Life Sciences Commons^™

Production Of Unisexual Progenies By The Sorghum Midge, Contarinia Sorghicola, Frederick P. Baxendale, G. L. Teetes

Department of Entomology: Faculty Publications

Mated females of the sorghum midge, Contarinia sorghicola (Coquillett) (Diptera: Cecidomyiidae), produce exclusively either male or female progenies. Unmated females deposit few eggs and produce no offspring. Production of single-sex progeny was not due to differential larval mortality of one sex.

Reactions Of Differential Varieties To The Rice Gall Midge Orseolia Oryzae In Asia. Report Of An International Collaborative Research Project., Elvis A. Heinrichs, International Rice Research Institute

Department of Entomology: Faculty Publications

Varieties and breeding lines known to be resistant to the gall midge in some areas of Asia were tested in China, India, Indonesia, Sri Lanka, and Thailand from 1977- 1980. Differential reactions were evident, indicating variations in the virulence of gall midge populations in the various countries. Eswarakora derivatives were resistant in Thailand but susceptible in Indonesia; Leuang 152 was resistant in Indonesia but susceptible in Thailand. In India, Eswarakora derivatives were susceptible in Orissa but resistant in Andhra Pradesh. The Leuang 152 and Ob 677 groups were resistant at all test sites except in Thailand and Bihar, India.

Barutus Hartmanni, A New Genus And Species From Panama With A Key To The Genera Of New World Pentodontini (Coleoptera: Scarabaeidae: Dynastinae), Brett C. Ratcliffe

University of Nebraska State Museum: Entomology Papers

Barutus hartmanni, a new genus and species from Volcan de Baru, Chiriqui, Panama, is described and illustrated. A key to the New World genera of Pentodontini (Scarabaeidae: Dynastinae) is provided.

New Species And Distribution Records Of Surutu From Amazonian Brazil (Coleoptera: Scarabaeidae: Dynastinae), Brett C. Ratcliffe

University of Nebraska State Museum: Entomology Papers

Surutu fenni n. sp. and Surutu hesperius n. sp. are described from the Amazon Basin of Brazil. Surutu seabrai D'Andretta and Martinez is recorded from the Brazilian state of Amazonas for the first time. A key to the species is presented.

Reduced Yield Of Soybeans In Fields Infested With The Red Imported Fire Ant, C. S. Lofgren, C. T. Adams

Entomology Papers from Other Sources

The impact of mounds of the red imported fire ant (RIFA), Solenopsis invicta Buren, on the harvest of soybeans was reported by Adams et al. (1976. J. Ga. Ent. Soc. 11(2): 167-9) and Adams et al. (1977. J. Elisha Mitchell Sci. Soc. 93 (3): 150-2).

Thoracic Crop Formation Following Dealation By Virgin Females Of Two Species Of Solenopsis, B. M. Glancey, A. Glover, C. S. Lofgren

Entomology Papers from Other Sources

The enlargement of the esophagus following dealation to form a "thoracic" crop has been reported for Lasius queens by Janet (1907. Ducourtieux and Gout 149 p.), for queen ants of 5 genera by Petersen-Braun and Buschinger (1975. Insectes Sociaux 22: 51-66) and for mated and unmated queens of the red imported fire ant, Solenopsis invicta Buren by Glancey et al.

Die Erforschung Der Herpetofauna Der Mongolischen Volksrepublik: Situation Und Perspektiven, Günther Peters

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

First paragraph:

Die Landschaften der Mongolei sind arm an Reptilien- und Amphibienarten. Dieser Umstand mag die Frage aufwerfen, ob herpetologische Untersuchungen in Beschränkung auf das Territorium der MVR eine nennenswerte Perspektive haben könnten, nachdem Artenspektrum und Verbteitung der Species annähernd vollständig erkundet sind. Ein Herpetologe wird zweifellos für seine Arbeit auch in diesem Land eine Zukunft sehen, doch muß wohl von vornherein eingestanden werden, daß das Volumen der Probleme dieses Faches hinter denen der übrigen Disziplinen der Vertebratenzoologie und der Entomologie in einem bescheidenerem Rahmen verbleibt. Dies gilt sowohl im rein wissenschaftlichen als erst recht auch im angewandten Bereich ihrer …

A Feeding Deterrent Effect Of A Water Extract Of Tansy (Tanacetum Vulgare L., Compositae) On Three Lepidopterous Larvae, Gary Brewer, Harold J. Ball

Department of Entomology: Faculty Publications

A tansy (Tanacetum vulgare L.) extract was made by grinding fresh tansy leaves in distilled water. The extract, when "painted" on broccoli leaf discs, was found to deter feeding of two of three lepidopterous larvae studied. When the tansy extract was "painted" on the entire body surfaces of the larvae of three lepi dopterous species, no deleterious reactions were observed.

Ovicidal Activity Of Insecticides Against Planthoppers On Rice, E. A. Heinrichs, S. L. Valencia

Department of Entomology: Faculty Publications

Insecticides were evaluated to determine their ovicidal activity against rice-feeding planthoppers, Nilaparvata lugens (Stål) and Sogatella furcifera Horvath. Carbofuran, methyl parathion, and triazophos were ovicidal as foliar sprays, and carbofuran, diazinon, metalkamate, and triazophos were ovicidal as paddy-water applications of granules in insectary studies. In a field study, only triazophos as a foliar spray provided significant ovicidal activity against N. lugens. Eggs of S. furcifera were more susceptible to insecticides than those of N. lugens. Ovicidal activity was dependent on age of egg at the time of insecticide application and on insecticide concentration.

The Fourth Hylobothynus: Spanning The Amazonian Gap (Coleoptera: Scarabaeidae: Dynastinae), Brett C. Ratcliffe

University of Nebraska State Museum: Entomology Papers

Hylobothynus pontis Ratcliffe is described as new from Amazonian Brazil. A key and distribution map are provided for the four species in the genus Hylobothynus Ohaus.

Eli Lilly El-468, A New Bait Toxicant For Control Of The Red Imported Fire Ant, David F. Williams, Clifford S. Lofgren

Entomology Papers from Other Sources

Eli Lilly EL-468, a phenylenediamine, possesses the delayed-toxicity necessary for a bait toxicant to control colonies of the red imported fire ant, Solenopsis invicta Buren. In laboratory tests it gave delayed action over more than a 10-fold range of concentrations; in field tests, baits formulated on pregel defatted corn grits and applied at 20 and 40 g AI/ha produced as high as 86 and 91% control.