INSECT ENEMIES OF EASTERN FORESTS 
165 
KEY TO THE GENERA OF LAMELLICORN BEETLES IMPORTANT TO FORESTRY IN 
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EASTERN NORTH AMERICA—Continued 
Hind tibiae slender and not, or only slightly, flattened, never 
progressively widened from base to apex, usually slender through- 
out, surface with sparse hair; labrum not connate with clypeus 
and not visible from above; claws long, not cleft but with sub- 
median (subbasal in some species) tooth; size more than 11 mm.__ 
Clypeus with a low, broad, longitudinal elevation or ridge along 
median area; hairs along top of head reddish, comparatively 
coarse, and pointing directly back; confined to Middle Atlantic 
Staves mc Melolombhimae)a se 1 ee as Autoserica 
Clypeus without an elevation or ridge along median area; hairs 
along top of head comparatively fine and nearly erect, not 
pointing directly back; throughout the United States. (Melo- 
Hora elaliintea eee eID rate era oe Rice bs aS de ls eS eel Serica 
Antennae terminated by a club of 3 leaflike plates; elypeus rounded 
or 2-lobed, never square in front; dorsal surface of eastern species 
never with scales (except P. lanceolata); color uniform brownish 
or dark, except a few prairie species which may appear to be 
Stnijoe chm Miclolomtiniiae) oe sas ae ee Bs Phyllophaga 
Antennae terminated by a club of 6 or 7 very large leaflike plates; 
clypeus square on front; dorsal surface always more or less 
sealed; color variable, usually brownish or with brown and white 
striped longitudinally. (Melolonthinae)____________ Polyphylla 
Claws of tarsi unequal in size, the inner claw usually much more 
slender than the outer. (Subfamily Rutelinae)_._-___._______ 
Claws of tarsi equal in size, except front tarsal claws of some 
Ochrosidia in which one claw of the male may be heavy and 
TNT i Ts als el gi ey ean ae pet Fp goede ey ey Ya ane 
Wing covers with a membranous margin; antennae 9-jointed; 
mandibles, in repose, not projecting beyond the clypeus_______ 
Wing covers without a membranous margin; antennae 10-jointed; 
mandibles usually visible beyond the clypeus______.__.______ 
bodyamone orm lesssilanvencdudorsally = 2520422 oe eee eee 
Bodvacictimetiv convex idonsally oi. ete ce eee a 
Pygidium with a patch of white hairs on each side; head and pro- 
thorax bronze green; wing covers deep reddish tan with green 
manoinaldime.. Choutehnae)c 2. tee le a ee Popillia 
Pygidium without such spots; head and prothorax dull blackish 
green or brownish; wing covers dull yellowish to very dark or 
DIECCOUSH "CwUtehinaAe) Hsot es es) Strigoderma 
Middle pair of legs nearly or quite touching, being separated by a 
very fine, hardly obvious, line or ridge. (Rutelinae)___Anomala 
Middle pair of legs well separated by a projecting lobe like process. 
G@Rauib eine e) eens are ees epee ae ee we Pachystethus 
Prothorax without a marginal line at base; dorsal color dark brown. 
(GRatnaive itunre)) eae rer eatin eine ee ae Polymoechus 
Prothorax with a marginal line at base; dorsal color predominantly 
vellowasheor tan with black spots). 02022. 22.22 fl fe ee ae 
Clypeus without a suture between it and the front; wing covers (in 
Eastern States forms) with a total of 6 black spots and prothorax 
Wiiiieen lack spots. . (Rutelinae). 92 2 <7 eee Pelidnota 
Clypeus distinctly separated from the front; wing covers predomin- 
antly yellowish, each with a depressed line along the lateral area. 
Glxsuibive Winey) mente sna tete nO i pln. Tee WU ES Di se Cotalpa 
Body distinctly convex dorsally; front coxae transverse, not 
Dronmmenta= (ouptamily. Dynastinae)-— 2222220555 se Se ake 
Body somewhat flattened to nearly level dorsally; front coxae 
conical and prominent. (Subfamily Cetoniinae)_-.--.-_--_2-— 
Head and pronotum unarmed in both sexes; front claws of some 
males unequal, 1 being very heavy and bent. (Dynastinae) 
Ochrosidia 
Head or pronotum, sometimes both, armed, or at least bearing a 
GUNOEKCle eine DOL SOXCS joa. eu Lees ee Cee ee eel 
Size not over 30 mm. long; color piceous or dark reddish brown_- 
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