United States Department of Agriculture Death-Watch Forest Service and Spider Beetles Forest Products Laboratory of Wisconsin General Technical Coleoptera: Ptinidae Report FPL–GTR–209 Rachel A. Arango Daniel K. Young Abstract Acknowledgments Critical insights relating to the distribution, natural history, This work would not have been possible without the sup- and abundance of Ptinidae sensu lato, in Wisconsin and port of countless individuals. We thank the Forest Products North America have been overlooked in many faunistic sur- Laboratory for funding support (Arango), especially to veys and taxonomic studies, in part due to the relative diffi- Carol Clausen, Frederick Green III, and Michael Ritter. Spe- culty in working with the contractile nature of many species cial thanks to Dr. Ken Raffa and Dr. R. Chris Williamson for and complexity of certain taxonomic characters. Work by careful review of the project and manuscript. We acknowl- H.C. Fall, R.E. White, and T.K. Philips significantly aided edge Tom Kuster for the scanning electron microscope in the understanding of this family, although numerous images, Regis Miller and Mike Wiemann for wood identi- genera are still in need of major revision. This study is the fications, Tivoli Gough for assistance in preparing figures, first state-wide survey of Wisconsin Ptinidae. It provides a James Anderson for editing support, and Dan Lindner for comprehensive list of all ptinid species documented from fungal identifications. We are also indebted to colleagues Wisconsin, with taxonomic keys for their identification. in the “Young Lab”: Craig Brabant, Peter DeVries, John Profiles for each species were compiled, including a taxo- Dorshorst, Jeff Gruber, Kyle Johnson, Nadine Kriska, Dan nomic overview, capsule description, species diagnosis, and Marschalek, Michele Price, and Andrew Williams. overview of their natural history. Specimens were collected Thanks to the Wisconsin Chapter of The Nature Conser- using a variety of methods during two field seasons; Lind- vancy and Wisconsin Department of Natural Resources for gren funnel traps and flight intercept traps were particularly authorizing collecting permits and support for survey proj- significant. Trap samples from previous faunistic surveys of ects, as well as to the numerous pest control companies that other taxa and mounted specimens from private and public were instrumental in obtaining information regarding stored research collections were also examined. Seventy-eight product pests (especially Dan Keohane, Randy Kalk, and Wisconsin pest control companies and the University of Mark Johll from Alternative Pest Solutions and Ted Snyder, Wisconsin insect diagnostic laboratory were consulted for from Batzner Pest Control). We gratefully acknowledge information regarding indoor pest species of Ptinidae. Dur- Phil Pellitteri whose extensive knowledge of stored product ing this survey, 28 genera and 64 species of Ptinidae were insects and uncanny ability to identify insect pieces sent in documented from the state from 2,063 specimens. Of these, to the diagnostic lab greatly aided the project. 14 genera and 46 species are considered new state records, a 72% increase from the number of species known previously. We thank Keith Philips for numerous taxonomic discussions with respect to Ptinidae and for providing initial specimen Keywords: Ptininae, Eucradinae, Ernobiinae, Anobiinae, determinations to help us develop a reference collection. Ptilininae, Xyletininae, Dorcatominae, Mesocoelopodinae Tom Phillips graciously provided pheromone lures. We thank the curators who allowed access to collections under their care: Steve Krauth, University of Wisconsin Insect Research Collection, James Boone, Field Museum of Natu- June 2012 ral History, and Creighton Freeman, Charles A. Triplehorn Arango, Rachel A.; Young, Daniel K. 2012. Death-watch and spider beetles collection at The Ohio State University. of Wisconsin—Coleoptera: Ptinidae. General Technical Report FPL-GTR-209. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 158 p. A limited number of free copies of this publication are available to the public from the Forest Products Laboratory, One Gifford Pinchot Drive, Madison, WI 53726–2398. This publication is also available online at www.fpl.fs.fed.us. Laboratory publications are sent to hundreds of libraries in the United States and elsewhere. The Forest Products Laboratory is maintained in cooperation with the University of Wisconsin. The use of trade or firm names in this publication is for reader information and does not imply endorsement by the United States Department of Agriculture (USDA) of any product or service. The USDA prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orienta- tion, genetic information, political beliefs, reprisal, or because all or a part of an individual’s income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program informa- tion (Braille, large print, audiotape, etc.) should contact USDA’s TARGET Center at (202) 720–2600 (voice and TDD). To file a complaint of discrimi- nation, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250–9410, or call (800) 795–3272 (voice) or (202) 720–6382 (TDD). USDA is an equal opportunity provider and employer. Contents Abbreviations .................................................................... ii Genus HadrobregmusThomson .................................. 29 Collection Codes ............................................................... ii Hadrobregmus notatus (Say) .................................. 29 Introduction ....................................................................... 1 Genus Priobium Motschulsky..................................... 30 Family Ptinidae ................................................................. 2 Priobium sericeum (Say) ........................................ 31 Distribution ................................................................... 2 Genus Trichodesma LeConte ...................................... 32 Anatomy ........................................................................ 2 Trichodesma gibbosa (Say)..................................... 32 Taxonomy ...................................................................... 3 Genus Oligomerus Redtenbacher ............................... 33 Natural History .............................................................. 3 Key to the Wisconsin Species of Adult Materials and Methods ...................................................... 4 Oligomerus .............................................................. 34 Material Examined ........................................................ 4 Oligomerus alternans LeConte ............................... 34 Field Collection Methods .............................................. 4 Oligomerus brevipilis (Fall) .................................... 34 Specimen Preparation and Curation .............................. 5 Oligomerus obtusus LeConte .................................. 35 Methods for Diagnoses ................................................. 5 Oligomerus sericans (Melsheimer) ......................... 36 Images and Illustrations ................................................ 5 Genus Stegobium Motschulsky ................................... 37 Family Ptinidae Latreille, 1802 ......................................... 6 Stegobium paniceum (Linnaeus) ............................. 37 Key to the Wisconsin Subfamilies of Adult Subfamily Ptilininae ........................................................ 39 Ptinidae ............................................................................. 6 Genus Ptilinus Mueller ............................................... 39 Subfamily Ptininae ............................................................ 6 Key to the Wisconsin Species of Adult Ptilinus ..... 40 Key to the Wisconsin Genera of Adult Ptininae ........... 8 Ptilinus lobatus Casey............................................. 40 Genus Gibbium Scopoli ................................................ 8 Ptilinus ruficornis Say............................................. 41 Gibbium aequinoctiale Boieldieu ............................. 8 Subfamily Xyletininae .................................................... 43 Genus Mezium Curtis .................................................... 9 Key to the Wisconsin Genera of Adult Mezium affine Boieldieu ........................................... 9 Xyletininae .................................................................. 44 Genus Pseudeurostus Heyden ..................................... 10 Genus Euvrilletta Fall ................................................. 44 Pseudeurostus hilleri (Reitter) ................................ 10 Key to the Wisconsin Species of Adult Genus Ptinus Linnaeus ............................................... 11 Euvrilletta ............................................................... 45 Key to the Wisconsin Species of Adult Ptinus ........ 12 Euvrilletta brevis White .......................................... 45 Ptinus bimaculatus Melsheimer .............................. 12 Euvrilletta harrisii (Fall) ......................................... 46 Ptinus clavipes Panzer