Elongate Philopteridae; adults average 3 to 5 millimeters in 

 length. Head longer than wide; forehead rounded in front with 4 to 

 6 circular incrassations on lateral margins; clypeal signature absent; 

 eyes present. Postantennal region slightly wider than preantennal 

 region. Mandibles set between antennae. Longitudinal band on each 

 side of ventral surface of occiput extending to base of mandible. 

 Gular plate well developed. Antennae 5 segmented, normal in female; 

 1st segment enlarged with appendage on posterior margin in male, 3rd 

 segment produced apically into a long, curved hook. Prothorax with 

 sides subparallel; pterothorax slightly wider than prothorax. Abdomen 

 with well developed paratergal plates on abdominal segments I-VII 

 usually connected by less developed median bands; tergite VIII usually 

 with complete transverse plate. Spiracles present on abdominal segments 

 II-VII. 



Falcolipeurus marginalis (Osborn, 1902) 



Lipeurus marginalis Osborn, 1902. Ohio Nat., 2: 176. 

 Lipeurus assessor minor Kellogg and Paine, 1910 (nee Piaget, 



1880). Ent. News, 21: 460. 

 Trollipeurus eichleri Zlotorzycka, 1963. Ang . Parasit., 4: 5, 



figs. 3-6. 

 Type host: Cathartes aura (Linnaeus) — Turkey Vulture. 



Head long, rounded in front, slightly narrowing apically, pos- 

 terior margin slightly emarginate. There are 6 inflated incrassa- 

 tions along the border anterior to the antennae, 3 on each side. 

 Pterothorax and abdominal segments with slender dark marginal lines. 

 Legs with narrow black borders on the outer margin of femur and tibia. 

 Described from 2 females collected at Ames, Iowa. 



Specimens Host Locality Date Collector 



7? , 9cf Coragyps atratus Lincoln, Me. VI-17-1938 W.J.Clayton 



The above collection was made from Coragyps atratus (Bechstein) — 

 Black Vulture, which is also a host for this species of mallophagan but 

 a very rare bird in New England. 



Measurements: Falcolipeurus marginalis (Osborn, 1902) 



5 cf 5 9 



Total Length 3.27 - 3.37 3.49 - 3.73 



(3.33) (3.58) 



The number in parentheses is the mean. 



103 



