192 GENUS GARGAPHIA 



to Arizona and inland to Missouri. Mr. McAtee states that 

 Ceanothus americanus is the most common food plant of this 

 species. It also feeds on beans to an economic extent. 



Gargaphia nigrinervis Sth\ 



1873. Stai, Enum. Hemip., iii, p. 12.5. 



1897. Champion Biol. Centr.-Amer., Heteropt., ii, p. 10. 



Head dark, eyes prominent. The frontal pair of head spines much reduced, 

 barely more than stubs, in this respect resembling those of angulata Heidemann, 

 but the median spine is long and erect. Basal spines alsd long and erect. 

 First three segments of antennae redcUsh brown, third segment lighter towards 

 apex. Fourth .segment black. Pronotal hood small, more than twice as long 

 as broad. Three parallel carinae normal. Lateral margins wide, flaring, 

 and distinctly angulate, with four rows of areoles at point of greatest width. 

 Angle sharp or pointed, margin rounded behind. Nervures of lateral margins 

 brown. Elytra with five rows of areoles in costal area at its greatest width. 

 Subcostal area with two rows of areoles. Discoidal area very short, about one- 

 third the length of elytra. Five or six oblique nervures distinctly darkened, 

 brown to black. Apex of elytra narrowed. Length, 3.7 mm.; width, 2.2 mm. 



Eleven specimens from Panama are in the collection of the 

 United States National Museum. Champion records its occm-- 

 rence also in Colombia. Food plants of this species are not 

 known. 



Gargaphia solani Heidemann 



1914. Heidemann, Proc. Ent. Soc. Wash., xvi, p. 136. 



1915. Fink, U. S. Dept. Agri., Div. Ent., Bull. 239, pp. 1-7. 



1916. Osborn and Drake, Ohio St. Univ. Bull., xx, p. 235, fig. 7. 



1917. Van Duzee, Catalogue of Hemiptera of North America, p. 218, no. 658. 

 Head small, dark, eyes and rostral sulcus prominent. Three frontal head 



spines long, basal spines long, and more or less erect and protruding beyond 

 hood. Basal joint of antennae dark. Second and third joints lighter, fourth 

 dark except at base. Third and fourth antennal segments with numerous 

 long hairs, those on first and second segments shorter and less conspicuous. 

 Pronotal hood comparatively large for species of this genus, four times as long 

 as wide, and as high or slightly higher than median carina. All three carinae 

 comparatively high, with one distinct row of large areoles, and densely hairy. 

 Lateral membranous margins of pronotum wide and distinctly angular, with 

 at least five rows of areoles at their widest point and very hairy. Pronotum 

 dark and i)unctate, membranous portions of pronotum light, yellowish, with 

 nervures darkened in angle of lateral margins. Elytra with five rows of areoles 

 at the widest part of costal area and tliree rows in subcostal area. Five trans- 

 verse nervures of costal area l)lackened, more or less distinct. Apical angle 

 of the discoidal area at outside. Legs ijale, yellow. Length, 4 nun.; width, 

 2 mm. 



