Beetles of North Carolina
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Scientific Name: Common Name:
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View Carabidae Members:
Members of Trechus:
3 NC Records

Trechus schwarzi scopulosus Barr, 1979 - No Common Name

Taxonomy
Family: Carabidae Subfamily: Trechinae                                                             
Comments: One of 82 species in this genus that have been recorded in North America north of Mexico, 42 of which occur in North Carolina (Bosquet, 2012). Trechus schwarzi belongs to subgenus Trechus and is included in the Hydropicus Species Group by Barr (1979, 1985). Other members of this group that occur in North Carolina are Trechus hydropicus, caliginis, mitchellensis, carolinae, and roanicus; Trechus cumberlandus is the only other member of this group and is restricted to the Cumberland Plateau in Kentucky and Tennessee.
Species Status: The type locality of this subspecies is Craggy Dome in Buncombe County (Barr, 1979).
Identification
Field Guide Descriptions: Online Resources: BugGuide, Wikipedia, GBIF   iNaturalistTechnical Description, Adults/Nymphs: Barr (1979)                                                              
Comments: Members of this genus show too little variation in pattern for standard photographs to be used to identify particular species.
Total Length [body plus wings; excludes ovipositor]: 3.4-3.7 mm, mean 3.5 (Barr, 1979)
Structural Features: This subspecies is smaller than the nominate form and differs in other measurements and in features of the aedeagus (Barr, 1979)
Distribution in North Carolina
County Map: Clicking on a county returns the records for the species in that county.
Flight Dates:
 High Mountains (HM) ≥
 4,000 ft.
 Low Mountains (LM) <
 4,000 ft.
 Piedmont (Pd)
 Coastal Plain (CP)
Click on graph to enlarge
Habitats and Life History
Habitats: All locations where this species was recorded by Barr (1979) are above 5,000' in elevation. Details of the habitat were not given but includes both Spruce-fir Forests, present at Mt. Mitchell, and high elevation hardwood forests, present at Craggy Dome and at the Pinnacle.
See also Habitat Account for General High Elevation Forests
Diet: Predatory on small insects and other invertebrates
Observation Methods:
Abundance/Frequency:
Adult Phenology: Not enough information exists for this species to determine its phenology
Status in North Carolina
Natural Heritage Program Status: [SR]
Natural Heritage Program Ranks: [GNRTNR] [SHS1]
State Protection:
Comments: This subspecies is endemic to the Black and Craggy Mountains massif and is likely to be highly vulnerable to the warming and drying effects of climate change. The last records for this beetle are presumably those made by Barr in 1960.