TRUE GUESTS, ECTO- AND ENTOPARASITES. 



413 



which its host emerged. The Mctopina larva consumes so little food 

 and is so considerate of its host, that it can hardly be said to produce 

 any injurious effect on the colony; at any rate, the larvae which have 

 borne commensals develop into perfectly normal workers. The ants 



FIG. 249. Chalcidid ant parasites. (Original.) A, Isomeralia coronata, female; B, 

 lateral view of same ; C, Kapala floridana, male ; D, female of same. 



clean the commensals while they are cleaning their own progeny and 

 show no signs of even being aware of their presence in the nest. 



Another case of commensalism is that of the European Antenno- 

 phonis species (A. nhlinanni. pnbcscens, foreli and grandis], studied 

 by Janet (1897^), Wasmann (1902;) and Karawaiew (1905^ 19060). 

 These mites occur only in the nests of Lasins and cling to the workers 



