Tertiary rhynchophorous Coleoptera of the United States.

Mode of access: Internet.

Descartes' Lehre von den Leidenshaften : ihre Darstellung nebst einer kritischen Untersuchung der Frage: "In welchem Zusammenhange steht jene mit seinen Lehren in der Metaphysik?" /

Originally presented as the author's thesis (doctoral)--Universität Rostock, 1892.

Manual of the New Zealand Coleoptera.

Mode of access: Internet.

Coléoptères du Mexique,

Originally published in 8 fasc., 1833-35.

Tonnewonte; or, The adopted son of America. A tale, containing scenes from real life,

Birch bark cover.

Los coleópteros de Marruecos /

At head of title: Junta para Ampliación de Estudios e Investigaciones Científicas. Instituto Nacional de Ciencias Físico-Naturales.

Der Käfersammler. Praktische Anleitung zum Fangen, Präparieren, Aufbewahren und zur Aufzucht der Käfer.

Bibliography: p. [xi]

A catalog of the Coleoptera of America north of Mexico : family, Scarabaeidae : subfamily, Geotrupinae /

Includes index.

A catalog of the Coleoptera of America north of Mexico : family : Cerylonidae /

"October 1982."

A catalog of the Coleoptera of America north of Mexico : family: Elmidae /

Includes index.

A catalog of the Coleoptera of America north of Mexico family : Cupesidae /

G.P.O. sales statement incorrect in publication.

Insurrection at Magellan. Narrative of the imprisonment and escape of Capt.

Mode of access: Internet.

Ablative Pyrolysis of Beetle-killed Trees

Thesis (Ph.D.)--University of Washington, 2016-06

Gut content analysis to distinguish between seed feeding and mycophagy of a biphyllid beetle larva found on Acacia melanoxylon

In a search for potential biocontrol agents for Acacia melanoxylon R. Br. (Mimosaceae), larvae of the beetle Diplocoelus dilataticollis Lea (Coleoptera; Biphyllidae) were found within damaged seeds of A. melanoxylon. The gut contents of larvae and adults were examined to determine whether their diet included seeds, in apparent contradiction to the known mycophagous diet of members of this family of beetles. Calcofluor M2R White, a plant cell-wall staining optical brightener was used to differentiate between plant cell fragments and fungal tissue in the gut content smears. Gut contents of adults of a known seed predator of A. melanoxylon, a weevil of the genus Melanterius, were examined in the same way to provide a benchmark. The gut contents of D. dilataticollis differed from those of Melanterius sp. Fungal structures and microbes were found in the gut of D. dilataticollis, in contrast to plant cell fragments found in the gut of the weevil and from scrapes made directly from seeds. We conclude that larvae of D. dilataticollis feed primarily on fungi associated with damaged seed and therefore may not be the proximate cause of seed damage.

Pollination ecology of the Australian cycad Lepidozamia peroffskyana (Zamiaceae)

Experiments carried out to investigate the reproductive ecology of the Australian cycad Lepidozamia peroffskyana (Regal, Bull. Soc. Imp. Nat. Mosc. 1857, 1: 184) revealed that this species is pollinated exclusively by host-specific Tranes weevils (Pascoe 1875). The weevils carry out their life cycle within the tissues of the male cones but also visit the female cones in large numbers. Female cones from which insects ( but not wind) were excluded had a pollination rate that was essentially zero. In contrast, female cones from which wind ( but not insects) were excluded had a pollination rate comparable with naturally pollinated cones. Assessment of Tranes weevil pollen load indicated that they are effective pollen-carriers. No other potential insect pollinators were observed on cones of L. peroffskyana. Sampling of airborne loads of cycad pollen indicated that wind-dispersed grains were not consistently recorded beyond a 2-m radius surrounding pollen-shedding male cones. The airborne load of cycad pollen in the vicinity of pollination-receptive female cones was minimal, and the spatial distribution of the coning population indicated that receptive female cones did not usually occur close enough to pollen-shedding male cones for airborne transfer of pollen to explain observed natural rates of seed set. These multiple lines of evidence suggest that wind-once considered the only pollination vector for cycads and other gymnosperms-plays only a minimal role in the pollination of L. peroffskyana, if any at all. The global diversity of insects associated with cycads suggests that some lineages of pollinating beetles may have been associated with cycad cones since Mesozoic times.