NEMATODE PARASITES OF BIRDS 



THELAZIA CAMPANULATA (Molin, 1858) Railliet and Henry, 1910 



313 



Synonyms. — Filaria oami'panulata Molin, 1858; Filaria falco-nis 

 magnirostns Molin, 1858. 



Hosts. — Primary: Falco magnirostris (Rupornis m/ignirostris) ; 

 secondary : Unknown. 



Location. — Under nictitating membrane. 



Morphology. — Thelazia (p 311) : Anterior extremity of body atten- 

 uated, obtuse. Cuticular surface annulated, the annulations compan- 

 uliform and imbricated. Buccal cavity (fig. 374a) 17 to lit*, deep, 

 according to Travassos, by 28 to 35/* wide. Esophagus subcylindri T 

 cal, 460 to GOO/i long. 



Male 17 mm. long by 400/t wide. Caudal extremity (fig. 3746) 

 curved toward the ventral surface; cloacal aperture 140/* from end. 



osmm 



Fig. 374. — Thelazia campandlata. a, Head end ; b, male tail ; c, female 

 tail. After Tkavassos, 1918 



Seven pairs of preanal papillae and I unpaired median papilla 

 anterior to cloacal aperture; posterior to the cloacal aperture 1 large 

 median papilla and 3 pairs of papillae. Spicules very dissimilar 

 and unequal, one 190/* long by 28/* wide, alate laterally at its distal 

 extremity, the other 2.67 mm. long by 7/* wide, with a slight swell- 

 ing 640/1. from the proximal end. 



Female 15 to 23 mm. long by 500 to 600/* wide. Tail (fig. 371c) 

 nearly straight, pointed. Vulva about 350/* from anterior end of 

 body; anus 300//. from posterior end, in a specimen 23 mm. long. 



Life history. — Unknown ; probably involves intermediate stages in 

 other hosts. 



Distribution. — South America (Brazil). 



THELAZIA CHOLODKOWSKII Skrjabin, 1922 



Hosts. — Primary: Caprimulgus europaeus; secondary: Unknown. 



Z o cation: — Ey e . 



Morphology. — Thelazia (p. 311). 



Male unknown. 



