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Category Archives: Revising Bembidiina
Discovering Insect Species: state of the art in Trepanedoris
As mentioned in my previous post, I outlined the state of the art in Trepanedoris research to the students in my Discovering Insect Species course. Here’s the story I told them. (As the class will be focusing on Trepanedoris in … Continue reading
Discovering Insect Species: hands-on with Trepanedoris
I’m a bit behind in posts about the Discovering Insect Species course, because so much has happened so quickly. Last week we examined our catch from the local field trip and learned how to prepare specimens, and we learned the state of … Continue reading
The oak tree grows pretty close to where the acorns dropped
Here’s my mom, at age 82, collecting some of what will be the type series of a new species of Bembidion from Jasper National Park in Canada. This was in 2011, during a great trip she and I made around … Continue reading
Posted in Fieldwork, Revising Bembidiina
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Discovering Insect Species: taxonomic history of Trepanedoris
In the scientific literature, there are now considered to be 16 species of Bembidion subgenus Trepanedoris. What path of research in insect systematics has led us to this point? In 1758, when the tenth edition of Carl Linnaeus’s Systema Naturae was … Continue reading
Sharing the joy of discovery
Nine undergraduate students, my graduate student John Sproul, and me. Over the next ten weeks we will go into the field, find beetles, look at them under the microscope, do dissections, photograph them, make predictions about species boundaries, extract their DNA, PCR … Continue reading
Return of the Taxa
Those who might follow my blog may have noticed a rather long lull in my posts. For this I apologize, but life happens, and my attentions were elsewhere. I hope to make up for that in the coming months. In the meantime, … Continue reading
Posted in Fieldwork, Revising Bembidiina, Taxonomic Process
Tagged Bembidion, curtulatum, genitalia, Lindrochthus, Mount Tamalpais, Plataphus, wickhami
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Map of unrecognized species in Bembidiina
Here’s an addendum to the post about Unrecognized species in Bembidiina. The map below shows the known distribution of most (but not all) of the unrecognized taxa of Bembidiina in America north of Mexico. Notably absent are some of the … Continue reading
Posted in Revising Bembidiina
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Unrecognized species of Bembidiina in the USA and Canada
I’ve been mentioning in this blog several unrecognized species which we have been finding in the fauna of Bembidiina in America north of México. By “unrecognized” I mean both undescribed species (those without a name), and species that have already … Continue reading
Posted in Revising Bembidiina, Taxonomic Process
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Examining name-bearers at the USNM
I’m at the Smithsonian Institution for the next three days, working in the United States Museum of Natural History (the “USNM”). My main goal is to look at type specimens, especially Casey types, so that I can figure out what … Continue reading
Posted in Revising Bembidiina, Taxonomic Process
Tagged Bembidion, lectotype, Lionepha, museum, nomenclature, Plataphus, Trechonepha, type specimens, USNM
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Lindrochthus at Mount Tamalpais
In an earlier post, I wrote about how the distinctive subgenus Lindrochthus, viewed in the literature as consisting of the single species Bembidion wickhami, was actually at least two species. And those two species live together at Mount Tamalpais, just … Continue reading
Posted in Fieldwork, Revising Bembidiina, Taxonomic Process
Tagged Bembidion, genitalia, Lindrochthus, Mount Tamalpais
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David Maddison
The Subulate Palpomere 