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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. ? ?