Vol. 24, No. 2 SUlTlmer 1991 THE GREAT LAKES ENTOMOLOGIST PUBLISHED BY THE MICHIGAN ENTOMOLOGICAL SOCIETY ,,­ I THE GREAT LAKES ENTOMOLOGIST Published by the Michigan Entomological Society Volume 24 No.2 ISSN 0090-0222 TABLE OF CONTENTS Dispersal of Fenusa dohrnii (Hymenoptera: Tenthredinidae) from an Alnus short­ rotation forest plantation Elwoqd R. Hart, Richard B. Hall and Roger D. Hanna ........................ 63 Predation by amphibians and small mammals on the spruce budworm (Lepidoptera: Tortricidae) Daniel T. Jennings, Hewlette S. Crawford, Jr. and Malcolm L. Hunter, Jr. 69 Alarm pheromone in a gregarious poduromorph collembolan (Collembola: Hypogastruridae) Foster Forbes Purrington, Patricia A. Kendall, John E. Bater and Benjamin R. Stinner ................................................. 75 A review of the genus Gryllus (Orthoptera: Gryllidae), with a new species from Korea Richard D. Alexander ...................................................... 79 An annotated checklist of the Lepidoptera of the Beaver Island archipelago, Lake Michigan Dennis Profant ........................................................... 85 Noteworthy range extensions of three emesine species (Heteroptera: Reduviidae) J. E. McPherson .......................................................... 99 An array of spatulate sensillae on antennae of male Brachymeria lasus (Hymenop­ tera: Chalcididae) D. H. Simser and H.C. Coppel ............................................ 103 Foodplant processing adaptations in four Hyalophora species (Lepidoptera: Satur­ niidae): Regional and taxonomic specialization J. Mark Scriber and Eric Grabstein ......................................... 109 A trap-nest design for small trap-nesting Hymenoptera John M. Fricke .......................................................... 121 Trap-nest bore diameter preferences among sympatric Passaloecus spp. (Hymenop­ tera: Sphecidae) John M. Fricke .......................................................... 123 COVER ILLUSTRATION Buckeye butterfly, Junonia coenia Hubner (NymphaIidae) nectaring on Apocynum. Photo by Brian Scholtens. THE MICHIGAN ENTOMOLOGICAL SOCIETY 1990--1991 OFFICERS President Eugene Kenaga President-Elect Fred Stehr E",""utive Secretar;. M.C. Nielsen Joumal Editor Mark F. O'Brien ... ewslener Editor Robert Haack The ~tichigan Emomological Society traces its origins to the old Detroit Entomological Society and was organized on 4 :>iovember 1954 to "...promote the science of entomology in all its branches and by all feasible means, and to advance cooperation and good fellowship among persons interested in entomology." The Society attempts to facilitate the exchange of ideas and information in both amateur and professional circles, and encourages the study of insects by youth. Membership in the Society, which serves the North Central States and adjacent Canada, is open to all persons interested in entomology. There are four paying classes of membership: Student (including those currently enrolled as college sophomores) - annual dues $4.00 Active-annual dues $8.00 lnstitutional-annual dues $20.00 Sustaining-annual contribution $25.00 or more Life-$J60.oo Dues are paid on a calendar year basis (Jan. I-Dec. 31). Memberships accepted before July I shall begin on the preceding January I; memberships accepted at a later date shall begin the following January I unless the earlier date is requested and the required dues are paid. All members in good standing receive the Newsletter ofthe Society, published quarterly. All active and sustaining members may vote in Society affairs. All dues and contributions to the Society are deductible for Federal income tax purposes. SUBSCRIPTION INFORMATION Institutions and organizations, as well as individuals not desiring the benefits of membership, may subscribe [0 The Greot Lakes Entomologist at the rate of $15.00 per volume. The journal is published quanerly; subscriptions are accepted only on a volume (4 issues) basis. Single copies of The Great Lakes EnTOmologisr are a\'ailable at $4.25 each, with a 20 percent discount for 25 or more copies sent to a single address. !l.nCROFIL~ EDITIO:>i: Positive nticrofJ.!m copies of the current volume of The Great Lakes EnTOmolo­ gisr "iII be available at nominal cost, to members and bona fide subscribers of the paper edition only, at the end of each volume year. Please address all orders and inquities to University Microfilms, Inc., 300 Zeeb Road. Ann Arbor, ~tichigan 48106, USA. Inquiries about back numbers, subscriptions and Society business should be directed to the Executive So.,etaI)', ~fichigan Entomological Society, Department of Entomology, Michigan State University, East Lalli-mg. ~tichigan 48824-1115, CSA. Manuscripts and related correspondence should be directed to the EdiIOr I see inside back cover). Copyright :s 1991. The Michigan Entomological Society 1991 THE GREAT LAKES ENTOMOLOGIST 63 DISPERSAL OF FENUSA DOHRNII (HYMENOPTERA: TENTHREDINIDAE) FROM AN ALNUS SHORT·ROTATION FOREST PLANTATION 2 Elwood R. Hartl, 2, Richard B. HaU , and Roger D. Hanna2 ABSTRACT The European alder leafminer, Fenusa dohrnii, is a defoliating insect pest of Alnus in short-rotation forest plantations. A 2-year study was performed to quan­ tify movement from infested stands to uninfested areas. Sticky traps and potted monitor trees were installed at different locations within and at various distances from (0,5, 10, and 20 m) an infested stand to measure adult flight and oviposition activity, respectively. Trap catch and oviposition activity fell off sharply with dis­ tance, few insects being trapped or eggs laid at distances of 5 m or greater from the infestation. The genus Alnus, the alders, has been considered a promising group for biomass plantations because of its rapid growth and symbiotic nitrogen-fixing capabilities. Genetic improvement work with Alnus began at Iowa State University in 1976 with a range-wide collection of germplasm for European black alder, A. glutinosa Gaertn. (Hall et al. 1983). Selected populations of other Alnus species have been grown here as well. In 1982, the European alder leafminer, Fenusa dohmii (Tischbein) (Hymenop­ tera: Tenthredinidae), began developing as a pest in our local plantations (Hart et al. 1991). By 1985, much defoliation was obvious, prompting concern about the impact of the insect on the plantations and possible management measures. Because little was known about the insect in the north-central United States, a series of studies was initiated in 1986 to define the.field biology and impact of the insect in the plantation environment. Sustained yield from biomass plantations involves having all growth and coppice­ regrowth stages of trees present at various proximities within the growing area. Tree growth and survivorship are especially sensitive to growing conditions, including defoliation effects, in the first 2 years after planting (Meridian Corporation, 1986). The ability of F. dohrnii to move from infested to uninfested, newly-planted stands can thus determine, in part, the impact that it may have on the plantations and how they should be designed. When a plantation is cut, the first adult flight of European alder leafminer in the spring precedes most of the resprouting of stems and leaves on the cut alder stumps (Hart et al. 1991). This provides an opportunity to reduce the leafminer population significantly in the area for a time. Reinfestation, however, may occur from late­ emerging insects and from adjacent uncut stands. Adult dispersal is therefore impor­ tant in the reinfestation of harvested areas. IDepartment of Entomology, Iowa State University, Ames, IA 5OO11. 2Department of Forestry, Iowa State University, Ames, IA 50011. 64 THE GREAT LAKES ENTOMOLOGIST Vol. 24, No.2 aJI harvests occurred H81Vested Harvested at the end 0' the growing i rmn Harvested 1983,1986. m 1983,1985, oUnharvested l1li11 1963. 1~66 ,sa III ~98B. ~987 sesson .. 19B7 Crona/Trial· Planted 1981 [J Bottomland AUuvial Flat • 1967Monitoring stations o 1988 Monftoring statiOns • 1987188 Monitoring stations ·0· • <I • .0. Figure 1. European alder leafminer sticky trap and monitor tree locations, Alnus plantation, Rhodes, Iowa, 1987, 1988. Because only the adult stage of the leafminer is capable of significant interplant movement, a study was designed to quantify adult movement from known infested stands to uninfested areas. The major objectives of this study were: (1) to determine the distances that the insect can migrate in significant numbers from infested stands to uninfested areas and (2) to use this information to project practical planting distances from such infested areas. MATERIALS AND METHODS The research was performed in central Iowa at the Iowa State University Rhodes Experimental Farm. The plantation site lies in a narrow stream valley, surrounded by low, forested hills. The site is well-buffered from the prevailing winds, which in the growing season are mostly from the southeast. The first alders were planted at this location in 1979, with additional plantings added each year as needed by the breeding and selection program. In 1987, two infested, unharvested plantings were selected as European alder leafminer source areas (Fig. 1). Four replications were established, two at Unit 4 of the 1979 provenance test plantings and two at the 1981 clonal trial plantings. Each replication was organized along a transect line away from a planting into an open, grassy field. For each area, a single monitor station was established within the planting. Each replication also