HOW TO KNOW THE INSECTS 



9c Antennae ten jointed. Legs slender without stiff hairs. 

 Hind coxae forming large plates. (Repeated here since habits 

 are aquatic) (The Crawling Water Beetles) Figs. 93 and 88. 



Family 5, HALIPLIDAE 



Fig. 93, Peltodyteg pedunculatus Blatch. 



Dull yellov/ with black markings. Note two 

 I'^ipre^^sed black spots on base of thorax 

 distinguishing this genus from Hall plus . 



Lem^tli 3-3.5 vm. 



ir is'-ire J-j 



10a Antennae lamellate, bearing flattened plates at end. 



See Figs. 94 and 9b 11 



10b Antennae not lamellate 14 



11a Plates composing antennaj club 

 flattened and capable of close 

 apposition. Fig. 94 12 



flattened 

 platen ^' ^^'' 



Figure 94. 



lib P 

 capable 

 but s 

 Fig. 



12a A 

 then 



lates 



of c 



light 



95. . 



of antenna I cl ub not 

 lose apposition, usually 

 ly flattened. 



13 



Figure 55. 



bdomen with six visible ventral segments, or If only five, 

 the epimera of the metathorax reaching the coxae. (The 

 Scarabaeids or Dung Beetles) Fig. 96. 



Fami ly 97, SCARABAEIDAE 



Fig. 96. Geotrupes splendldus Fab. 



1/Vell rounded, metallic green, some- 

 times purple or bronze. Abundant in 

 dung. Length 13 to 17 mri. 



Because of their style of antennae the 

 members of this family are called Lamel- 

 llcorn Beetles. It is a large family rang- 

 ing widely in size, color, shape, and 

 habits. Our destructive white grubs which 

 grovj up to be I/ay Beetles belon^r here, 

 as do many other plant feeders. Some 

 species are scavengers and do no harm. 



59 



