Hydroptilidae (Trichoptera) are aptly known as microcaddisflies and have characteristic life histories with case construction and most growth during the final larval instar. Knowledge of the caddisfly biodiversity in a region requires multiple survey sites across a large area, whereas assessing the conservation status of species, especially those with limited distributions, requires multiple survey sites within smaller areas. We used both strategies by (1) surveying for hydroptilids in a western Oklahoma site, an area without previous surveys, and (2) conducting a targeted survey in a five-county area for two Oklahoma-rare species, Hydroptila protera Ross 1938 and Mayatrichia ponta Ross 1944. We found six new state records [Hydroptila arctia Ross 1938, H. argosa Ross 1938, H. modica Mosely 1937, H. pecos Ross 1941, Neotrichia osmena Ross 1944, and Ochrotrichia capitana (Ross 1944)], many of which were on the eastern edge of the species' ranges. The two target species had multiple new occurrences, including extending into nearby watersheds; this information will aid in their conservation asessment. The information gained on these two surveys indicates the need for further regional surveys at both the fine and coarse scales.

We report first record for the mayfly species Waynokiops dentatogriphus Hill, Pfeiffer & Jacobus 2010 from a wadeable stream in Missouri based on aquatic macroinvertebrate community samples collected during September 2021 from a reach of the Meramec River in Dent County in the Ozark Highlands Ecological Section of the state. Select physical and water quality characteristics from the reach are also provided.

Dung beetles improve soil health by speeding up the process of dung incorporation into the soil. This is facilitated by adult dung beetles burying large amounts of dung as provisions for their young, which can improve soil nutrient cycling and structure. Limited information exists on Montana dung beetle species, so we capitalized on an opportunity to collect a limited but valuable set of specimens during spring 2017. Here, we present rank abundance data from an observational study at five Montana sites. We collected adults using cow dung-baited traps at five sites. We report here on catches of Aphodiini, Onthohpagini, Canthonini, and Phanaeini in Montana, including three newly documented species. Our catches indicate that species of tunneler and roller dung beetle may vary across habitats and soil types, suggesting that conservationandenhancement of species may be easiest to achieve when localized land characteristics are incorporated into a management plan.