Penaeus (Altiopeneaus), 2023

Chan, Tin-Yam, 2023, New subgeneric names for the most commercially important shrimp genus Penaeus Fabricius, 1798 (Crustacea, Decapoda, Penaeidae), ZooKeys 1141, pp. 29-40 : 29

publication ID	https://dx.doi.org/10.3897/zookeys.1141.97349
publication LSID	lsid:zoobank.org:pub:5E821334-8E05-4736-9D58-CE27C132C80C
persistent identifier	https://treatment.plazi.org/id/594460D1-98BB-4C4B-9902-068EB4E1DEBA
taxon LSID	lsid:zoobank.org:act:594460D1-98BB-4C4B-9902-068EB4E1DEBA
treatment provided by	ZooKeys by Pensoft (2023-01-18 14:03:40, last updated 2024-11-27 21:23:28)
scientific name	Penaeus (Altiopeneaus)
status	subgen. nov.

Treatment

Penaeus (Altiopeneaus) subgen. nov.

Type species.

Penaeus marginatus Randall, 1840.

Gender of subgenus.

Masculine.

Diagnosis.

Rostrum usually armed with 2 ventral teeth. Postrostral carina lacking median sulcus. Adrostral sulcus as wide as postrostal carina, extending to near posterior margin of carapace. Gastrofrontal carina distinct, with posterior end turning anterodorsally. Cervical carina with dorsal end a distance from dorsal carapace. Hepatic carina distinct. First pereiopod with strong ischial spine. Fifth pereiopod bearing exopod. Sixth abdominal somite completely lacking dorsolateral sulcus. Telson with 3 pairs of lateral spines. Thelycum closed.

Etymology.

The name Altiopeneaus (from the Latin altio for deeper) alluding to members of this subgenus which have a deeper vertical (depth) distribution than other Penaeus .

Species included.

Penaeus (Altiopeneaus) marginatus Randall, 1840

Remarks.

This taxon corresponds to "gen. nov. 5" in the 11-genus scheme of fig. 3 in Yang et al. (2023). This subgenus is unusual in the genus in inhabiting deeper waters (see Chan 1998). It is also unique amongst the “grooved” species by completely lacking a median sulcus on the postrostral carina.

References

Chan, TY, 1998. Shrimps and prawns. In: Carpenter, KE, Niem, VH, Eds., FAO Species Identification Guide for Fishery Purposes. The Living Marine Resources of the Western Central Pacific. Food and Agriculture Organization of the United Nations, Rome: 851 - 971

Yang, CH, Ma, KY, Chu, KH, Chan, TY, 2023. Making sense of the taxonomy of the most commercially important shrimps Penaeus Fabricius, 1798 s. l. (Crustacea: Decapoda: Penaeidae), a way forward. Aquaculture (Amsterdam, Netherlands) 563: 1 - 10, DOI: https://doi.org/10.1016/j.aquaculture.2022.738955