INSECT PESTS 237 



described in 1840 by Boheman as Naupactus leucoloma. In 1939, 

 Buchanan (20) placed the insect in the genus Pantomorus and described 

 it from specimens collected at Florala, Alabama. Very brief descriptions 

 of the egg and larva have been made by several investigators. 



Egg 



The egg is approximately 0.9 mm. long and 0.8 mm. wide, and is oval in shape. 

 The color when freshly deposited is milky white; the color changes to dull light 

 yellow after 4 or 5 days. 



The eggs are deposited in masses, ranging in number from a few to as high 

 as 60 or more, but the usual number is from 15 to 25. The individual eggs and 

 masses are covered with a gelatinous substance which makes them adhere to one 

 another and to objects or the soil. — Young et al. (170). 



Detailed technical descriptions of the larva are not available to the 

 writer. A very brief description by Young et al. (170) follows: 

 Larva 



The full-grown larva averages approximately one-half inch in length. The body 

 is yellowish white, fleshy, more or less curved, legless, and sparsely covered with 

 hair. It consists of 12 much-folded segments, which are interrupted by two sub- 

 lateral longitudinal grooves running the length of the body. The dorsal portions of 

 the segments are bulging; the ventral portions are flat. On the sides, above the 

 longitudinal separating grooves, small spiracles are present on all segments except 

 the second, third, and twelfth (last). 



Anderson (2) has published a key with drawings for separating 

 Naupactus (Pantomorus) leucoloma from related species. This key is 

 reproduced below : 



1. With a group of several spinules dorsally on stipes at proximal end of the 



longitudinal row of strong setae of maxillary mala 2 



Without spinules at proximal end of the longitudinal row of strong setae of 

 maxillary mala Pantomorus godmani (Cr.) 



2. Eusternum of mesothorax with minute spinules^^ between and behind the two 



sternal setae. Scutellar setae I, II, and IV on the first four abdominal seg- 

 ments slender and awl-shaped {^= subulate) Artijms texamis Pierce 



Eusternum of mesothorax without minute spinules. i^ Scutellar setae I, 

 II, and IV on the first four abdominal segments stout and spindle- 

 shaped (= fusiform) i 3 



3. Margin of posterior third of head capsule broadly arched. Paired epipharyngeal 



scleroma distinctly U-shaped, basal part with distinct anterior margin which 

 forms a clear-cut angle with exterior margin of inner arm, and with inner 

 arm about twice as long as antero-poster^br extent of base .. Naupactus, n. sp. 

 Margin of posterior third of head cai|pule ogival. Paired epipharyngeal 

 sclerome not distinctly U-shaped, basal p^rt with obliterated anterior margin, 

 exterior margin of inner arm roundly connected with interior margin of 



^2 The presence or absence of these spinules can be ascertained readily on specimens treated 

 with caustic potash and on uncleared specimens when properly lighted, by studying them with a 

 magnification of about 75 diameters. i 



