Phallolamprops, Gerken, 2018

Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 113

Phallolamprops n. gen.

Type species. Phallolamprops pribilofensis n. sp.

Diagnosis. Carapace not dorsoventrally flattened, marginal carina absent, eyelobe present, pseudorostral lobes short, blunt. Antennule flagella short, accessory flagellum 0.5 length of main flagellum. Mandible navicular. Maxillule palp with 2 setae. Pereopod 1 slender. Pereopod 5 longer than pereopod 4 basis. Telson long, at least 2/3 length of uropod peduncles. Uropod endopod of 3 articles. Uropod exopod article 1 at least 0.5 length of article 2. Female with fully developed exopod on pereopod 2, rudimentary exopods on pereopods 3–4, without pleopods. Male with long antenna, extending to end of pleon, with penial lobes, without pleopods, with ventral elaboration of pleonites 1–2.

Species. Phallolamprops californiensis n. sp., Phallolamprops pribilofensis n. sp.

Etymology. The genus name is Phallolamprops from the combination of the similar genus Lamprops and phallus, in reference to the penial lobes. Gender masculine.

Remarks. This genus is quite similar to Phallolampropoides , but can be differentiated by the long antenna and the ventral elaboration on pleonites 1–2 in the adult male. If only females are present, the genus can be differentiated from Hemilamprops by pereopod 1, and from Lamprops by article 1 of the uropod exopod. In Hemilamprops , pereopod 1 has the basis shorter than the rest of the articles together, while in the new genus pereopod 1 has the basis longer than all other articles together. In Lamprops , article 1 of the uropod exopod is usually less than 0.5 the length of article 2, while in the new genus, article 1 of the uropod exopod is much greater than 0.5 the length of article 2. Unfortunately, without adult males, there is no way to differentiate between the Phallolamprops and Phallolampropoides , except by differentiating among the different species.