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Image Subject Name Scientific Name Description
5388332 dieback This tree exhibits stagheading dieback.
5427708 Kabatina blight Kabatina juniperi Terminal dieback of arborvitae due to Kabatina juniperi
5427730 Kabatina blight Kabatina juniperi Death of juniper branch tip due to Kabatina juniperi
5427731 Kabatina blight Kabatina juniperi Fruiting bodies of Kabatina juniperi present at the base of infected juniper twig
5388278 bark beetles Pine bark beetles infect this virginia pine.
5388280 sawfly Macremphytus spp. A pine sawfly is on this needle.
5388279 sawfly Macremphytus spp. A pine sawfly clings to pine needles.
5388236 Eriophyid mite Eriophyid mites infect eastern white pine. 
5388235 Eriophyid mite Eriophyid mites are on this eastern white pine. 
5388176 mites Mites infect a fraser fir twig.
5388177 mites A mite infects a fraser fir.
5388178 mites A mite infects a fraser fir.
5405354 Rhizosphaera needle cast Rhizosphaera kalkhoffii Pycnidia and conidia of the fungus Rhizosphaera kalkhoffii under dark-field observation.
5405349 Rhizosphaera needle cast Rhizosphaera kalkhoffii Brown, infected needle with pycnidia of the fungus Rhizosphaera kalkhoffii coming from the stomata.
5405350 Rhizosphaera needle cast Rhizosphaera kalkhoffii Brown, infected needle with pycnidia of the fungus Rhizosphaera kalkhoffii coming from the stomata.
5405351 Rhizosphaera needle cast Rhizosphaera kalkhoffii Brown, infected needle with pycnidia of the fungus Rhizosphaera kalkhoffii coming from the stomata.
5405352 Rhizosphaera needle cast Rhizosphaera kalkhoffii Close-up of infected needle with pycnidia of the fungus Rhizosphaera kalkhoffii coming from the stomata.
5405353 Rhizosphaera needle cast Rhizosphaera kalkhoffii Pycnidia and conidia of the fungus Rhizosphaera kalkhoffii under dark-field observation.
5405355 Rhizosphaera needle cast Rhizosphaera kalkhoffii Pycnidia and conidia of the fungus Rhizosphaera kalkhoffii.
5405356 Rhizosphaera needle cast Rhizosphaera kalkhoffii Pycnidium and conidia of the fungus Rhizosphaera kalkhoffii.
5405357 Rhizosphaera needle cast Rhizosphaera kalkhoffii Conidia of the fungus Rhizosphaera kalkhoffii.
5405358 Rhizosphaera needle cast Rhizosphaera kalkhoffii Conidia of the fungus Rhizosphaera kalkhoffii.
5369025 Dothistroma needle blight Mycosphaerella pini Infected needles show brown spots with dark border and/or dead tips with dark border between dead and healthy portion of the needle.
5369026 Dothistroma needle blight Mycosphaerella pini Needles show brown spots with dark border.
5369027 Dothistroma needle blight Mycosphaerella pini Close-up of dead needle tip with black, spore-producing bodies ("acervuli") breaking through needle surface.
5369028 Dothistroma needle blight Mycosphaerella pini Spores of the anamorph fungus Dothistroma septosporum.
5368531 yellow-bellied sapsucker Sphyrapicus varius Holes in bark and wood neatly arranged in rows and columns.
5368532 yellow-bellied sapsucker Sphyrapicus varius Holes in bark and wood neatly arranged in rows and columns.
5369098 Stigmina leaf spots Stigmina spp. Off-colored needles usually older than the current year's needles.
5369099 Stigmina leaf spots Stigmina spp. Off-colored needles usually older than the current year's needles.
5369100 Stigmina leaf spots Stigmina spp. Close-up of several symptomatic needles. Note yellow flecking on needles is due to mite injury.
5369101 Stigmina leaf spots Stigmina spp. Needle showing fuzzy, black tufts rising from stomata which are not as well defined as with the needle cast disease caused by the fungus Rhizosphaera. Note yellow flecking on needles is due to mite injury.
5369102 Stigmina leaf spots Stigmina spp. Closer view of needle showing fuzzy, black tufts rising from stomata which are not as well defined as with the needle cast disease caused by the fungus Rhizosphaera. Note yellow flecking on needles is due to mite injury.
5369103 Stigmina leaf spots Stigmina spp. Closest view of needle showing fuzzy, black tufts rising from stomata which are not as well defined as with the needle cast disease caused by the fungus Rhizosphaera. Note yellow flecking on needles is due to mite injury.
5369104 Stigmina leaf spots Stigmina spp. View of several dark brown, spore-producing bodies ("conidiophores") and brown, multi-celled spores.
5369105 Stigmina leaf spots Stigmina spp. Closer view of several dark brown spore-producing bodies ("conidiophores") and brown, multi-celled spores.
5369106 Stigmina leaf spots Stigmina spp. View of two clumps of conidiophores and many brown, multi-celled spores.

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