Agricultural-indicator
Guides
Colliuris pensylvanica
Long-necked Ground Beetle
Colliuris pensylvanica is a small ground beetle in the family Carabidae, tribe Odacanthini, commonly known as the long-necked ground beetle. Adults measure 5.8–7.2 mm in length. The species has undergone extensive taxonomic revision, with multiple historical names now synonymized under the current valid name. It occurs across a broad geographic range in North America and the Caribbean.
Histerini
clown beetles
Histerini is a tribe of clown beetles (Histeridae) comprising at least 540 described species. Members are primarily associated with decomposing organic matter, particularly dung, where they function as predators. The tribe includes genera such as Hister, Margarinotus, and Atholus. Several species have experienced population declines in parts of their range due to agricultural intensification.
Phylloneta impressa
Forest Cobweb Weaver
Phylloneta impressa is a small comb-footed spider (Theridiidae) with a Holarctic distribution. Males measure 2.5–5.5 mm and females 3.5–5.5 mm. The species constructs tangle webs beneath retreats on vegetation and has been documented in agricultural settings including rape fields. It is closely related to and frequently confused with Phylloneta sisyphia.
Trechus quadristriatus
Four-lined ground beetle
Trechus quadristriatus is a small ground beetle in the family Carabidae, distributed across North America, Europe, temperate Asia, and Africa. It has been studied primarily in agricultural landscapes, where its ecology has been examined alongside similar carabid species. The species is one of many in the large genus Trechus, which comprises numerous small, often difficult-to-distinguish ground beetles.