38 
AMERICAN SPECIES OF ARADUS (hEMIPTERa) 
and basal and apical rinjis of tib'ae, yellowish; sternum and most of ventral 
surface of abdomen reddish brown. 
Head as long as broad, longer than pronotum (30 to 24); tylus moderate!}’ 
comjiressed, slightly enlarged at middle; imj)ressions of vertex elongate, 
dee}), })arallel; })reocular tubercles distinct; antenniferous s|)ines moderately 
stout and divergent, the lateral tooth slight or absent; ))ostocidar tubercles 
of moderate size; antennae (fig. 8c) robust, almost as long as head and })ro- 
notum together (48 to 53), the first segment reaching middle of tylus, the 
second about as long as distance between eyes; rostrum extending beyond 
ai)ex, sometimes almost to middle of mesosternum. Pronotum (fig. Sd) with 
sides finely crenrlate, bearing anteriorly a few large teeth which may be 
obsolescent; carinae well elevated, rather roughly granulate. Scutellum 
longer than j)ronotum (3() to 24), triangular, with distinct transverse eleva- 
tion at base; sides strongly elevated and sometimes very slightly curved. 
Hemielytra (ct') extending to genital lobes, ( 9 ) to middle of dorsal genital 
segment, narrowed (cf 9), ex])osing disc of abdomen at sides, corium nearly 
to base of fourth; exocorium moderately ex])anded; me.socorium with one, 
endocorium without distinct transverse veins. Alnlomen In-oadly ovat(', 
the lateral margins entire. 
cf (fig. 8b). Fifth ventral segment about as long as sixth; genital segment 
moderately convex. Median carinae of })ronotum less strongly divergent 
at base than in female. Length, 5.5 to fi mm. 
9 (fig. 8a). Posterior margin of dor.sal genital segment nearly straight at 
middle; genital lol)es |)rojecting considerably as viewed from above. Length. 
(3.5 to (5.7 mm. 
Type siieciniens (California) prol)al)ly in the Stockholm Afn- 
seuin. 
This distinctively western species is (listinsnished from allied 
forms by its coloration, details of antennal and jironotal strnc- 
tnre, and the genital characters. It seems to be modei-ately 
common on the Pacific Coast. 
9. Aradus (Aradus) pannosus Van Duzee (Plate I, fig. 9.) 
1920. Ardiluti /Hinnosiis Van Duzee, Proc. California Acad. Sci. (4), ix, )>. 
332. 
DislrihtiHox . — Califoknia: Berkeley, I, 8, 1919 (11. Dietrich), 11, 2 1915 
(IV P. Van Duzee); Marin County, XII, 27, 1915 (11. Dietrich). 
J)e.sc7'ii)ti(»i . — Dark brown, variegated about as in the ])receding; second 
antennal segment with a broad yellow ring at ai)ex. 
Head about as long as broail, longer than i)ronotum (28 to 22); imi)ressions 
of vertex rather broad, slightly divergent anteriorly; ])reocvilar t ubercles 
distinct; antenniferous si)in(‘s short, very stout, moderately divergent, the 
lateral margin irregular; postocuhu’ t ulx'i’cles slightly develojx'd; antt'unae 
(fig. 9c) robust, shorter than head and pronotum togethei’ (40 to 48), the 
first segiiKMit reaching middle of tylus, 1 he second slight ly longei- 1 han distance 
