E. Bradford Walker's Images
Title: RetiredOrganization: Vermont Department of Forests, Parks and Recreation
Unit: Forest Resource Protection
Country: United States
| 67 Images of 38 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 0907007 | balsam twig aphid | Mindarus abietinus | nymphs on newly-developed shoot in late spring |
| 0907012 | pine needle scale | Chionaspis pinifoliae | close-up immature & mature female & newly-hatched, brown crawlers of the next generation |
| 0907013 | introduced pine sawfly | Diprion similis | on White Pine |
| 0907014 | redheaded pine sawfly | Neodiprion lecontei | |
| 0907015 | redheaded pine sawfly | Neodiprion lecontei | red pine defoliated by larvae |
| 0907016 | white pine sawfly | Neodiprion pinetum | |
| 0907017 | white pine weevil | Pissodes strobi | pitch flow is associated with feeding and egg-laying; look for adult near the terminal leader |
| 0907018 | white pine weevil | Pissodes strobi | dead terminal caused by damage |
| 0907019 | white pine weevil | Pissodes strobi | larvae tunnel down the infested leader, girdling the terminal |
| 0907021 | cooley spruce gall adelgid | Adelges cooleyi | on douglas fir, under flocculence Note:syrphid fly larva preying on adelgids |
| 0907022 | eastern spruce gall adelgid | Adelges abietis | old galls found at the base of new shoots. Note: twig tip mortality |
| 0907023 | spruce gall adelgid | Pineus similis | galls form at the end of new growth and are often covered with needles making twigs appear scraggly |
| 0907024 | oystershell scale | Lepidosaphes ulmi | infestations are usually confined to small portions of trees |
| 0907027 | birch leafminer | Fenusa pusilla | inner leaf tissue may be completely destroyed (note the appearance of the black frass in mines) larva in leaf on gray birch |
| 0907028 | birch skeletonizer | Bucculatrix canadensisella | on white birch Early instar larvae are legless and feed with leaf tissues. Later instars have fully-functioning legs and feed externally. Note the presence of silken molting webs and pupal case |
| 0907029 | bronze birch borer | Agrilus anxius | tunnels throughout the wood in white birch |
| 0907033 | locust leafminer | Odontota dorsalis | larva, pupa & adult stages |
| 0907035 | European snout beetle | Phyllobius oblongus | sometimes present in large numbers, but notched feeding along margins is usually of little consequence |
| 0907037 | forest tent caterpillar | Malacosoma disstria | egg masses have square edges and completely encircled twigs on host branch; eggs hatching |
| 0907038 | forest tent caterpillar | Malacosoma disstria | keyhole-shaped white spots on the back |
| 0907043 | gouty vein midge | Dasineura communis | a fly, causes pouch galls on the upper surface of leaves along major veins |
| 0907044 | linden looper | Erannis tiliaria | tend to eat only a portion of a leaf before moving to another |
| 0907045 | spiny looper | Phigalia titea | called "spiny loopers" because of hairy tubercles on each segment |
| 0907046 | fall cankerworm | Alsophila pometaria | dark form on maple, larvae complete feeding by the end of June, and drop to the ground to pupate |
| 0907047 | maple leafcutter | Paraclemensia acerifoliella | series of holes made by larvae |
| 0907049 | maple trumpet skeletonizer | Catastega aceriella | trumpetlike tubes of frass and silk constructed-close-up of trumpet construction |
| 0907052 | pear thrips | Taeniothrips inconsequens | have narrow wings that are fringed with hairs |
| 0907053 | woolly alder aphid | Prociphilus tessellatus | colony, covered with white, waxy strands |
| 4836001 | spider mites | close-up on spruce foliage | |
| 4836002 | whitespotted sawyer | Monochamus scutellatus | beetle which chews on bark on the undersides of twigs |
| 4836003 | pine leaf chermid | Pineus pinifoliae | winged adult with reddish eggs under wings can be found on previous year's needles |
| 4836004 | pine needle scale | Chionaspis pinifoliae | heavy infestation on mugo pine |
| 4836005 | European pine sawfly | Neodiprion sertifer | eggs are laid in slits in needles in the fall |
| 4836006 | European pine sawfly | Neodiprion sertifer | are often seen in pairs on individual needles |
| 4836007 | European pine sawfly | Neodiprion sertifer | larvae are often seen in pairs on individual needles |
| 4836008 | white pine aphid | Cinara strobi | colonies are often accompanied by ants, who feed on the honeydew secreted by the aphids |
| 4836009 | white pine aphid | Cinara strobi | Note ants feeding on the honeydew secreted by the aphids |
| 4836010 | white pine weevil | Pissodes strobi | look for adult near the terminal leader in early spring |
| 4836011 | eastern spruce gall adelgid | Adelges abietis | new galls |
| 4836013 | yellowheaded spruce sawfly | Pikonema alaskensis | |
| 4836014 | yellowheaded spruce sawfly | Pikonema alaskensis | |
| 4836015 | yellowheaded spruce sawfly | Pikonema alaskensis | larvae prefer to feed on current-year foliage; older foliage may be eaten when new filiageis compeletely gonel |
| 4836016 | oystershell scale | Lepidosaphes ulmi | the "armor" may be lifted to expose a tiny legless adult female or batch of eggs |
| 4836017 | oystershell scale | Lepidosaphes ulmi | the "armor" may be lifted to expose a thiny legless adult female or a batch of eggs |
| 4836018 | birch lace bug | Corythucha pallipes | close-up of an adult showing the lacelike forewings |
| 4836019 | birch lace bug | Corythucha pallipes | close-up of adult showing the lacelike wings |
| 4836020 | birch leafminer | Fenusa pusilla | larvae make blotch mines which eventually give leaves a brown, wrinkled appearance |
| 4836021 | bronze birch borer | Agrilus anxius | raised welts caused by tunneling |
| 4836022 | Japanese beetle | Popillia japonica | and damage |
| 4836023 | Japanese beetle | Popillia japonica | feeding gregariously, may skeletonize leaves completely |
| 4836025 | honeylocust plant bug | Diaphnocoris chlorionis | and immature feed on foliage, causing chlorosis, leaf distortion and spotting |
| 4836026 | honeylocust pod gall midge | Dasineura gleditchiae | larvae feed on newly-emerged leaves, prohibiting them from developing normally and initiating formation of pod-like galls |
| 4836027 | honeylocust pod gall midge | Dasineura gleditchiae | larvae feed on newly-emerged leaves, prohibiting them from developing normally and initiating formation of pod-like galls |
| 4836028 | maple spindlegall mite | Vasates aceriscrummena | cause galls that are greenish with reddish-pink tinges |
| 4836029 | bruce spanworm | Operophtera bruceata | they may vary in coloration, all have distinct white lines on the back and sides |
| 4836030 | mountain-ash sawfly | Pristiphora geniculata | larvae consume all but mid veins on leaves |
| 4836031 | mountain-ash sawfly | Pristiphora geniculata | when larvae are disturbed, they tend to rear up into an S-shaped position |
| 4836032 | gypsy moth | Lymantria dispar | all but the larger veins and midribs are consumed by late instar larvae |
| 4836033 | gypsy moth | Lymantria dispar | consume all but the midveins of leaves |
| 4836034 | gypsy moth | Lymantria dispar | large larva tend to feed at night |
| 4836035 | spider mites | close-up on spruce foliage, note speckled damage | |
| 4836036 | maple trumpet skeletonizer | Catastega aceriella | close-up of trumpet construction by larva |
| 4836037 | maple trumpet skeletonizer | Catastega aceriella | close-up of trumpet construction by larva |
| 4836038 | bronze birch borer | Agrilus anxius | raised welts caused by tunneling |
| 4836039 | introduced pine sawfly | Diprion similis | spend winter in cocoons on foliage twigs, and other substrates |
| 4836040 | spider mites | mottled discloration caused by heavy activity | |
| 4836041 | pine needle scale | Chionaspis pinifoliae | heavy infestation on mugo pine |
