(DK. A. C. OITDEMANS) LIST OV DUTCH ACARI. 



129 



(C/dorospica) c/iloris. De Geer found it in great numbers attached 

 to the body of the « Punaise très-applatie qui vit sur l'agaric du 

 Bouleau» {^Cimex heiidae L. , Cïmex depressas lefddae, De Geer, 

 Mém. III, p. 305, t. 15, f. 16—19). Mr. J. A. F. Fokker 

 kindly informed me that this hemipteron is now known under the 

 name of Aradus betulae L. 



The reason why Chei/letus squamosus was attached in a great 

 number to the body of this little insect was most probably the 

 same as that why three CMei/letus venustisshmis were found ad- 

 hering to the wings of a species of Tinea, (Berlese in Att. R. 

 1st. Ven. Sc. Lett. Art. (5) Vili, 1881, p. (sep.) 42) or to the 

 wings of a Larentia ßuctuata (Haller in Mitth. Schweiz. Ent. Ges. 

 VI, 4,1881, p. 153), viz. in order to be transported by the insect. 



But the reason why Chei/letus squamosus was present on the body 

 of Chlorospiza Moris is certainly quite another. It was most probably 

 preying on birds-mites: Avicolae Fum. and Rob. 1868 [Bermalei- 

 cJddae Murr. 1877) like so many other CJieyleti. 



Compared with the known species it proves to be more related 

 to Cheyletia laureata Haller than to any other. 



Its measurements are: 



Length of pseudocapitulum . . . . 116 



Breadth of ditto 145 



Length of body 384 



Breadth of ditto 311 



Total length 500 



Thousands 



of 

 milUmeter. 



Length of 2d. scale to the left ... 75 



Breadth of ditto 45 



Length of 5th. scale to the right . . 45 



Breadth of ditto 75 



Length of anal scale 30 



Breadth of ditto 33 



Length of 1st leg without immovable base 247 



In fig. 2 I have reproduced my figure as it was published in 

 this Journal Vol. 24, pi. 12, fig. 17. There are two differences 



in the figures of ÜE Geer (fig. 1) and mine (fig. 2) viz. 1 st. 



