Season shown in 7 of Ohio's 88 counties. Explore Ohio
No result yet (43)
Recorded, too few records for a result (36)
Recorded, season not shown (2)
Season shown (7)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
Maroon-legged Lion Fly by Ohio county: records and mapped range
County
Records
Adams County
28 · Season shown
Allen County
Recorded, too few records for a result
Ashland County
No qualifying records yet
Ashtabula County
No qualifying records yet
Athens County
No qualifying records yet
Auglaize County
No qualifying records yet
Belmont County
No qualifying records yet
Brown County
Recorded, too few records for a result
Butler County
56 · Season shown
Carroll County
No qualifying records yet
Champaign County
Recorded, too few records for a result
Clark County
Recorded, too few records for a result
Clermont County
42 · Recorded, season not shown
Clinton County
Recorded, too few records for a result
Columbiana County
No qualifying records yet
Coshocton County
No qualifying records yet
Crawford County
Recorded, too few records for a result
Cuyahoga County
No qualifying records yet
Darke County
Recorded, too few records for a result
Defiance County
Recorded, too few records for a result
Delaware County
Recorded, too few records for a result
Erie County
Recorded, too few records for a result
Fairfield County
Recorded, too few records for a result
Fayette County
Recorded, too few records for a result
Franklin County
123 · Season shown
Fulton County
Recorded, too few records for a result
Gallia County
No qualifying records yet
Geauga County
No qualifying records yet
Greene County
25 · Recorded, season not shown
Guernsey County
No qualifying records yet
Hamilton County
62 · Season shown
Hancock County
Recorded, too few records for a result
Hardin County
Recorded, too few records for a result
Harrison County
No qualifying records yet
Henry County
Recorded, too few records for a result
Highland County
No qualifying records yet
Hocking County
No qualifying records yet
Holmes County
No qualifying records yet
Huron County
No qualifying records yet
Jackson County
No qualifying records yet
Jefferson County
No qualifying records yet
Knox County
No qualifying records yet
Lake County
No qualifying records yet
Lawrence County
No qualifying records yet
Licking County
Recorded, too few records for a result
Logan County
Recorded, too few records for a result
Lorain County
Recorded, too few records for a result
Lucas County
90 · Season shown
Madison County
Recorded, too few records for a result
Mahoning County
No qualifying records yet
Marion County
Recorded, too few records for a result
Medina County
No qualifying records yet
Meigs County
No qualifying records yet
Mercer County
No qualifying records yet
Miami County
Recorded, too few records for a result
Monroe County
No qualifying records yet
Montgomery County
85 · Season shown
Morgan County
No qualifying records yet
Morrow County
Recorded, too few records for a result
Muskingum County
No qualifying records yet
Noble County
No qualifying records yet
Ottawa County
Recorded, too few records for a result
Paulding County
Recorded, too few records for a result
Perry County
No qualifying records yet
Pickaway County
Recorded, too few records for a result
Pike County
No qualifying records yet
Portage County
No qualifying records yet
Preble County
Recorded, too few records for a result
Putnam County
No qualifying records yet
Richland County
Recorded, too few records for a result
Ross County
Recorded, too few records for a result
Sandusky County
Recorded, too few records for a result
Scioto County
Recorded, too few records for a result
Seneca County
No qualifying records yet
Shelby County
Recorded, too few records for a result
Stark County
No qualifying records yet
Summit County
No qualifying records yet
Trumbull County
No qualifying records yet
Tuscarawas County
No qualifying records yet
Union County
Recorded, too few records for a result
Van Wert County
No qualifying records yet
Vinton County
No qualifying records yet
Warren County
21 · Season shown
Washington County
No qualifying records yet
Wayne County
No qualifying records yet
Williams County
Recorded, too few records for a result
Wood County
Recorded, too few records for a result
Wyandot County
Recorded, too few records for a result
No mapped range from the range source used, the USGS Gap Analysis Project, which maps land vertebrates only.
Season
When it is recorded
In Warren County
Late July to mid-September, middle week Aug 30 – Sep 5
Middle week · Aug 30 – Sep 5
This week · Nov 8–14
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Warren County · records of all species each week, 16,872 in all
Records per week from 21 records in 8 of the 10 years from 2016 to 2025. Shows when people recorded it, not how common it is. The grey bars show how many records of all species were made here each week, so you can see when recording itself was high or low; the season is not adjusted by them.
Recorded on 19 dates. Latest record: September 2025.
Show as a table
Records of Maroon-legged Lion Fly in Warren County each week, and records of all species
Week
Records of Maroon-legged Lion Fly
Years recorded
Records of all species
Jan 4–10
0
0
108
Jan 11–17
0
0
29
Jan 18–24
0
0
28
Jan 25–31
0
0
37
Feb 1–7
0
0
23
Feb 8–14
0
0
38
Feb 15–21
0
0
66
Feb 22–28
0
0
65
Mar 1–7
0
0
53
Mar 8–14
0
0
70
Mar 15–21
0
0
116
Mar 22–28
0
0
117
Mar 29 – Apr 4
0
0
396
Apr 5–11
0
0
254
Apr 12–18
0
0
324
Apr 19–25
0
0
336
Apr 26 – May 2
0
0
539
May 3–9
0
0
323
May 10–16
0
0
423
May 17–23
0
0
420
May 24–30
0
0
378
May 31 – Jun 6
0
0
696
Jun 7–13
0
0
759
Jun 14–20
0
0
727
Jun 21–27
0
0
558
Jun 28 – Jul 4
0
0
552
Jul 5–11
0
0
695
Jul 12–18
0
0
643
Jul 19–25
0
0
564
Jul 26 – Aug 1
2
1
530
Aug 2–8
1
1
491
Aug 9–15
2
2
720
Aug 16–22
1
1
565
Aug 23–29
4
3
534
Aug 30 – Sep 5
3
2
719
Sep 6–12
4
3
619
Sep 13–19
1
1
584
Sep 20–26
2
1
390
Sep 27 – Oct 3
0
0
403
Oct 4–10
1
1
264
Oct 11–17
0
0
277
Oct 18–24
0
0
266
Oct 25–31
0
0
204
Nov 1–7
0
0
159
Nov 8–14
0
0
141
Nov 15–21
0
0
78
Nov 22–28
0
0
220
Nov 29 – Dec 5
0
0
53
Dec 6–12
0
0
58
Dec 13–19
0
0
45
Dec 20–26
0
0
75
Dec 27 – Jan 2
0
0
140
Reported as an adult
No records here are marked as adults yet, so there is no adult season to show. One needs at least 20 records from 5 different years.
Reported as a larva
No records here are marked as larvae yet, so there is no larva season to show. One needs at least 20 records from 5 different years.
In Ohio
Late July to mid-September, middle week Aug 23–29
Middle week · Aug 23–29
This week · Nov 8–14
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Ohio · records of all species each week, 1,691,199 in all
Records per week from 885 records in 10 of the 10 years from 2016 to 2025. Shows when people recorded it, not how common it is. The grey bars show how many records of all species were made here each week, so you can see when recording itself was high or low; the season is not adjusted by them.
Recorded on 369 dates. Latest record: October 2025.
Show as a table
Records of Maroon-legged Lion Fly in Ohio each week, and records of all species
Week
Records of Maroon-legged Lion Fly
Years recorded
Records of all species
Jan 4–10
0
0
6,211
Jan 11–17
0
0
5,146
Jan 18–24
0
0
4,645
Jan 25–31
0
0
4,698
Feb 1–7
0
0
6,023
Feb 8–14
0
0
5,888
Feb 15–21
0
0
5,436
Feb 22–28
0
0
6,846
Mar 1–7
0
0
8,321
Mar 8–14
0
0
10,384
Mar 15–21
0
0
12,620
Mar 22–28
0
0
13,949
Mar 29 – Apr 4
0
0
19,661
Apr 5–11
0
0
26,860
Apr 12–18
0
0
39,925
Apr 19–25
0
0
41,623
Apr 26 – May 2
0
0
56,391
May 3–9
0
0
52,952
May 10–16
1
1
53,785
May 17–23
0
0
57,698
May 24–30
0
0
54,651
May 31 – Jun 6
0
0
53,099
Jun 7–13
0
0
53,700
Jun 14–20
0
0
56,625
Jun 21–27
0
0
55,361
Jun 28 – Jul 4
1
1
58,477
Jul 5–11
1
1
61,336
Jul 12–18
3
2
64,722
Jul 19–25
19
7
69,753
Jul 26 – Aug 1
37
8
59,416
Aug 2–8
73
9
59,712
Aug 9–15
147
10
55,994
Aug 16–22
129
10
54,328
Aug 23–29
130
9
51,772
Aug 30 – Sep 5
117
10
57,167
Sep 6–12
102
10
59,075
Sep 13–19
60
10
54,543
Sep 20–26
30
8
45,860
Sep 27 – Oct 3
14
6
43,180
Oct 4–10
12
5
37,841
Oct 11–17
7
3
30,824
Oct 18–24
2
2
21,156
Oct 25–31
0
0
19,021
Nov 1–7
0
0
14,172
Nov 8–14
0
0
12,621
Nov 15–21
0
0
7,965
Nov 22–28
0
0
8,136
Nov 29 – Dec 5
0
0
6,083
Dec 6–12
0
0
6,004
Dec 13–19
0
0
5,423
Dec 20–26
0
0
5,661
Dec 27 – Jan 2
0
0
8,459
Reported as an adult
Usually reported as an adult late July to mid-September, middle week Aug 23–29.
From 107 records that are marked as adults. Not every photo is marked with a life stage, so this shows when people reported it as an adult, not when adults are about.
Reported as a larva
No records here are marked as larvae yet, so there is no larva season to show. One needs at least 20 records from 5 different years.
What these results show
These results show when people recorded a species, not when or where it occurs. Missing weeks and low counts do not mean absence or scarcity, and counts are not abundance. Contributed records reflect where, when and what people chose to observe.
Identification
How to identify it
Telling it apart
From what Ohio’s records show. Only what the records support is shown.
Eastern Lion FlyPromachus rufipesOften confused in Ohio: 34 identifications in Ohio named one where the other was meant
Northeastern HammertailEfferia aestuans25 identifications worldwide named one where the other was meant
From iNaturalist’s similar-species counts, refreshed monthly: confusions in Ohio first, then worldwide. Only species with an Ohio result are listed.
Months not reported
Jan: no record
Feb: no record
Mar: no record
Apr: no record
May: recorded
Jun: recorded
Jul: recorded
Aug: recorded
Sep: recorded
Oct: recorded
Nov: no record
Dec: no record
Not reported in Ohio in November to April, 2016 to 2025.
Land cover where it is recorded
Land cover
Its recordsAll Ohio records
Forest
46%31%
Developed
33%49%
Farmland
12%11%
Wetland
5%5%
Grassland and shrub
2%0.9%
Open water
2%3%
Barren
0.2%0.6%
From 454 records placed within 100 m, beside all Ohio records placed the same way. People record where they go, so this shows where records come from, not where the species lives. Land cover: USGS Annual NLCD, 2025 (opens in a new tab)
Sources
Where these results come from
Records from iNaturalist research-grade observations and expert-identified GBIF datasets, CC0, CC BY and CC BY-NC. Sources
Seasons use the published method and its evidence thresholds. Methods
A spreadsheet (CSV) with a link to each record, on iNaturalist or GBIF. Records whose location was hidden by the observer or the source are counted but not linked.
