endemic to a single nation

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

Global Range: (20,000-2,500,000 square km (about 8000-1,000,000 square miles)) Northeastern North America: A substantial total known range from northeastern Maine, southwest to Ohio, south to South Carolina (Needham and Westfall 1955). Area approximately 650 x 2,000 kilometers = 1,300,000 square kilometers (approximately 400 x 1,200 miles = 480,000 square miles).

Comments: Lotic. Overall habitat is clear rivers and streams. There appears to be little known regarding habitat and microhabitat requirements of this species but a mature female was taken perched in the short grasses beside the St. George River in Maine in 1997. The river at this point is moderately wide and shallow, with clear water running over a cobble bottom and few macrophytes.

Non-Migrant: No. All populations of this species make significant seasonal migrations.

Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).

Locally Migrant: No. No populations of this species make annual migrations of over 200 km.

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: 81 to >300

Comments: Based on inventory data from Maine, New York, Massachusetts, Rhode Island, Pennsylvania, New Jersey, Virginia and North Carolina, there could be as many as 249 occurrences in these states. This number is likely an underestimate when you consider the areas that have not been inventoried.

10,000 - 1,000,000 individuals

Canada

Rounded National Status Rank: N3 - Vulnerable

United States

Rounded National Status Rank: N3 - Vulnerable

Rounded Global Status Rank: G3 - Vulnerable

Reasons: Uncommon but not rare, with a moderately large range but partly in areas of heavy development.

Global Short Term Trend: Relatively stable (=10% change)

Comments: No abundance changes not attributable to flight season have been noted.

Global Long Term Trend: Decline of 30-50%

Degree of Threat: B : Moderately threatened throughout its range, communities provide natural resources that when exploited alter the composition and structure of the community over the long-term, but are apparently recoverable

Comments: Current threats appear minor over much of the species' northern range, but habitat threat is probably significant to the south.Potential threats of habitat degradation are the impoundment of running waters by human activities such as poorly drained roads, damming, and also natural activities such as beaver damming (often a transient effect), channelization leading to scour of microhabitats, toxic or organic pollution, introduction of exotic species.

Biological Research Needs: Determine distinquishable exuvial characters between this species and Gomphus adelphus.

Global Protection: Few to several (1-12) occurrences appropriately protected and managed

Comments: No EOs are known from protected areas.

Comments: The classification of the genus Gomphus has long been discussed, a number of subgenera have been proposed, and Carle (1986) made further classification proposals. The distinct status of the species Gomphus abbreviatus is currently accepted. It is currently placed in the genus or subgenus HYLOGOMPHUS by some workers.