556 
Journal of Agricultural Research 
Vol. XXVI, No. II 
PUPA (FIG. 2) 
When first formed the pupa is opaque white, but after a short time the eyes become 
visible and the thoracic segments become more distinct and take on a pale cream 
color. No other notable change takes place until the time for emergence. Just 
prior to emergence the elytra and thorax become yellowish brown. Pupa dorsally 
acute, ventrally somewhat flattened. Head pressed to prostemum. Pronotum 
rather broad and protruding above the head so as to make the head nearly invisible 
from above. Caudal segment bearing a pair of thick fleshy spinelike lobes directed 
posteriorly. Between dorsal and pleural ab¬ 
dominal plates an irregular deep depression 
forming a distinct submarginal groove. Pleu¬ 
ral margin of abdominal segments bearing ir¬ 
regular semicrescentic plates each having tu- 
berculiform bristles in fanlike arrangement. 
Head, antennae, and legs free. Body smooth. 
There is considerable variation in size. Ap¬ 
proximate average length 23 millimeters, width 
8.5 millimeters. 
ADUI/T (FIG. 3) 
The following description is taken 
from Blaisdell (j, p. 199-202 , pi. 1 , fig. 
19): 
Oblong, more or less strongly elongate, dor¬ 
sum flattened and slightly concave, black, 
frequently with a broad reddish band along 
the elytral suture, epipleurae often tinged 
with the same color. 
Head a little less than twice as wide as long, 
and scarcely one-half as wide as the pronotum; 
Fig. Pupa of Eleodes suturalis, dorsal view; surface plane to slightly convex, frequently 
at left, left lateral lamella (= lamina motoria mnr ~ nr i p5s alrvncr flip, firmtal «sn- 
of Schiodte) of second abdominal segment. more or les ? lm P resse d along tHe trontal su¬ 
ture, sometimes transversely so between the 
eyes, and laterally within the moderately prominent sides of the frons, opaque, mod¬ 
erately, coarsely, irregularly, and densely punctate, usually with small impunctate 
areas. Antennae rather stout, scarcely reaching the prothoracic base; outer four 
joints slightly compressed and just perceptibly dilated; third joint about equal to 
the next two combined; fourth, distinctly longer than the fifth; the latter to the 
seventh, inclusive, subequal and slightly longer than wide; eighth, triangular and 
about as long as wide; ninth and tenth, suborbicular; eleventh, short ovate. 
Pronotum widest at the middle and about one-half wider than long; disc opaque, 
smooth, slightly convex, finely and sparsely punctate, with small impunctate areas 
about the center, frequently with irregular impressions; laterally longitudinally 
impressed from within the apical angles to a very short distance in advance of the 
basal angles, terminating in feeble basal impressions, the depressions are generally 
transversely rugulose; apex deeply emarginate and more or less obsoletely margined; 
sides broadly and more or less strongly reflexed, evenly arcuate or sometimes very 
feebly and broadly angulate at middle, slightly sinuate in front of the basal angles, 
marginal bead moderately coarse; base truncate and feebly trisinuate, distinctly 
margined, two-fifths to one-half wider than the apex; apical angles acute, sub¬ 
acuminate, prominent and more or less everted; basal angles rectangular. 
Pro pleurae opaque and smooth, very finely and sparsely to obsoletely, muricately 
punctate, more or less rugulose at times, and defined from the reflexed pronotal 
margin by a longitudinal concavity. 
Elytra oblong, one-third to twice as long as wide and more or less opaque; base 
feebly emarginate, and about equal to the contiguous prothoracic base; humeri obtuse 
and not prominent, rounded beneath the basal angles of the pronotum; sides evenly 
arcuate to subparallel, apex scarcely to feebly produced; disc plane to slightly convex, 
very suddenly deflexed laterally, angle of deflexion forming an acute and moderately 
reflexed margin, which becomes obsolete a short distance before the apex, more or 
less suddenly obliquely declivous posteriorly; surface sulcate, intervals feebly convex, 
each with a single series of rather distantly placed punctures, the four inner sulci 
with but a single series of closely placed submuricate punctures, remaining sulci 
