A carina 
267 
. Palpi small, three segmented, adhering for some distance to the lip; 
ventral suckers at genital opening or near anal opening usually 
present; no eyes; tarsi often end in suckers; beneath the skin on 
the venter are seen rod-like epimera that support the legs; body 
often entire. Adults frequently parasitic. .. .SARCOPTOIDEA. 
f. With tracheae; no ventral suckers; legs ending in claws; body 
divided into cephalothorax and abdomen; the female with a 
clavate hair between legs I and II. Usually not parasitic 
on birds and mammals. Tarsonemid.® 
g. Hind legs of female ending in claw and sucker as in the other 
pairs. Pediculoidin je 
To this sub-family belongs the genus PEDICUXOIDES 
P. ventricosus is described on page 69. 
155. Margaropus winthemi, male. After 156. Margaropus winthemi, 
Nuttall and Warburton. capitulum and scutum, 
After Nuttall and War- 
burton. 
gg. Hind legs of the female end in long hairs. TarSONEMINjE 
Tarsonemus intectus Karpelles, normally found upon grain, 
is said to attack man in Hungary and Russia. Other 
species of the genus affect various plants (c.f. fig. 150, g). 
ff. Without tracheae; no such clavate hair. 
g. Genital suckers usually present; integument usually without 
fine parallel lines. 
h. Legs short, without clavate hair on tarsi I and II. On 
insects. Canestrinid^e. 
hh. Legs longer, with a clavate hair on tarsi I and II, Not 
normally parasitic except on bees. Tyroglyphid^e 
i Dorsal integument more or less granulate; claws very weak, 
almost invisible; some hairs of the body plainly feathered; 
ventral apertures large.Glyciphagus Her. 
This genus occurs in the United States. In Europe the 
mites have been found feeding on all sorts of substances. 
They are known as sugar mites and cause the disease 
