230 



[NSECTS I.\FKST1M! THE STRAWBERRY. 



CHAPTER CXLV. 



The Strawberry Worm. 

 ( Einphi/tus marulatiis — Norton.) 



Order, Hymexopteha ; Fiunilv, Tknthredixid.t:. 



Fig. 218. 



[Feeding upon the leaves of strawlxriy i)lants ; a naked 

 dirty-yellowish worm, wliich is provided with twenty-two legs.] 

 Tlie eggs (Fig. 218, 0.) from which these worms hateh are 

 deposited in the stems of the plants; this operation is per- 

 formed Ijy the female fly by means of a saw-like instrument 

 witli which all the flies belonging to this family are provided. 

 When fully grown the worms (Fig. 218, 4,) measures about 

 six lines in length ; they then enter the earth and form small 

 cells in which to undergo their transformations. Two broods 

 are usually produced in one season, and the last brood remain 

 in their cells unchanged until the following Spring. 



Fig. 218.— Straw- 

 berry Worm, Pupa, 

 Fl}', etc. ; i, the 

 [lUpa. enlarged, ven- 

 tral view ; ~, the 

 same, side view — 

 rolor, greenish- 

 white ; -:/, the My, 

 enlarged (the wings 

 on one side not rep- 

 resented) — c o 1 o rs. 

 li 1 a <• k and dirty 

 wliite ; .V, her an. 

 ti'inue. greatly en- 

 larged; o^ the fly with its wings closed; ^A the worm at rest; 

 .^, the same extended — color, dirty yellow: 7, the cocoon ; 9, 

 the egg, magnified — color, white. 



The perfect flies (Fig. 218, 3 and •:>,) are deep black, with 

 two rows of dirty white spots on t»he abdomen; the wings are 



