Isthmocoris
McAtee, 1914
big-eyed bugs
Species Guides
3- Isthmocoris imperialis(big-eyed bug)
- Isthmocoris piceus(big-eyed bug)
- Isthmocoris slevini
Isthmocoris is a of big-eyed bugs in the Geocoridae, established by McAtee in 1914. The genus contains at least four described distributed in the Americas. Members of this genus are predatory true bugs characterized by their enlarged . The type species is Isthmocoris piceus, originally described as Salda picea by Say in 1831.
Pronunciation
How to pronounce Isthmocoris: //ˌɪsθmoʊˈkɔːrɪs//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Isthmocoris can be distinguished from other Geocoridae by their relatively elongate body form and the structure of the male genitalia. The genus is characterized by a narrow isthmus-like connection between the and pronotum, which contributes to its name. Species-level identification requires examination of genitalic characters and subtle differences in coloration and body proportions.
Images
Distribution
The is distributed in the Americas, with records from North America (United States, Mexico) and Central America. Specific distribution details for individual species vary, with I. piceus and I. imperialis having broader ranges.
Similar Taxa
- GeocorisBoth belong to Geocoridae and share the 'big-eyed bugs,' but Geocoris generally have a more robust, oval body shape compared to the more elongate form of Isthmocoris.
- GermalusAnother geocorid with superficially similar appearance, but Germalus typically have different antennal segment proportions and male genitalic structures.
More Details
Etymology
The name Isthmocoris derives from Greek 'isthmos' (narrow passage or neck) and 'coris' (), referring to the constricted appearance between the and pronotum.
Type species designation
Isthmocoris piceus (Say, 1831) was designated as the type when McAtee established the in 1914, transferring it from the genus Salda where it was originally described.