Hardin County

Known species: 56
Total Observations: 1,106
Population: 31,641
Area in Square Miles: 470
People per Square Mile: 67
Observations per Square Mile: 1.8
Percent of State Species: 32%
Percent of State Observations:
0.4%

County iNaturalist observations

The Observed Species table provides statistical data on all odonata species that have been observed in the county. Below that is a Target Species table listing species that have not yet been documented in this county, but are likely to exist in the county. This list is data-driven by listing species records from neighboring counties.

Hardin County Ohio

Observed Species

Common NameScientific NameHardin TotalOhio TotalHardin 2024Last Sighted
Eastern ForktailIschnura verticalis11315,992392024
Widow SkimmerLibellula luctuosa9811,931282024
Familiar BluetEnallagma civile886,173152024
Eastern AmberwingPerithemis tenera8610,887122024
Eastern PondhawkErythemis simplicicollis7516,365162024
Blue DasherPachydiplax longipennis6515,601162024
Fragile ForktailIschnura posita4413,199132024
Common WhitetailPlathemis lydia4212,022182024
Blue-ringed DancerArgia sedula402,83772024
Violet DancerArgia fumipennis violacea397,557112024
Double-striped BluetEnallagma basidens355,343132024
Stream BluetEnallagma exsulans354,80342024
Twelve-spotted SkimmerLibellula pulchella313,740132024
Orange BluetEnallagma signatum293,79132024
Common Green DarnerAnax junius235,160132024
Prince BaskettailEpitheca princeps222,78842024
Blue-fronted DancerArgia apicalis216,58432024
Citrine ForktailIschnura hastata2096202023
Slender SpreadwingLestes rectangularis183,90452024
Halloween PennantCelithemis eponina184,18732024
Black SaddlebagsTramea lacerata143,38042024
Rainbow BluetEnallagma antennatum1248532024
Azure BluetEnallagma aspersum122,48812024
Great Blue SkimmerLibellula vibrans1150172024
Autumn MeadowhawkSympetrum vicinum118,45652024
Dusky DancerArgia translata101,68112024
Wandering GliderPantala flavescens91,52322024
Blue-tipped DancerArgia tibialis84,49222024
Skimming BluetEnallagma geminatum73,83222024
Powdered DancerArgia moesta65,14122024
Calico PennantCelithemis elisa63,19402019
Lancet ClubtailPhanogomphus exilis61,80302023
Shadow DarnerAeshna umbrosa51,18732024
Ebony JewelwingCalopteryx maculata58,60602022
Westfall's Slender BluetEnallagma traviatum westfalli52,36702022
Ruby MeadowhawkSympetrum rubicundulum496501997
Fawn DarnerBoyeria vinosa351901984
Southern SpreadwingLestes australis328401997
Blue-faced MeadowhawkSympetrum ambiguum21,45212024
Royal River CruiserMacromia taeniolata259812024
American RubyspotHetaerina americana24,44401995
Unicorn ClubtailArigomphus villosipes22,06502018
Painted SkimmerLibellula semifasciata21,20802022
Vesper BluetEnallagma vesperum292202019
Common BaskettailEpitheca cynosura287402019
Flag-tailed SpinylegDromogomphus spoliatus280902019
Sweetflag SpreadwingLestes forcipatus251402023
White-faced MeadowhawkSympetrum obtrusum130512024
Slaty SkimmerLibellula incesta14,92002021
Dot-tailed WhitefaceLeucorrhinia intacta11,70202022
Carolina SaddlebagsTramea carolina11,26302020
Ashy ClubtailPhanogomphus lividus11,00902021
Band-winged MeadowhawkSympetrum semicinctum193101958
Turquoise BluetEnallagma divagans191802019
Swamp DarnerEpiaeschna heros171502023
Comet DarnerAnax longipes160502019


Target Species

Target species are potential County Records - species not yet documented in the county. 'Local Obs' is Local Observations and indicates the number of times that the species has been observed in adjacent counties since 2000, and '# of Counties' is the number of adjacent counties in which those recent observations took place. Zero local observations or recent counties means the existing records are historical. 'Peak Active' is a relative description of when the species has been known to fly.

Common NameScientific NameOhio ObsLocal Obs# of CountiesPeak Active
Emerald SpreadwingLestes dryas567546Jun
Swamp SpreadwingLestes vigilax608276Jul
Swift River CruiserMacromia illinoiensis760575Jul-Aug
Elegant SpreadwingLestes inaequalis580575Jun
Great SpreadwingArchilestes grandis959215Sep
Spot-winged GliderPantala hymenaea562115Jul
Midland ClubtailGomphurus fraternus927554late May-mid Jun
Cyrano DarnerNasiaeschna pentacantha321294mid Jun
Gilded River CruiserMacromia pacifica8894late Jul
DragonhunterHagenius brevistylus589123mid Jun
Spatterdock DarnerRhionaeschna mutata39693Jun
Pronghorn ClubtailPhanogomphus graslinellus50383late May-early Jun
Dusky ClubtailPhanogomphus spicatus258222early Jun
Rapids ClubtailPhanogomphus quadricolor377122Jun
Mocha EmeraldSomatochlora linearis20292late Jun-late Aug
Spotted SpreadwingLestes congener86082late Aug-late Sep
Four-spotted SkimmerLibellula quadrimaculata29562Jun
Lyre-tipped SpreadwingLestes unguiculatus21062Jun-Jul
Macromia HybridMacromia pacifica x taeniolata10062late Jul-mid Aug
Spangled SkimmerLibellula cyanea1,19752Jun
Cobra ClubtailGomphurus vastus47152Jun
Springtime DarnerBasiaeschna janata37452May
Slender BaskettailEpitheca costalis2432late May
Amber-winged SpreadwingLestes eurinus70622Jun-Jul
Red SaddlebagsTramea onusta14622Jun-Jul
Eastern Red DamselAmphiagrion saucium1,420341late May-early Jun
Jade ClubtailArigomphus submedianus115201late Jun-late Aug
River BluetEnallagma anna20191Jun
Arrow ClubtailStylurus spiniceps321181late Aug-early Sep
Gray PetaltailTachopteryx thoreyi446151Jun
Tiger SpiketailZoraena erronea126131Jul
Lilypad ForktailIschnura kellicotti858121Jun-Sep
Brown SpiketailZoraena bilineata240121late May-early Jun
Sedge SpriteNehalennia irene39641Jun
Aurora DamselChromagrion conditum57631late May-early Jun
Black-shouldered SpinylegDromogomphus spinosus67121Jun-Jul
Plains ClubtailGomphurus externus23621mid Jun-mid Jul
Handsome ClubtailGomphurus crassus20921late May-early Jun
Clamp-tipped EmeraldSomatochlora tenebrosa21711Aug
Arrowhead SpiketailZoraena obliqua18911late May-early Jun
Variegated MeadowhawkSympetrum corruptum14911Apr-Sep
Golden-winged SkimmerLibellula auripennis4511late Jun
Northern SpreadwingLestes disjunctus2411Jun-Aug
Tule BluetEnallagma carunculatum56900Jun-Jul
Lance-tipped DarnerAeshna constricta36100Sep
Green-faced ClubtailHylogomphus viridifrons9800mid Jun
Hagen's BluetEnallagma hageni8500Jun
Marsh BluetEnallagma ebrium6600mid Jun
Wabash River CruiserMacromia wabashensis2500Aug
Hine's EmeraldSomatochlora hineana2400Jun
Furtive ForktailIschnura prognata500

Hardin County is located in the Till Plains ecoregion, straddling the Continental Divide, and it is primarily agricultural. The northern half of the county is in the Lake Erie Watershed, draining directly north through the Blanchard River, which has its origin in the county (see p. 11 in Ohio Coastal Atlas: Chapter 2 for a detailed watershed map). The southern half of the county is in the Ohio River Watershed, draining through the Scioto River, which crosses both the western and eastern county borders. A small southern portion also feeds the Great Miami headwaters. This is one of our under-represented counties, and any additional observations would be useful.

Places to Visit

  • Saulisberry Park is a community park of Kenton Ohio, providing camping and fishing at the site of an old stone quarry. There is parking and walking access to the water. Odonata species are skimmers and pond damsels. 30 species recorded.

  • Lawrence Woods State Nature Preserve has a small wetland pond and a number of vernal pool areas. The wetland has a platform and is on the boardwalk. 19 species have been identified. Good in the spring before the algae takes over. Consistent site for Great Blue Skimmer when in season. Parking lot, no restrooms.

  • Veterans Memorial Park East side of Kenton, adjacent to the golf course and Scioto River. The park has a small shallow pond and a larger pond used for fishing and to irrigate the golf course. A reliable location for Rainbow Bluet and routine skimmers and other pond damselflies. 31 species have been identified. There are several parking areas and paths.

County Observation Activity

This graph shows the total number of odonata observations for the county in blue, with the average for all Ohio counties in orange. The season is divided into 10 or 11 day segments by Month – basically early-month, mid-month, and late-month.

Page updated 2 January 2025