HOW TO KNOW THE INSECS 



16b Not as in 16a 17 



17a Abdomen with seven or eight ventral segments 18 



17b Abdomen with less than seven ventral segments 20 



18a Middle coxae separated from each other. Epipleurae 



absent. Fig. 103. Family 24, LYCIDAE 



Fig. 103. Calopteron reticulatum (Fab.) 



Dull orange yellow with black mark- 

 ings. Length 12-20 mm. Unlike the 

 fireflies, which they strongly resemble, 

 the members of this family are diurnal. 

 They spend 



EPl5TERNUfrl^ 



hTndooxa \ 



Fipure 104^. 



their day 

 hunting In- 

 sects on 

 which they 

 ,,_ ^ feed. 



Figure 103. 



18b Middle coxae touching. Epipleura 

 distinct 19 



19a Head more or less completely 

 covered by prothorax; epister.jum of metathorax not sinuate 

 (double curved) on inner side. (Fig. 104^ b) . 

 (The Firefly Beetles) Fig. 104. p^^-.y 25, LAMPYRIDAE 



Fig. 104. Lucldota atra (Fab.) 



Dull black; sides of thorax dull yellow 

 with reddish margin next to black mid-line. 

 Length 8-11 mm. 



The Fireflies live a sluggish life by day 

 but at dusk come out with a splendor un- 

 approached by other Insects. The fire flashes 

 apparently serve to attract the mate. In some 

 species the females are wingless and are 

 known as glow worms. 



Figure 104, 



19b Head, if at all, less than half covered by the prothorax; 

 episternum of metathorax sinuate' (with S curve) on inner side. 

 (Fig. 104i a). (The Soldier Beetles, etc) Fig. 105. 



Family 27, CANTHARIDAE 



Fig. 105. Chaullognathus pennsylvanlcus De G. 

 The Soldier Beetle. 



Thorax and elytra yellow marked with black; 

 head and underparts black. Very abundant In 

 late summer and fall on goldenrod. Length 

 9-12 mm. 



The members of this family. In shape and soft 

 bodies, resemble the fireflies. They are di- 

 urnal and probably live on pollen and nectar of 

 flowers. 



Figure 105, 



20a Abdomen with six ventral segments 21 



20b Abdomen with five ventral segments 23 



62 



