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Steven Katovich's Images

Title: Forest Entomologist
Organization: USDA Forest Service
Unit: Forest Health Protection
Country: United States

Steve is a Forest Entomologist with the U.S. Forest Service who has worked most of his career in the Great Lakes Region.  His major work interest is in how forest management can influence insect populations.  Steve has a B.S. degree in forest management from the University of Wisconsin - Stevens Point, a M.S. degree in entomology from the University of Wyoming, and a Ph.D. in entomology from the University of Minensota.   
Remove Filters: Hymenoptera(X) Foliage Feeding Insects(X)
68 Images of 15 Subjects View Subject List View Image Details View Thumbnails

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Image Subject Name Scientific Name Description
1593016 redheaded pine sawfly Neodiprion lecontei Feeding damage on a red pine sapling
1593066 European pine sawfly Neodiprion sertifer Early spring defoliation of older needles on an ornamental Mugo pine.
1593075 redheaded pine sawfly Neodiprion lecontei
1593076 redheaded pine sawfly Neodiprion lecontei Group of sawfly larvae
1593077 redheaded pine sawfly Neodiprion lecontei
1593078 redheaded pine sawfly Neodiprion lecontei
5468292 pine false webworm Acantholyda erythrocephala
5468293 pine false webworm Acantholyda erythrocephala
5443550 larch sawfly Pristiphora erichsonii Characteristic curved twig caused by damage from egg laying
5443551 larch sawfly Pristiphora erichsonii Characteristic curved twig caused by damage from egg laying  
5443528 introduced pine sawfly Diprion similis
5443529 introduced pine sawfly Diprion similis
5443530 introduced pine sawfly Diprion similis
5443531 introduced pine sawfly Diprion similis
5443532 introduced pine sawfly Diprion similis
2121086 conifer sawfly Gilpinia frutetorum Photo taken on the Sand Dunes State Forest, Sherburne County, MN 2005
1398159 elm sawfly Cimbex americana Pink coloration is not common, most larvae are green to yellow in color.
1398038 elm sawfly Cimbex americana Pink coloration
1398265 birch leafminer Fenusa pusilla Brown blistered leaves on a paper birch, late spring in northern Minnesota
1199032 elm sawfly Cimbex americana Pink coloration is uncommon. Most larvae are yellow or green.
2121084 conifer sawfly Gilpinia frutetorum Photo taken on the Sand Dunes State Forest, Sherburne County, MN.
1457031 blackheaded ash sawfly Tethida barda Group of larvae on the under-side of an ash leaflet.
2121085 conifer sawfly Gilpinia frutetorum Photo taken on the Sand Dunes State Forest, Sherburne County, MN 2005
2121094 introduced pine sawfly Diprion similis Photo taken in Sept, 2005, Ramsey Co., MN
2121093 introduced pine sawfly Diprion similis In a defensive posture. Photo taken in Sept. 2005 in Ramsey Co., MN.
1398047 dogwood sawfly Macremphytus tarsatus Typical resting posture
1398063 blackheaded ash sawfly Tethida barda Group of later instar larvae on an ash leaflet
1398043 mountain-ash sawfly Pristiphora geniculata
1398075 butternut woolyworm Eriocampa juglandis
1398206 larch sawfly Pristiphora erichsonii Small group of larvae
1199011 birch leafminer Fenusa pusilla Leaf mines
1398259 birch leafminer Fenusa pusilla Early leaf mines
5424251 larch sawfly Pristiphora erichsonii Group of larvae
5424252 larch sawfly Pristiphora erichsonii single larva
5424253 larch sawfly Pristiphora erichsonii single larva
5424254 larch sawfly Pristiphora erichsonii single larva
5424243 elm leafminer Kaliofenusa ulmi Leafminer larvae inside leaf mines
5424244 elm leafminer Kaliofenusa ulmi Blister like leaf mine, larvae can be seen inside the mines.  
5424261 European pine sawfly Neodiprion sertifer Feeding damage to red pine by European pine sawfly, older needles are consumed, new-foliage is not eaten. 
5424255 European pine sawfly Neodiprion sertifer Classic old-foliage defolaition event by European pine sawfly.  New year foliage is undamaged. 
5424256 European pine sawfly Neodiprion sertifer European pine sawfly defoliation, early spring feeding on previous years needles.
5424257 European pine sawfly Neodiprion sertifer Cluster of larvae
5424258 European pine sawfly Neodiprion sertifer cluster of larvae
5424259 European pine sawfly Neodiprion sertifer Early season defoliation by European pine sawfly on a red pine.  Larvae eat only previous-years needles. 
5424260 European pine sawfly Neodiprion sertifer cluster of larvae
5370016 sawflies Caliroa spp. larvae feeding on the lower surface of a bur oak leaf
5369986 European pine sawfly Neodiprion sertifer Colony of larvae
5369987 European pine sawfly Neodiprion sertifer clump of feeding larvae
5370015 sawflies Caliroa spp. Group of larvae feeding on the undersurface of a bur oak leaf
5370017 sawflies Caliroa spp. feeding larvae, lower surface of a bur oak leaf
5370018 sawflies Caliroa spp. Larvae feeding on the lower surface of a bur oak leaf
5370019 sawflies Caliroa spp. Larvae feeding on the lower surface of a bur oak leaf
5370020 sawflies Caliroa spp. Larvae feeding on the lower surface of a bur oak leaf
5370021 sawflies Caliroa spp. feeding injury as it appears on the uppper surface of the leaf
2121087 conifer sawfly Gilpinia frutetorum
1398260 birch leafminer Fenusa pusilla
1398262 birch leafminer Fenusa pusilla A heavily infested landscape tree
1398054 elm sawfly Cimbex americana
5202064 introduced pine sawfly Diprion similis
5202065 introduced pine sawfly Diprion similis
5202066 introduced pine sawfly Diprion similis
5202067 introduced pine sawfly Diprion similis
5202088 European pine sawfly Neodiprion sertifer Photo taken in late May, Ramsey Co., MN
5202089 European pine sawfly Neodiprion sertifer photo taken in late May, Ramsey Co., WI
5202090 European pine sawfly Neodiprion sertifer Photo taken in May, Ramsey Co., MN
5202091 European pine sawfly Neodiprion sertifer Group of feeding larvae; Photo taken in Ramsey Co., MN
1484013 blackheaded ash sawfly Tethida barda
1479018 yellowheaded spruce sawfly Pikonema alaskensis Characteristic feeding damage on a young open-grown white spruce. Photo taken near Park Rapids, Minnesota.

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