Acartia ( Acanthacartia ) cagayanensis, Sakaguchi & Ueda, 2020

Sakaguchi, Sakiko Orui & Ueda, Hiroshi, 2020, A new species closely related to Acartia sinjiensis (Copepoda: Calanoida), from river estuaries of northern Luzon, the Philippines, Zootaxa 4881 (3), pp. 532-544 : 534

Acartia ( Acanthacartia) cagayanensis sp. nov.

( Figs. 1–3 )

Material examined. Female holotype (NSMT-Cr 28389) and male allotype (NSMT-Cr 28390) collected from the mouth of the Cagayan River on February 2, 2009 . Paratypes: 2 females and 2 males were collected from the mouth of the Cagayan River on February 2, 2009 (NSMT-Cr 28391– 28394) and 10 female specimens were collected from the river on February 16, 2010 (NSMT-Cr 28395). Furthermore, 46 females and 2 males were collected from the mouth of the Pata River on February 15, 2010 .

Figures

FIGURE 1. Acartia cagayanensis sp. nov. female (A–F, H, holotype; G, paratype from the Cagayan River). A, habitus, dorsal; B, habitus, right lateral; C, rostrum, ventral; D, fifth pediger and urosome, dorsal; E, urosome, left lateral; F, right antennule, ventral; G, right antenna; H, right mandible.

FIGURE 2. Acartia cagayanensis sp. nov. female (A–G, I, holotype; H, paratype from the Cagayan River). A, left maxillule; B, left maxilla; C, right maxilliped; D–H, legs 1–5, posterior; I, right leg 5, right lateral.

FIGURE 3. Acartia cagayanensis sp. nov. male (A–C, allotype; D–G, paratype from the Cagayan River). A, habitus, dorsal; B, fifth pediger and urosome, dorsal; C, fifth pediger and urosome, right lateral; D, first and second urosomites, right lateral; E, left antennule, dorsal; F, right antennule, dorsal; G, leg 5, posterior.