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List of Idaho Scolytidae (Coleoptera) and Notes on New Records

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List of Idaho Scolytidae (Coleoptera) and Notes on New Records Great Basin Naturalist Volume 47 Number 3 Article 4 7-31-1987 List of Idaho Scolytidae (Coleoptera) and notes on new records Malcom M. Furniss University of Idaho, Moscow, Idaho James B. Johnson University of Idaho, Moscow, Idaho Follow this and additional works at: https://scholarsarchive.byu.edu/gbn Recommended Citation Furniss, Malcom M. and Johnson, James B. (1987) "List of Idaho Scolytidae (Coleoptera) and notes on new records," Great Basin Naturalist: Vol. 47 : No. 3 , Article 4. Available at: https://scholarsarchive.byu.edu/gbn/vol47/iss3/4 This Article is brought to you for free and open access by the Western North American Naturalist Publications at BYU ScholarsArchive. It has been accepted for inclusion in Great Basin Naturalist by an authorized editor of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. LIST OF IDAHO SCOLYTIDAE (COLEOPTERA) AND NOTES ON NEW RECORDS' Makolin M. Fiirniss" and James B. Johnson' Abstract —Reported are 105 species of Scolytidae (Coleoptera) from Idaho. About one-third of these are rarely collected, of which 22 species are known from a single locality each. Twelve species reported from Idaho for the first time are; Carphobonis carri Swaine, C. sansoni Swaine, Phloeosinus huferi Blackman, Conophthorus monophyllae Hopkins, Dnjocoetes hetulae Hopkins, Ips confusus (LeConte), Pitijopiitlwrus absonus Blackman, P. aqtiilus Black- man, P. blandus Blackman, P. dclctus LeConte, P. sculptor Blackman, and Xyleboiinus saxeseni (Ratzeburg). Significant extensions of the known distributions in Idaho are reported for seven other scoKtids; Alnipha^iis aspericol- lis (LeConte), Dendroctonus murraijanac Hopkins, Phloeotribtis lecontei Schedl, Procnjphalus mucronatus (LeConte), Trypophloeus populi Hopkins, Xylcbonis dispar {Fahricius), andX. intnisus Blandford. Xyleborus dispar especially needs study in anticipation that it may become increasingK important in Idaho fruit trees and other woody plants including ornamentals and shade trees. Idaho has an abundance of trees and shrubs the future, either to settle quietly into their that can serve as scolytid hosts, but the new niches or to attain importance in orna- scolytids of Idaho have not been surveyed mentals, fruit trees, or forests. So, the list will systematically to determine the total number likely change as our work continues. of species, their specific hosts, and their dis- Besides the list of 105 species and their tributions within the state. Such information abundance, we present notes on 12 species is fundamental to the orderly development of reported from Idaho for the first time and the natural history of this region and will facili- major range extensions within Idaho for 7 tate scolytid research. For example, the genus other species. All measurements of host mate- Dendroctonus contains several of our most rial are in metric units, including distances abundant and destructive species (e.g., D. from landmarks, although the latter are in- ponderosae Hopkins) and one of the least variably in miles on labels of pinned museum abundant and least destructive (D. mur- specimens. Names of collectors are given as rayanae Hopkins). By knowing where D. per labels or as stated in the literature. The murraijanac occurs, it can be studied and the numbers of known pinned adult specimens circumstances that keep it from becoming follow the collection data. Specimens de- abimdant may prove important in managing posited in the University of Idaho, William F. species that are sometimes damaging. Barr Entomological Museum, are designated Since 1984 we have compiled a comprehen- UI-WFBM. Known repositories of others are sive list of Idaho scolytids from literature, mu- abbreviated as follows: SLW -^ S. L. Wood seum specimens, and our own field collec- Collection, Brigham Young University, tions. This task was stimulated by the recent Provo, Utah; WSU = Washington State Uni- availabilitv of the works of R. L. Furniss and versity, Pullman, Washington; CNC = Cana- V. M. Carolin (1977), D. E. Bright, Jr. (1981), dian National Collection, Ottawa, Ontario, and, especially, S. L. Wood's monograph on Canada. In other cases, we cite the literature North American bark and ambrosia beetles from which we acquired the record. (1982). Twenty-two Idaho species are represented by only single specimens or localities. Addi- Species Newto Idaho tional species doubtless occur in Idaho but Subfamily Hylesininae have not yet been found or reported, and some exotic species may find their way here in Carphoborus carri Swaine University of Idaho Agricultural Experiment Station Research Paper No 873.3 "Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, Idaho 83843. 375 376 Great Basin Naturalist Vol. 47, No. 3 Type LOCALITY: Edmonton, Alta., Canada. Subfamily Scolytinae Biology: Unstudied. Polygynous; breeds in Conophthorus monophijUae Hopkins relatively dry, dead bark of boles of small, suppressed spruces and unthrifty, lower Type locality': Ventura Co., Calif. Biol- branches of living trees. Galleries deeply ogy: Unstudied. In other studied species, the female bores into the in at score the wood (Wood 1982). Distribution cone base spring the beginning of the second year of cone AND NOTES: CANADA: Alta., Man., New growth. The egg gallery extends the length of Brun., NWT, Yuk.; USA: Alas., Mont., S. the cone center. Progeny mature during that Dak., Wyo., IDAHO: North shore of Henrys summer within the cone and generally over- Lake, Fremont Co., 21-VII-1985, Picea winter there, although in the case of C. pon- glauca, M. M. Furniss and B. Johnson (19 J. derosae Hopkins (^ C. lamhertianae Hop- 9, 17 d UI-WFBM). A southernmost popula- kins), some adults emerge in the fall and tion of white spruce, Plcea glauca (Moench) overwinter in the tips of live twigs (R. L. Voss, grows on boggy ground along the north Furniss and V. M. Carolin 1977). DISTRIBU- shore of Henrys Lake. The trees may be hy- TION and NOTES: Calif., Nev., Ut., IDAHO: brids ofwhite and Engelmann spruce. Five C. City of Rocks, Cassia Co., 25-VII-1984, Pinus carri new adults were taken from a lower monophi/Ua cones, M. M. Furniss and J. B. branch of a recently dead, standing tree that Johnson' (12 UI-WBFM, 5 SLW). Attacked was 50 cm diameter and 37 m tall. cones common, most contained a single beetle, mired and dead in profuse resin ex- Carphobonis sansoni Swaine uded from entrance located at base of cone (i.e., often unsuccessful). Type locality: Banff, Alta. , Canada. Biol- ogy: Unstudied. Polygynous; breeds in bark Dryocoetes betidae Hopkins of the bole of unthrifty, suppressed seedlings Type LOCALiri': Grant Co., Va. Biology: and in unthrifty, shaded-out branches of Unstudied. Polygynous. It infests bark of large, living, standing trees (Wood 1982). Dis- stumps and the bole and limbs of recently cut tribution AND NOTES: CANADA: Alta.; USA: and unthrifty trees (Wood 1982). Distribu- Colo., Ore., Ut., Wyo., IDAHO: Emigration tion AND NOTES: CANADA: Alta., B.C., 24 of Montpelier, Bear Campground, km W Newf., N.B., Ont., Que.; USA: D.C., Fla., Lake Co., 24-VII-1984, Picea engehnannii, La., Me., Mich., Miss., Mont., N.H., N.J., M. M. Furniss and J. B. Johnson. (1 UI- N.Y., Calif., Penn., Va., V.I., Vt., W.Va., WFBM). Collected from a shaded-out limb on Wash., IDAHO: Reeder Bay, Priest Lake, a wind-thrown tree. Bonner Co., 6-VIII-1985, Betida papyrifera, M. M. Furniss, J. B. Johnson, and S. J. Cast Phloeosinus hoferi Blackman (13 UI-WFBM). Parents, larvae, and one pupa in phloem of the trunk of a 46-cm-diame- Type locality: Ute Pass, Colo. BiologY: ter tree toppled by snow in previous winter. Unstudied. Monogynous. Infests bark of Sporadic infestation also noted in 15-cm-di- small branches and twigs of dying trees (Wood ameter basal portion of a tree that had broken 1982). Distribution and notes: CANADA: off at 3 m height. B.C.; USA: Ariz., Calif., Colo., Nev., N.M., N.Dak., S.Dak., Tex., Ut., Wyo., IDAHO: Ips confusus (LeConte) Two km N of Almo, Cassia Co., 25-VII-1984, Type locality: Southern Calif. BiologY: Juniperus osteosperma, M. M. Furniss and Polygynous. Three to four generations per B. Reared from a J. Johnson (1 UI-WFBM). year reported in southwestern states (fewer 23-cm-diameter felled, limbed tree; probably likely in Idaho). Adults may overwinter en emerged from branches 2-10 cm diameter. masse under bark of main stem, thoroughly At time of collection (25-VII-1984), mature scoring the wood surface (Chansler 1964). larvae and pupae were present, but these may Distribution and noteS: MEXICO: Baja have been exclusively P. serratus LeConte, a Calif., Chih.; USA: Ariz., Calif., Colo., Nev., larger species that was abundant, especially in N.M., Ut., Tex., (Wyo.), IDAHO: City of the trunk. Rocks, Cassia Co., Pinus monophylla, 14-VI- July 1987 FURNISS, JOHNSON: IDAHO SCOLVTIDAE 377 1968, W. F. Ban- (2 UI-WFBM); same local- Pityophthonis hlandus Blackman ity, 25-VII-1984, M. M. Furniss and J. B. Type locality: Argus Mountains, Calif. BI- Johnson (4 UI-WFBM, 3 SLW). Mainly ten- OLOGY: Unstudied. Polygynous. Specimens eral, but some darkened, adults in base of a collected from 3-8-cm-diameter branches dead 23-cm-diameter standing tree with and tree tops (Wood 1982). Distribution: bright orange foliage. Some Pityophthonis in- USA: Ariz., Calif., Colo., Nev., Ut., IDAHO: termingled; Dendroctoniis valens LeConte City of Rocks, Cassia Co., 25-VII-1985, Pimis and Hylurgops porosus LeConte below. monophylla, M. M. Furniss and J. B. Johnson (10 UI-WFBM, 4 CNC). Pityophthonis absomis Blackman Pityophthonis deletus LeConte Type locality: Mineral King, Calif. BIOL- OGY: Unstudied. Polygynous. Reported fairly Type locality: Veta Pass, Colo. BiologY: common at high elevation (Bright 1981) and Unstudied. Polygynous. The species is ex- infesting small branches and in shaded-out tremely variable and as defined may include small trees (Wood 1982). Distribution and more than one species or subspecies (Bright NOTES: CANADA: Alta., B.C.; USA: Calif., 1981).
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