Stomis
Clairville, 1806
Species Guides
2Stomis is a of ground beetles in the Carabidae, tribe Pterostichini, established by Clairville in 1806. The genus contains more than 40 described distributed across woodland in Europe and Asia, with particular diversity in China. Chinese species have been organized into five species-groups based on morphological characteristics. Species-level within Stomis has undergone significant revision, with numerous synonymizations and new described in recent decades.
Pronunciation
How to pronounce Stomis: //ˈstoʊ.mɪs//
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Identification
Chinese of Stomis can be identified using morphological characters including body size and proportions, pronotum shape and constriction pattern, size relative to body, length, elytral shape (rounded versus flattened), and striation depth and punctation. Species-groups are distinguished by combinations of these traits: the S. chinensis-group includes larger species with varying elytral flattening and striation patterns; the S. robustus-group contains smaller species with square shoulders and well-developed ; the S. vignai-group shows pronounced pronotal variation; and the S. exilis-group is characterized by elongate body forms with rounded .
Images
Habitat
Woodland . Chinese occur in montane regions of Sichuan, Shaanxi, Hubei, Henan, and Yunnan provinces.
Distribution
Europe (Denmark, Norway, Sweden recorded) and Asia, with highest diversity in China. Chinese records include eastern Sichuan, western Shaanxi, Hubei, Henan, and Yunnan.
Similar Taxa
- Other Pterostichini generaStomis shares tribe-level characteristics with other Pterostichini but is distinguished by -specific combinations of body proportions, pronotal and elytral detailed in regional identification keys.
More Details
Taxonomic instability
The has experienced substantial nomenclatural revision. The 2021 review of Chinese Stomis alone proposed nine new , seven new synonyms, and two new status changes, reflecting ongoing refinement of boundaries.