ENTOMOLOGISCHE BERICHTEN. 
305 
Fam. Tyroglyphidae Donn. 1868. 
A. 1. With propodo- and hysterosomatic shield. Stereo- 
glyphus Berl. 1923. 
A. 2. With propodosomatic shield ; <ƒ moreover with opis- 
thosomatic shield; hind part of propodosoma with 
transverse row of 2 hairs only; <ƒ tarsi IV? fiistio- 
gaster BERL. 1883 (inch Monieziella BERL. 1898.) 
A. 3. With propodosomatic shield only. 
B. 1. Hind part of propodosoma with transverse row 
of 6 hairs; legs short and thick, without any 
spines. Only Larvae and Nymphae I known. 
Valmontia OUDMS. 1923. 
B. 2. Hind part of propodosoma with transverse row 
of 4 hairs, of which the inner pair may be 
minute. 
C. 1. Skin polished; legs normal; legs 1 may 
be thicker; with, though not robust, spines 
(pay attention to ventral side of tarsi); 
mandibles normal ; claws without ventral 
knob. 
D 1. Propodosoma with transverse row of 
4 hairs almost equal in length; 
hysterosoma with short bristles; 4long 
posterior marginal hairs; tarsi dorsally 
without spines, ventridistally with 1 
little spine; <g tarsus I ventridistally 
with 2 little spines one behind the 
other: Tyroglyphus Latr. 1795, type 
AcarusfarinaeL.\15S ( md.Acotyledon 
OUDMS. 1902. 
D. 2. Propodosoma with transverse row 
of 4 hairs, the inner two 'shorter; 
hysterosoma with short bristles and 
longer hairs; tarsi dorsidistally with 
1 little spine, ventridistally with 3-5 
little spines; tarsi 1,11 and IV ventraily 
in the middle with 2 spines, III with 
