﻿492. 

 LIVIA JUNCORUM. 



Order Homoptera. Fam. Psyllidse. 



Type of the Genus, Lhia Juncorum Lat. 



LiviA Lat., Curt. — Psylla Lat. — Diraphia III. 



Antennce porrected, as long as the head and inserted on each side, 

 on a shoulder before the eyes, 10-jointed, 2 basal joints robust, 

 the others slender and filiform, 1st joint cup-shaped, 2nd very 

 large, elongate-ovate, truncated at the apex, 3rd small cup- 

 shaped, the remainder more or less quadrate or ovate, the apical 

 joint slightly notched and furnished at the apex with 2 unequal 

 short divaricating bristles (4). 

 Rostrum a small thick conical lobe (1*2). 

 Head large and flat, deeply notched in front : eyes remote oval and 

 situated on each side near to the base. Ocelli 2 placed behind the 

 eyes (1, the head and base of antenncB in profile ; 1*, underside of 

 the same). Tliorax not broader than the head ; pro thorax forming 

 a transverse linear band ; scutellum small. Abdomen short, conical 

 and furnished ivith an Ovipositor in the female. Wings deflexed 

 when at rest, superior coriaceous, broad and ovate with 2 marginal 

 cells, a branched nervure near the middle, each branch furcate at 

 the margin, and 2 oblique nervures belotv (9) ; inferior smaller, very 

 transparent tvith a few very fine nervures (9*). Legs similar and 

 small, with a spine at the base of each of the posterior coxa ? thighs 

 compressed : tibiae subclavate, the hinder pair with a ring of short 

 spines at the apex : tarsi triarticulate, \st joint scarcely to be detected 

 except in the hinder feet, 2nd joint short nearly as long as the Srd 

 in the same pair : Claws minute (Gf, hind leg with a portion of the 

 postpectus attached to show the spine). 

 Larvae very fiat and elliptical, with antenna: and 6 feet. 

 Pupse similar to the larvce, with rudimentary elytra. — Lat. Hist, Nat. 

 des Four. pi. 12. f. 3. B. 



Juncorum Lat. — Curt. Guide, Gen. 1049. 1. 



Lurid ochre, finely rugose, 3 basal joints of antennae red the re- 

 mainder whitish, excepting the 2 apical joints which are black, 

 head red excepting a stripe down the crown, central part be- 

 neath black, leaving the apex of the clypeus and the base of 

 the Labrum ochreous : thorax red, the segments margined with 

 greenish ochre : postscutellum black, sides scarlet : superior 

 wings palest towards the costa; inferior colourless. 

 In the Author's and other Cabinets. 



This singular little insect is nearest related to Psylla ; but the 

 form of the head, the prothorax, and antennas, will show that 

 it was necessary to separate it from that group. 



