Trombidiform es 



201 



Terpnacaridae Grandjean, 1939 



Figures 145-147 



Diagnosis: Granular and reddish in 

 color the terpnacarids are small mites 

 about 0.35 mm. in length. They are 

 soft-bodied and have a somewhat sack- 

 like, segmented hysterosoma. A suture 

 is situated between the propodosoma 

 and the hysterosoma. One pair of prop- 

 odosomal sensory setae, one pair of 

 lateral, lenslike eyes, an unpaired, an- 

 terior median eye on the venter of the 

 tectum or anterior protuberance of the 

 propodosoma are present. The palpus 

 is composed of five segments and does 

 not have a claw-thumb complex. The 

 chelicerae have opposed chelae. Di- 

 vided into two groups, the legs are five- 

 segmented and fairly long, especially 

 legs I and iv; the femur is divided into 

 two parts in legs i, in, and iv. All tarsi are provided with two claws 

 and a pulvillus. Three pairs of genital suckers are present. 



Figure 145 Terpnacariis hoiivi- 

 eri Grandjean. Dorsum of 

 female. (After Grandjean 1939) 



Figure 146 Terpnacarus bouvieri 

 Grandjean. Genital-anal region. (After 

 Grandjean 1939) 



Figure 147 



Grandjean. 

 1939) 



Terpnacarus bouvieri 

 Palpus. (After Grandjean 



Genera: 



1 Terpnacarus Grandjean, 1939 



Type. Terpnacarus bouvieri Grandjean, 



2. Alycosmesis Grandjean, 1939 



Type. Sebaia palmata Oudemans, 1904 



1939 



