos ’ meaning ‘confused’ or ‘mixed’ and the name of the type genus Zosime . It refers to several morphological features intermediate between the families Idyanthidae and Zosimeidae .