49. Potamida

[ Potamida] Meigen, 1800: 22.

CURRENT STATUS: Unavailable name; work suppressed for the purposes of zoological nomenclature by action of I.C.Z.N. (1963: 339 [Opinion 678]); treated under Clitellaria Meigen, 1803 [teste Woodley (2001: 155)].

Potamida Hendel, 1903: 58 .

ORIGINALLY INCLUDED SPECIES: None.

FIRST INCLUDED SPECIES: Stratiomys ephippium Fabricius, 1775 (with Ephippium thoracicum Latreille, 1805 [as “ Ephippium thoracicum Panz. ”] in synonymy) (in Speiser 1905: 406).

TYPE SPECIES: Stratiomys ephippium Fabricius, 1775, by subsequent designation (Speiser 1905: 406).

CURRENT STATUS: Preoccupied by Potamida Agassiz, 1846; junior synonym of Clitellaria Meigen, 1803 . New Synonymy.

FAMILY: STRATIOMYIDAE .

REMARKS: Potamida was originally proposed by Meigen (1800: 22) without included species and later made unavailable by the suppression of the entire work for the purposes of zoological nomenclature by action of the I.C.Z.N. (1963: 339 [Opinion 678]). Hendel (1903: 58) treated Potamida as a synonym of Clitellaria Meigen, 1803, thereby proposing Potamida in synonymy, but he did not include any species. Speiser (1905: 406) was the first after Meigen (1800) to treat Potamida as valid, which makes the name available from Hendel (1903). Speiser (1905: 406) also included the first species, Stratiomys ephippium Fabricius, 1775, designating it as the type species, which is thus the type species by subsequent designation. Stratiomys ephippium Fabricius, 1775 is currently treated in Clitellaria Meigen, 1803 [teste Woodley (2001: 155)], which makes Potamida Hendel, 1903 a junior synonym of Clitellaria Meigen, 1803, n. syn. Melville (1960: 35) gave the “counterpart” for Potamida as Chippium Latreille, 1802 . Melville also indicated that Latreille (1804: 341) emended Chippium to Ephippium . Chippium is a lapsus and the correction in a subsequent volume of the same series by Latreille [in this case Latreille (1804)] is allowed by the ICZN Code as a correction of an original spelling and Ephippium is to be considered the available name [see also Woodley (2001: 156)]. Melville’s (1960) placing Chippium [= Ephippium] as a “counterpart” of Potamida is technically correct as it is a synonym of and an older name than Clitellaria Meigen, 1802, but Ephippium Latreille, 1802 is preoccupied by Ephippium Röding, 1798 . Thus Clitellaria Meigen, 1803 is the oldest available name for this genus, and we treat it here as the seniormost synonym of Potamida Hendel, 1903 .