Trombidiformes 



207 



Reference: 



Baker, E. W. 1949. Pomerantziidae, a new family of mites. J. Wash. Acad. 

 Sci. 30(8):269-271. 



Figure 156 Pomerantzia charlesi 

 Baker. Dorsal view of female. 



Figure 157 Pomerantzia charlesi 

 Baker. Tarsus i showing sensory setae. 



Pterygosomidae Oudemans, 1910 



Figures 158, 159 



Diagnosis: These mites are parasitic on lizards, with the exception 

 of Pimeliaphilus podapolipophagus Tragardh which is a parasite of 

 cockroaches, and P. isometri Cunliffe, found on a scorpion. They are 

 red and small to medium in size (from 0.160 to 1.30 mm. long). Those 

 found on lizards are flat, baglike in oudine, and about twice as wide as 

 they are long. The body setae range from few to many and are usually 

 rodlike, leaflike, or fanlike. A shield, -either whole or divided, may or 

 may not be present on the propodosoma. Also the pterygosomids may 

 or may not possess a pair of lenshke eyes. The gnathosoma is terminal 

 or deeply inserted into the body and the chelicerae are narrow, with 

 a distorted, movable chela in the lizard parasites and a sharp, piercing, 

 movable chela in the cockroach parasites. At the base of the gnatho- 

 soma are prominent peritremes. The palpus has a thumb-claw complex 

 but the thumb is not prominent. The coxae are located anteriorly in 

 the lizard parasites while they are more normal in those parasitizing 



