148 INSECTS ATTACKING WEEDS IN MINNESOTA. 



The Sunflower Leaf-Rolier ( Tricluitaphc iiiscnala, W'al.i. 



This war}-, active caterpillar was observed to roll the termi'ial 

 lea^•es together in a conspicuous manner on June 29. It eats large 

 holes in the leaf or sometimes rolls a part of the leaf over, feeding 

 from the edges. Adult moths emerged on |une 2S and |ulv 3. 



Pupa. — Length, 7 mm. by 2 mm. wide. General color, black. 

 The (U»rsum of tlie posterior border of the first three abdominal 

 segments with a ])and of golden hairs divided on the middle line; 

 the first smaller, the third band measuring about 1 mm. wide. Just 

 back of each band is a narrower, sparer band of similar hairs, bord- 

 ered posteriorly !)}■ an orange-colored ])and. Idle 4t'n, 5th and Oth 

 abdominal segments with a brownish band on their posterior border. 

 The last abdominal segment clothed with numerous long hairs on 

 the dorsum and at the ti]). J lead is also sparsely clothed with 

 long hairs. 



Larva. — Length, about 10.,^ nun. Head and shield black; first 

 two thoracic segments mostly brownish. Two lateral and one dor- 

 sal stripes present, beginning on the second segment. Legs dark 

 on the outer side. Hooks of prolegs arranged in two rows with 

 al^out 8 hooks in each row. 



WHITE SAGE (Artemisia Indoviciaua Nutt.j Lisects. 

 The Wormwood Leaf Tyer ' Ilucosuia (Thimiia) ai ti)iiisiaiia W'als.) 



ddie terminal leaves were commonly found tied on ]\hi\' 30 by 

 a wdiitish cater])ilhn-. I'upation took place June 30, A\h.ile one adult 

 emerged August 6. In the breeding cage, the larvae s])un tludr 

 silken cocoons on the stem near the base of the ])lant. 



Larva. — Length, aliout 11 mm. General color, dirty white, 

 somewhat darker above. Head yellowish. Legs darker on outer 

 surface. ( )n the center of the dorsum is a narrow pale band on 

 each side of which is a broader one. The spiracles are conspicu- 

 onsh' black. I'rolegs with twenty hooks arranged in circle. 



THE SOrTHER.XW'OOD I Artimisia abrolaiiinii L. ) Insects. 



The Wormwood Web Worm ( ii norinidsclu ma ai tiinisiclla Kearf. j. 



These small Tineid lar\ ae make consi)icuous webs among the 

 terminal leaves and lateral shoots during the latter ])art of June. 

 The grayish moths emerged on July 24, the pu])al stage lacing al)out 

 three weeks. 



