15. 
16. 
20. 
22 
38 
Borers in callous tissue around wounds 
On various hardwoods ............... Coleoptera, Curculionidae 
On maples; 15+; Lepidoptera, Sesiidae Coleoptera, Cerambycidae 
Olr Copiers. os 2a hee estes poet Lepidoptera, Sesiidae, Pyralidae 
Borers in the dead wood beneath fire scars, turpentined faces, blazes, 
cavities, and: Similar wWOundS.23.3 = «.< akat.ancene cca scevads eb e es 
Borers under the bark or in the wood (other than beneath scars or catfaces) 
Ol IMVIMG WEES. <.ot ooe ua eae Maas uah Rare eee ee ee See ee 
Bark beetles associated with their larvae under the bark ............ 
Root Doters:of mining at baSe “Ol Wee 24 bo sc5n toca nc stat ae Seees 
White, unpremented Jarvae ..4...4<5¢58. Coleoptera, Cerambycidae 
Highly pigmented larvae in galls ...... Hymenoptera, Tenthredinidae 
Serpentine mines just under the epidermis of chestnut and oak ....... 
Lepidoptera, Nepticulidae 
Beetle larvae; wood stained around holes’... Coleoptera, Scolytidae, 
Platypodidae 
White, fleshy, cylindrical larvae in hardwoods .................... 
Coleoptera, Cerambycidae, Brentidae 
White, fleshy, flat-headed larvae in turpentined faces in fire scars on 
COMMCES 6 Serr ae en ae = ae oe eevee eee Coleoptera, Buprestidae 
Larvae with heavy, chitinous armature on last segment; chestnut, oak, 
TDS Se aonatenccapy cuensaaanere a: ecient Coleoptera, Lymexylonidae 
. Larval mines extended under the bark and also deep into the wood in later 
SIO ES. liu: at arn aces oes Gea nes oe wee re ee ein eee rere cee 
Larval mines entirely under the bark or only in wood of current annual 
3) i ee ee en eee ee ee ee nae err a oe 
. Pitch exuding from larval mines; larvae with prolegs present; conifers 
en ae a ee ee eee Lepidoptera, Sesiidae, Pyralidae 
No pitch, ‘but often water and tass exuding 2..2%,255 524 2s45-4¢e 503 
Head of larvae globular protuberant ..°.6:2....0:.20nssduns ewes 
Head of larvae somewhat flattened and embedded in prothorax . . Coleop- 
tera, Cerambycidae 
Prolegs absent; last segment often heavily armed ........ Coleoptera, 
Tenebrionidae 
Prolegs absent; larvae curved, grublike; in willow, poplar, and palmetto 
Cine wile Bee uae at ee ee Coleoptera, Curculionidae 
Prolegs present; last segment not heavily armed ...Lepidoptera, 
Hepialidae, Sesiidae 
. Larvae depressed, flat-headed or pestle-shaped. . Coleoptera, Buprestidae 
Larvae curved, orublike ..242..2.2s924.: Coleoptera, Curculionidae 
Larvae slender; thoracic segments not noticeably enlarged; cause pitch 
tlecks-mt wood: birch. Cle: 2.45.4 sae oa Diptera, Agromyzidae 
Larvae with prolegs:; poplar, willow, alder, ash, persimmon.......... 
Lepidoptera, Hepialidae, Sesiidae 
Larvae without prolegs 
In hardwoods ...............---000+ Coleoptera, Cerambycidae 
In conifers; associated with pitch mass ... Coleoptera, Curculionidae, 
Scolytidae 
18 
le 
iy 
20 
