NO. 36561 LOXOSTEGE—CAPPS 3 
Loxostege Hiibner 
Loxostege Hiibner, 1827, Verzeichniss bekannter Schmettlinge [sic], p. 352. [Type: 
Pyralis aeruginalis Hiibner, designation Hampson, 1918, Ann. Mag. Nat. 
Hist., ser. 9, vol. 2, p. 189.] 
Characters common to the Loxostege species treated here are dis- 
cussed below. 
Apuut.—Antenna simple. Frons usually pointed or conically 
produced, the modification sometimes limited to the lower margin and 
more discernible from dorsal view. Midtibia normal and without a 
hair-pencil, or incrassate and with a hair-pencil, often concealed in a 
groove. Hind tibia with two pairs of spurs (the relative lengths 
referred to herein are those of the upper pair of spurs on the hind tibia 
of the male). 
Larva.—Chaetotaxy and crochets are typical pyraustid. Pro- 
thorax with two setae on the prespiracular shield; group VI bisetose. 
Meso- and metathorax with VI unisetose. Abdominal setments 3-6 
with seta IV approximate to seta V, and under spiracle on same 
pinaculum. Ninth abdominal segment with seta I approximate to 
seta III and on same pinaculum; setae IV and V absent, only seta 
VI of this group present. Crochets on abdominal prolegs of tri- 
ordinal length and arranged in a penellipse. Anal fork absent. 
Distribution, food plant, and flight data reported in this paper are 
taken entirely from labels accompanying the specimens examined. 
Loxostege helvialis (Walker) 
Ficures 8, 62, 105 
Spilodes helvialis Walker, 1859, List of the lepidopterous insects in the British 
Museum (Nat. Hist.), pt. 18, p. 772. 
Botys thycealis Walker, 1859, ibid., pt. 19, p. 981. 
Botys apertalis Walker, 1865, ibid., pt. 34, suppl. 4, p. 1393. 
Botys citrina Grote, 1867, Trans. American Ent. Soc., vol. 1, p. 23. 
Loxostege helvialis (Walker) authors.—Fernald, 1903, in Dyar, U.S. Nat. Mus. 
Bull. 52, p. 382.—Barnes and McDunnough, 1917, Check list of the Lepi- 
doptera of boreal America, p. 131.—Forbes, 1920, Cornell Univ. Agric. 
Exp. Sta. Mem. 68, p. 556 [as helvalis.—McDunnough, 1939, Mem. 
Southern California Acad. Sci., vol. 2, p. 12. 
Matz.—Alar expanse 18-20 mm. Frons with conical production 
strong. Antenna somewhat pubescent, cilia dense, very short, 
length of cilia less than one-half width of shaft. Midtibia slightly 
incrassate, hair-pencil obsolescent. Outer spur less than one-half as 
long as inner spur. Labial palpus length less than two times width 
of eye; first segment white; second segment slightly upturned, luteous 
