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 haoe 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). This species was placed in the Vandykei Species Group by Barr (1979). This group now contains 10 species, all of which occur in North Carolina with some extending into the neighboring states (Bosquet, 2012).
Species Status: The type locality is Haoe Lead in the Unicoi Mountains, Graham County (Barr, 1979)
Identification
Field Guide Descriptions: Online Resources: BugGuide, Wikipedia, GBIF   iNaturalistTechnical Description, Adults/Nymphs: Barr (1979)                                                              
Comments: "Form small, robust, sub-convex; color piceous, shining, all appendages pale, contrasting" (Barr, 1979). Members of this genus generally show too little variation in pattern for standard photographs to be used to identify particular species.
Total Length [body plus wings; excludes ovipositor]: 2.6-2.9 mm, mean 2.7 (Barr, 1979)
Structural Features: As a member of subgenus Microtrechus, only the first segment of front tarsus is enlarged in males. This species is distinguished from other members of its species group morphometrically and by 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: Haoe Lead is a summit that is 4800' in elevation and is covered with high elevation hardwoods
See also Habitat Account for General High Elevation Forests
Diet: Predatory on small insects and other invertebrates
Observation Methods:
Abundance/Frequency:
Adult Phenology:
Status in North Carolina
Natural Heritage Program Status: [SR]
Natural Heritage Program Ranks: GNR [S1]
State Protection:
Comments: This species is known from just two high summits in the Unicoi Mountains of Graham County. As with other members of this genus -- most of which appear climate relicts -- the warming and drying impacts of climate change are likely to pose a significant threat to its populations.