CONTENTS No. 1, January, 1991 Capture Rates and Composition of Insect Prey of the Pitcher Plant Sarracenia purpurea James E. Cresswell A FieldS tudy of Host Sise Effects on Sex Ratio of the Parasitoid ‘Wasp Spalangia cameroni B. H. King The Quality of Pollination by Diurnal and Nocturnal insects Visiting Common Milkweed, Asclepias syriaca sas Ola Jennersten and Douglass H. Morse An Ant-aphid Interaction: ‘Formica fesca.a nd Aphthargelia symphoricarpi on Mount St. Helens. . Mark Andersen Experimental Manipulation of Herbivores in Native Tallgrass Praicie: Responses of Aboveground . Edward W. Evans Emergence of Stoneflies (Plecoptera) from the‘ Roseau River, Manitoba John F. Flannagan and Donald G. Cobb Differential Escape of Insects from Carnivereus Plant Traps .... Thomas C. Gibson Evidence of Genetic Dominance of the 13-year Life Cycle in Periodical Cicadas (Homoptera: Ci- cadidae: Magicicada spp.) ........ ...... Randel Tom Cox and C. E. Carlton Observations on the Ecology, Reproduction and Growth of the Burrowing Crayfish Fallicambarus (Creaserinus) fodiens (Decapoda: Cambaridae) in North-central Ohio .. M. James Norrocky Life History of the Least Darter Etheostoma microperca at the Northwestern Limits of Its Range ; . James D. Johnson and Jay T. Hatch Response ofA rtemisia tridentata ssp. wyomingensis and ‘Stipa thurberiana to Nitrogen Amend- ments ......Richard F. Miller, Paul S. Doescher and Jianguo Wang Effects of Seasonal Drought on Old-field Plant Communities . Eric K. Bollinger, Steven J. Harper and Gary W. Barrett Does Social Orgenization Influence Diversification? . ... .J ohn M. Marzluff and Kenneth P. Dial Yellow-bellied Marmots as Prey of Coyotes . . a . Dirk Van Vuren Response of Raptors to Reduction of a Gunnison’s Prairie Dog Population byP lague a Jack F. Cully, Jr. Combined Effects of Fire, Mound-b uilding by Pocket Gophers, Root Loss and Plant Size on Growth and Reproduction in Penstemon grandiflorus.. . Mark A. Davis, Jeff Villinski, Kirsten Banks, Jodi Buckman- Fifield, Jon Dicus and Susan Hofmann Notes and Discussion Response of Grasshoppers (Orthoptera: Acrididae) to Wildfire in a Southeastern Arizona Grassland . Carl E. Bock and Jane H. Bock Growth Patterns of Fox Squirrels in East-central Illinois Charles M. Nixon, Lonnie P. Hansen and Stephen P. Havera CONTENTS No. 2, April, 1991 Life History of the Leopard Darter Percina pantherina in Glover River, Oklahoma : . Paul W. James, O. Eugene Maughan and Alexander V. Zale Reproductive Seasea, Clutch Parameters and Oocyte Size of the Johnny Darter Etheostoma nigrum from Southwestern Mississippi Jeffrey D. Parrish, David C. Heins and John A. Baker Foraging Site Preferences and Relative Arboreality of Small Rodents in Florida Wayne C. Packer and James N. Layne Population Dynamics of Chaetogaster limnaci limnaei (Oligochaeta) as Affected by a Trematode Parasite in Helisoma anceps (Gastropoda) Jacqueline Fernandez, Timothy M. Goater and Gerald W. Esch Comparisons of Aboveground Arthropods in Burned, Mowed and Untreated Sites in Sandplain CONTENTS No. 1, January, 1991 Capture Rates and Composition of Insect Prey of the Pitcher Plant Sarracenia purpurea James E. Cresswell A FieldS tudy of Host Sise Effects on Sex Ratio of the Parasitoid ‘Wasp Spalangia cameroni B. H. King The Quality of Pollination by Diurnal and Nocturnal insects Visiting Common Milkweed, Asclepias syriaca sas Ola Jennersten and Douglass H. Morse An Ant-aphid Interaction: ‘Formica fesca.a nd Aphthargelia symphoricarpi on Mount St. Helens. . Mark Andersen Experimental Manipulation of Herbivores in Native Tallgrass Praicie: Responses of Aboveground . Edward W. Evans Emergence of Stoneflies (Plecoptera) from the‘ Roseau River, Manitoba John F. Flannagan and Donald G. Cobb Differential Escape of Insects from Carnivereus Plant Traps .... Thomas C. Gibson Evidence of Genetic Dominance of the 13-year Life Cycle in Periodical Cicadas (Homoptera: Ci- cadidae: Magicicada spp.) ........ ...... Randel Tom Cox and C. E. Carlton Observations on the Ecology, Reproduction and Growth of the Burrowing Crayfish Fallicambarus (Creaserinus) fodiens (Decapoda: Cambaridae) in North-central Ohio .. M. James Norrocky Life History of the Least Darter Etheostoma microperca at the Northwestern Limits of Its Range ; . James D. Johnson and Jay T. Hatch Response ofA rtemisia tridentata ssp. wyomingensis and ‘Stipa thurberiana to Nitrogen Amend- ments ......Richard F. Miller, Paul S. Doescher and Jianguo Wang Effects of Seasonal Drought on Old-field Plant Communities . Eric K. Bollinger, Steven J. Harper and Gary W. Barrett Does Social Orgenization Influence Diversification? . ... .J ohn M. Marzluff and Kenneth P. Dial Yellow-bellied Marmots as Prey of Coyotes . . a . Dirk Van Vuren Response of Raptors to Reduction of a Gunnison’s Prairie Dog Population byP lague a Jack F. Cully, Jr. Combined Effects of Fire, Mound-b uilding by Pocket Gophers, Root Loss and Plant Size on Growth and Reproduction in Penstemon grandiflorus.. . Mark A. Davis, Jeff Villinski, Kirsten Banks, Jodi Buckman- Fifield, Jon Dicus and Susan Hofmann Notes and Discussion Response of Grasshoppers (Orthoptera: Acrididae) to Wildfire in a Southeastern Arizona Grassland . Carl E. Bock and Jane H. Bock Growth Patterns of Fox Squirrels in East-central Illinois Charles M. Nixon, Lonnie P. Hansen and Stephen P. Havera CONTENTS No. 2, April, 1991 Life History of the Leopard Darter Percina pantherina in Glover River, Oklahoma : . Paul W. James, O. Eugene Maughan and Alexander V. Zale Reproductive Seasea, Clutch Parameters and Oocyte Size of the Johnny Darter Etheostoma nigrum from Southwestern Mississippi Jeffrey D. Parrish, David C. Heins and John A. Baker Foraging Site Preferences and Relative Arboreality of Small Rodents in Florida Wayne C. Packer and James N. Layne Population Dynamics of Chaetogaster limnaci limnaei (Oligochaeta) as Affected by a Trematode Parasite in Helisoma anceps (Gastropoda) Jacqueline Fernandez, Timothy M. Goater and Gerald W. Esch Comparisons of Aboveground Arthropods in Burned, Mowed and Untreated Sites in Sandplain Grasslands on Nantucket Island Peter W. Dunwiddie Biochemical Evidence for Rapid Changes in Heterozygosity in a Population of Periodical Cicadas (Magicicada tredcassini) Alvan A. Karlin, Kathy S. Williams, Kimberly G. Smith and Derrick W. Sugg Foraging Phenology of the Formosan Subterranean Termite (Isoptera: Rhinotermitidae) in Louisi- Keith S. Delaplane, Arnold M. Saxton and Jeffrey P. La Fage Annual Cycle of Gonad Maturation, Characteristics of Copulating Pairs and Egg-laying Rates in Cavernicolous Crickets, Particularly Hadenoecus subterraneus (Insecta: Orthoptera) ; Michelle M. Cyr, Eugene H. Studier, Kathleen H. Lavoie and Kelly L. McMillin The Effect of Caudal Lamellae Loss on Swimming Speed of the Damselfly Argia moesta (Hagen) (Odonata: Coenagrionidae) James V. Robinson, Douglas A. Hayworth and Michael B. Harvey Growth, Survivorship and Longevity of Painted Turtles Chrysemys picta in a Southwestern Michigan Nat B. Frazer, J. Whitfield Gibbons and Judith L. Greene Habitat Selection of Rana pipiens and Rana sylvatica during Exposure to Warm and Cold Temperatures Lawrence E. Licht Observations on the Breeding Immigration of Wood Frogs Rana sylvatica Reintroduced in East- central Missouri David Guttman, Judith E. Bramble and Owen J. Sexton Shifts in the Effects of Tuft-weaving Midges on Filamentous Algae Mary E. Power Web Orientation by Nephila clavipes in Southeastern Texas Linden Higgins and Keith McGuinness Comparison of Presettlement, Second-growth and Old-growth Forest on Six Site Types in the Illinois Shawnee Hills .. James S. Fralish, Fred B. Crooks, Jim L. Chambers and Francis M. Harty Productivity of Creosotebush Foliage and Associated Canopy Arthropods Along a Desert Roadside David C. Lightfoot and Walter G. Whitford Affinities between Liatris cokeri Pyne & Stucky (Asteraceae), a Sandhills Endemic of the Carolinas, and Its Widely Distributed Relative, L. graminifolia Willd Jon M. Stucky Age Structure Patterns in Abies amabilis Stands of the Cascade Mountains Mark V. Wilson Changes in Red Spruce Populations in Montane Forests of the Appalachians, 1982-1987 W. L. Silver, T. G. Siccama, C. Johnson and A. H. Johnson Effects of Pollen-load Size on Sporophyte Competitive Ability in Two Epilobium Species Allison A. Snow A Comparison of Three Methods for Collecting Dipteran Insect Larvae Which Inhabit the North- ern Pitcher Plant (Sarracenia purpurea) Anthony J. Nastase, Carlos De La Rosa and Sandra J. Newell Bioenergetics of the Golden Mouse on Experimental Sumac Seed Diets Melissa A. Jewell, Molly K. Anderson and Gary W. Barrett Effects of Spider Predation on Insect Visitation and Pollination of Queen Anne’s Lace Kevin Wilkinson, David Westmoreland and Gail R. Westmoreland Crossing Relationships of Mimulus glabratus var. michiganensis (Scrophulariaceae) Robert K. Vickery, Jr. Arboreal Foraging and Palatability of Tree Leaves to Woodchucks Robert K. Swihart and Peter M. Picone