Pectinopygus gracilicornis gracilicornis ( Piaget, 1880 )

Palma, Ricardo L. & Peck, Stewart B., 2013, <strong> An annotated checklist of parasitic lice (Insecta: Phthiraptera) from the Galápagos Islands </ strong>, Zootaxa 3627 (1), pp. 1-87 : 42-43

Pectinopygus gracilicornis gracilicornis ( Piaget, 1880)

Lipeurus gracilicornis Piaget, 1880: 309 , pl. 25, fig. 6.

Lipeurus potens Kellogg & Kuwana, 1902 ; Kellogg, 1906: 319. In part Pectinopygus gracilicornis gracilicornis ; in part Pectinopygus minor ( Ewing, 1924) ; in part Pectinopygus annulatus ( Piaget, 1880) ; in part Pectinopygus sulae ( Rudow, 1869) .

Esthiopterum gracilicorne ( Piaget, 1880) ; Harrison 1916: 135.

Esthiopterum gracilicornis ( Piaget, 1880) ; Ferris 1932: 61, figs 13a-e.

Pectinopygus (Epifregata) gracilicornis ( Piaget, 1880) ; Thompson 1939: 212.

Pectinopygus (Epifregata) gracilicornis ( Piaget, 1880) ; Guimarães 1945: 185, fig. 14.

Pectinopygus gracilicornis ( Piaget, 1880) ; Hopkins & Clay 1952: 269.

Pectinopygus gracilicornis ( Piaget, 1880) ; Price et al. 2003: 208.

Lectotype ♂ in NHML ( Clay 1973: 221).

Type host: Fregata minor (Gmelin, 1789) .

Galápagos host: Fregata minor ridgwayi Mathews, 1914 .

Galápagos localities: Isla Genovesa; Isla Seymour; Isla Española.

Galápagos references: Kellogg (1906); Kellogg (1908: 43); Thompson (1939).

Other significant references: Ferris (1932); Guimarães (1945); Clay (1973: 221); Palma (1996: 199).

Material examined: 50 males, 9 females and 48 nymphs (5 samples, EMEC, MONZ) .

Remarks: We regard this taxon as a subspecies because the differences between the populations of Pectinopygus from Fregata magnificens and Fregata minor refer to dimensions only. Therefore, in this case, we do not follow Price et al. (2003: 208). From the Kellogg Collection, we examined many specimens labelled and reported by Kellogg (1906: 319) as “ Lipeurus potens ” from several host species, and have identified them as four species of Pectinopygus , as listed in the synonymy above.