SPINNING MITES. 



"5 



CASE which seems the chief character of Diiges' genus Raphignathus. 



^ The structure of the mouth is adapted for 



living on plants. 



M. Duges found, moreover, in the hinder 

 part of the body, two papillae adapted for 

 spinning. We have no hesitation therefore 

 in regarding Raphignathus as belonging 

 to the Tetranychidse. 



Tetranychus ruberri- 

 mus is of a bright red 

 colour, but smooth. 

 Duges found it fre- 

 quently under stones 

 and in shady places, but 

 it doubtless would also 

 be found on plants at 

 the proper season. 



Raphignathus ruberrinius. 

 Copied from Dugds. 



Raphignathus ruber. 



Copied from Koch's 



Ubersicht. 



Raphignathus ruber (A'^f/;, Ubers). 



Described by Koch first under 

 the name of Caligonus ruber. 



Genus Megamerus {Duges). 



A genus, established by Duges, 

 of which the more important 

 characters are, that the palpi are 

 long, the mandibles provided 

 with nippers, and the hind 

 thighs enlarged. 



The Megameri live in nume- 

 rous families, running swiftly and 

 occasionally leaping, which their 

 large hind thighs enable th'em to 

 do- and they appear to spin a 



Megamerus celcr. Copied from Duggs' figure. 

 II 2 



