21 



Fig. 12.— Currant Stem-Girdler. 

 a. Female; b, lateral view of male abdomen; c, lateral view of feiuale abdomen; 

 d, apex of anterior tibia of the female, showing serrated tibial spine, all enlarged. 

 (From Insect Life.) 



The insect is au Hymenopteron belonging to the family Uroceridae. 

 The adult is a slender-bodied fly. The female (Fig. 1^, a) measures 

 a little less than one-half inch in length and a little more than three- 

 quarters of an inch across its outspread wings. Its antennae, head,, 

 and thorax are black. The fore and middle pairs of legs are reddish- 

 yellow at the base and dark brown or black on the outer half. Both 

 pairs of wings are transparent and iridescent, and the veins, with 

 the exception of the one along the front margin of the fore wings 

 which is yellowish, are dark brown. The stigma (located on the 

 front margin of the fore wing beyond the middle) is dark smoky 

 brown. The abdomen (Fig. 12, c) is blackish at the base and on the 

 outer half, with the intervening part reddish-yellow. At the end is 

 a thick, blunt, black spine, projecting beneath which the saw-like 

 ovipositor may generally be seen. The male is a trifle smaller than 

 the female and differs slightly from it in its colors and markings, but 

 the only conspicuous difference is in the abdomen (Fig. 12, b) which, 

 with the exception of the black base and a row of dusky oval spots on 

 the sides, is all reddish-yellow. 



