Life Sciences Commons^™

Systematics And Biogeography Of Marsikomerus Attems, 1938, A Misunderstood Genus Of Centipedes (Geophilomorpha: Schendylidae), Richard L. Hoffman, Luis A. Pereira

Insecta Mundi

Marsikomerus (Attems 1938) is transferred from Geophilidae to Schendylidae, and shown to be a senior synonym of Simoporus (Chamberlin 1940) and Lanonyx (Chamberlin 1953). The type species M. pacificus is redescribed and illustrated in detail from the holotype; similar but less extensive treatment is provided for M. lanaius and M. texanus. The value of some traditionally used characters and the distribution of the genus (Hawaii, southwestern United States, northern Mexico) are discussed.

New Locality And Host Records For South American Acanthoscelides (Coleoptera: Bruchidae), John M. Kingsolver

Insecta Mundi

C.D. Johnson (Trans. Amer. Entomol. Soc. 116, 1990:425) described Acanthoscelides manieyi from near Guayaquil, Ecuador, but had no records of host plants for the species. In the collections of the National Museum of Natural History (NMNH), Washington, D.C., are records of this species having been intercepted at U.S. ports of entry in mung beans (Vigna radiata (L.) R. Wilczek var. radiata) from Peru, South America, in 1965, 1970, and 1971. More precise localities are not available. This is the first record for A. manleyi for Peru.

Discovery Of The Boll Weevil, Anthonomus Grandis Boheman In Paraguay (Coleoptera: Curculionidae), R. M. Marengo, W. H. Whitcomb

Insecta Mundi

The major agricultural export of Paraguay is cotton. This is mostly produced on 150,000 small permanent farms seldom over 12 acres in size. Cotton is plowed by horse or oxen and picked by hand. The whole family works on the farm with additional hands for harvest. Competition with modern mechanized agriculture is possible because of high yields and low production costs. No other crop has proven as suitable for the Paraguayan small farmer. Upon the arrival of the boll weevil, Anthonomus grandis Boheman, from infested Brazil, costs of production could increase by 500 per cent, making competition on the world …

Six New Species Of Skippers From Mexico (Lepidoptera: Hesperiidae: Pyrginae And Heteropterinae, Stephen R. Steinhauser

Insecta Mundi

Six new species of Mexican Hesperiidae, three Pyrginae, Bolla solitaria, B. fenestra and Zobera oaxaquena, from the state of Oaxaca, and three Heteropterinae, Piruna jonka and Dalla kemneri, also from Oaxaca, and Piruna millerorum from the state of Sinaloa, are described.

Book Review: Applied Myrmecology: A World Perspective By Robert K. Vander Meer, Jaffe Klaus, And Cedano Aragua, Arnold Van Pelt

Insecta Mundi

Applied Myrmecology provides a foundation for future concerted research efforts on economic intrusions of the ecologically diverse and abundant ants. Selections range from neurotoxins and behavior to ecology. One learns of "el venticuatro", an ant whose sting produces "the worst 24 hours of one's life", that "hormiga loca" prefers nesting under black plastic bags left in the fields when plants are transferred from nurseries, and that Pharaoh's ants transmit human diseases.

Volume 5, No. 1, March 1991 Covers And Ads

Insecta Mundi

Cover and ads

Hexapod Herald - Vol. 2, No. 3, February 15, 1991

Hexapod Herald and Other Entomology Department Newsletters

Miscellaneous

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A New Species Of Parachrysina Bates (Coleoptera: Scarabaeidae: Rutelinae) From Nuevo Leon, Mexico, Mary Liz Jameson

University of Nebraska State Museum: Entomology Papers

Parachrysina borealis is described as new, and a revised key to the species is provided. Parachrysina borealis represents the northernmost extent of the genus and is the only species of Areodina known from northeastern Mexico.

Book Review: The Beetles Of The World (Moron, M.A. 1990), Brett C. Ratcliffe

University of Nebraska State Museum: Entomology Papers

Depending on the audience, the Sciences Nat series on beetles of the world is either warmly embraced for its beautiful photography "enabling" picture identifications or rejected because of its simplistic approach to complex taxonomic issues. Moron, operating under a narrow set of editorial guidelines (e.g., no keys), has done a remarkably good job at bridging this gap with his treatment of Pelidnotina. The result is not only a beautiful book (as most in this series are), but one that is also scientifically credible. Given that any revision of Plusiotis deserved a color rendition, and that the Sciences Nat series is …

Hexapos Herald - Vol. 2, No. 2, February 1, 1991

Hexapod Herald and Other Entomology Department Newsletters

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Insect Immune Response To Bacterial Infection Is Mediated By Eicosanoids, David W. Stanley-Samuelson, Ellen Jensen, Kenneth Nickerson, Kristina C. Tiebel, Clyde Ogg, Ralph W. Howard

Department of Entomology: Faculty Publications

Inhibition of eicosanoid formation in larvae of the tobacco hornworm Manduca sexta, using specific inhibitors of phospholipase A₂, cyclooxygenase, and lipoxygenase, severely weakened the ability of larvae to clear the bacterium Serratia marcescens from their hemolymph. The reduced capability to remove bacteria is associated with increased mortality due to these bacteria. There is a dose-dependent relationship between the phospholipase A₂ inhibitor dexamethasone and both the reduced bacterial clearance and increased larval mortality. The dexamethasone effects on larval survival were reversed by treatment with arachidonic acid. Maleic acid, a nonspecific antioxidant, did not interfere with the insects' …

Hexapod Herald - Vol. 2, No. 1, January 14, 1991

Hexapod Herald and Other Entomology Department Newsletters

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Spring 1991 semester

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Preserved Grasshopper Fauna Of Knife Point Glacier, Fremont County, Wyoming, U.S.A., Jeffrey A. Lockwood, Craig D. Thompson, Larry D. Debrey, Charles M. Love, Richard A Nunamaker, Robert E. Pfadt

Entomology Papers from Other Sources

In 1987 and 1988, samples of preserved insects were extracted from the ice of Knife Point Glacier, Fremont County, Wyoming. The glacier lies at an altitude of 3500 m a.s.l. in the Shoshone National Forest, Wind River Range, and is known to contain preserved insects. Although the glacier has undergone extensive recession in the last 50 yr, some insect deposits are still embedded at 20 to 25 cm below the surface and perhaps much deeper. The frozen deposits appear to consist entirely of grasshoppers. A few, virtually intact, specimens and body parts were in a state of preservation that allowed …

The Fatty Acid Compositions Of Phospholipids And Triacylglycerols From Two Chinch Bug Species Blissus Leucopterus Leucopterus And B. Iowensis (Insecta: Hemiptera; Lygaeidae) Are Similar To The Characteristic Dipteran Pattern, Barbara P. Spike, Robert J. Wright, Stephen D. Danielson, David W. Stanley-Samuelson

Department of Entomology: Faculty Publications

1. The fatty acid compositions of phospholipids and triacylglycerols prepared from whole chinch bugs Blissus leucopterus leucopterus and B. iowensis were analyzed.
2. The fatty acid profiles from these insects are different from those from all other insect groups so analyzed, except most Diptera.
3. The major components include 16:0 and 18:0, high proportions of 16:1 and 18:1 and low proportions of polyunsaturated fatty acids.
4. The fatty acid profiles were similar for several categories from both species of chinch bugs, including adult males and females, prediapausing and diapausing adults, and nymphs.

Gelled Diet For Screwworm (Diptera: Calliphoridae) Mass Production, David B. Taylor, Jimmy C. Bruce, Rene Garcia

Department of Entomology: Faculty Publications

A rearing system based on a diet gelled with Water-Lock G400, a synthetic superabsorbent (poly(2-propenamide-co-2-propenoic acid, sodium salt))( WL), was compared with the standard rearing system (liquid diet suspended in acetate fibers) for the mass production of screwworms, Cochlomyia hominivorax (Coquerel). The WL rearing system yielded 2% heavier pupae, 32% higher egg to pupa survival, and required 54% less diet and 88% less labor than the standard rearing system. Other advantages of the WL system include reduced susceptibility to suboptimal environmental conditions and labor practices, and characteristics conducive to centralization and mechanization of rearing procedures.

Mechanisms Of Hybrid Sunflower Resistance To The Sunflower Midge (Diptera: Cecidomyiidae), Marc D. Anderson, Gary J. Brewer

Department of Entomology: Faculty Publications

A study was conducted to identify mechanisms of resistance in sunflower to the sunflower midge, Contarinia schulzi Gagné. Infestation ratings, larval counts, and damage ratings were used to quantify midge resistance in seven sunflower hybrids grown at three locations. Six of the seven hybrids possessed midge resistance. Each hybrid was further categorized with respect to infestation resistance, antibiosis, and tolerance. Two bud characteristics, percent open and size, were examined for their contribution to infestation resistance. The percentage of time that buds of each hybrid were open was negatively correlated with infestation (indicating a preference for the open characteristic). Infestations were …

Oviposition And Larval Bionomics Of Two Weevils (Coleoptera: Curculionidae) On Sunflower, Gary J. Brewer

Department of Entomology: Faculty Publications

Use of cultivated sunflower (Helianthus annum L.) as a host by two species of seed weevils, Smicronyx fulvus LeConte, the red sunflower seed weevil, and S. sordidus LeConte, the gray sunflower seed weevil, was compared using dissection of achenes from naturally and artificially infested plants. The gray seed weevil oviposits on the tips of unopened sunflower florets before anthesis. Larvae migrate through the corolla tube, penetrate the developing achene, and begin extensive feeding at the achene base. Achenes infested by the gray sunflower seed weevil are enlarged, lack an embryo, and appear to be a type of gall. The …

Effect Of Starch-Based Corn Rootworm (Coleoptera: Chrysomelidae) Baits On Selected Nontarget Insect Species: Influence Of Semiochemical Composition, Thomas J. Weissling, Lance J. Meinke, Kandy A. Lytle

Department of Entomology: Faculty Publications

Various starch-encapsulated semiochemical-insecticide formulations, developed for potential use in adult corn rootworm (Diabrotica spp.) management programs, were evaluated in the laboratory and field for effectiveness on corn rootworm beetles: a carabid, Harpalus pennsylvanicus DeGeer; and a coccinellid, Coleomegilla maculata lengi Timberlake. Carbaryl was formulated in pregelatinized starch matrices along with Diabroticaspecific semiochemicals. The specific combination of feeding-gustatory stimulants encapsulated within or coating the outside of starch granules significantly influenced effectiveness. Allstarch formulations containing feeding-gustatory stimulants effectively killed Diabrotica virgifera virgifera LeConte adults in laboratory and field bioassays. However, H. pennsylvanicus and C. m. lengi mortality was greatly reduced when …

Potential Of Starch Encapsulated Semiochemical-Insecticide Formulations For Adult Corn Rootworm (Coleoptera: Chrysomelidae) Control, Thomas J. Weissling, Lance J. Meinke

Department of Entomology: Faculty Publications

Field and laboratory experiments were conducted from 1987 through 1989 to determine if plant-derived semiochemicals and carbamate insecticides, encapsulated in starch-borate (SBM) and pregelatinized-starch (PGM) matrices, could be used to attract and kill corn rootworm (Diabrotica spp.) beetles. D. virgifera virgifera LeConte adults were concentrated in plots within a corn (Zea mays L.) field, following application of SBM granules formulated with semiochemicals and carbaryl. However, resulting mortality was low even though beetles were observed feeding on the granules. Low mortality levels appear to have been caused by a loss of carbaryl during the formulation process. Laboratory assay results indicated …

Life History Studies, Host Records, And Morphological Description Of Genitalia Of Eurytoma Tylodermatis Ashm. (Hymenoptera : Eurytomidae) From South Dakota, Burruss Mcdaniel, Arvid A. Boe

Native Plant Focused Publications

Eurytoma tylodermatis Ashm. was found to be parasitic on Acanthoscelides perforatus (Horn) in seed pods of Canada milk- vetch {Astragalus canadensis L.). Observations on larval behavior and frequency of parasitism are discussed. Male and female genitalia of E. tylodermatis are illustrated.

A New Bruchophagus From Glycyrrhiza Lepidota Pursh In The Northern Great Plains (Hymenoptera : Chalcidoidea : Eurytomidae), Burruss Mcdaniel, Arvid A. Boe

Native Plant Focused Publications

A new species, Bruchophagus grisselli McDaniel and Boe, which infests seeds of Glycyrrhiza lepidota Pursh (American licorice), is described and illustrated. It's known from South Dakota and North Dakota in the USA. A field study at 8 sites showed that B. grisselli has a wide distribution throughout the Dakotas.

Susceptibility Of Red-Cockaded Woodpecker Colony Areas To Southern Pine Beetle Infestation In East Texas, James H. Mitchell, David L. Kulhavy

Faculty Publications

Seven red-cockaded woodpecker (Picoides borealis) colonies and stands within a one-quarter mile radius were hazard-rated for susceptibility to the southern pine beetle (Dendroctonus Frontalis Zimm.). Individual colonies generally were ranked low to moderate hazard using the Texas Hazard system and moderate hazard using the National Forest Risk system. Within one quarter mile of the colonies, 28% of the stands were low hazard, 25% moderate, 0.3% high and 7.5% extreme with Texas Hazard. Four percent were low hazard, 52% moderate, and 6% high with National Forest Risk. Moderate to extreme hazard stands within one-quarter mile of the …

The Lucifotychus Of Eastern North America (Coleoptera: Pselaphidae), Donald S. Chandler

New Hampshire Agricultural Experiment Station Publications

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Maine Blueberry Advisory Committee Research Report, H Y. Forsythe Jr, Judith A. Collins, J Riley, David H. Lambert, David E. Yarborough, E A. Osgood, Frank A. Drummond, John M. Smagula, Delmont Emerson, Warren Hedstrom, Alfred A. Bushway, Mary Ellen Camire, Rodney J. Bushway, Susan A. Ismail, Therese M. Work, Linda J. Irvine, Craig J. Schroeder, Jasotha Kugabalasooriar, Richard J. Rowe, Gilles H. Lemieux, Rene Verrault, Paul E. Cappiello, James D. Leiby, Michele C. Marra, Willem Brutsaert, David Brooks, E R. Huff

Wild Blueberry Research Reports

The 1990 edition of the Maine Blueberry Advisory Committee Research Reports was prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers with the Maine Agricultural Experiment Station and Maine Cooperative Extension Service at the University of Maine, Orono. Projects in this report include:

1. Biology and action thresholds of secondary blueberry pests

2. Control of blueberry maggot

3. Control of secondary blueberry pests

4. Application of steam as a method of controlling secondary pest insects on lowbush blueberry: a feasibility study

5. Pollination of the lowbush blueberry by native bees

6. …

Feeding By Reticulitermes Spp., Deborah A. Waller

Biological Sciences Faculty Publications

No abstract provided.