Lampropidae Sars, 1878

Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 10-11

Lampropidae Sars, 1878

Platyaspidae Sars, 1899: 26 .— Calman 1909:188.

Platysympodidae Stebbing, 1912 : 133,143.

Hemilampropidae Stebbing, 1912 : 133,143.

Paralampropidae Stebbing, 1912 : 133,143.

Pseudodiastylidae Stebbing, 1912 : 133,143.

Chalarostylidae Stebbing, 1913: 55 .

Mesolampropidae Given, 1964: 287 .

Archaeocumatidae Băcescu, 1972: 241–245 .

Type genus. Lamprops Sars, 1863 .

Diagnosis. Antennule flagella well developed, accessory flagellum rarely minute. Antenna of 4 articles in female, flagellum with short articles in male. Mandible navicular or rarely truncate. Branchial apparatus with narrow gill plates. Female with natatory exopods on maxilliped 3 and pereopod 1, exopod may be natatory, rudimentary or absent on pereopod 2, exopod rudimentary or absent on pereopods 3–4. Male with natatory exopods on maxilliped 3–pereopod 4. Female without pleopods or rarely 1 or 2 pairs of rudimentary pleopods. Male with 0– 3 pairs of pleopods, if present, with process on inner ramus. Male with or without penial lobes. Uropod endopod with 2 or 3 articles. Telson articulate, without pre-anal/ post-anal division, with 3 or more terminal setae.

Genera. Alamprops n. gen., Platytyphlops n. gen., Aplatysympus n. gen., Archaeocuma Băcescu, 1972 , Austrolamprops n. gen., Bathylamprops Zimmer, 1908 , Brachylamprops n. gen., Chalarostylis Norman, 1879 , Doieolamprops n. gen., Farragolamprops n. gen., Hemilamprops Sars, 1883 , Lamprops Sars, 1863 , Mesolamprops Given, 1964 , Misceolamprops Corbera, 2006 , Murilamprops Reyss, 1978b , Paralamprops Sars, 1887 , Paraplatysympus n. gen., Phallolamprops n. gen., Phallolampropoides n. gen., Platysympus Stebbing, 1912 , Pseudodiastylis Calman, 1905 , Pseudolamprops Gamô, 1989 , Quasiparalamprops n. gen., Reyssia n. gen., Stenotyphlops Stebbing, 1912 , Watlingia Gerken, 2010 .

Remarks. At the time of the initial description of Archaeocuma , no other cumaceans were known with penial lobes in the male or pleopods in the female, so Băcescu (1972) considered these characters so unusual that despite the obvious affinities with the Lampropidae (flattened carapace, 3 terminal setae on the telson, large telson), a new family was proposed for the genus. However, species in the Lampropidae , Nannastacidae , and Leuconidae have now been described with penial lobes ( Campylaspenis , Chalarostylis , Eudorellopsis , Phallolamprops , Phallolampropoides , Phalloleucon , Watlingia ), and in this work two new lampropid genera are described with pleopods in the female ( Pseudoarchaeocuma , Doieolamprops ). Therefore, it is now clear that the presence of penial lobes in the male and pleopods in the female are not unique characters (although the combination is unique), and Archaeocuma is a member of the Lampropidae .

The family diagnosis. in Jones (1963) includes “Telson present, of medium or large size, with 3 or more end spines, rarely with 1.” The genus Pseudodiastylis has three terminal setae, although the central seta is much larger and longer than the others. It seems that Jones interpreted this setal arrangement as a single terminal seta, whereas I interpret it as similar to other lampropids in which the terminal setae are unequal in size, and a central seta may be longer or shorter than the others.