Strachiini
Strachiini is a tribe of ( ) within the Pentatominae. The tribe contains at least 13 recognized , including economically significant groups such as Bagrada () and Murgantia (harlequin cabbage ). Members are distributed across multiple continents, with observations particularly numerous in temperate and tropical regions. The tribe was established by Hahn in 1831 with Strachia as the genus.
Pronunciation
How to pronounce Strachiini: //straˈki.i.naɪ//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Strachiini can be distinguished from other Pentatominae tribes by a combination of genitalic and external morphological characters, though specific diagnostic features vary by . The genus Strachia exhibits a characteristic elongated body form compared to many other pentatomines. in the related genera Bagrada and Murgantia often display bold color patterns of black with red, orange, or markings. Accurate tribal assignment generally requires examination of male and other internal structures.
Images
Distribution
Widely distributed across Africa, Asia, Europe, and the Americas. The Bagrada occurs in the Palearctic, Afrotropical, and Nearctic regions, with B. hilaris to North America. Murgantia is primarily Nearctic and Neotropical. The genus Strachia is distributed in the Oriental region. Multiple genera show transcontinental ranges.
Human Relevance
Several contain significant agricultural pests. Bagrada hilaris (Bagrada ) damages cruciferous including cabbage, broccoli, and mustard. (harlequin cabbage bug) is a major pest of Brassica crops in North America. These can cause substantial economic losses through direct feeding damage and of produce.
Similar Taxa
- CarpocoriniAnother large tribe in Pentatominae; Strachiini can be distinguished by differences in male structure and parameters of the , though external similarity requires careful examination.
- PentatominiShares Pentatominae; Strachiini typically has more elongate body proportions and distinct genitalic features separating it from this more diverse and commonly encountered tribe.
More Details
Notable Genera
The Eurydema contains several widespread Palearctic commonly known as cabbage or rape bugs, which feed on Brassicaceae. The genus Stenozygum includes species with distinctive angular body shapes. Seansonius is a more recently described genus (Rider, 1998) containing North species.
Taxonomic History
The tribe has undergone periodic revision, with the -level composition shifting as phylogenetic relationships have been clarified. Some authors have treated certain genera as incertae sedis within Pentatominae rather than definitive Strachiini members.