Season shown in 4 of Ohio's 88 counties. Explore Ohio
No result yet (27)
Recorded, too few records for a result (50)
Recorded, season not shown (7)
Season shown (4)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
Transverse-banded Flower Fly by Ohio county: records and mapped range
County
Records
Adams County
Recorded, too few records for a result
Allen County
Recorded, too few records for a result
Ashland County
Recorded, too few records for a result
Ashtabula County
25 · Recorded, season not shown
Athens County
Recorded, too few records for a result
Auglaize County
No qualifying records yet
Belmont County
No qualifying records yet
Brown County
Recorded, too few records for a result
Butler County
Recorded, too few records for a result
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
Recorded, too few records for a result
Clinton County
No qualifying records yet
Columbiana County
No qualifying records yet
Coshocton County
Recorded, too few records for a result
Crawford County
Recorded, too few records for a result
Cuyahoga County
121 · Season shown
Darke County
Recorded, too few records for a result
Defiance County
No qualifying records yet
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
No qualifying records yet
Franklin County
104 · Season shown
Fulton County
Recorded, too few records for a result
Gallia County
Recorded, too few records for a result
Geauga County
Recorded, too few records for a result
Greene County
24 · Recorded, season not shown
Guernsey County
No qualifying records yet
Hamilton County
132 · Season shown
Hancock County
Recorded, too few records for a result
Hardin County
No qualifying records yet
Harrison County
No qualifying records yet
Henry County
No qualifying records yet
Highland County
Recorded, too few records for a result
Hocking County
Recorded, too few records for a result
Holmes County
Recorded, too few records for a result
Huron County
Recorded, too few records for a result
Jackson County
No qualifying records yet
Jefferson County
No qualifying records yet
Knox County
Recorded, too few records for a result
Lake County
37 · Recorded, season not shown
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
47 · Recorded, season not shown
Madison County
Recorded, too few records for a result
Mahoning County
Recorded, too few records for a result
Marion County
No qualifying records yet
Medina County
Recorded, too few records for a result
Meigs County
No qualifying records yet
Mercer County
Recorded, too few records for a result
Miami County
Recorded, too few records for a result
Monroe County
No qualifying records yet
Montgomery County
32 · Recorded, season not shown
Morgan County
Recorded, too few records for a result
Morrow County
No qualifying records yet
Muskingum County
Recorded, too few records for a result
Noble County
No qualifying records yet
Ottawa County
Recorded, too few records for a result
Paulding County
No qualifying records yet
Perry County
No qualifying records yet
Pickaway County
No qualifying records yet
Pike County
No qualifying records yet
Portage County
Recorded, too few records for a result
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
No qualifying records yet
Scioto County
Recorded, too few records for a result
Seneca County
Recorded, too few records for a result
Shelby County
No qualifying records yet
Stark County
23 · Recorded, season not shown
Summit County
82 · Season shown
Trumbull County
Recorded, too few records for a result
Tuscarawas County
Recorded, too few records for a result
Union County
Recorded, too few records for a result
Van Wert County
No qualifying records yet
Vinton County
Recorded, too few records for a result
Warren County
Recorded, too few records for a result
Washington County
Recorded, too few records for a result
Wayne County
Recorded, too few records for a result
Williams County
Recorded, too few records for a result
Wood County
23 · Recorded, season not shown
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 Lucas County
Early May to late July, middle week late June, and again late August to early October, middle week early September
Recorded in two separate seasons, each shown with its own early, middle and late weeks.
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Lucas County · records of all species each week, 60,335 in all
Records per week from 47 records in 9 of the 10 years from 2016 to 2025. Shows when people recorded it, not a season or how common it is.
Show as a table
Records of Transverse-banded Flower Fly in Lucas County each week, and records of all species
Week
Records of Transverse-banded Flower Fly
Years recorded
Records of all species
Jan 4–10
0
0
168
Jan 11–17
0
0
125
Jan 18–24
0
0
85
Jan 25–31
0
0
64
Feb 1–7
0
0
81
Feb 8–14
0
0
84
Feb 15–21
0
0
100
Feb 22–28
0
0
101
Mar 1–7
0
0
137
Mar 8–14
0
0
150
Mar 15–21
0
0
202
Mar 22–28
0
0
278
Mar 29 – Apr 4
0
0
355
Apr 5–11
0
0
421
Apr 12–18
0
0
788
Apr 19–25
0
0
700
Apr 26 – May 2
0
0
1,295
May 3–9
0
0
2,514
May 10–16
3
3
5,269
May 17–23
1
1
4,884
May 24–30
1
1
1,850
May 31 – Jun 6
0
0
1,817
Jun 7–13
2
2
1,677
Jun 14–20
2
2
1,553
Jun 21–27
1
1
1,586
Jun 28 – Jul 4
6
4
1,749
Jul 5–11
3
2
1,976
Jul 12–18
3
3
2,118
Jul 19–25
3
3
2,090
Jul 26 – Aug 1
0
0
1,646
Aug 2–8
2
2
1,938
Aug 9–15
0
0
1,606
Aug 16–22
0
0
1,660
Aug 23–29
4
4
1,644
Aug 30 – Sep 5
4
3
1,585
Sep 6–12
5
2
1,913
Sep 13–19
0
0
1,724
Sep 20–26
3
2
2,839
Sep 27 – Oct 3
2
1
2,478
Oct 4–10
2
2
2,869
Oct 11–17
0
0
1,470
Oct 18–24
0
0
598
Oct 25–31
0
0
496
Nov 1–7
0
0
365
Nov 8–14
0
0
264
Nov 15–21
0
0
168
Nov 22–28
0
0
160
Nov 29 – Dec 5
0
0
127
Dec 6–12
0
0
133
Dec 13–19
0
0
113
Dec 20–26
0
0
152
Dec 27 – Jan 2
0
0
170
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 May to mid-September, middle week Jul 19–25
Middle week · Jul 19–25
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 1,143 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 617 dates. Latest record: September 2025.
Show as a table
Records of Transverse-banded Flower Fly in Ohio each week, and records of all species
Week
Records of Transverse-banded Flower 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
2
2
39,925
Apr 19–25
7
5
41,623
Apr 26 – May 2
6
4
56,391
May 3–9
11
7
52,952
May 10–16
10
5
53,785
May 17–23
14
5
57,698
May 24–30
25
8
54,651
May 31 – Jun 6
27
6
53,099
Jun 7–13
41
8
53,700
Jun 14–20
44
9
56,625
Jun 21–27
60
9
55,361
Jun 28 – Jul 4
98
10
58,477
Jul 5–11
106
8
61,336
Jul 12–18
110
9
64,722
Jul 19–25
108
9
69,753
Jul 26 – Aug 1
60
9
59,416
Aug 2–8
73
9
59,712
Aug 9–15
41
8
55,994
Aug 16–22
49
9
54,328
Aug 23–29
35
9
51,772
Aug 30 – Sep 5
48
8
57,167
Sep 6–12
40
8
59,075
Sep 13–19
57
9
54,543
Sep 20–26
34
7
45,860
Sep 27 – Oct 3
20
8
43,180
Oct 4–10
9
6
37,841
Oct 11–17
6
3
30,824
Oct 18–24
2
1
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 May to late September, middle week Jul 26 – Aug 1.
From 127 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.
Narrow-headed Marsh FlyHelophilus (Helophilus) fasciatus53 identifications worldwide named one where the other was meant
Common Drone FlyEristalis (Eristalis) tenax47 identifications worldwide named one where the other was meant
Eurasian Drone FlyEristalis (Eoseristalis) arbustorum38 identifications worldwide named one where the other was meant
Western Honey BeeApis mellifera26 identifications worldwide named one where the other was meant
Black-shouldered Drone FlyEristalis (Eoseristalis) dimidiata15 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: recorded
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 March, 2016 to 2025.
Land cover where it is recorded
Land cover
Its recordsAll Ohio records
Developed
72%49%
Forest
12%31%
Farmland
11%11%
Wetland
4%5%
Barren
0.3%0.6%
Grassland and shrub
0.2%0.9%
From 592 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.
