Louisiana Oak Twig Project
Fine Beetles: On the efficacy and community structure of Coleoptera reared from twigs
Twigs represent an abundant source of fine woody debris and have been well studied in regards to economically important beetle species such as the Scolytinae (bark beetles) but typically non-economically important species are ignored. A simple study exploring 1) the efficacy of rearing Coleoptera from fine woody debris and 2) the effect of debris position was conducted. A single Quercus falcata Michx. (Southern Red Oak) was felled March 2006. Twigs averaging 36cm in length and 14mm diameter were randomly placed into bundles of ten. At each of three sites three bundles were placed directly on the ground, three propped against a standing tree, and three tied approximately 1m above the ground tight against the branch of a living woody plant. The 27 bundles were collected ca. 10 months later during January 2007 and each was placed into a rearing chamber with a thin film of propylene glycol in the bottom as a preservative. Specimens were collected from the rearing chambers ca. 6 months later in July 2007. More than 400 adult Coleoptera specimens were collected representing 33 species within 16 families. Cerambycidae (longhorn beetles) and Curculionidae (weevils) exhibited the highest richness, with 9 and 5 species respectively. Comparisons of twig communities among the bundle positions will be discussed.
Family Species Author Year Anobiidae Petalium debile (Ford) 1905 Anobiidae Calymmaderus nitidus (LeConte) 1865 Biphyllidae Diplocoelus rudis LeConte 1863 Buprestidae Chrysobothris chrysoela Illiger 1800 Buprestidae Agrilus obsoletoguttatus Gory 1841 Cerambycidae Anelaphus villosus (Fabricius) 1792 Cerambycidae Anelaphus pumilus (Newman) 1840 Cerambycidae Tessaropa tenuipes (Haldeman) 1848 Cerambycidae Cyrtinus pygmaeus (Haldeman) 1847 Cerambycidae Ecyrus dasycerus (Say) 1827 Cerambycidae Liopinus alpha (Say) 1827 Cerambycidae Obrium maculatum (Oliver) 1795 Cerambycidae Neoclytus acuminatus (Fabricius) 1775 Cerambycidae Euderces pini (Oliver) 1795 Cerambycidae Euderces picipes (Fabricius) 1787 Cleridae Neorthopleura damicornis (Say) ? Cleridae Madoniella dislocatus (Say) 1825 Corylophidae Holopsis carolinae (Casey) 1900 Curculionidae Laemosaccus nephele (Herbst) 1797 Curculionidae Sp. A ? ? Curculionidae Hypothenemus californicus Hopkins 1915 Curculionidae Sp. B ? ? Curculionidae Acalles clavatus (Say) 1831 Dermestidae Cryptorhopalum floridanum Casey 1916 Laemophloeidae Charaphloeus sp. ? ? Latridiidae Corticarina ? ? Latridiidae Melanophthalma distinguenda (Comolli) 1837 Melandryidae Microtonus sericans LeConte 1862 Melyridae Attalus scincetus (Say) 1825 Monotomidae Monotoma longicollis (Gyllenhal) 1827 Mordellidae Mordella invisitata Liljeblad 1945 Mordellidae Falsomordellistena hebraica (LeConte) 1862 Ptiliidae Acrotrichis sp. ? ? Staphylinidae Sepedophilus macer Casey 1895 Staphylinidae Bibloplectus sp. ? ?