Pseudohaliotrematoides rohdei Gupta and Sharma, 1982

Kritsky, Delane C., Galli, Paolo & Tingbao, Yang, 2007, Dactylogyrids (Monogenoidea) parasitizing the gills of spinefoots (Teleostei, Siganidae): revision of Tetrancistrum Goto and Kikuchi, 1917, with descriptions of two new species from Siganus spp. of the Red Sea and Celebes, Journal of Natural History 41 (25 - 28), pp. 1513-1551 : 1547

Pseudohaliotrematoides rohdei Gupta and Sharma, 1982

The type specimens of this species have not survived (N. Agrawal, personal communication). The original description and illustration of this species are generalized and inadequate for definite generic placement of the species. Although Gupta and Sharma (1982) indicated that the gonads are tandem (germarium pretesticular) in the description of P. rohdei , their whole-body illustration (ventral view) (Plate 5, Figure 1 ) shows the testis lying to the right side of the germarium. Should the dorsoventral axis of the body have been erroneously determined by these authors (a not uncommon occurrence) and the fact that the species was described from a siganid, Siganus oramin (now S. canaliculatus ), supports the possibility that this species belongs in Glyphidohaptor (see Kritsky et al. 2007). Because of the inadequate description provided by Gupta and Sharma (1982), however, the formal transfer of the species to this genus is not made in order to avoid possible unnecessary synonymy; P. rohdei is considered a species inquirenda.

Figures

Figures 1–7. Tetrancistrum sigani Goto and Kikuchi, 1917 from the mottled spinefoot, Siganus fuscescens, Great Barrier Reef, Australia. (1) Whole mount (composite, ventral view). (2) Copulatory complex (ventral view, slightly compressed). (3) Copulatory complex (ventral view). (4) Ventral bar. (5) Dorsal bar. (6) Ventral anchor. (7) Dorsal anchor. Scale bar: 400 Mm (1); 30 Mm (2–7).