READING PUBLIC MUSEUM AND ART GALLERY

LAWRENCE S. DlLI.JON AND ELIZABETH S. DILLON lR5
Ischioderes oncider 9 ides Dillon and Dillon, spec. nov.
PLATE VII, FIGURE 5.
Resembles in elytral maculation the saga gl'OUp of Oncideres
but the body structure is entirely distinct.
l"fALE. Elongate-ovate, moderately robust, subcylindrical; head, most of pro­
notum, and humeri black, elytra and apex of pronotum dark reddish-brown. Head
orange-ochraccous pubescent; eye posteriorly and front cach side margined with
denser pubescence. Pronotum thinly hoary pubescent, a broad band of orange­
ochraceous covering entire middle portion. Scutellum hoary pubescent, tinged with
orange-ochraceous. Elytra densely orange-ochraceous, more sparsely so at base, uni­
formly whitc ndsperse, the maculae a little denser at middle, giving a suggestion of
a fascia. Dody beneath dark reddish-brown, hoary-gray pubescent, metasternum
laterally slightly variegated with orangc-oehracecus ; esostemal side-pieces and
metepisterna maculate with orange-ochraceous; abdomcn iuscous, densely covered
with hoary and orange-ochraceous variegated pubescence, sternites one to four with
their apices glabrous in the form of elongate lunules, highly polished and conspicu­
ous. Legs black, hoary pubescent, tinged with orange-ochraceous; tarsi entirely
hoary pubescent. Antennae black, thinly hoary-gray pube:cent; from before middle
of fourth segment reddish-brown, more densely covered with short, ofiUlge-ochra­
ceaus pubescence.
Head minutely, demely punctate, a median impressed line from occiput nearly
to epistoma; front somewhat longer than broad, sides parallel, distinctly concave
between antennal tubercles, minutely, den::;e1y punctate, with a few coarser punc­
tures interspersed, especially toward mouth; genae suhquadrate, minutely, densely
.'l.lutaceous and irregularly punctate; eye with lower lobe oblong, large, more than
one and one-half times height of gena; antennal tubercles prominent, robust, well
separated, at apex with a distinct, obtuse tooth. Pronotum strongly trnnsverse,
one-half wider than long; sides uneven, arcuate, slightly narrower at very apex
than at base; lateral tubercle nearly wanting, feebly elevated, obtuse, without a
terminal process; apical transverse sulcus distinct, sinuous, basal one rather deep
medially, gradually obsolete toward sidcs, lateral oblique ones confused with discal
sculpturing; disk impunctate or nearly so, entirely covered with five to eight trans­
verse nlgosities or carinae, the basal and apical ones deeply sinuate, median ones
more nearly straight, all entire. Scutellum nearly as long as wide; sides straight,
feebly oblique; apex slightly notched at middle. Elytra with sides slightly widened
to behind middle, apices slightly dehiscent, together rounded, slightly prolongcd near
suture; ba£e without distinct gibbosity, moderately densely, finely granulate-punc­
tate to basal quarter, thence simply, finely punctate to apices ; humeri slightly prom­
inent, glabrous, anterior margin rounded, tubercle at angle lacking. Prosternum
simple, narrow, slightly wider basally; mesosternum with process elongate, sides
nearly parallel, apex feebly emarginate, on apical half with an elongate, low, but
distinct tubercle. Procoxae anteriorly with a strongly curvcd, robust uncus; fcmora
robust, clavate, metafemora more slender, profemora nearly cylindrical, constricted
at buse, on basal two-thirds coarsely, irregularly rugose, on anterior face more
feebly so; tarsal claw segment dist.inctly shorter than rest together. Fifth sternite