A NEW GRUIMENOPON (MALLOPHAGA— 
MENOPONIDAE) 1 
By R. L. Edwards 
Biological Laboratories, Harvard University 
The genns Gruimenopon, typically parasitic on the bird 
family Gruidse (cranes), has not been previously recorded 
from North America. 
Gruimenopon canadensum, n. sp. 
Plate 6 
A relatively atypical member of the genus. 14 males 
averaged 1.94 mm. in length and 12 females averaged 2.29 
mm. in length. Uncleared specimens superficially resem- 
ble species of the genus Colpocephalum , being light tan 
in color with large, dark ocular and cervical sclerotiza- 
tions. Sexual dimorphism, excluding size, very slight. 
Head broader than long, not as smoothly rounded an- 
teriorly as in G. Ion gum. Antennae with terminal segment 
typically elongate-cylindrical (Fig. 4). Latero-posterior 
margin of temple with three very long, stout setae. 
Thorax as in longum. Prothoracic tibia with fairly well 
developed comb. Meso- and metathoracic tibiae with rela- 
tively thick patches of setae distally. These patches con- 
sist of three or more almost comb-like rows of fine and 
coarse setae. Metathoracic femora and fourth abdominal 
sternite with large brushes typical of genus. Terminal 
segments with very long, stout setae directed posteriorly. 
Female with only shallow, median indentation in eighth 
sternite. 
Male genitalia characterized by large, hyaline, termin- 
ally squared prolongation of basal plate. Parameres hya- 
line, only slightly curved, each with single seta terminally. 
Preputial sac beset with numerous, small teeth. Other 
sclerotized structures connected with basal plate and pre- 
putial sac best indicated by figure 3. 
1 Published with a grant from the Museum of Comparative Zoology at 
Harvard College. 
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