CAPE C(1D CRANBERRY INSECTS 



PART I— WORMS OR WORMLIKE FORMS ATTACKING THE 

 FOLIAGE, BUDS, FLOWERS OR FRUIT. 



This section einljraces a majority of the cranberry pests. The worms may 

 be classified as follows: 



Cl((^\-<ip'c((tion Table. 



^\'itll iimcli liair covering most of tiie liody hairy worms (p. 49). 



Without much hair 1 



1. Either legless or working only inside the berries — miscellaneous 



jiests (p. 54). 



W'itii legs and not confined to working in tiie fruit 2 



2. With tiie hal)it of sewing the leaves together with silk fireworms (p-5). 



Not sewing the lea\'es togetlier 3 



3. The hind half of the body with only four legs spanworms (p. 37). 



The hind half with more than four legs 4 



4. With a prominent sharp horn on the back near the hind end.apple sphinx^ 

 With no such horn... 5 



5. Green, without stripes along the sides cranberry sawfly (p. 66). 



Not green, or, if green, with noticeable side stripes cutworms (p. 21). 



FIREWORMS. 



These are relatively small worms and they wriggle vigorously when dis- 

 turbed, mcning forward or backw'ard with equal celerity. They sew together 

 with silk the leaves among which they feed and so form nests to protect 

 themselves from parasites and other foes. They usually begin this webbing- 

 soon after they hatch, by sewing together three or four leaves at the tip of a 

 single upright as shown in fig. 8. The later webbing varies somewhat but 

 usually draws several uprights together finally. The worms often injure the 

 foliage S( that it turns brown and looks as though a fire had burned the 

 vines — hence the name fireicorm. 



Four kinds of fireworms do material harm on Cape Cod bogs. They may 

 be disMnguished as follov.s: 



Table of ]Voriiis. 



Head black black-headed tireworm (p. 6) . 



Head not black 1 



1. Body with consjjicnious white spots along the l)ack and sides 



spotted fireworm (p. 19). 

 Body without such spots 2 



2. Body with dull reddish lines along the back and sides 



red-striped tireworm (p. 16). 

 Body pale yellowish, without reddish lines yellow-headed fireworm (p. 12). 



4. Sphinx gordius Cram. These caterpillars grow to be about two and a quarter inches 

 long. ,'\s they mature they are smooth and green, but sometimes strongly shaded with pink or 

 purple, with feven parallel stripes slanting downward forward on each side, each composed of a 

 red line bordered above with rather deep brown and below with white. They are ornamented 

 also with many minute brown circles. They mature in late July. August and September, and 

 cranberry pickers often find them in their scoops. They never do much harm. The gray moths 

 expand three inche.-i or more and are not uncommon on the bogs in late May and June. 



