252 OHIO EXPERIMENT STATION: BULLETIN 332 



Distribution. — The brown anisota is found most frequently in 

 this state in woodlands in the southern portion. From the reports 

 of others its range may be given roughly as occupying the greater 

 part of the United States east of the Mississippi River and westward 

 to include parts of Missouri and Minnesota. 



Natural enemies. — A Tachina fly and Limneria fugiUva Say 

 are parasitic upon the caterpillars. 



Control. — The writer has never seen an outbreak where control 

 measures were necessary. Doubtless an application of arsenicals 

 would be effective if the occasion demanded their use. 



THE GREEN-STRIPED MAPLE WORM 



(Anisota ruhicunda Fabr.) 



Description. — The general appearance of the larva of the green- 

 striped maple worm may be seen in Plate XXXVII, Fig. 4. The 

 full grown caterpillar is a little over II/2 inches in length. Its 

 general color is a pale yellowish-green, striped with darker green. 

 The head is cherry red. As will be seen from the illustrations the 

 body is generously ornamented with spines which are black, and two 

 , long, curved spine-like processes extend backwards from the second 

 thoracic segment. 



The moth is rose-colored, the fore wings being marked with a 

 broad, pale, yellow cross-band. It measures about 2 inches across 

 its expanded wings. 



Life history and habits. — In Ohio the green-striped maple worai 

 is single brooded, the adults being present in greatest numbers in 

 June and the larvae a month or so later. In the central West, the 

 insect is two-brooded, the larvae appearing in June and again in 

 September. 



Nature of work. — Occasionally the green-striped oak worm is 

 sufficiently numerous to cause defoliation although this rarely 

 occurs in Ohio. As a rule the larvae feed singly and because of 

 their close color resemblance are rarely seen upon the foliage but 

 attract attention when they fall to the sidewalk or lawn. 



Food plants. — ^Various maples and especially the swamp or red 

 maple are preferred to other hosts, although the insect has been 

 reported upon oak. 



Distribution. — The green-striped oak worm occurs throughout 

 Ohio and in many states to the east and west. It is particularly 

 abundant in Missouri and Kansas. 



Natural enemies. — Tachina bifasciata Fabr. and an Ichneumon 

 fly have been reported as parasitic on this species. 



Control. — Spraying with arsenicals is an effective control. 



