READING PUBLIC MUSEUM AND ART GALLERY

LAWRENCE S. DILLON A.NO ELIZABE'l'H S. DILLON 103
Distrib'Ution.-Southeastel'D Brazil and Paraguay.
BRAZIL : g; no locality data ; [M.C.Z.] Zt, ; Caeboeirinha, Parana, November,
194O-Jnnuary, 1941; (A. MaUer) ; [L. Lacey]. 2 ; Hansa Humboldt, Sta.
Catharina, November-Janunry; (A. Maller); [L. Lacey). 2 2; Rio de
Janeiro, December; [M.C.Z.-I; C.M.-I.] 2; Sao Sebaiti, BrIo Paulo, Oc­
tober, 1920; (Barbiellini); [E. G. Linsley] . 5; Bahia; [A.N.8.P.]. 9 j
Nova Friburgo; [M.C.Z.].
PARAGUAY : t; Horqueta, March 15, 1934; (A. Schulze) ; [L. Lucey).
Plerodia singularis Thomson
PLATE v, FIGURE 8.
Plerodia sinuularis Thomson, Physis, II, 1868, p. 61.
Plerodia spuria Thomson, idem.
Somewhat smaner than the other species but closely resembling
syrinx. The elytral fascial however, is very obsolete, and
pronotal discal tubercles are feebly elevated.
:MALE. Elongate-ovate, robust, suooylindrical, elytra subconvc."'\ ; head and
pronotum piceous or black, elytra dark reddish-brown. All over thinly yellowisb­
gray pubesccnt., nearly immnculate; 11 short, indistinct vitta basally and more or
less laterally on pronotum, sometimes continued very short.ly on each elytron just.
above humeri; each sternite with a small, more or less elongate macula each side.
Head ahove finely nlut:l.ceous, (L median impresscd line from oeciIl\lt to near
epistorna; front elongate, Mrrow, widened bclow lower lobe of eyes, surface finely
alutacco\1s; genae feebly pubescent, alutaceous; lower lobe of eye oblong-ovate, a
little more than twice genal height; antennal tubercles distant, prominent, nt apex
produced into a very short, robust proo which is curved posteriorly. Pronotum
transverse, sides straight., base wo-thirds wider than apex; npic.'ll sulcus only feebly
interrupted at middle, bnsal one eithcr sidc foveate and thence oblique to middle
lal.cnltly ; not firmed laterally, with a few setigerous punctate grnnulcs near base.
ScutclJum tnlnsverse; sides nearly straight, oblique; apex broadly rounded, feebly
notched medially. Elytca with sidcs nearly strnight, moderately nLtenuate apically;
apices roundod separately; each elytron at base very feebly gibbose, basal half with
coarse, close-set punctures, thence to apex punctures much finer; humeri promi­
nent, anterior margin nearly stnlight, very oblique, angle obtuse, posterior margin
with a carina extending to basal rthird. Prosternum only slightly widcncd behind
middle of procoxae; metasternum deeply, bilobed1y emarginnte apically; fifth ster·
nite about one-third longer than fourth, feebly emarginatc apically. Procoxae
globose, with a. feeble obtu:e tubercle internally; profemorn robU3t, gradually cla­
vnle, transversely rugose dorsally tlnd ventrally on basal third, remnining femora
more abruptly ciaV1l.te; metatibiae widened llpically; protar$i slightly dilated. An­
temme slightly longer than body; scapc robust, gradually clavate, roaching to
apical third of pronotumj third segment nearly straight, one-fourth Ilgaiu as long
as scape ; fimbriate fun length, fringe slightly heavier on scape and third segment.
LENGTH 8.5-9.5 mm.; width 3-3.5 mm.