MAPLE BUGS. 419 



tensiv^e article by her in the North American Entomologist, vol. 1, p. 

 73 (April, 1880). She also notes its occurrence at Lancaster, Pa., 

 where it has been collected bj^ Dr. Rathvon. The following description 

 of the species is compiled from Signoret and Miss Smith :" 



Adult female. — Color, bright yellow (Smith), reddish yellow (Signoret). Length 

 from 4'""" to 5™'". Shape, rounded oval, as large behind as in front. The dorsal in- 

 tegument is smooth, with the divisions into segments obscure ; it is filled with spin- 

 nerets in the form of pores, and is also furnished with many delicJato hairs, especially 

 numerous upon the median part of each segment and at the extremity of the abdomen. 

 The autenupe are long and delicate, 9-joiuted, second and third longest, the others 

 diminishing in size and length except joint 9, which is longer than the preceding 

 joint and acuminate at tip. The under lip is long, acuminate at tip, which is fur- 

 nished with many hairs. The tibise are nearly three times as long as the tarsi. The 

 tarsal claws are rather short and toothed on their inner side, sometimes truncate at 

 tip; there are only two digitules, those of the claw, the others being only simple 

 hairs. The anal genital ring is large, punctated, and supports six quite long hairs. 



The egg is light yellow in color when first deposited, later becoming yellow brown. 

 Dim^ensious given by Miss Smith, 5™™ to 6™"' long, and 3""" to 4™°> wide ; probably 

 €.5""" to 0.6™™ by 0.3™™ to 0.4™™. 



The young larva. — Color, reddish yellow; shape, elongated oval, narrow behind. 

 Antennae 6-jointed, joint 6 as long as the three preceding joints together. The lower 

 lip is 2-jointed. The body is surrounded by a series of spines and upon the disk of 

 each segment is a series of eight tubercular spinnerets, with which alternate short 

 hairs; in front of the head between the eyes are several longer hairs ; the anal ring 

 with six hairs ; the lateral lobes large, each with one very long hair and several 

 shorter ones. The tarsi a third longer than tne tibise. 



The male larva is red and has 7-jointed antennae. 



The male. — Color, red; antennae, 10-jointed; joint 1 short and stout; joint 2 twice 

 as long as 1 ; joint 3 three times as long as 1 ; joints 4 to 10 similar in size and form, 

 decreasing slightly in length. Legs hairy ; tarsi one-half as long as tibiae. Anal 

 filaments longer than all the rest of the insect. (Comstock Agr. Eept., 1880.) 



60. Lygus invitus Say. 

 Order Hemiptera; family Capsid.e. 



The following account of this bug is copied from Professor Forbes's 

 Third Report on the Injurious Insects of Illinois : 



Brief mention may properly here be made of a species whose injuries to vegetation 

 have not hitherto been serious, as far as known, but which deserves attention as the 

 near relative of one of the most injurious horticultural species (the tarnished plant 

 bug), and also because, from its own abundance and habits, it may well become the 

 author of serious mischief. 



Although not agreeing precisely with any descriptions of Capsidae accessible to me, 

 I have little doubt, after careful study of about forty specimens collected in June, 

 that the species is that described by Say as Capsus invitus. It dilfers materially from 

 Say's original descriptions, but corresponds closely in most particulars with the de- 

 scription of a type specimen of Say's, published by Uhler in his notes on the Heter- 

 optera in the collection of Dr. Harris,* varying from that only in some color charac- 

 ters of little moment in so variable a genus. 



The following description is coudeused from that of Uhler, modified with respect 

 to color to conform to our own specimens. 



General color pale obscure yellow, varying to yellowish green. Antennae and 



"Proceedings of the Boston Society of Natural History, vol. xix, p. 407. 



