1912] Patch— PsijUidae: Livia 7 



LITERATURE. 



1879 Thomas, C, Third Report (Illinois Eighth) p. 14. Description after Fitch. 



On Sweet Flag, Acorvs calamus. 

 1890 Provancher, L., Faune Entomolog. du Canada et partic. de la prov. de Quebec. 



Hemipteres. p. 307. (Livia bifasciafa new species.) 

 1895 Mally, C. W., Proceedings Iowa Academy of Science for 1894, p. 153. Listed 



for Ames, Iowa. 

 1910 Smith, J. B., Insects of New Jersey, p. 108. Listed. 



Livia vernalis Fitch. 



Thomas (1879) describes this species as follows: — 



" Diraphia vernalis, Fitch. The Vernal Diraphia or Jumping 

 Plant-louse. 



"Found upon the leaves of the pine during the greater part of 

 the year, puncturing them and sucking their juices. They are of 

 an orange-yellow or bright rust-red color, about (.15) one-seventh 

 of an inch in length, with a square-flattened head, concave on its 

 upper side, with a slight, impressed line along the middle of the 

 front. The antennae short and thread like, about as long as the 

 head; their basal joints largest, and forming one-fourth of their 

 entire length; the forewings thick and leathery, feebly transparent, 

 dull, pale, brownish yellow; the breast coal-black and legs pale." 



The Colorado specimens differ somewhat from those from Con- 

 necticut, the emarginate projections of the front of the head being 

 smaller in the former and the second antennal joint being larger. 

 These are both present in collections determined as vernalis by good 

 authorities. In the absence of biological data it is perhaps best 

 to indicate the Colorado material as variety a. for the present. 



Livia saltatrix Provancher (1890) is possibly this species. 



The nymph of this species has not yet been recorded. 



Figs. 2, 5, and 9, illustrate wing, head, and caudal segment of 

 variety a. Fig. 4 pictures the head of a Connecticut specimen. 

 Fig. 10 pictures the cauda of Lot 1339 Sub 59. 



Lot 1339 Sub 59. One male lent by Cornell University with data 

 "Livia vernalis Fitch. Ag. Coll. Mich. 205. Cornell U. Lot 157 

 Sub. 38. Received by exchange from Carl F. Baker." 



Lot 1347 Sub 27. One female lent by Dr. C. Gordon Hewitt 

 with data "Aylmer, Que, 31-V-1903. W. Metcalfe." 



Lot 1348 Sub 2. Two females lent by Prof. C. P. Gillette, one 



