Paralamprops Sars, 1887

Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 102

Paralamprops Sars, 1887

Paralamprops Sars, 1887: 26 .

Type species. Paralamprops serratocostatus Sars, 1887 , by monotypy.

Diagnosis. Carapace dorsoventrally flattened, marginal carina present, eyelobe present, pseudorostral lobes short, blunt. Antennule flagella well developed, accessory flagellum at least 0.5 length of main flagellum. Mandible navicular. Maxillule palp absent. Pereopod 1 slender. Pereopod 5 shorter than basis of pereopod 4. Telson at least 2/3 length of uropod peduncles. Uropod endopod of 3 articles. Uropod exopod article 1 0.2 length of article 2, or less. Female with fully developed exopod on pereopod 2, rudimentary exopods on pereopods 3–4, without pleopods. Male with antenna extending past pereon, without penial lobes, with 3 pairs of pleopods.

Species. Paralamprops caudodentatus Corbera, 2006 , P. margidens Day, 1978 , P. poorei Gerken, 2009 , P. serratocostatus Sars, 1887 .

Remarks. Sars (1887) defined the genus Paralamprops by the combination of the flattened carapace and the lack of a maxillule palp, noting that the lack of the palp was extremely unusual. Some subsequent authors ignored this character, and added species to the genus with a flattened carapace that also possess a normal maxillule palp with 2 setae. There are some species in which the state of the palp is not known. A flattened carapace is a character shared with several other genera, and is almost certainly associated with the water content and grain size of the sediments on which the organisms live. Therefore, I am defining Paralamprops as without the maxillule palp, sensu Sars , and removing species that possess a maxillule palp, and those in which the state of the maxillule palp is unknown, to the genus Platytyphlops . Species in which the palp state is unknown are removed to Platytyphlops , because the basal state of the palp is to be present with 2 setae.