3i8 



ECONOMIC ENTOMOLOGY 



Mangel Flea Beetle (Fsylliodes punctulata Mels.). — Feeds on the 

 leaves of mangels, beets, rhubarb, hops, radish, etc. Probably two 

 broods in a season. 



Adult. — Shiny black or dark brassy-green, upper surface finely 

 punctulated or pitted in regular rows; j^-fo iiich long; femora, tarsi, 

 basal joints of antennas pale obscure yellowish; hibernates. 



Eggs. — Minute, oval, yellow. 



Pig. 207. — Spinach flea beetle: a, adult beetle; b, egg mass; bh, sculpture of 

 egg; c, full grown grub; d, pupa; e, newly hatched grub; /, abdominal segment of 

 same; a, c, d, 5 times natural size; b, e, more enlarged; bb, f, more enlarged. {After 

 Chittenden, Bui. 19, N. S. Div. of Ent., U. S. Dept. of. Agric.) 



Larva. — Slender, white, with dusky markings; %6 i^ch long; lives 

 in the ground feeding on roots of various plants. 



Pw/>a.— White. 



Control. — Spray hop vines with whale-oil soap solution (i to 5); 

 collect by means of tarred shield and feather duster. 



LUCANID^ (STAG BEETLES) 



Stag Beetle {Lucanus dama Thunb.). Adult. — A large brown 

 lamellicorn beetle; male with large sickle-shaped mandibles and a 

 smooth broad head; the female with smaller mandibles and a narrower, 

 rough head. July-August. 



Eggs. — ^Large, globular, white; laid in crevices of the bark near the 

 roots. 



