!)8 
AMERICAN SPECIES OF ARADUS (hEMIPTERa) 
Hoad luuch longer than broad (48 to 3(b; tylus long, one-half length of 
head, eoini)ressed, sides nearly i)arallel; impressions of vertex broad, slightly 
divergent, indefinitely connected jmsteriorly; preocular tubercles distinct, 
conical; antenniferous s])ines moderately acute, divergent, the lateral tooth 
rudimentary; postocular tubercles obsolete; antennae (tig. .56c) moderately 
slender, almost cylindrical, nearly as long as head and pronotum together 
(75 to 78), the first segment not (piite reaching middle of tylus, the second 
longer than distance between eyes (30 to 20); rostrum (cf) extending just 
be 3 'ond apex of mesosternum, (9) to middle of mesosternum. Scutellum 
almost as long as head (45 to 48); sides elevated, disc almost entirely fiat. 
cf, stenopterous (fig. 56b). rronotum much shorter than head (24-37), 
flattened i)ostcriorly and in general reduced; carinae distinct. Hemielytra 
reaching apex of genital segment, strongl_v narrow'ed (somewhat less so than 
in tig. 60d.3), corium to fifth segment; exocorium strongly" expanded at base; 
mesocorium with numercjus transverse veins, endoeorium without; cross- 
veins of membrane obsolescent. Hind wings apparently absent. Fifth 
ventral segment slightly shorter than sixth; genital segment rather short, 
moderately convex, the lobes long; abdomen oblong-oval, lateral margins 
almost entire. Length, 7.5 mm.; width, 3 mm. 
9, braeh 3 '])terous (figs. 56a, 56d). Pronotum much shorter than head 
(;t() to 48), similar to that of male. Hemielytra abbreviated (fig. 56d), slightly 
longer than scutelhmi, longitudinal veins distinct, membrane vestigial. Pos- 
terior margin of dorsal genital segment nearly straight; abdomen broadly 
oval, the lateral margins almost entire, breadth at fifth segment equal to 
length behind scutellum. Length, 10.7 mm.; width, 5.5 mm. 
Type s])ecinieiis (C'alifornia), Nos. (384 and (385, California 
Academy of Sciences. 
This extraordinary species is not closely related to any other, 
Ltd ('xhil)its some affinity with cinn.avionieus and with hcidc- 
uKUitii in type of wing polymorjdiism, so that it may be placed as 
a comu'ctiiig link, in some respects, between the snbgenera. It 
is lik('ly that (he macropterotis female exists and will be dis- 
cov(‘r('d, probably having the pronotiim convex posteriorly and 
siimat(' laterally (as in fig. (iOd). 
57. Aradus (Aradus) insolitus \'an Duzee (Plate VII, fig. 57.) 
I‘)16. Arailita in.solitn.s Van Duzee, Fniv. of ('alif. Pubs., Tech. Hulls., 
Fmt., I, ]). 233. 
1!»I7. Ariiiliia iKnoUina Van Duzee, (tat. Hem., j). 135. 
Di-strihiilion. Hurrisn (’ohi.miu.v: Vernon, 1\', 12, 1015 (M. H. Huh- 
tiiann). ( ’.•m.ikohni.v : Pallen Ivcaf Lake and (lien .Mpine, Fldorado ('ountv, 
VII, 12, 1015 (F. P. Van Duzee), VI 1, 22, 1015 (F. (t. Van Dyke); Keen 
(’amp, San .Jacinto Mountains, VI, 8, 1017 (F. P. Van Duzee). 
