Paralaophonte Lang 1948

Gómez, Samuel & Nazari, Fatemeh, 2021, A new species of Paralaophonte Lang 1948 (Harpacticoida: Laophontidae), with notes on the phylogeny of the genus and its relationships with Loureirophonte Jakobi 1953 using Bayesian inference, Zootaxa 5032 (2), pp. 195-215 : 198

Genus Paralaophonte Lang 1948

Syn.: Paralaophonte Lang 1948 , Loureirophonte Jakobi 1953

Type species. Cleta brevirostris Claus 1863 (= Paralaophonte (Paralaophonte) brevirostris ( Claus 1863) , by subsequent designation).

Other species. See other species in the subgenera below.

Updated diagnosis. Laophontidae . Body fusiform. Cephalothorax with small semicircular extension in posterolateral corner, and with crescentic mid-ventrolateral extension. Female antennule six- or seven-segmented; male antennule subchirocer or chirocer; second antennulary segment with or without outgrowth, the latter either a spinous process or a small blunt conical protuberance when present. Antenna with allobasis; exopod one-segmented with four setae. Mandibular palp one-segmented (basis, exopod and endopod fused) or uniramous (basis and endopod distinct; exopod fused to basis). Maxilla with three syncoxal endites. Maxilliped subchelate; syncoxa with one to three setae, never unarmed; relative position of the maxilliped ventral or lateral (the latter only in Pa. (Pa.) harpagone ). P1 EXP two- or three-segmented; P1 ENP two-segmented, first segment elongate, without armature, longer than second segment, the latter with strong claw and small slender seta; P2–P4 EXP three-segmented; P2 and P3 ENP two-segmented, P4 ENP one-segmented (Pa. ( Loureirophonte )) or two-segmented (Pa. ( Paralaophonte )); P5 EXP and baseoendopod separated, P5 EXP truncated (in most species of Pa. ( Paralaophonte )) or oblique (in some species of Pa. ( Paralaophonte ), and in all species of Pa. ( Loureirophonte )), outer basal seta arising from well-developed setophore. Armature formula of P1–P5 as follows:

Genital and third urosomites fused in female forming genital double-somite. Caudal rami cylindrical or lamelliform (the latter in Pa. (Pa.) aenigmaticum and Pa. (Pa.) asellopsiformis ): with seven setae; caudal setae IV and V whip-like or spiniform (the latter in Pa. (Pa.) aenigmaticum ).

Sexual dimorphism expressed in the antennule, P2 ENP2 (subdistal inner seta of ENP2 thickened, with lamellar outgrowths in distal third), P3 EXP (segments and armature stronger than in the female), P5, and P6; the P3 ENP is three-segmented with apophysis on ENP 2 in most species of Pa. ( Paralaophonte ), but this ramus is not sexually dimorphic in some species of Pa. ( Paralaophonte ) and in all species of Pa. ( Loureirophonte )).