Historic, Archive Document Do not assume content reflects current scientific knowledge, policies, or practices. ae Forest Insect and ai Disease Conditions | Service a in the Intermountain Region { 1992 an7 | (sf? ery NATIONAL | 44 FOREST a's ae NP eaTee) (B P re h¢ TOLYABE F ISHLAKE NATIONAL NATIONAL CALIF FOREST C? FOREST Ses 5 7 ; is, . a > ' at _s aes 4 ¢ ma) - = | oPh 7 ; ; 7 : j - ~ 7 7 a = ® ‘ 4 - ¥ : = i ~~ - : ae * " % : G4 - > v — —_ i] ep Ksoe 7 7 - 7 ai: 7 7 : FOREST INSECT AND DISEASE CONDITIONS in the Intermountain Region 1992 Compiled by: A. Knapp D. Hansen V. DeBlander R. Williams L. LaMadeleine Forest Pest Management State and Private Forestry USDA Forest Service Intermountain Region 324 - 25th Street Ogden, Utah 84401 September 1993 FOREST PEST MANAGEMENT INTERMOUNTAIN REGION Soa aemememmmmmmmmmmmmmememmmmmmmersmmmmmmmmme see me nee eee eee eee Regional Office 324 - 25th Street Ogden, Utah 84401 (801) 625-5257 FTS (801) 625-5257 FAX (801) 625-5127 David G. Holland Group Leader Garth E. Baxter Pesticide Coordinator Ogden Field Office 4746 South 1900 East Ogden, Utah 84403 (801) 476-9720 FTS (700) 321-9720 FAX (801) 479-1477 Leon LaMadeleine Plant Pathologist/ Ogden Field Office Representative John A. Anhold Entomologist Dawn E. Hansen Entomologist A. Steven Munson | Entomologist John C. Guyon Plant Pathologist Valerie L. DeBlander Forestry Technician Gary J. Otwell Biological Technician Alan D. Dymerski Forestry Technician Nancy P.Wright Computer Assistant Boise Field Office 1750 Front Street, Room 202 Boise, Idaho 83702 (208) 364-4220 FTS (208) 364-4220 FAX (208) 364-4111 Ralph E. Williams Plant Pathologist/ Boise Field Office Representative Ralph W. Thier Entomologist Julie C. Weatherby Entomologist James T. Hoffman Plant Pathologist Joy C. Roberts Computer Programmer Analyst K. Andrew Knapp Biological Technician Philip J. Mocettini, Jr. Biological Technician Richard L. Halsey Biological Technician Sara Stolz Biological Technician Thomas N. Barbouletos Forester Janet Cheney Office Management Assistant iv TABLE OF CONTENTS ee Page Subject Introduction 1 Résumé of Conditions , - Status of Insect Conditions | > Status of Disease Conditions 10 BZ Special Project Update 34 Recent Publications TABLE OF CONTENTS (CONT.) Page TABLES Table 1. Number of trees killed and acres infested by bark beetles in Region 4 during 1992 as determined by aerial detection surveys. Status of mountain pine beetle infestations by state during 1992. Status of spruce beetle infestations by state during 1992. Status of Douglas-fir beetle infestations by state during 1992. Status of western pine beetle infestations by state during 1992. Status of Jeffrey pine beetle infestations by state during 1992. Status of western balsam bark beetle infestations by state during 1992. Status of fir engraver beetle infestations by state during 1992. ONHAO AARWN Acres of defoliation by Douglas-fir tussock moth in Region 4 during 1992 as determined by aerial detection surveys. Status of Douglas-fir tussock moth defoliation by state during 1992. Acres of defoliation by western spruce budworm in Region 4 during 1992 as determined by aerial detection surveys. Status of western spruce budworm defoliation by state during 1992. FIGURES Figure 1. Bark beetle activity in Region 4 from 1981 to 1992 as determined by aerial detection surveys 25 M8. Defoliator activity in Region 4 from 1960 to 1992 as determined by aerial detection surveys. HP) 3 Areas infested by mountain pine beetle and Jeffrey pine beetle in Region 4 during 1992 as observed during aerial detection surveys. 26 Areas infested by spruce beetle in Region 4 during 1992 as observed during aerial detection surveys. PH Areas infested by Douglas-fir beetle in Region 4 during 1992 as observed during aerial detection surveys. 28 Areas infested by western pine beetle and pine engraver beetles in Region 4 during 1992 as observed during aerial detection surveys. 29 Areas infested by fir engraver beetle and western balsam bark beetle in Region 4 during 1992 as observed during aerial detection surveys. 30 Areas infested by Douglas-fir tussock moth in Region 4 during 1992 as observed during aerial detection surveys. 31 vi