Larvae curved, legless; several larvae in a burrow, 
each usually separated by a pith or clay partition 
across the gallery 
Hymenoptera, Sphecidae, Vespidae, Apidae 
Larvae and bark beetles associates 
Coleoptera, Scolytidae 
C. Insects in Lumber 
7. Fine sawdust exuding from small ‘“‘pinholes’” (less than 
1/10 inch in diameter) in green lumber; holes usually 
darkdysstamed g..0o10 eo ake. Coleoptera, Scolytidae 
Sawdust, if exuding, coming from larger holes in drier 
lumber, cut a month or more ................. alle oer eT SS ba 
8. Damage to lumber with bark present: 
Larvae elongate 20.0... Coleoptera, Cerambycidae 
Marnvae curved .....8% 2 ss Coleoptera, Bostrichidae 
Damage not associated with presence of bark on material 
9. Fine sawdust exuding from circular or oval holes: 
Small, curved larvae ............. Coleoptera, Lyctidae 
Klongate larvae Coleoptera, Cerambycidae 
Large, black ants associated with damage; sawdust accu- 
mulating in large piles from damp wood 
Hymenoptera, Formicidae 
Damage concealed and sawdust usually not falling from 
JOON SIS) 2a GS sass ke i RS ed a amet ALAI Sash alee etal ee base eh cil at 
10. Larval tunnels packed with sawdust: 
Larvae elongate, cylindrical 
Coleoptera, Cerambycidae 
Larvae elongate, flatheaded 
Coleoptera, Buprestidae 
Tunnels open: 
Irregular cavities following the grain of the wood 
loosely filled with fine impressed pellets ......... lsoptera 
Round holes 14 inch or less in diameter, often with 
cross partitions or cells 
Hymenoptera, Apidae, Vespidae, Sphecidae 
D. Insects in Materials in Ground 
11. Large, elongate larvae associated with damage consisting 
of grub holes extending through the wood 
Coleoptera, Cerambycidae, Oedemeridae 
Large irregular cavities eaten in the wood, representing 
spring wood; usually extending with the grain of the 
wood; sides of cavities plastered with claylike excre- 
IG Mien: eet evetetr «hue has or ue noes dines bear A erate Isoptera 
Large, irregular cavities eaten into wood, usually cutting 
across the grain, surfaces smooth, no excrement, large 
piles of sawdust accumulating outside; large, black ants 
associated with injury in moist or damp wood 
Hymenoptera, Formicidae 
10 
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