128 
Parasitic Arthropoda 
94. Dermatophilus penetrans, gravid female. After Moniez. 
pests may attack a single individual (fig. 95). Here they lie with the 
apex of the abdomen blocking the opening. According to Fulle- 
born (1908) they do not 
penetrate beneath the 
epidermis. The eggs are 
not laid in the flesh of 
the victim, as is some¬ 
times stated, but are 
expelled through this 
opening. The female 
then dies, withers and 
falls away or is expelled 
by ulceration. Accord¬ 
ing to Brumpt, she first 
quits the skin and then, 
falling to the ground, 
deposits her eggs. The 
subsequent develop¬ 
ment in so far as known, 
is like that of other fleas. 
The chigoe usually 
enters between the toes, 
the skin about the roots 
of the nails, or the soles 
95. Chiggers in the sole of foot of man. Manson’s 
Tropical Diseases. Permission of Cassell and Co. 
