Trap-Nest Design for Small Trap-nesting Hymenoptera

(excerpt) Many solitary bees and wasps construct brood cells in pre-existing natural cavities such as beetle borings or in excavations of pithy stems and twigs like Sambucus and Juglans. Artificial nesting materials are also acceptable and provide a convenient approach to study nest architecture, nesting activity, provisions and parasites. Arti- ficial nesting materials have included bamboo, glass tubes, plastic straws, cuttings of twigs and stems, and trap-nests. However, use of many of these materials have significant drawbacks

Influence of Tree Species on Frequency of Trap-Nest Use by \u3ci\u3ePassaloecus\u3c/i\u3e Species (Hymenoptera: Sphecidae)

Habitat selection by Passaloecus spp. based upon tree species used as stations for artificial nesting sites were studied. Data suggest that Passaloecus areolatus preferred Juglans and that P. cuspidatus preferred Pinus

Trap-Nest Bore Diameter Preferences Among Sympatric \u3ci\u3ePassaloecus\u3c/i\u3e Spp. (Hymenoptera: Sphecidae)

Five species of Passaloecus used trap-nests in a study area in southern Michigan. Significant differences in trap-nest bore diameter selection were noted among P. annulatus, P. areolatus, P. cuspidatus, and P. monilicornis. P. annulatus and P. areolatus selected bore diameters 1.6 to 2.4 mm, P. cuspidatus used bore diameters of 2.0 to 6.4 mm, and P. monilicornis selected diameters of 1.6 to 3.6 mm

Aphid Prey of \u3ci\u3ePassaloecus Cuspidatus\u3c/i\u3e (Hymenoptera: Sphecidae)

Provisioning activity of Passaloecus cuspidatus extended from 29 May through 6 August 1987. Eighty trap-nests contained 281 provisioned cells containing 9,618 aphids. The average number of aphids per cell was 34.2 and the average number of cells provisioned per day was 0.73. Passaloecus cuspidatus stored the following aphids as provisions: Cinaria sp., Euceraphis sp., Macrosiphum euphorbiae, Myzus sp., Myzus cerasi, Myzus monardae, and Sitobium avenae. The number of aphids provisioned per cell was inversely related to aphid size. The number of aphids provisioned per cell varied signifI­cantly (9-74)

Economics of Cell Partitions And Closures Produced by \u3ci\u3ePassaloecus Cuspidatus (Hymenoptera: Sphecidae)

Sphecid wasps, Passaloecus cuspidatus were observed gathering fresh pine resin (Pinus strobus) which they used for creating partitions and closures in their nests. Based upon measurements taken of the cells, and an estimate of the load carried by the wasps, the number of collecting trips made by the wasps was correlated with the quantity of resin contained within the nest partitions and closures

Factors Influencing Length and Volume of Cells Provisioned by Two \u3ci\u3ePassaloecus\u3c/i\u3e Species (Hymemoptera: Sphecidae)

Length of cells provisioned by Passaloecus areolatus and Passaloecus cuspidatus decreased as bore diameter increased, but volume of provisioned cells increased with increasing bore diameter. Activity of the parasitoid Omalus aneus increased length of provisioned cells. Wasp senescence did not result in increased cell length

Development of a systems theoretical procedure for evaluation of the work organization of the cockpit crew of a civil transport airplane

To achieve optimum design for the man machine interface with aircraft, a description of the interaction and work organization of the cockpit crew is needed. The development of system procedure to evaluate the work organization of pilots while structuring the work process is examined. Statistical data are needed to simulate sequences of pilot actions on the computer. Investigations of computer simulation and applicability for evaluation of crew concepts are discussed

Study of crack-initiation phenomena associated with stress corrosion of aluminum alloys Annual report, 6 Jun. 1967 - 6 Jun. 1968

Electron microscopic, fractographic, and microprobe observations of crack initiation and propagation phenomena associated with stress corrosion of aluminum alloy