286 
General Catalogue of the Homoptera 
1923 Hiysteropterum trapezoidale de Bergevin, Bull. Soc. Hist. Nat. 
Afrique du Nord 14; 86 [Comparative note]^ 
Localities: ^ Algeria. ^ Constantine. ® Morocco. 
truncatellum Walker 
1851 Hysteropterum truncatellum Walker, List of Homopterous Insects 
2: 377 [n. sp.]i 
1859 Hysteropterum truncatellum Dohrn, Catalogus Hemipterorum 
1859; 64 [Listed]' 
1906 H[ysteropterum] truncatellum Kirkaldy, Bull. Hawaiian Sugar PI. 
Assoc. Div. Ent. 1 (9) :439 [Listed] 
1906 Hysteropterum truncatellum Melichar, Abh. Zool. Bot. Ges. Wien 
3; 150; Fig. 20 [Described, catalogued, illustrated]' :319 [Listed]' 
Localities: ^ Australia. 
truncaturn Walker. See Tylana truncata Walker. 
tumidulum Walker. See Lollius tumidulus Walker, 
tunetanum Matsumura 
1910 Hysteropterum tunetanum Matsumura, Jour. Coll. Sci. Tokyo 27 
(18) :24 [n. sp.]' 
1912 [Hysteropterum] tunetanum Oshanin, Katalog palaarktischen 
Hemipteren 1912; 123 [Listed]' 
1912 [Cicadula] tunetana Oshanin, Katalog palaarktischen Hemipteren 
1912; 111 To [Cicadula] tunisiana Mats, [error] 
Localities: ^ Tunisia. 
unum Ball 
1910 Hysteropterum unum Ball, Proc. Biol. Soc. Washington 23; 
43 [n. sp.]' 
1916 [Hysteropterum] unum Van Duzee, Check List of Hemiptera of 
America North of Mexico 1916; 80 [Listed] ^ 
1917 Hysteropterum unum Van Duzee, Catalogue of Hemiptera of 
America North of Mexico 1917; 744 [Catalogued]' 
1939 Hysteropterum unum Doering, Bull. Univ. Kansas Sci. Bull. 25; 
489; PI. LVII, Figs. 7, 10; PL LVIII, Figs. 1, 13;’ PL LIX, Figs. 
1, 2, 13 [Described, catalogued, illustrated]'’^’^ :482 [Key] 
:488, 489 [Comparative notes] 
1950 Hysteropterum unum Stroud, American Mid. Nat. 44; 665 
[Ecology]^ 
Localities: ^ Colorado. ^ Rocky Mountain States. ® New Mexico. ^ Texas. 
utahnum Ball (var.). See Hysteropterum cornutum var. utahnum Ball. 
vihex Melichar. See Hemisohimn vihex Melichar. 
