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Category Archives: Revising Bembidiina
Truth versus firehoses of falsehoods
As a result of one of my more traumatic experiences as a graduate student, I became familiar with Knoll’s Law of Media Accuracy, “Everything you read in the newspaper is absolutely true, except for that rare story of which you … Continue reading
Permanent male genitalic mini-preps
For many insects, examination of the genital structures is vital to understand species diversity. The genitalia of each species are often distinct, and species can be easier to distinguish using genitalia than other morphological traits. In carabid beetles, male genitalia … Continue reading
Posted in Morphological Techniques, Revising Bembidiina
1 Comment
Ten years later: the Lionepha paper is out
In September of 2009, I arrived in Oregon, excited to begin my new position at Oregon State University. I was also excited to live near Marys Peak, as the top of Marys Peak was the locality of capture of the … Continue reading
Posted in Academia, Fieldwork, Revising Bembidiina, Taxonomic Process
Tagged Lionepha, revisions
1 Comment
Discovering Insect Species: Overview in Rearview
When last I blogged, the Discovering Insect Species course was in full swing; we were excitedly waiting for the DNA sequence results from our first big field trip, which was to Klamath Marsh National Wildlife Refuge. I’m sorry I didn’t … Continue reading
Discovering Insect Species: DNA magic in Arizona
I got the email from FedEx saying that our package of four plates of 384 PCR samples had arrived at the University of Arizona, where they will be sequenced. These plates contain the DNA from multiple genes from over 120 … Continue reading
Discovering Insect Species: the beetle DNA heads south
In an earlier post, I outlined the steps we took to extract and amplify DNA from the beetles we collected in the Discovering Insect Species field trip to Klamath Marsh. As mentioned, the students extracted DNA from 36 beetles, … Continue reading
A nematode-filled Bembidion canadianum
Shannon, a student in the Discovering Insect Species course, went down to Eugene last weekend and looked for Trepanedoris. To say that she did well would be an understatement. She caught all four species that I had seen from the … Continue reading
Posted in Revising Bembidiina, Z499 (Discovering Insect Species)
Tagged Bembidion, nematodes, Trepanedoris
2 Comments
Discovering Insect Species: preparing beetle DNA
Over the last couple of weeks in our Discovering Insect Species course we have been processing samples from our Klamath Marsh trip, and worked with the DNA of the beetles. Here’s a bit of what we have done. Extracting the … Continue reading
Posted in Revising Bembidiina, Uncategorized, Z499 (Discovering Insect Species)
Tagged Bembidion, DNA, DNA taxonomy, Trepanedoris
2 Comments
The Bembidion acutifrons story
There are a number of subgroups within Bembidion subgenus Trepanedoris whose structure of gene flow and species boundaries are not understood. The morphological data indicates several forms within these subgroups, but whether this variation is indicative of separate species is not yet … Continue reading
Discovering Insect Species: Klamath Marsh!
We had a great trip last weekend to the Klamath Marsh National Wildlife Refuge as part of our Discovering Insect Species course. One of our main goals was to see what species of Trepanedoris lived in the large marshland complexes of southern … Continue reading
David Maddison
The Subulate Palpomere 