73,882 research outputs found
New state record and range extension for Mycterus youngi Pollock (Coleoptera: Mycteridae) – but is it really rare?
Mycterus youngi was described from Wisconsin and “L.S” (presumed to indicate along Lake Superior). All but one of the specimens in the type series were collected between 1947 and 1949. Herein, three females of M. youngi are reported from Michigan, between 1910 and 1940. A discussion of possible implications of the few, and largely old collection dates is provided
The Occurrence of \u3ci\u3eDitylus Caeruleus\u3c/i\u3e in Michigan (Coleoptera: Oedemeridae), With Observations on Its Range
The oedemerid beetle, Ditylus caeruleus, is recorded for the first time from Mar- quette County, Michigan. Bionomical data associated with the specimens represent the first such information for this species. Eight additional new Michigan county records for the species are also reported, including the first specimens from the Lower Peninsula. The distributional range of caeruleus is highly correlated with the Great Lakes, the 81. Lawrence River, and coastal Maine. Implications of this distribution pattern relating to possible development of larvae in driftwood and the potential significance of rafting as a dispersal mechanism are also discussed
Cantharidin and Insects: An Historical Review
The defensive role played by cantharidin in meloid and oedemerid beetles has been well documented. However. several groups of insects are known to orient positively toward the chemical or to the beetles which produce it: Miridae (Hemiptera); Pyrochroidae, Anthicidae (Coleoptera): Ceratopogonidae, Anthomyiidae (Diptera); and Braconidae Hymenopteran. Literature citations are summarized for each of these taxa using current nomencla.tun: and indicating the nature of the association
Description of the Larva of \u3ci\u3eDioedus Punctatus\u3c/i\u3e LeConte (Coleoptera: Tenebrionidae)
Larvae of Dioedus punctatus LeConte have been collected from logs, probably Ulmus americana, in the red-rotten stage of decay and determined from reared adults. They are described and illustrated
Field Records and Observations of Insects Associated With Cantharidin
This paper reports on insect species not previously associated with cantharidin, the terpenoid defense mechanism of blister beetles (Meloidae). Species from the following tau were obserYed and collected: Miridae (Hemiptera); Endomychidae, Pyrochroidae, AnthiLidae (Coleoptera); Ceratopogonidae, Sciaridae (Diptera); and Braconidae (Hymenoptera). In addition to listing the associations, a discussion of cantharidin orientation is presented along with preliminary hypotheses to explain these intriguing examples of coevolution
Field Studies of Cantharidin Orientation by \u3ci\u3eNeopyrochroa Flabellata\u3c/i\u3e (Coleoptera: Pyrochroidae)
During field studies conducted in south-central Michigan in 1977 and 1980. 109 specimens of Neopyrochroa flabellata were observed and collected at filter papers baited with cantharidin. Only the two highest concentrations used (39.2 mg. 392 j.Lg) elicited responses. and the beetles did not prefer one over the other. In the 24-h studies, most specimens were observed at the cantharidin baits between dusk and 0100 hrs (61 %; n = 14). and 0430-0630 hrs (26%; n = 6). Only two of the 109 specimens were female
A distributed finite-element modeling and control approach for large flexible structures
An unconventional framework is described for the design of decentralized controllers for large flexible structures. In contrast to conventional control system design practice which begins with a model of the open loop plant, the controlled plant is assembled from controlled components in which the modeling phase and the control design phase are integrated at the component level. The developed framework is called controlled component synthesis (CCS) to reflect that it is motivated by the well developed Component Mode Synthesis (CMS) methods which were demonstrated to be effective for solving large complex structural analysis problems for almost three decades. The design philosophy behind CCS is also closely related to that of the subsystem decomposition approach in decentralized control
Searching for an anomalous coupling via single top quark production at a collider
We investigate the potential of a high-energy collider to
detect an anomalous coupling from observation of the reaction
, , where or . We find that with
-tagging and suitable kinematic cuts this process should be observable if
the anomalous coupling is no less than about 0.05/TeV, where
is the scale of new physics associated with the anomalous
interaction. This improves upon the bound possible from observation of top
decays at the Tevatron.Comment: 13 pages, RevTeX, 1 PS figur
First Record of Rhipiceridae (Coleoptera: Polyphaga: Dascilloidea) From Wisconsin
The Cedar beetle family, Rhipiceridae, is recorded from Wisconsin for the first time. A single adult female of Sandalus niger was collected on a walkway along a forested path in south-central Wisconsin on 7 October 2000. This discovery represents not only the first record of Rhipiceridae from Wisconsin, but also the first record of the entire superfamily Dascilloidea, a relatively basal lineage of Elateriformia
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