Trombidiformes 



227 



may or may not possess a propodosomatic shield (actually a lack of 

 or differentiation in skin striations rather than a sclerotization). No 

 suture is present between the propodosoma and the hysterosoma. The 

 peritreme, at times freely protruding and located at the base of the 

 chelicerae, is present. The rostrum is short and conehke. A movable 

 chela which is distal and hook- 

 like is also present. The palpal 

 tibia has one to three internal 

 claws and the palpal tarsus is lo- 

 cated disto-ventrally on the tibia. 

 A smooth tubercle-like projection 

 on the anterior portion of the pro- 

 podosoma bears a pair of sensory 

 setae; the propodosoma has a pair 

 of sensory setae. The legs radiate 

 from the body and the coxae are 

 in one or two closely separated 

 groups. All tarsi are either entire or divided into many segments; the 

 tarsi have two claws which may be combed, toothed, or pilose and 

 which have a clawlike, brushlike or bell-like empodium. There are no 

 genital suckers. There are two subfamilies. 



Key to the Anystidae 



1. Short, broad; with two pairs of eyes; palpal tibia with three claws 



Anystinae 



Longer than broad; with one to two pairs of eyes; palpal tibia with 

 one smooth claw or two feathered claws Erythracarinae 



Figure 170 Anystis baccarum (Lin- 

 naeus). Dorsum of female. (After 

 Oudemans 1936) 



Anystinae Oudemans, 1936 



Genera: 



1. Anystis v. Heyden, 1826 (= Actineda Koch, 1836) 

 Type. Trombidium cornigerum Hennann, 1804 



2. Autenriethia Oudemans, 1936 

 Type. Actineda velox Berlese, 1905 



3. Barella Oudemans, 1936 



Type. Anystis sinensis Berlese, 1923 



4. Scharfenbergia Oudemans, 1936 

 Type. Actineda hilaris Koch, 1836 



5. Snartia Oudemans, 1936 



Type. Snartia nepenthus Oudemans, 1936 



