132 



PSYCHE, 



[November — December iSSS. 



The depth of colorhig of the body 

 and members varies considerably with 

 the age of the sjDecimen. 



Tliis form is developed along with 

 the oviparous female on the leaves of 

 various oaks. Late in October 18S7, 

 I examined great numbers of colo- 

 nies and frequently savv^ the pupae 

 of this winged form on the leaves ; and 

 in several instances I saw the winged 

 adults emerging from the pupa-skin. 



Ov [par Otis female. 



Length of body 2.00 mm. 



Width of body (above anterior coxae)o.50 mm. 

 " " " (above middle coxae) 0.74 mm. 

 " " " (across middle of ab- 

 domen) i.oomm. 



Antennae 1.20 mm. 



Cornicles 0.05 mm. 



Light yellow ; dorsum with four longi- 

 tudinal rows of mostly subquadrangular 

 spots of a yellowish-brown color, two 

 of the rows being on the lateral margins, 

 and the other two on each side the 

 meson. On the abdomen are various 

 smaller spots of the same color. Under 

 surface immaculate. Body provided 

 with numerous rather long brown hairs, 

 having slightly enlarged truncate tips, 

 distribution on dorsum corresponding 

 to that of the colored spots. Head and 

 prothorax subquadrangular ; former 

 with a small tubercle surmounted by a 

 hair in front on each side of the meson. 

 At posterior margin of prothorax body 

 suddenly widens and expands to middle 

 of abdomen, when it begins to contract 

 posteriorly and ends in a long tapering 

 ovipositor. Cornicles yellow, short, 

 large. Eyes yellow, with a red spot on 



their lower surface. Antennae slender, 

 tapering, yellowish-brown with dusky 

 articulations and tips. Joints I and II 

 as usual ; III very long, equal to IV -f- 

 V ; IV and V subequal ; VI short, half 

 as long as V ; VII also short, slightly 

 longer than VI. Legs robust, dusky 

 yellowish-brown, with man}- short hairs. 

 Tarsi black. Rostrum short, reaching 

 just back of anterior coxae, yellow, 

 with black tips. 



Described from three living speci- 

 mens from ^uercus ?nac?'ocarpa^ 27 

 October 1887. 



The depth of coloring of this form 

 varies much. Many specimens have a 

 distinct reddish tinge, others are more 

 or less brownish, and still others (ap- 

 parently those which have recently 

 passed the last moult) are green. The 

 depth of color of the members varies 

 with that of the body — those specimens 

 which are green having legs and an- 

 tennae also more or less green, those 

 which are brown having legs and an- 

 tennae brownish, etc. 



Elongate, subcylindrical ; 0.47 mm. 

 long, 0.17 mm. wide. Green or yellow- 

 ish when first deposited, but becoming 

 darker on exposure. Deposited by the 

 side of the midrib or secondary vein on 

 the under surface of the leaf, stuck in 

 among the long leaf hairs. 



Described from two specimens taken 

 on leaf of ^tierctis macj'ocarpa^ 28 

 October 1S87. 



The long ovipositor of the female no 

 doubt aids greatly in inserting the &g^ 

 in its proper position close to the midrib 



