BULLETIN 195. 



CALIFORNIA GRAPE ROOT-WORM. 



ish spot or ring and are easily visible. The proximal joint of the labial 

 palpus is as long as the other four. The antennae are short and incon- 

 spicuous, consisting 

 of three joints and 

 ending in a couple of 

 peg-like processes and 

 two small spines. The 

 legs are covered with 

 hairs or setaa similar 

 to those on the body. 

 The claws are long, 

 slightly curved, and 

 dark brown in color. 



FIG. 3. Larva. 



The Pupa. The 

 pupa (Figs. 4 and 5) 

 is about one fourth of an inch long and about the same length across the 

 extended wing pads. The color is pure white, the hairs or spines alone 

 being colored brown. On the head near the prothorax, extending trans- 

 versely, is a row of four spines, and behind this row are four spines, 

 slightly smaller, arranged in the form of a quadrangle. On the dorsal 



side of the abdomen 

 are transverse rows 

 of delicate hairs. The 

 anterior and hind 

 femora are armed 

 with a stout spine. 

 On the hind femora 

 there are also two 

 stout bristles. The 

 anal hooks are very 

 stout and broad at 

 the base, ending in a 

 sharp spine, curved 

 upward and tipped 

 with black. Just 

 anterior to the anal 

 hooks on the dorsal 

 side is a row of four 

 short blunt spine- 

 like tubercles, each 

 ending in a bristle. On the next anterior segment is a row or six spines. 

 These are longer and stouter than those on the other segment, but end 

 in a similar sharp bristle. There are two pairs arranged on either side 



FIG. 4. Pupa. Dorsal view. 



