AMERICAN SPECIES OF AKADUS (HEMIPTERA) 
S8 
front, withonl lateral tooth; postoeiilar tubercles obsolescent; antennae (fis- 
•We) slender, somewhat variable in thickness, as Ions as head and pronotuin 
tosether, the first sesiaent reachins about to middle ot tyhis, the length 
of the second almost eciual to width of head including one eye; rostrum ex- 
tt'uding to nuddU' of uK'sosternum. Pronotum (fig- 49d) convex, lateial 
margins narrowly ex])and{“(l, evenly granulated, with a few coarse, variable 
teeth anteriorly; carinae w'ell elevated. Scutellum longer than pronotum 
{2S to 22), sides ])arallel in basal fourth, then more or less distinctly sinuate 
to the naia’owly rounded ai)ex, moderately elevated; disc just before middle 
and basal angles moderately elevated, with connecting, lower ridges. Hemi- 
elytra (cf) extending to apex of abdomen, corium to middle of fifth seg- 
meid, connexivum not fully exi)osed at sides; (9) extending to middle or 
ai)ex of dorsal genital segment, corium to apex of fourth, connexivum exposeil; 
exocorium very slightly expanded at base; me.socorium with (uie, endocorium 
without distinct transverse veins. 
cf (fig. 4!)b). Fifth ventral segment deei)ly cmarginate, very short at 
middle; genital segment very long, moderately convex; abdomen narrowly 
oval, the lateral margins entire. Length, 4.75 mm. 
9 (fig. 4!)a). Dorsal genital segment broad, posterior margin slightly 
arcuate, notched at middle; fifth ventral segment with a transverse, sinuate, 
linear impression before middle; abdomen rather broadly oval, lateral mar- 
gins almost entire, feebly ])rominent at apical angles of connexival segments. 
Length, 5 to 5.S mm. 
Type sitecinicii (C'viLa) in the Stockholm Aluseinn. 
Allhonwh comparisons with the type have not lieen made, I 
think there can lie no donlh that this species is corrt'ctly located, 
as I find entii'e agreement with the original descri])tion and with 
Iha-groth’s ( 1S<S7) statement of the female characters. The stnic- 
tur(‘ of the genital segments in both sexes is sufficient to dis- 
tinguish it fi'om all others, exc(']h ahhafi cf, the short genital 
lol)('s, as vii'wed from above, being characteristic. From ever- 
nuinn.i, oftiui (Udermined as this siiecies, it is readil}^ seiiarated 
by its largxM' size, non-reticulate corium, et(‘. I find that this 
s))(a‘ies has often Ixaui misidentified as hrevidtus, an error due, 
no doubt, to tlu' short iK'ss of tlu' genital lolx's in the female, as 
vi(‘W(‘d fi'om above', although tins abbreviation is by no means 
('xc('ssiv(' and do('s not appi'oacli that characteristie* of the spe'- 
ci('s nu'ntioiK'd. 
50. Aradus (Aradus) marginatus Uhk'r (Plate' \’, fig. 50.) 
IS0;k Aniiliis niiirf/iiuil us IJlik'r, Proc. Fnt. Sue. W'aslungton, ii, ]). RSI. 
Disirihiilioii. — Ut.mi: .Vila, \ l, ;((), fS'.M (F. .\. Scliw.arz); Park Fify, 
\’l, 17, ISO) (F. .\. .'Schwarz). 
