Pectinopygus bassani bassani (0. Fabricius, 1780) 



Pediculus bassani 0. Fabricius, 1780. Fauna Groenlandica: 218. 

 Doaophorus bassanae Denny, 1842. Mon. Anopl. Brit.: 48 and 110, 



pi. 6, fig. 3. 

 Lipeurus staphylionoides Denny, 1842. Mon. Anopl. Brit.: 59 and 



180, pi. 15, fig. 2. 

 Lipeurus pullatus Nitzsch, 1866. In Giebel, Z. ges . NatWiss, 28: 



387. 

 Type host: Morus bassanus (Linnaeus) — Gannet. 



Head slightly longer than wide. Dorsal anterior plate square, well 

 defined, with 2 small posterolateral posteriorly directed projections. 

 Clypeal region about 1/4 of the length of the head. Antennae sexually 

 dimorphic, 1st segment of male enlarged, 3rd segment with distal pro- 

 jection. Prothorax more than twice as broad as long; a small spear- 

 shaped sternite present with 2 small hairs on the posterior margin on 

 either side of the mid-line. Pterothorax slightly narrower than head 

 at its greatest width. Abdomen stout. Slightly less than twice as long 

 as wide. 



Measurements: Pectinopygus bassani bassani 

 (from Thompson, 1940) 



o" ? 



Total Length 

 Greatest Width 



Specimens Host 



1 slide Morus bassanus 



Pectinopygus farallonii (Kellogg, 1896) 



Nirmus farallonii Kellogg, 1896. Proc. Calif. Acad. Sci., 6: 103, 



pi. 5, fig. 4. 

 Type host: Phalaaroaorax auritus (Lesson) — Double-crested 

 Cormorant . 



Head conical, narrow in front; trabeculae small; temporal margins 

 rounded; occipital margin slightly concave; antennae sexually dimorphic; 

 those of the female short, filiform, with segment 2 the longest, seg- 

 ments of male antennae in the following order of length; 1, 2, 3, 5, 4; 

 segment 1 very long and curving anteriorly giving the 2 antennae the 

 appearance of a set or horns. Dorsal anterior plate shield-shaped. 

 Prothorax wider than long, with rounded angles. Pterothorax with 

 lateral margins diverging slightly, posterior margin straight. Abdomen 

 elongate, with posterior angles projecting, with 2 or 3 rather long 

 hairs in each angle. 



Kellogg (1896) described this species from a single female col- 

 lected in California. Peters (1928) records it from Ohio, Peters 

 (1936) Georgia, Illinois and New Hampshire, Procter (1938) Maine, 

 Brimley (1938) North Carolina, Emerson (1940) Oklahoma, and Whitehead 

 (1954) Quebec. 



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