1917] Synopsis of Beetle Mites 123 



bb. Claws of the tarsi of the first three pairs of legs monodactyle, of the fourth 



pair tridactyle Heterobelba Berlese, 1913 



[Type: H. galerulata Berlese] 

 bbb. Claws of all the tarsi tridactyle. 



c. Pseudostigmatic organs foliaceous, or flabelliform, 



Licneremaeus Paoli, 1908 

 [Type: Notaspis licnophora Michael] 

 cc. Pseudostigmatic organs not foliaceous or flabelliform. 



d. Dorsal integument pitted or reticulate; second pair of legs about as long 

 as others. 

 e. Tectopedia well developed; dorsal integument of abdomen pitted; 

 hairs of abdomen long, flexible, pectinate, 



Tricheremaeus Berlese, 1908 



[Type: Notaspis serrala Michael] 



ee, Tectopedia absent or rudimentary; dorsal integument of abdomen 



reticulate; hairs of abdomen simple Micreremus Berlese, 1908 



[Type: Eremaeus brevipes Michael] 

 dd. Dorsal integument smooth; second pair of legs shorter than the others, 



Heterodamaeus n. gen. 

 [Type: Damaeus bicostatiis Koch] 

 aa. Border between cephalothorax and abdomen incomplete dorsally toward the 

 median line so that the two parts of the body run together here, 



Amarus Berlese, 1896 

 [Type: A. troisi (Berlese)] 



Key to the Genera of Subfamily Nothrince. 



a. Abdomen as a whole convex, or arched, above. 



b. Dorsal plate of abdomen not fully chitinized; adults carrying cast nymphal 

 skins arranged so as to form concentric areas at different levels, 



Neoliodesi3 Berlese, 1888 

 [Type: N. theleproctus (Hermann)] 

 bb. Dorsal plate of abdomen fully chitinized; adults without cast nymphal 

 skins. 

 c. Abdomen without lateral excretory tubes. 

 d. No seta-bearing tubercules on dorsum of abdomen, 



Hermannia Nicolet, 1855 

 [Type: H. picea (Koch)] 

 dd. Mammse-like, seta-bearing tubercles on dorsum of abdomen, 



Masthermannia Berlese, 1913 



[Type: M. mammillaris (Berlese)] 



cc. Abdomen with a pair of lateral excretory tubes projecting some distance 



from the surface of the body wall Hermanniella Berlese, 1908 



[Type: H. granulata (Nicolet)] 

 aa. Abdomen as a whole not convex above, but flat, concave, or undulating. 

 b. Abdomen oval in outline, except for the anterior border. 



c. Tarsal claws monodactyle Heminothrus''* Berlese, 1913 



[Type: Nothrus targionii Berlese] 

 cc. Tarsal claws tridactyle. 



d. Abdomen with a broad margin above differently marked from a central 



area Cymbaeremaeus Berlese, 1896 



[Type: Eremaeus cymba Nicolet] 

 dd. Abdomen without a differentiated band or margin above, 



Eremaeus Koch, 1842 

 [Type: E. oblongus Koch.] 

 bb. Abdomen rectangular, or trapezoidal in outline. 



c. Abdomen with two large lateral lobes extending backward from its 



posterior margin Uronothrusi^ Berlese, 1913 



[Type: Nothrus segnus (Hermann)] 



^^ = Liodes Hermann, which name was found by Berlese to be preoccupied. 

 i^Suggested as a subgenus by Berlese in 1913. 

 ^^Erected as a subgenus by Berlese. 



