Planaria daatyligera daatyligera Kenk, 1935 



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Synonym: Planaria daatyligera Kenk , 1935 



21 m 22 



I I I I 



vd gl bd vs od am de ode gp ad gl 



Fig. 22 after Kenk (1935). 



Length of mature animals up to 13 mm, width 1.75 mm. Head truncate, with 

 almost straight frontal margin and rounded lateral edges. Behind the 

 head is an insignificant narrowing or neck. Eyes usually two, their 

 distance from each other about 1/3 the width of the head and their dis- 

 tance from the frontal margin much greater than from the lateral margins. 

 Dorsal side darkly pigmented, gray, brown, or black; ventral surface 

 lighter. Externally indistinguishable from Rymanella and some species 

 of Phagooata. Testes predominantly ventral, their zone on either side 

 reaching to the level of the mouth. The gonopore leads into the genital 

 atrium which has only one compartment, the male atrium, as the openings 

 of the common oviduct, the bursal canal, and the adenodactyl are in the 

 immediate vicinity of the gonopore. The sperm ducts enter the penis bulb 

 anterolateral ly and open into the seminal vesicle with a common opening. 

 The ejaculatory duct emerging from the vesicle tapers posteriorly and 

 open at the tip of the penis papilla. The thickness of the muscle coat 

 underlying the outer epithelium of the papilla is about equal to that 

 adjoining the epithelium of the male atrium. Behind the gonopore is the 

 hollow adenodactyl. Cocoon ellipsoidal or spherical, unstalked. Only 

 sexual reproduction has been observed. Inhabitant of springs and creeks 

 in Virginia. Literature: Kenk (1935). 



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