INSECTS AFFKCTINC. PARK ANT) WOODLAND TItEES 535 



Food habits. This sp(;cies seems to have a preference for oaks, though 

 it is recorded as fcedin<;- on most deciduous trees. 



Remedies. Hein'4 a leaf feeder it should 1)e readily controlletl by 

 thorouj>-h sprayinj^^ with an arsenical poison whenever such is advisable. 



Bibliography 

 1890 Packard, A. S. I'. S. Ent. Com. 5th Rcpt, ].. ;,i 7-21 



Striped hickory caterpillar 

 /)a/(i//(i aiigiis/i (jr. & Rb. 

 Clusters of black, ycllow-stripcil caterpillars about 2 inclu-s long, occur on liickory, 

 walnut and birch. 



This species may be distin-uisheil from the- more familiar yellow- 

 necked apple worm. D. ministra Walk., by the prothoracic shield being 

 entirely black. It has very similar habits, though its list of food plants is 

 more restricted. The parent insect is marked almost exactK' like I), 

 ministra Walk., differing in the dark smoky brown color throughout. 



Yellow-necked apple worm 

 Datana miuistvcx Walk. 



Clusters of black, yellow-necked, yellow-striped caterpillars nearly 2 inches long, 

 occur in midsummer on the twigs of a variety of trees. 



This species is well known in economic entomology as the yellow- 

 necked apple worm because of its depredations on this valuable fruit tree. 

 It is however a general feeder, having been recorded on apple, jiear, cherry, 

 quince, linden, walnut, hickory, oak of various species, chestnut, beech, 

 hazel, hornbeam, birch, locust and sumac. 



Description. The full grown caterpillars are black, about 2 inches in 

 length with a )ellow thoracic shield and a series of four lilack lines on each 

 side of the body. This species and its associates feed in clusters and have 

 the peculiar habit of elevating both extremities when disturbed. 



The adult insect is a reddish brown moth with a wing spread of about 

 I 3+ inches. The fore wings are crossed by a scries of four or five ol)lique 



