58 OHIO BIOLOGICAL vSURVEY 



Didea fasciata Loew 



(Plate I, Figs. i-8 and Plate VI, Fig. 17.) 



See the Ohio Naturalist Vol. XI, No. 7, pp. 337-341, May 191 1, and 



Vol. XIII, No. 5, p. 90, March 1913. 



Egg — Length 1.3 to 1.7 mm., diameter 0.4 to 0.6 mm. Sculpturing of the cho- 

 rion very characteristic — the principal bodies of it have a secondary reticulate ornamen- 

 tation of their own (Plate VI, Fig. 17). Found on sycamores, September 29 to Octo- 

 ber 27, glued to the bark on the under side of horizontal limbs. 



Young larvae similar to mature ones. Mature larva — length 12 to 15 mm., width 

 5 to 6 mm., testaceous brown. Segmental bristles crown the summits of prominent, 

 conical elevations beset with the short radiating black bristles which cover the integu- 

 ment generally. Inter-spiracular ornamentation consists of a small number of 

 upri>;ht, irregular, lamellae-like ridges. Dorsal blood vessel not prominent. 



Found pre5dng only upon Lotigistigma caryae on .sycamore and bass- 

 wood. 



Pupa — Length 9.5 to 10 mm., width 4.5 to 5 mm., height about 4.5 mm. Color 

 Roman sepia. The shining brown color, vestiture as described for the larva, and the 

 characteristics of the posterior respiratory appendage, should easily distinguish this 

 species. Duration in pupal stage (indoors) 20 days. 



Adult — Length 1 1 to 15 mm. Third vein of wing deeply curved near the middle 

 into the first posterior cell. First yellow abdominal cross-band interrupted, reaching 

 the margin. Second and third bands not reaching the margin. 



Allograpta obliqua (Say) 



(Plate V, Fig. 61-70.) 



Seethe Ohio Naturalist Yo\. XII, No. 8, pp. 533-537, Jtiue 1912. 



Egg — Elongate oviod. Length about 0.8 mm., diameter 0.3 mm., (Figs. 61-62). 

 Color chalk-white, with microscopic sculpturing. Oviposilion noted the middle of 

 May and the middle of June on persimmon {Diospyros virginiana L.) and on curled 

 dock {Rume.v crispus L.). Nearly 100 eggs deposited by a female. Duration in 

 egg stage (indoors) 2.5 to 3.5 days. 



Mature larva — Length about 8 mm., width about 2 mm. Color leaf-green with 

 two prominent, longtitudinal, white stripes dorsally. No body vestiture, except the 

 segmental bristles. Outer pair of mouth-hooklets present. Posterior respiratory 

 appendage prominent, 0.5 mm. long, 0.125 rnm. broad. Inter-spiracular spurs 

 short, continued down the sides of the tube as more or less evident ridges. 



Predaceotis on a species of Aleyrodidae on persimmon in June; on 

 Aphis brassicae September, October; on Aphis riimicis on Runiex crispus 

 in June. 



Puparium — Length 5.25 mm., width 2.5 mm., height 2.3 mm. Posterior elevation 

 very gradual. Color changes from that of the larva to that of the adult as the meta- 

 morphosis goes on within. Duration in pupal stage (indoors) 3.5 to 5.5 daj'S in June, 

 as long as 10 days in Autumn. Found on parts of the larval host-plant, June to 

 Octol)er. 



