Anathelges foliosus

Boyko, Christopher B. & Williams, Jason D., 2023, Nomenclatural and taxonomic changes in parasitic isopods (Isopoda: Epicaridea) including two new families and note on the questionable association between monogeneans and bopyrids, Zootaxa 5258 (3), pp. 251-269 : 252

Anathelges foliosus (Kröyer in Gaimard, [1842]) n. comb.

( Fig 1 )

= Bopyrus foliosus Kr ̂yer in Gaimard, [1842]

= Stegophrixus (sic) thompsoni Nierstrasz & Brender à Brandis, 1931 n. syn.

Distribution: Valparaíso, Chile (Nierstrasz & Brender à Brandis 1931).

Hosts: “ Pagurus ” sp. (Nierstrasz & Brender à Brandis 1931).

Remarks: There was never a text description published for Bopyrus foliosus and the availability of the name is from Kr̂yer’s plate 29, fig. 2, although the dating of this and the other plates in the volume is contentious (see note under Kr̂yer in Gaimard [1842] in References). As far as can be determined, this species has only been cited in the literature one time subsequent to its introduction as a brief mention by Spence Bate & Westwood (1867). The type specimens (ZMUC CRU-006445) are, unfortunately, missing from the ZMUC collection.

A comparison of the figures of Kr̂yer in Gaimard ([1842]) ( Fig. 1A–D herein) with those of Nierstrasz & Brender à Brandis (1931: figs. 87–89) ( Fig. 1E, F herein) shows that Bopyrus foliosus is identical with Stegophrixus (sic) thompsoni Nierstrasz & Brender à Brandis, 1931 (currently Anathelges thompsoni (Nierstrasz & Brender à Brandis, 1931)); the type material of S. thompsoni was examined by Boyko & Williams (2003). Nierstrasz & Brender à Brandis (1931) based their description of S. thompsoni on a pair of Kr̂yer specimens from Valparaíso, Chile, which may be the same specimens that Kr̂yer used as the basis for the figures of B. foliosus , although there are some slight differences that make this not completely certain. As Stegophrixus (sic) thompsoni / Stegophryxus thompsoni / Anathelges thompsoni has only been mentioned in the literature a few times subsequent to the original description ( Markham 1974b; Boyko & Williams 2003; Markham 2003; Diaz & Roccatagliata 2006; EspinosaPérez & Hendrickx 2006; Pardo et al. 2009; McDermott et al. 2010) and new material of this species has never been reported, there is no issue in recognizing B. foliosus as the senior synonym of Stegophiyxus (sic) thompsoni Nierstrasz & Brender à Brandis, 1931, making Anathelges foliosus (Kr̂yer in Gaimard, [1842]) n. comb. the valid name for the species.

Figures

FIGURE 1. Bopyrus foliosus Kr̂yer in Gaimard, [1842]. A, female, ventral view. B, female, dorsal view. C, male, dorsal view. D, pereopod (presumed from male). Stegophrixus [sic] thompsoni Nierstrasz & Brender à Brandis, 1931. E, female, dorsal view (oostegites not drawn). F, male, dorsal view. Figures not to scale. A–D from Kr̂yer in Gaimard [1842]; E, F from Nierstrasz & Brender à Brandis (1931).