@Dak.the.bug I'm sorry for the delays. I don't know if iNaturalist is a reliable source to see how many species occurs there, especially for Cicindelinae, or many potentially confusing groups. There are many professionals, but there are many crappy amateurs too, such as ones stating "
I'm the first one to publish this record at here!"
In case
Cicindela spp. you can hardly ever collect ANY with pitfall trap. Try get a butterfly net and go for it! Go search the sand marshals, bayou, or any water during the day. The most active time of the day is probably when it is hot hot HOT!! They love to run and fly near there nest. Probably sometime between 11AM to 3PM.
View attachment 1477
Attached is an image of
Cicindela chiloleuca Fisher, I collected near an old salt field in South Korea. Many species in
Cicindela, including
C. scutellatis seems to love the salt marshes.
@The Mantis Menagerie I haven't collected
Tetracha for years now. Probably a decade? They were never my favorite group, so I only collected couple times, and gave it all away to a colleague. The habitats I placed traps were near water or forest with river next to it. I don't know the details of Cicindelinae, but it seems there are different group for habitat. There are some species that can be found near water, while some species can be found without water present nearby. I happened to have some experience in collecting four or five species of
Cicindela spp. in South Korea, and one found in heavily forested mountain (without any water nearby), while all others were found in salt marsh. The image attached above is one of it, collected at an old salt field. They never overlapped in habitat wise. (this is what I experienced from only couple collection trips, not multi-year researches).
Unfortunately, I have no pictures of pitfall traps still alive in my computer. All I use is a small cup (but in depth of over 2 inches) with little bitty of cheap red wine ($7-10). Don't have to pour in a lot of wine. Just a sip of it. like quarter inch depth of wine in a cup. If you are setting and picking them up daily, then yea. If you are picking them up every once in a while, then you probably need little more than a quarter inch of wine, but would not recommend it. Set them up where sunlight is fully or at least partially available.