Distribution and Synonymy in New World Litostilbus Guillebeau (Coleoptera: Cucujoidea: Phalacridae)

Abstract

Five species of the phalacrid genus Litostilbus Guillebeau, 1894 are currently recognized (Gimmel 2013). Three of these species occur in Southeast Asia and were, until recently, treated under the genus Pseudolitochrus Liubarsky, 1993 (Gimmel 2013; Lyubarsky 1994). The remaining two species, Litostilbus testaceus (Fabricius, 1792) and Litos­ tilbus tristriatus (Casey, 1890), are collectively known from the West Indies and USA (Florida) (Gimmel 2013). A critical examination of the type specimens of these two species, along with more recently collected specimens, led to the results below. The two previously described species were found to be synonymous, and the genus is herein considered to be represented in the New World by a single widespread, variable species. Genitalia images were obtained using a 2.5× objective (planapochromatic lenses) on a Zeiss SteREO Discovery.V20 with an attached Zeiss Axiocam 506. Habitus images were obtained with a Canon EOS 7D with an MP-E 65-mm lens mounted on a Cognisys StackShot. All source images were stacked in Helicon Focus 6.8.0. Label data for type specimens are presented verbatim; only country-, island-, and/or province-level data are given for specimens examined, along with repositories, as follows: American Museum of Natural History, New York, NY, USA (AMNH; Lee Herman); Natural History Museum, London, UK (BMNH; Roger Booth, Maxwell Barclay); Canadian Museum of Nature, Ottawa, Canada (CMNC; François Génier); Carnegie Museum of Natural History, Pitts burgh, PA, USA (CMNH; Robert Androw); Florida State Collection of Arthropods, Gainesville, FL, USA (FSCA; Paul Skelley); Instituto Nacional de Biodiversidad, Santo Domingo de Heredia, Costa Rica (INBio); Louisiana State Arthropod Museum, Louisiana State University, Baton Rouge, LA, USA (LSAM; Victoria Bayless); Museum of Comparative Zoology, Harvard University, Cambridge, MA, USA (MCZ; Philip Perkins, Crystal Maier); Matthew L. Gimmel collection, Santa Barbara, CA, USA (MLGC); C. A. Triplehorn Insect Collection, The Ohio State University, Columbus, OH, USA (OSUC); Snow Entomological Museum, University of Kansas, Lawrence, KS, USA (SEMC; Zack Falin); Texas A&M University Collection, College Station, TX, USA (TAMU; Ed Riley); University of Delaware, Newark, DE, USA (UDCC; Charles Bartlett); University of Georgia Collection of Arthropods, Athens, GA, USA (UGCA; Joseph McHugh); United States National Museum of Natural History, Washington, DC, USA (USNM; Warren Steiner); West Indian Beetle Fauna Project Collection, Montana State University, Bozeman, MT, USA (WIBF; Michael Ivie); Zoological Museum, University of Copenhagen, Denmark (ZMUC; Alexey Solodovnikov); Zoologisches Museum, Universität Kiel, Germany (ZMUK).