Pennella robusta Gnanamuthu, 1957

Hogans, W. E., 2017, Review of Pennella Oken, 1816 (Copepoda: Pennellidae) with a description of Pennella benzi sp. nov., a parasite of Escolar, Lepidocybium flavobrunneum (Pisces) in the northwest Atlantic Ocean, Zootaxa 4244 (1), pp. 1-38 : 30-31

Pennella robusta Gnanamuthu, 1957

( Fig. 17 )

Synonyms. None.

Type host and locality. Paraexocoetus brachypteris ; Indian Ocean. Morphology. Size: 55 mm. Papillae: partial coverage, spherical, clavate and branching tubiform, random arrangement. Holdfasts: two only, short. First antenna with three segments, second with three segments. Plumes: simple, single or double.

Remarks. Species inquirendae. An intermediate sized species of Pennella described from a flyingfish,, based on a single specimen. Hogans (1988a) considered P. robusta as species inquirendae based on a lack of type material, although the original description and figures do portray the species. The cephalothoracic papillae (tubiform and spherical and configured in an elongate field- Figure 17 b), of P. robusta are different than those found in any other species of Pennella and much different from other species also found on flyingfish. Egg strings were present on the specimen originally described. Not reported since the original record.

Figures

FIGURE 17. Pennella robusta, a. entire parasite; b. cephalothorax, ventral; c. cephalothorax, dorsal; d. appendage area with partial figure of second antenna and first maxilla, dorsal; e. abdomen and plumes, ventral (from Gnanamuthu 1957). Scale bars: a = 5.0 mm; b, c = 1.0 mm; d = 0.02 mm; e = 1.0 mm.