234 
General Catalogue of the Homoptera 
1916 [Hysteropterum] cornutum Van Duzee, Check List of Hemiptera 
of America North of Mexico 1916: 80 [Listed]^ 
1917 Hysteropterum cornutum Van Duzee, Catalogue of Hemiptera of 
America North of Mexico 1917: 744 [Catalogued]^ - ^ 
1918 H[ysteropterum] cornutum de Bergevin, Bull. Soc. Hist. Nat. 
Afrique du Nord 9: 66 [Note]^ 
1923 [Hysteropterum] cornutum Van Duzee, Proc. California Acad. 
Sci. (4) 12: 192 [Comparative note] 
1935 [Hysteropterum] cornutum Ball, Bull. Brooklyn Ent. Soc. 30: 38 
[Comparative note] 
1939 [Hysteropterum] cornutum Doering, Bull. Univ. Kansas Sci. Bull. 
25: 491, 492, 493 [Comparative note] 
1947 Hysterapterum [sic] cornutum Fautin, Ecol. Mon. 16: 269 [Ecol- 
ogy]* 
1947 Hysteropterum cornutum Fautin, Ecol. Mon. 16: 273, 306 [Ecol¬ 
ogy] 2 
Localities: ^ California. ^ Utah. ^ Colorado. ^ Western States. 
cornutum var. cornutum Melichar 
1939 Hysteropterum cornutum cornutum Doering, Bull. Univ. Kansas 
Sci. Bull. 25: 493; PL LVII, Figs. 5, 6; PI. LVHI, Figs. 8, 11; 
PI. LIX, Figs. 5, 6, 15 [Described, illustrated]^-^ :482 
[Key] 
Localities; ^ California. 2 Colorado. ^ Nevada. * Utah. ® Idaho. 
cornutum var. utahnum Ball 
1935 Hysteropterum cornutum utahnum Ball, Bull. Brooklyn Ent. Soc. 
30: 38 [n. var., food plants, comparative note]^ 
1939 Hysteropterum cornutum utahnum Doering, Bull. Univ. Kansas 
Sci. Bull. 25: 495 [Described]^-2- 3 .4 .492^ 493 [Comparative 
note] :482 [Key] 
Localities: ^ Utah. 2 Arizona. ^ New Mexico. ^ Colorado, 
costale Matsumura 
1910 Hysteropterum costale Matsumura, Jour. Coll. Sci. Tokyo 27 
(18) :25 [n. sp.]' 
1912 [Hysteropterum] costale Oshanin, Katalog palaarktischen Hemip- 
teren 1912: 123 [Listed]^-^ 
Localities: ^ Grenada. 2 Spain. ^ Portugal. 
curtulum Melichar 
1906 Hysteropterum curtulum Melichar, Abh. Zool. Bot. Ges. Wien 3: 
121 [n. sp.]i :117 [Key]' :318 [Listed]' 
1907 Hysteropterum curtulum Oshanin, Ann. Mus. Zool. St. Petersburg 
12: 264 [Catalogued]' 
