Archinotodelphys momus, Kim & Boxshall, 2020

Kim, Il-Hoi & Boxshall, Geoff A., 2020, A revision of the family Archinotodelphyidae Lang, 1949 (Copepoda: Cyclopoida Oithonida), with the recognition of 15 new species, Zootaxa 4801 (1), pp. 1-56 : 8

Archinotodelphys momus sp. nov.

Synonym: Archinotodelphys polynesiensis Monniot, 1986 (partim)

Differential diagnosis. Characters as for A. polynesiensis except as follows: antenna with same setation but segments shorter and broader than in A. polynesiensis . Mandibular palp with 8 setae on second endopodal segment (cf. 9 setae in A. polynesiensis ). Endopod of maxillule with 11 setae (cf. 12 setae in A. polynesiensis , according to Monniot (1986)). Setation of free endopodal segments of maxilla 1, 1, 4 (cf. 2, 1, 4 in A. polynesiensis ). Maxilliped with endopodal segments fused and bearing total of 7 setae (cf. segments 1 and 2 separate and bearing total of 6 setae in A. polynesiensis ). Leg 4 with inner coxal seta (cf. absent in A. polynesiensis ). Leg 5 with 6 setae on exopodal segment.

Remarks. There are additional small scale differences, for example, in the relative lengths of the 6 setae carried on the free exopodal segment of leg 5, and in the caudal setae. The fusion of the endopodal segments of the maxilliped and the differences in setation highlighted by Monniot (1986) and listed above, provide sufficient evidence to justify the establishment of the new species based on material from Herdmania momus , the type host. The holotype is the female specimen collected from H. momus described and figured by Monniot (1986).