AMERICAN SPECIES OF ARADUS (hEMIPTERa) 
IK) 
51. Aradus (Aradus> uniannulatus s]). nov. (Plate VI, fig. 51.) 
Description. — Black; third antennal segment i)ale yellowish in apical third; 
base of head with oblicine ])ale lines; i)osterior margins of connexival seg- 
ments narrowly i)ale, the hands becoming indistinct inwardly; membrane 
hyaline, with faint brownish Tiiacnlation. 
Head about as long as broad and as long as jn-onotum; tylus rather short 
and broad, rounded at apex, enlarged at base; inpn'essions of vertex broad, 
shallow, widely separated, nearly iiarallel, connected posteriorly; i)reocular 
tuber(‘les small but distinct; antenniferous spines short, slightly divergent, 
without lateral tooth; postocidar tubercles rather low, rounded; antennae 
(fig. 51c) very slender, almost as long as head and pronotum together (37 
to -10), the first segment extending beyond middle of tylus and w'ell beyond 
a])ex of antenniferous spines, the second in length efpial to w'idth of head 
including one eye; rostrum reaching almost or quite to middle of mesosternum. 
Pronotum (fig. 51d) slightly convex, the lateral margins moderately ex- 
panded and distinctly reflexed, denticulate anteriorly; carinae distinctly 
elevated. .Scutellum somewdiat longer than pronotum (23 to 20), rather 
broad (23 to 17), the sides nearly straight to apical third, then slightly ar- 
cuate to the very narrowdy rounded or almost acute apex, slightly elevated, 
scarcely so toward ajiex; discal elevation rounded, slightly higher than margins 
at middle; base deiiressed excejit at angles. Ilemielytra (cf) broad, cover- 
ing connexivum, reaching apex of abdomen, corium beyond middle of fifth 
segment; (9) very slightly narrow'ed toward a])cx, narrowly exposing con- 
nexivuin at sides, reaching genital lobes, corium over base of fifth; exocorium 
not ex])andod at base; mesocorium and endocorium with numerous indis- 
tinct transverse veins; cells not hyaline. 
cf (fig. 51b). Fifth ventral segment about as long as sixth; genital seg- 
ment rather long, moderately convex, the lobes short, with straight, oblirpie 
posterior margins and very small median notch; abdomen oblong-oval, the 
margins nearly (mtire. Length, 4.2 mm. 
9 (fig. 51a). Posterior margin of dorsal genital segment slightly arcuate, 
straight at middle; abdomen narrowly oval, the lateral margins entire; lobes 
rather short, sharply ungulate at a])ex. Length, 4.4 to 5 mm. 
Nolotype. — 9; I'^dnionton, Alberta, IV, 17, 1910 (F. S. (dirr), 
in iny eolU'clion. 
Allotype. — cf ; PiiK'lawii, Long; Island, New York, V, 12 (Wni. T. 
Dtivis), in niy (‘olh'ction. 
Porotypes. — Idunak's; Fdnionton, Albi'rlti, V, 0, 1019; 23, 
1010; 2S, 1010 (F. S. (’;irr), in (b A. Moore’s eolleelion and 
in iniiK': Martnadfe, Miehigaiq 28, ISSS, in my eolleelion: 
\\ tisliingioii, I). ('., XI, 20 ((). Ibudemann), on Pimts inops, 
in llio lleidotnann eolhad ion, ( 'oi indl Fnivtu'sif y, jtaralyiii' No. 
