Trabeculus fuscoclypeatus ( Johnston & Harrison, 1912 )

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 : 63-64

Trabeculus fuscoclypeatus ( Johnston & Harrison, 1912) sensu lato New record

Philopterus fuscoclypeatus Johnston & Harrison, 1912: 368 , fig. 4.

Giebelia fuscoclypeata ( Johnston & Harrison, 1912) ; Harrison 1916: 144.

Trabeculus fuscoclypeatus ( Johnston & Harrison, 1912) ; Hopkins & Clay 1952: 349.

Trabeculus fuscoclypeatus ( Johnston & Harrison, 1912) ; Timmermann 1959: 491, fig. 5.

Holotype Nymph in MONZ ( Palma, Lovis & Tither 1989: 45).

Type host: Pterodroma neglecta neglecta (Schlegel, 1863) .

Galápagos host: Pterodroma phaeopygia (Salvin, 1876) .

Galápagos locality: Isla Santa Cruz.

Galápagos references: This paper.

Other significant references: Timmermann (1959: 491, fig. 5); Timmermann (1965: 129, fig. 69); Price et al. (2003: 244).

Material examined: 68 males, 53 females and 23 nymphs (3 samples, MONZ) .

Remarks: Pterodroma phaeopygia is endemic to the Galápagos Islands. Although Dickinson (2003: 74) listed it as the subspecies Pterodroma phaeopygia phaeopygia , we regard it as a full species as well as Pterodroma sandwichensis (Ridgway, 1884) , following Browne et al. (1997: 814). The material examined from Pterodroma phaeopygia differs in some features from typical Trabeculus fuscoclypeatus . However, we do not consider that such differences justify naming a new taxon; hence we qualify the samples from Pt. phaeopygia as “ sensu lato ”.

This is the first record of Trabeculus fuscoclypeatus from the Galápagos Islands, and a new host-louse association for Pterodroma phaeopygia . Four other species of Pterodroma are listed in Price et al. (2003: 244) as hosts of this louse species.