One of our main goals was to see what species of Trepanedoris lived in the large marshland complexes of southern Oregon and adjacent California. More particularly, we were hoping to get specimens of members of the Bembidion acutifrons complex, as that complex shows interesting patterns of variation which hint at multiple species. Based upon photos available online, Klamath Marsh is similar in appearance to the marshes of Alamosa NWR in Colorado, the type locality of Bembidion acutifrons. The big question in my mind was whether the B. acutifrons from Klamath Marsh (should we find them) had shiny males like the eastern populations, or dull, heavily-microsculptured males like the populations from western Oregon and western Washington. But we were also curious as to what other species of Trepanedoris might be there – with such extensive marshes, there might be surprises.
The visit to Klamath Marsh was arranged with the help of Faye Weekley, the Refuge Biologist, who provide excellent advice about possible sites. She also arranged, with the help of the Refuge Manager, Mike Johnson, to have us stay at the bunkhouse at the refuge headquarters.
We set out late Friday afternoon from Corvallis. Here’s everyone but me (and Ana, who couldn’t make the trip) excited about the discoveries ahead:
The drive down was about four hours, southeast over the Cascades. We were in two vehicles, my car and an OSU van, connected by walkie-talkies. We thought about giving the two vehicles in the convoy names while we were driving, to serve as “handles” for our walkie-talkie exchanges. We didn’t actually decide on names, in part because we came up with too many. Some of the names the groups thought of were positive, and applied to the car they were in:
- “acutifriends” [after Bembidion acutifrons]
- “the car formerly known as connivens” [because Bembidion elizabethae, which is common in Corvallis, used to called Bembidion connivens]
- “god save elizabethae” [thought up by Tom, who is from England]
Less positive names were applied to the occupants of the other vehicle:
After an enjoyable and conversation-filled drive, we arrived at about 10 pm at Klamath Marsh. The “bunkhouse” was vastly nicer than we expected – it was luxurious for field quarters.
The wood stoves in the living rooms were a very nice touch.
Even though it was late, and we were tired, we decided to walk down to the nearby river and see whether we could find any Trepanedoris. Head lamps on, we explored among the grasses and sedges. Here’s what the habitat looks like during the day:
Within a few minutes, we had found our first Trepanedoris – a female Bembidion acutifrons! Then another species of Trepanedoris showed up, something that looked like a bigger, darker Bembidion fortestriatum. And a third, a male of the undescribed species that I call Bembidion “Lost Lake”! And then Shannon found a male Bembidion acutifrons, and it was a shiny one, very similar to the ones from Colorado. This was a fantastic start! Satisfied with our glimpse of good things to come, we went to bed at about 1 am.
Saturday morning we examined our captures at the kitchen table.
Here are the live beetles from the previous night, in a container that is floating on ice water held in a second container. One of those little beetles is the shiny Bembidion acutifrons male we were so excited about. Would we find more?
After a breakfast of scrambled eggs with mushrooms, onions, and other good things, we headed out the the marshes.
It was cold, with occasional rain, and only a bit of sun now and then. Our first stop yielded a few Bembidion acutifrons, as well as some Bembidion (Semicampa) and B. transparens. I was excited about both of these. The specimens of B. (Semicampa) were interesting as Bousquet and Webster (2006) reported that there was an undescribed species in the Klamath Falls region of Oregon, and B. transparens as this was at the extreme southwestern end of the species range and a good sample for our other studies.
Our second stop was Wocus Bay, shown below. The sun poked out through bouts of rain, while we splashed and poked at dark, wet organic soil in the marsh. Members of the Bembidion (Notaphus) graphicum species group were common here, as were Bembidion acutifrons! We got a large series at last.
In the afternoon, a stop in the middle of the marsh yielded other species, including a confusing Trepanedoris that looked rather in-between Bembidion fortestriatum and Bembidion anguliferum. At this point we were very pleased with what we had found:
Another rather different habitat yielded many more members of the Bembidion acutifrons group:
And then we were done collecting for the day.
In the evening, we sorted through the live beetles, and I showed the group some of the ones we found:
We also sorted the live beetles out from the soil we stored them in, which allowed quicker processing once we got back to Corvallis. Here’s the group with aspirators and “bunkhouse blue bowls” doing the sorting:
Sunday morning we decided that we had sampled Klamath Marsh well enough. Early indications are that we found the following species of Trepanedoris there:
- Bembidion acutifrons (all the males were of the shiny form)
- Bembidion ?anguliferum
- Bembidion concretum
- Bembidion “Lost Lake”
This was an excellent set of specimens to examine in more detail under the scope and with DNA analyses, and we have high hopes that we will learn some important aspects of Trepanedoris from them.
Before we headed back to Corvallis, Mike (the manager of the wildlife refuge) showed us a few cool things, including the “House of Horrors”, as he called it.
Mike was a fantastic host, very welcoming, and providing all that we might wish. His hospitality makes it even more likely that we will be back there to see what beetles can be found in the marsh in the middle of the summer.
After a rather lengthy delay on I-5 driving home, we arrived in Corvallis around 7:30 pm on Sunday, tired but very happy about our excellent adventure.