JOURNAL 



JDFfo J9opk €fnkrao!ogirflI %nntty. 



Vol. VI. SEPTEMBER, 1898. No. 3. 



THE LIFE HISTORIES OF THE NEW YORK SLUG- 

 CATERPILLARS— XVI, WITH CERTAIN 

 ADDITIONS AND CORRECTIONS. 



PLATE VIII. 



By Harrison G. Dyar, A.M., Ph.D. 



Tortricidia testacea Packard. 

 1864 — Tortricidia testacea Packard, Proc. Ent. Soc. Phil, III, 337. 

 1882 — " " Grote, Check List, Bombyces, no. 195. 



1891 — " " Smith, List. Lep. no. 121 1. 



1892 — " " Kirby, Cat. Lep. Het. I, 551. 



1894 — « " Neumoegem & Dyar, Journ. N. Y. Ent. Soc. II, 



Special Structural Characters. 



Dorsal space moderately broad, narrowing only a little toward the 

 extremities, arched ; lateral space broad, oblique, concave ; subventral 

 space, small, retracted. Ridges slightly prominent, never tubercular, 

 furnished with single or furcate swollen-tipped setae in stage I, afterward 

 with rudimentary setae which nearly disappear at maturity. Outline 

 from dorsal aspect elliptical, notched at the anterior part of joint 13 to 

 form a short quadrate tail. Skin covered with close, appressed, rather 

 large, clear granules, which appear immediately after first molt, a little 

 papillose on the margins, becoming smoother and increasing in number 

 at subsequent molts. Depressed spaces large, well developed, deep, 

 with sharp sides, the bottom flat and finely granulated. The spaces 

 (1) to (8) are present, dividing the surface into a series of raised lat- 

 ticed ridges. 



The larva is throughout very smooth. The coloration is green with 

 a large red mark appearing in the middle of the back, finally reaching 

 head and tail and the middle of the sides. 



