INSECT ENEMIES OF EASTERN FORESTS 
189 
KEY TO THE ADULTS OF THE EASTERN GENERA OF BUPRESTIDAE—Continued 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
20. 
ile 
KEY 
Prosternal spine obtusely angulated behind prothoracic coxae: 
epimera of metathorax not covered by adbomen______________ 
Prosternal spine acutely angulated behind prothoracic coxae: 
_ epimera of metathorax partly concealed by, abdomen 
Prosternal spine obtusely rounded at apex 
RONEN OG | cat 3 ip a ee inyra C. and G 
Menmtummpentirelyscorneouses an N.S eo i an | 
AnMberiorn edge oOfmentum Corlaceous.—— -2 2 Buprestis IL. 
IE AGE ARS Gal a UC veeeee et See ove A Ee tea eT eS ee 
PIULAMMNOG Sunlatesns | = See te) ts Se Trachykele Mars. 
Scuvellumesmalltroundyovale. 9252). 222 es Dicerca Esch. 
Scutellum large, trapezoidal; pronotum with smooth median line 
Poecilonota Esch. 
Anterior edge of mentum coriaceous ___________ Melanophila Esch. 
Mentum entirely corneous 
Bas croleuhoraxqtnumcCate noel Lelie se ee eee EN a oe 
ipaseyor thorax simuate. = 53255 _ = | === 8 Xenorhipis Lec. 
Last ventral segment of abdomen punctured like the segments pre- 
CO Cita Sree pe es rep pay US eo li pees 2 ee Anthaxia Eseh. 
Last ventral segment of abdomen much more densely punctured 
thantthespreceding segments 222222. a) aa Agrilaxia Kerr. 
Hind tarsi with first joint considerably longer than second; third 
joint not prolonged at sides; sapwood and bark borers_________ 
Chrysobothris Esch. 
Hind tarsi with first joint only slightly longer than second; third 
joint prolonged at sides; heartwood borers in various hardwoods _ 
Actenodes Lec. 
16 
17 
19 
TO THE LARVAE OF THE MORE IMPORTANT GENERA OF BUPRESTIDAE 
Leaf miners, larvae spindle- or wedge-shaped___________________- 
Twig or bark borers or occasionally gall makers; larval form elon- 
gate, parallel, last segment ending in a pair of spines__________ 
Wood or bark borers; larvae hammer-headed or pestle-shaped; no 
(5) OMNIS: Be aa RN CORD Re ER 
Dorsal plate of prothorax marked with an inverted Y, V, or U_____ 
Dorsal plate of prothorax bearing only a single median impression 
OSE ROO VO sie eee ee oA NN ae Re eee es 
Dorsal plate of prothorax bearing chitinous rugosities____________ 
Dorsaleplatesotmprothoraxssmooth.2 2: S22) 0 Jie oe eee ee 
Rugosities on prothoracic plates strongly developed forming ridges; 
MAAr SM SzOfe pla vesadistiMeb= 2 so te 
Rugosities on plates not forming ridges, dispersed; plates indistinct 
OTULIEAT Oat Gomes ere eke a Sok me oe WN Sa 2 Sk nee ee eee 
Dorsal prothoracie plate marked with a distinct inverted Y; breeds 
KMEC OMe Rope miame nem rr ented eM ay TO ae ja oo Chalcophora 
Dorsal plate marked with an inverted V or U; breeds in hard- 
RKO OC ay Bal SF i a gre ee a Chalcophorella 
Asperate areas of dorsal plate longer than wide; ventral area com- 
pletely bisected by median groove; first abdominal segment 
smaller than second; mandible usually tridentate___Melanophila 
Asperate areas of dorsal plate wider than long or of approximately 
the same dimensions; ventral area not completely bisected _____ 
Dorsal plate marked by an inverted Y or U surrounded on th 
anterior half by the asperities suggesting a hood; ventral plate 
marked by a median groove extending from posterior margin 
forward but not completely bisecting plate; mandible usually 
tridentate labrum usually tridentate__ = === —=---_ += Buprestis 
Dorsal and ventral asperate plates nearly circular; ventral bearing 
a median groove, which extends backward from the anterior 
margin about two-thirds of the distance; mandible usually 
pidentate labrummentine 24.2555 eee ees Chrysobothris 
Metathorax bearing a dorsal and ventral pair of ampullae, ventral 
groove not bisecting prothoracic plate_-_----_--------- Anthaxia 
Metathorax normal; ventral groove bisecting plate__------------ 
or) on 00 1 bo Who 
