328 RErcmT of the Department of Entomology of the 



black at the apical division; antennae, with a black ring before the tip of segment I and 

 at the base of article II; discoidal cell of corium often obsolete and the median spot 

 brown; posterior femora with many black spots. Length 2f mm." 



Paracalocoris colon Say. — The nymphs of this species were found 

 feeding on succulent sprouts of Bartlett pears at Lockport. Collec- 

 tions of nymphs of the first two instars were made on May 14, 1912, 

 at which time they were causing quite a little injury to the leaves. 

 These nymphs were kept in cages on pear foliage and fruits until 

 maturity, and their work on both proved to be quite similar to that 

 of Lygus invitus. The effect of their early injuries on the mature 

 fruit was not ascertained. Brief descriptions of nymphal stages 

 and adult of this insect are given below: 



First Instar. — Color, deep red, somewhat translucent. The head is wedge-shaped, 

 eyes large, thorax narrower than head, twice as long as wide, abdomen pear-shaped, 

 flattened caudad. Length 1 mm., width .5 mm. 



Second Instar. — Color darker red than in the preceding stage. Head and thorax 

 dark red, abdomen lighter, translucent; median of thorax white; first abdominal seg- 

 ment ivory white; antennae, with terminal joint suffused at tip for two-fifths of its 

 length, remainder ivory white; legs, reddish brown, translucent, white at tips of joints 

 and tarsi; venter of abdomen red. In general shape this form is like the preceding 

 stage. 



Third Instar. — There is no change in the third stage except that the abdomen is 

 mere translucent. 



Fourth Instar. — Abdomen and median of thorax lighter, almost greenish in color; 

 greenish coloration noticeable to a less degree on the median of the thorax; head and 

 eyes dark brown; basal article, anterior two-thirds of article II and anterior half of 

 article III deeply colored with reddish brown; femora deeply colored except near the 

 bases, which are lighter; tibiae banded with the same color, the bands on the posterior 

 pair being the wider. 



The body is long, narrow; head acutely triangular and about twice the length of the 

 thorax. Prothorax rectangular, sides strongly rounded. Mesothorax and meta- 

 thorax of almost equal length with the wing pads produced strongly caudad. Abdomen 

 long, pear-shaped. Body and appendages very hairy; most noticeable on the abdomen 

 where the deep brownish color of the hairs contrasts strongly with the lighter colora- 

 tion of the body. Length 3.99 mm., width 1.26 mm. 



Fifth Instar. — The last stage nymph does not materially differ from the preceding 

 stage except in length and size of wing pads. 



Adult. — "Grayish; thorax with two black dots. Body brownish gray, with numer- 

 ous short, yellowish hairs; antennae, basal joint robust, narrowed at base, two-thirds 

 the length of the second; second joint very slightly thicker at the tip, whitish in the 

 middle and for a short space at the base, and blackish at tip, third and fourth joints as 

 long as the first, whitish; thorax with a black orbicular dot each side of the middle; 

 hemelytra with from three to five obsolete brownish spots on the corium and two or 

 three on the membrane; beneath dusky, varied with yellowish lineations on each side 

 of the venter; feet yellowish, thigh dusky at tip; tibia with about two dusky annula- 

 tions. Length over one-fourth of an inch." 26 



This species, like many other capsids, is subject to variation. It is sometimes 

 yellowish, variegated with brownish, but the thoracic orbicular spots and the annula- 

 tions of the second joint of the antennae distinguish it. 



26 Ent. N. Am. 1:345. 1891. Le Conte ed. 



