SUBFAMILY I. — PENTATOMIN^. 165 



111 (182). Banasa dimidiata (Say), 1831, 7; I, 318. • - ; " " 



Oblong-oval, subdepressed above, convex beneath. Head, apical por- 

 tion of pronotum and usually the greater part of scutellum and con- 

 nexivum greenish-yellow or olivaceous; basal portion of pronotum, 

 apical third of scutellum and elytra clear green or reddish-brown, but 

 always darker than the parts first mentioned; antennae green or reddish- 

 green at base, the last two joints fuscous; under surface greenish-yellow; 

 tibia? and beak mostly green, tarsi fuscous. Head as broad across the 

 eyes as long; cheeks flat, coarsely and densely confluently punctate; first 

 and second joints of antennae subequal, each about half the length of 

 third ; beak reaching base of second ventral. Pronotum with front por- 

 tion strongly declivent, its disk finely, sparsely and unevenly punctate; 

 hind portion of pronotum and base of scutellum more coarsely and 

 rugosely punctate. Elytra rather coarsely, evenly and shallowly punc- 

 tate. Under surface very finely and sparsely punctate, the end of each 

 ventral with its hind angle ending in a minute spine. Genital plate of 

 male broadly and shallowly concave. Length, 8.5 — 11 mm.; width, 

 4.8 — 6 mm. 



Frequent in the northern half of Indiana, May 21 — July 21; 

 not taken in the southern counties. Occurs mainly on foliage 

 of hazel, chokeberry and other shrubs along the margins of 

 swales and tamarack swamps. Ranges from Quebec and New 

 England west to the Pacific, and south to northern Florida, 

 Oklahoma and Texas. Say's types were taken from Georgia 

 and Florida, and from the latter State it has since been 

 definitely recorded only from Walton and Leon counties, near 

 the northern border. But little has been written concerning its 

 habits. Van Duzee states that about Buffalo, N. Y., it is "rare 

 in August and September on birch and other trees." Stoner 

 reports it as rare in Iowa "in woodland on deciduous trees." 

 It is nowhere reported as common or injurious. In color it 

 varies exceedingly, but as in lenticularis and calva, the front half 

 of pronotum is always paler than the hind one. In two speci- 

 mens from Vermilion Co., Ind., the entire upper surface, ex- 

 cept head, front of pronotum and tip of scutellum, is a wine red. 



112 (185). Banasa lenticularis Uhler, 1894a, 174. 



Form and size of dimidiata. Color paler, the head, front half of 

 pronotum, basal two-thirds of scutellum and elytra usually dull white, 

 the remainder of upper surface green; antennae greenish throughout; 

 under surface greenish-yellow, the legs in great part pale green. Struc- 

 ture much as in dimidiata, but the sculpture of upper surface very dif- 

 ferent, the head almost impunctate, but with a few transverse grooves; 

 entire disk of pronotum and scutellum very sparsely and unevenly punc- 



