HOW TO KNOW THE IMMATURE INSECTS 



69a. 2nd antennal segment more than 4 times as long as the basal 

 segment. Fig. 256 Family LATHRIDIIDAE 



^vrfA/A>A< These "minute brown scavenger beetles" are 



very small. Some are pests in drugs and other 



commercial products. Both larvae and adults 



are so small that they often escape detection. 

 Fig. 256. Dorsal os- 

 pect of heod. 



69b. 2nd antennal segment subcylindricol, 3 times or less, as long as 

 the basal segment 70 



70a. Spiracles oimular, not on tube; cerci not distinct. 



Fig. 257, Subfamily Eucinetinae, DASCILLIDAE 



This subfamily contains only a few 

 small beetles. Their larvae are not 

 well known. 



Fig. 257. a, Eucinefus sp.; b, A 

 spiracle. 



70b. Spiracles biforous, on tubes; cerci strong. 



Fig. 258 FamUy DERODONTIDAE 



Fig. 258. a, Derodontus moculofus 



Melsh; b, A spiracle on tube. 



The members of this small 

 family live in fungi. They are 

 known as the "Tooth necked" 

 fungus beetles. 



71a. Mala falciform. Fig. 259. 



71b. Mala obtuse, or with inner margin irregularly 

 toothed or notched. Fig. 260 78 



102 



Fig. 260. 

 Maxilla. 



