Late Neogene Lophophaenidae (Nassellaria, Radiolaria) from the eastern equatorial Pacific Author Trubovitz, Sarah Author Renaudie, Johan Author Lazarus, David Author Noble, Paula text Zootaxa 2022 2022-07-04 5160 1 1 158 http://dx.doi.org/10.11646/zootaxa.5160.1.1 journal article 10.11646/zootaxa.5160.1.1 1175­5334 A9179C79-EE43-44E4-8723-919505500049 Amphiplecta sp. cf. A. kikimorae Plate 2, Figs. 6A – 7B . Amphiplecta acrostoma ?, Renz, 1974 , pl. 18, fig. 12. Unknown plagonid group C sp 73, Trubovitz et al., 2020 , supplementary data 7. Remarks. This species resembles Amphiplecta kikimorae n. sp. (Pl. 2, Figs. 1A – 5B ) except that it has significantly larger pores, is overall larger in size, has a more widely flared thorax, and a less pronounced apical horn. However, it does have a cephalis of similar shape, and the same prominent AL and AD arches. It differs from Amphiplecta acrostoma Haeckel (Pl. 1, Figs. 1A – 2 ) and A. cylindrocephala Dumitrica in that the cephalis is closed at the top. A specimen similar to ours was figured by Renz (1974) and identified as Amphiplecta acrostoma ? , but the poor image quality makes it difficult to discern the pore size of Renz’s specimen, and say with certainty it is conspecific with ours. However, we believe Amphiplecta sp. cf. A. kikimorae does not match any Amphiplecta species so far described, and could be justified as a new species after more specimens can be documented. Material Examined. 2 specimens from samples 321-1337A-7H- 6, 104–107cm (Early Pliocene) and 321- 1337D-1H-1, 0–3cm (Recent). Range. Early Pliocene—Recent in the EEP ( Table 1 ). The specimen figured by Renz (1974) was listed as Quaternary in age.