May, 1918] Parasites of Lcaf-IIoppers 269 



propodcuni roughened and denseh- and coarsely punelale, no area 

 separated by raised lines. Wings hyaline, ciliated, clothed with short 

 hairs. Venation distinct, pterostigma lanceolate. Radius curved prox- 

 imally distinctly longer than distally but not reaching ti]j, sub-discoidal 

 vein tincly distinct and extending clear to margin of wing, cubital vein 

 visible short distance from wing margin. Legs long, fore pair testaceous, 

 last two pairs fuscous. Abdomen same length as thorax, black, ])ilose, 

 de])ressed dorso-ventrally. Length, 2.4 mm. 



Described from one male and three females. Columbus, 

 Ohio. Bred from Deltocephahis sayi adults. Types deposited 

 in Entomological Museum, Ohio State University. Paratypes 

 in writer's collection. 



10. G. ombrodes (Perkins). 



Neogonalopus ombrodes Perkins, Rep. Exp. Sta. Hawaii, Ent. v. 1, p. 42 (9), 



1905. 

 Gonatopus ombrodes Perkins, Rep. Exp. Sta. Hawaii, Ent. Bull. II, p. 13, 1912. 



Female: Black; vertex of head, and pronotum often piceous or 

 brown, face and occiput yellow or ferruginous; basal two or three 

 antennal joints pale; legs pale yellow brown or testaceous. Head and 

 pronotum minutely punctate, propodeum dull and very densely sculp- 

 tured. Abdomen smooth and glabrous. Length o-3.4 mm. 



Columbus, Ohio. Bred from Deltocephalus sp.? 



11. G. mimus (Perkins). 



Neogonalopus mimus Perkins, Rep. Exp. Sta. Hawaii, Ent. v. 2, Bull. 4, p. 33 



(9), 1907. 

 Gonatopus mimus Perkins, Rep. Exp. Sta. Hawaii, Ent. Bull. 11, p. 13, 1912. 



Female: Ferruginous or testaceous, abdominal petiole blacky 

 abdomen often darker than the thorax or brown; first two or three 

 antennal joints testaceous, rest black. Head in front of ocelli smooth, 

 behind dull with minute sculpture, antennas short and stout. Chela 

 with fifth joint having lamella? not reaching to articular cavity but 

 replaced towards tip by bristles. Length, 2.5-3 mm. 



Nogales, Arizona. Bred from jassid sp. 



12. G. obscurissimus (Perkins). 



Neogonalopus obscurissimus Perkins, Rep. Exp. Sta. Hawaii, Ent. v. 1, p. 43 



(9). 1905. 

 Gonatopus obscurissimus Perkins, Rep. Exp. Sta. Hawaii, Ent. Bull. 11, p. 



13, 1912. 



Female: Black, pronotum, mesonotum, and some of leg joints dark 

 brown or piceous. Basal 2-3 antennal joints, tarsi and part of hind 

 tibiae and femora pale, yellow, or testaceous. Head and pronotum 

 shining, latter faintly sculptured; propodeum with minute dense surface 

 sculpture, posteriorly finely transversely rugose. Length, 3 mm. 



Columbus, Ohio. Bred from Deltocephalus spp. 



