II. M. PARSIILEY 
41. Aradus lAradus' tuberculifer Kirby (Plate V, tig. 41.) 
1S;}7. Ardilus fiiherculifcr Ivirby, in Richardson, Fauna Bor.-Ainer., iv, ]>. 
27S, ))1. (i, fig. 5. 
1873. Aradus ndigiuosus Walker, Cat. llein.-Ilet. Brit. Mns., vii, ]). 3(). 
1S7S. Aradus tuberculifer Kirby, in Betlmne, Can. Knt., x, p. 213. 
B)13. Aradus tuberculifer Bergroth. Can. Ent., xlv, p. 3. 
Distribution. — (^uehec: Montreal; ( )tta\va, 2S, 1(887. ^Maixe: Holden, 
\’I, 20, 1902 (F. A. Eddy); Orono (H. T. Fernald). New York: Cranberry 
Lake, VII, 24, 1917 (C. ,1. Drake); Rockaway Beach, Long Island, \'I, 20, 
1910 (Wm. T. Davis). Michkevn. Mixnesot,\. Alhert.\: Edmonton, 
IV, 20, 1919 (F. S. Carr). Al.\sk.v: Iditarod, X, 15, 1918 (Alice Twichell); 
Old Crow, VI, 18 to 20, 1912 (J. M. .lessuj)); Yukon (R. Kennicott). Colo- 
r.vdo: (Morrison). C.\liforxi.\. 
Description. — Black; basal exjiansion and veins of corium sometimes pale 
Irrownish; posterior margins of connexival segments narrowly reddish yellow; 
veins of memlirane sometimes narrowly whitish hyaline; rostrum and legs 
dark reddish l)rowu. 
Head a little longer than broad (28 to 20); longer than ])ronotnm (28 to 
25); tylus rather long, narrow, sides ])arallel; impressions of vertex broad, 
shallow, nearly parallel; preocular tubercles distinct, obtuse; antenniferous 
spines short, conical, moderately divergent, the lateral tooth obsolescent or 
ab.sent; postocular tuliercles very low, rounded; antennae (fig. 41c) moder- 
ately slender, clavate, almost as long as head and ])ronotum together (50 to 
53), the hrst .segment extending a little beyond middle of tylus, length of 
second less than width of head including both eyes; rostrum reaching apex of 
mesosternum. Pronotum (fig. 41d) rather flat, the lateral margins somewhat 
strongly reflexed, hnely granulate; carinae well elevated, variably sinuate. 
Scutellum much longer than pronotum (35 to 25), narrow', elongate, almost 
triangnlar; sides very strongly elevated, slightly arcuate, rarely angulate at 
basal third; a])ex acute; disc with a low' rounded elevation before middle. 
Hemielytra (cf) broad, covering al)domen, extending beyond ajicx of abdo- 
men, corium nearly to apex of fifth segment ; exocorium very slightly expandeil ; 
( 9 ) moderately narrowed, exposing almost w'hole width (jf connexivum at 
most, extending nearly or quite to apex of dorsal genital segment, corinm 
al)out to apex of fourth; exocorium moderately expanded; transverse veins 
of mesocorium and endocorium varial)ly develo])eil. 
cf (fig. 41b). Fifth ventral segment shorter than sixth; genital segment 
large, strongly convex; abdomen narrow, oblong-oval, the lateral margins 
nearly entire. Length, b.5 mm. 
9 (fig. 41a). Posferior margin of dorsal genifal segmenf obscure, fhe 
usual suture betw'een disc and lobes being obsolete: abdomen rather broadly 
oval, the lateral margins notched or feebly crenate. Length, 7 to 7.3 mm. 
Type specimens (('anada, lat. ()o°), in the Iji'itish Aluseum. 
This itoreal siiecies is readily distinguished l)y the shape of 
the second antennal segment, and the pronotal and genitalic 
TRANS. AM. EXT. SOC., XLVII. 
