The Dragonflies and Damselflies of North Carolina
Home Page Search Odonate Resources
LoginNC Biodiversity ProjectComments
North Carolina's 189 Odonate species
Common Name: Scientific Name:

«      »

Sort Species by: Family   Scientific Name       [ Undocumented ]
Related Species in CORDULIIDAE: Number of records for 2024 = 0

PDF has more details,
e.g., flight data, high counts, and earliest/latest dates can be seen.
[View PDF]		Robust Baskettail (Epitheca spinosa) by Mark Shields
Compare with: Slender Baskettail   Common Baskettail   Mantled Baskettail  
Identification Tips: Move the cursor over the image, or tap the image if using a mobile device, to reveal ID Tips.
Note: these identification tips apply specifically to mature males; features may differ in immature males and in females.
Epitheca_spinosa

[Google images]     [Global Biodiversity Information Facility]      iNaturalist
Map
Click on county for list of all its records for Robust Baskettail
Flight Charts
Distribution Occurs over most of the Coastal Plain and adjacent Piedmont, ranging inland only to Warren, Durham, Chatham, and Moore counties. Seemingly absent in the extreme eastern Coastal Plain, at least in most tidewater counties around the Albemarle and Pamlico sounds. Ranges north to New Jersey, but very rare and sporadic west of the Atlantic Coastal Plain, though there are a few records west to Oklahoma and Texas.
Abundance Probably uncommon, to locally fairly common, over its range in the Coastal Plain and eastern Piedmont. Duncan Cuyler collected large numbers of this species, in several dozen counties, and thus it is not (or was not during his time) a rare species. However, most observers today are either unfamiliar with it or are reluctant to report it, due to difficulty of identification from Common Baskettail. Of note, Cuyler found it "fairly common" in the Dismal Swamp area.
Flight Spring season only, with the flight finishing about as early as any dragonfly species in the state. This flight period in the Coastal Plain is from very late February or early March to early May, and in the Piedmont from late March to early May. The latest state collection record is 4 May (likely the earliest "latest" date for any odonate in NC). Not surprisingly, Dunkle (2000) says "the earliest dragonfly within its range". According to Roble and Cuyler (1998) -- "Cuyler's surveys in North Carolina indicated that this species is fairly common at ponds, swamps and streams of all sizes; adults were found from 17 April to 7 May in western Gates County ... and the Dismal Swamp region ..."
Habitat Still waters of swamps and ponds/pools in or near forests; probably scarce in open water of lakes and ponds.

See also Habitat Account for General Wet-Hydric Forests
Behavior Males patrol along swampy edges near and over water. The now numerous photos of the species have essentially all been from blackwater ponds, creeks, and rivers; thus, it apparently does not occur along wide, slow-moving brownwater rivers and its associated swamps.
Comments Though the species averages slightly longer, huskier (especially in the abdomen), and more hairy in the thorax than Common Baskettail, identification of Robust Baskettail must be made with care, as there are many photos of Common Baskettails (presumably) from the mountains and Piedmont with wide abdomens and very hairy thoraxes. Note the downward and outward "bent" cerci of the males, which can be seen in good photos.

The N.C. Natural Heritage Program now ranks the species as S4, instead of the former S3? rank, as until a few years ago very little was known about the species in the state since Duncan Cuyler's days (1960s to 1990s). But, it is still given a Global Rank of G4; Paulson (2011) says "The sparseness of records south and west of North Carolina is puzzling" and "seemingly rare in most parts of range". This suggests that most of the records rangewide are from NC, and the species is likely much more numerous here than to the north and south. Despite roughly 125 records with dates for NC (most data from the University of Florida museum), the Natural Heritage Program retained the species on its Watch List until 2018, when it was removed owing to an increase in records in 2017-18. Thankfully, Conrad Wernett has netted and photographed several individuals in the hand, in Craven County. Mark Shields, John Petranka, Brian Bockhahn, and Kyle Kittelberger have also added a handful of new recent records, with photos.
State Rank S4
State Status
Global Rank G4
Federal Status
Synonym
Other Name
Species account update: LeGrand on 2023-01-11 13:00:53
Photo Gallery for Robust Baskettail   16 photos are shown. Other NC Galleries:    Jeff Pippen    Will Cook    Ted Wilcox
Photo 1 by: Matt Spangler

Comment: Scotland, 2022-04-10, Lumber River--Turnpike Rd to SP at Chalk Banks (by kayak) - on sandbar about a mile south of Turnpike Rd		Photo 2 by: John Petranka

Comment: Bladen, 2021-03-29, Singletary Lake State Park. CCC Loop Trail and adjacent sand ridges. - 2 males making short patrols near lake outflow. Females away from water in sand ridges.
Photo 3 by: Mark Shields

Comment: Camden, 2018-04-14, Dismal Swamp State Park (DISW) - 2 males, 1 female		Photo 4 by: Mark Shields

Comment: Northampton, 2018-04-14, Northampton Nature Trail, Jackson
Photo 5 by: Mark Shields

Comment: Camden, 2018-04-14, Dismal Swamp State Park (DISW) - 2 males, 1 female		Photo 6 by: John Petranka

Comment: Hoke, 2018-04-04, Lumber River at the US Hwy. 401 bridge; Wagram Boating Access. - Male feeding over a backwater area.
Photo 7 by: Mark Shields and Hunter Phillips

Comment: Scotland, 2018-04-05, Lumber River State Park (LURI) Chalk Banks		Photo 8 by: B. Bockhahn, K. Kittelberger

Comment: Gates, 2017-04-12, Merchants Millpond State Park
Photo 9 by: John Petranka

Comment: Wake, 2017-04-01, Robertson Millpond Preserve, Robertson Pond Road, eastern Wake County. - Male. Patrolling short beats low over the water near the earthen dam. Photo shows spines and downward-angled distal end of cerci.		Photo 10 by: John Petranka

Comment: Wake, 2017-04-01, Robertson Millpond Preserve, Robertson Pond Road, eastern Wake County. - Male. Patrolling short beats low over the water near the earthen dam. Photo shows spines and downward-angled distal end of cerci.
Photo 11 by: Mark Shields

Comment: Onslow, 2017-03-24, Sandy Run Swamp at NC Highway 50 bridge - males patrolling over water		Photo 12 by: Mark Shields

Comment: Pender, 2017-03-01, Holly Shelter Game Land, Greentree impoundment along Northeast Cape Fear River - male
Photo 13 by: Mark Shields

Comment: Pender, 2017-03-01, Holly Shelter Game Land, Greentree impoundment along Northeast Cape Fear River - male		Photo 14 by: Conrad Wernett

Comment: Jones, 2017-02-26, - Recent emerged male and failed emergent
Photo 15 by: Conrad Wernett

Comment: Craven, 2013-04-13, Freshly emerged specimens and patrolling, mating witnesses		Photo 16 by: Conrad Wernett

Comment: Craven, 2013-03-17, 60 degree temps, saw emergers and a couple fliers