36 (Dil. A. e. ÜUÜEMANS), NEW LIST OF DUTCH ACARI , II. 



40. Parasitus kempersi Oudms., nov. sp. 

 (With Plate 4, fig. 69—71). 



Of this species I have only two males, caught by Mr. K. J. W. 

 Kempers near Nijkerk. 



Length 1050 ^u. 



It remembers strongly of Parasitus cornutus (G. et R. Can.) 

 both in habitus and in the armature of the second pair of legs. 

 It differs however, immediately from it, and as far as I know 

 from all the other species of Parasitus Latr,, by having a pecten 

 on the ventral side of the Jirst article of the palpi (Fig. 70), and 

 by the total absence of a mentum, 



Berlese divides the species of this genus into two groups : 

 Gamasus (= Parasitus Latr.), with maris corniculi labiales biarfi- 

 culati, and Evgaviasus with maris corniculi labiales biarticulati. As 

 is shown by Fig. 70 , the species in question belongs to the group 

 Parasitus, whilst the species which most resembles il: Parasitus 

 cortiutus (G. et R. Can.) is an Eugamasus. 



The dorsal side (Fig. 69) shows many regularly placed bristles 

 of two kinds , viz. small ones and strong ones. The small ones end 

 sharply, the strong ones are rod-like with rounded tops. There are 

 two shoulder-bristles of the strong type. Further there are two 

 longitudinal rows of four strong bristles each on the back. One 

 pair stands on the vertex , one pair on the level of the shoulders, 

 one pair more backward but still on the anterior shield, and one 

 pair nearly in the middle of the posterior shield. 



Of the second pair of legs the femur (Fig. 71) has a peculiar 

 chitinous appendage which is bifid, one of its teeth is very short 

 and truncated and beais a ball; the other is knife-shaped. The 

 genu too bears a bifid and the tibia a single chitinous appendage. 

 Fig. 71 represents the leg viewed from the ventral side. 



The epistonict, (Fig. 69) does not show any spines ; it is quite 

 straight. No jugular shields. 



