Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Discussion of 2018 gathering

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

TaxonomyBrowseInfoImagesLinks
Books
Data

Species Dichelotarsus laevicollis

 
 
1 2 3 4 5 6 7 8 9 ...
next page
last page

The Cantharidae of Eastern Canada and Northeastern United States
By Pelletier G., Hébert C.
Canadian Journal of Arthropod Identification 25, 2014

Handbook of Zoology. Coleoptera Vol. 3: Morphology and Systematics (Phytophaga)
By Leschen R.A.B., Beutel R.G. (eds)
Walter de Gruyter, Berlin. 687 pp., 2014

Review of the American Corylophidae, Cryptophagidae, Tritomidae and Dermestidae, with Other Studies
By T. L. Casey
New York Entomological Society, 1900
Journal of the New York Entomological Society, 8(2): 51-172, 1900

Full text

The Bothrideridae and Colydiidae of America north of Mexico (Coleoptera: Clavicornia and Heteromera)
By Stephan K.H.
Florida Dept. of Agriculture and Consumer Services, Division of Plant Industry. xii, 65 p., 1989
Occasional Papers of the Florida State Collection of Arthropods, Vol.6
Full text

Further contributions to the Coleoptera fauna of New Brunswick with an addition to the fauna of Nova Scotia, Canada
By Webster R.P., Webster V.L., Alderson C.A., Hughes C.C., Sweeney J.D.
Zookeys 573: 265-338, 2016

Abundance of herbivores on six milkweed species in Illinois.
By Price, P.W. & M.F. Willson.
American Midland Naturalist 101(1): 76–86., 1979
JSTOR

Price, P.W. & M.F. Willson. 1979. Abundance of herbivores on six milkweed species in Illinois. American Midland Naturalist 101(1): 76–86.

Abstract

To aid the understanding of the role of insect herbivores as selective agents in the evolution of their host plants a survey of herbivore abundance and impact was undertaken in central Illinois on the six milkweed species: Asclepias incarnata, A. sullivantii, A. syriaca, A. verticillata, A. amplexicaulis, and A. tuberosa. These species occur in this order on a moisture gradient from wet to dry soil conditions. This survey revealed that 12 species occurred at an abundance of at least one individual per 100 host stems in 1 plot-year on one host species: Oncopeltus fasciatus*, Lygaeus kalmii*, Aphis nerii*, Labidomera clivicollis*, Tetraopes tetrophthalmus*, T. femoratus, T. quinquemaculatus, Rhyssomatus lineaticollis*, Danaus plexippus, Cycnia tenera*, Euchaetias egle and a leafminer. All but L. kalmii are specific to milkweeds in Illinois. Seven of these species, marked with asterisks, were abundant enough to act as major selective forces on the life history patterns of the milkweed species, populations and clones concerned.

Life history evolution in seven milkweeds of the genus Asclepias.
By Wilbur, H.M.
The Journal of Ecology, 64(1): 223–240., 1976
JSTOR

Wilbur, H.M. 1976. Life history evolution in seven milkweeds of the genus Asclepias. The Journal of Ecology, 64(1): 223–240.

Abstract

Life history differences among seven species of Asclepias (A. exaltata, A. incarnata, A. purpurascens, A. syriaca, A. tuberosa, A. verticillata and A. viridiflora) in south-east Michigan are correlated with differences in microhabitat, in exposure to herbivores, and in competition. Components of each species' reproductive strategy include: number of stems per plants, number of umbels per stem, number of flowers and pods per umbel, number of seeds per pod, seed weight and annual increase in reproductive potential. Components of each species' selective regime include: the herbivore load (measured by the frequency of plants damaged by predators or animal parasites), competition (measured by the proportion of non-flowering plants and by the density of competitors), and environmental uncertainty (measured by annual mortality rates).

Survey of Coleoptera collected on the common milkweed, Asclepias syriaca, at one site in Ohio
By Dailey, P.J., R.C. Graves and J.M. Kingsolver.
The Coleopterists Bulletin, 32(3): 223-229., 1978
JSTOR

Dailey, P.J., R.C. Graves and J.M. Kingsolver. 1978. Survey of Coleoptera collected on the common milkweed, Asclepias syriaca, at one site in Ohio. The Coleopterists Bulletin, 32(3): 223-229.

Abstract

Coleoptera associated with the common milkweed, Asclepias syriaca L., were collected daily for 90 consecutive days. Of the 132 species listed, 18 were considered to be common (50 or more collected) while the majority of species were considered temporary visitors. The host specific milkweed beetle, [i]Tetraopes tetr

 
 
1 2 3 4 5 6 7 8 9 ...
next page
last page