Ostracods of North America

Lorain, Erie and Geauga Counties Ohio

John Lavelle johnnlavelle@gmail.com

Collected, Compiled and photographed by John Lavelle johnnlavelle@gmail.com

Identification of almost all the following ostracods was made by:

Professor Alison Smith

Dept. of Geology

Kent State University

Ostracods found so far.

Identification by Professor Alison Smith

Candona

Candona decora (Furtos 1933)

Candona crogmaniana (Turner 1894)

Candona punctata

Candona alibicans juvenile

Candona distincta Furtos, 1933 (Female)

Candona elliptica

Candona ohioensis Erie County only

Candona stagnalis or Candona compressa

Candona candida

Candona truncata Geauga County only

Candona fossulensis Hoff Geauga county only

Candona acuta My Identification Columbia Reservation Co25 12/18/2017

Fabaeformiscandona Tamara Karan-Žnidaršič

Bradleystrandesia

Bradleystrandesia tincta (Furtos, 1933)

Bradleystrandesia cf. elongata (Dobson, 1941)

Bradleystrandesia splendida (Furtos 1933)

Bradleystrandesia fuscata Burkhard Scharf

Cyprios

Cyprios marginata (Strauss, 1821)

Physocypria

Physocypria globula (Furtos 1933)

Physocypria pustulosa Furtos, 1933

Cypria

Cypria exculpta (Fisher 1844)

Cypria ophthalmica (Jurine 1820)

Pseudocypridopsis

Potamocypris.

The green makes me think they may be P. smaragdina, but there are others in Ohio A.S.

Heterocypris

Heterocypris incongruens

Cypridopsis

Cypridopsis vidua

Potamocypris (possibly smaragdina )

Cyclocypris

Cyclocypris ovum (Jurine, 1820)

Cyclocypris ampla Geauga County only

Ilyocypris

Ilyocypris gibba Erie county only (running water)

Eucypris species??

Eucyprid ??

Dolerocypris sinensis

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Edison Woods Ew20 4/24/2020

Pseudocypridopsis ??? David Horne

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A Guide to the Ostracods of Lorain County, Ohio

the crescent shaped ostracodes full of green pigment are genus Potamocypris. Keying out the species needs the 'scope, as the shell differences can be determined by front/back left/right shell overlap. The green makes me think they may be P. smaragdina, but there are others in Ohio

Howard Marsh Lucas County Ohio 11/11/2022

===========================================================================================================

looks like Dolerocypris sinensis to me. Interesting story about this sp in Ohio. Its an invasive from rice fields, and during the canal days it entered the shallow canal waterways in northeast Ohio prob from eggs in bags of rice that were cargo, and then spread. Norma Furtos tracked it from the canals way back in the 1930's. Norma wrote Ostracoda of Ohio, a 1933 monograph we still use today.

We know it is in Ohio, and I have found it sporadically from Maryland thru PA. Also, it is now in the US rice fields too. Its very pretty!

A. Smith

From Charlemont Lorain Metroparks 6/29/2020

Pond where above found.

================================================================================================================================

acc. to the color the upper animal can be Bradleystrandesia fuscata. 'B.

fuscata occurs normaly in stagnant waters, but also in springs (Meisch

2000). I could not see the small one. And the lower picture I can see

only the posterior part. Cypria exsculta has a characteristic sculpture

of the carapace, valves with dedicate longitudinal striations!

Best regards and good succes

Burkhard Scharf

From Cold Creek Castilia Ohio 3/18/2017

It could be Fabaeformiscandona.

In dorsal view it is laterally compressed, and to be sure about genus,

the setae on the mandibular palp should be checked.

Call A the smaller Candona upper right

B the larger one on the left

The smaller one on bottom right is an immature Bradleystrandesia tincta

Tamara Karan-Žnidaršič

Assistant professor

Institute of Zoology

Faculty of Biology

University of Belgrade

Studentski trg 16

Black River Br37 12/16/2018

This is a temporary spring the water sin the area is only 10 to 15 cm. deep.

For a size comparison the lower is a mature Candona decora (male)

CANDONA

Candona acuta My Identification

Columbia Reservation Co25 12/18/2017

GPS 41.30773,-81.92035

=====================1mm.===========================

Candona punctate 1/27/2016

Columbia Reservation Co8

PERMANENT

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Candona punctate Geauga County 1/20/2017

Burton Wetlands

Gps 41.4440533,-81.177135

Candona punctate Candona punctate Lorain County

Carisle Reservation 2/27/2017

GPS 41.3021033,-82.1436083

=====================1mm.===========================

Candona elliptica Male 11/17/2015

Sylvester Wetland Sy4 PERMANENT

GPS 41.3118367,-82.1274467

=====================1mm.===========================

Candona crogmaniana female 12/05/2015

Black River Res. Br22 TEMPORARY

GPS 41.4167417,-82.10248

Hi, you are right, they are same species, different sexes. The upper one is indeed Candona crogmaniana female, and the lower one is the male of the same species. The eggs are visible through the carapace in the female, and the zenker's organ (a kind of sperm pump) is visible in the male.

Plum Brook Pc1 1/26/2018

GPS 41.4251083,-82.6391833

=====================1mm.===========================

Candona distincta Female 4/17/2014

Sylvester Wetlands TEMPORARY

GPS 41.3082,-82.1298917

C. distincta also found at High Meadow Hi2 2/21/2016

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=====================1mm.===========================

Candona alibicans juvenile 6/23/2014

Crook Rd. B TEMPORARY

GPS 41.2588617,-82.0652167

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Candona alibicans Geauga County 1/20/2017

Burton Wetlands

Gps 41.4440533,-81.177135

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The most widespread of all the Candona in the pools sampled.

CANDONA DECORA 12/10/2015

=====================1mm.===========================

KOPF WOODS KW6 SEMI-PERMENANT

GPS 41.508765,-82.0136067

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CANDONA OHIOENSIS female 2/06/2016

=====================1mm.===========================

EAGLE POINT (ERIE COUNTY)

GPS 41.4310717,-82.64306

CANDONA OHIOENSIS This is my Id. not Prof. Smith

=====================1mm.===========================

Bw13 2/05/2016 vermilion Bacon Woods

GPS 41.384235,-82.3208033

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Candona stagnalis or Candona compressa size is critical here and I will check the taxonomic refs when i get back. Either way, it is common in wetland environments, even in very small vernal pools. Professor A. Smith

Black River Reservation Br25 3/23/2016

GPS 41.410505,-82.09826

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Candona candida 12/14/2015

Kayak Area K3 12/14/2015

Gps 41.458725,-82.1064567

Upper left Candona candida Geauga County Jan. 20, 2017

Burton Wetlands

GPS 41.4440533,-81.177135

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Candona truncata Geauga County 1/20/2017

Burton Wetlands

Gps 41.4440533,-81.177135

Beaver Creek Bp1 2/28/2019 Lorain County

Left Candona truncata right C. (decora)

70 71 72

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Candona fossulensis Hoff Geauga County 1/20/2017

Burton Wetlands

Gps 41.4440533,-81.177135

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More than one Candona occurring in the same pool at the same time of year is not unusual. The highest number Of the genus occurring in one pool at the same time was four.

C. distincta C. crogmaniana

C. elliptica C. decora

KOPF WOODS SEMI-PERMENANT

GPS 41.508765,-82.0136067

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CYPRIDOPSIS

Cypridopsis vidua 9/06/2014

======1mm.===========

Crook Road

GPS 41.2595367,-82.072575

Another example of Cypridopsis vidua

=====================1mm.===========================

South Carisle

GPS 41.27938,-82.15774

The three Cypridopsis below were all found in the same pool on the same date and give an indication of the carapace's color differences. This is a very widespread species

Cypridopsis vidua 10/26/2015

======1mm.===========

Black River Old Railroad Bridge

Cypridopsis vidua 10/26/2015 GPS 41.4237483,-82.0992217 ======1mm.=========== ======1mm.===========

========================================================================================================================== CYPRIA

Cypria exculpta Probably the most widely distributed ostracod in the county and appears at all times of the year

======1mm.=========== 2-15-2016

James Day Jd1

GPS 41.4585183,-82.1064183

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Cypria ophtalmica 3/26/2014

=====================1mm.===========================

Bur Oaks-Black River Reservation GPS 41.435295,-82.1023833

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Cyprios

Has been in 3 locations in the county.

Cyprios marginata 5/02/2014

=====================1mm.===========================

Wellington Reservation

GPS 41.14494,-82.230615

Cyprios marginata My Identification not Prof. Smith

French Creek Kayak K4 4-08-2016 Gps 41.458075,-82.10682

Cyprios marginata My Identification not Prof. Smith

Sheffield Lake Sr3 4/04/2016

Gps 41.4814567,-82.1012633

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CYCLOCYPRIA

This is the only location in the county this ostracod was found

Cyclocypris ovum JULY 6,2014

=====================1mm.===========================

WELLINGTON RESERVATION

GPS 41.150305,-82.2300883

Cyclocypris ampla Geauga County 1/20/2017

Middle red ball

Burton Wetlands

Gps 41.4440533,-81.177135

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Physocypria

Physocypria globula 6/30/2014

=====================1mm.===========================

Columbia Reservation

Gps 41.30835,-81.922

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Physocypria pustulosa 9/06/2014

======1mm.===========

Crook Rd.

Gps 41.2583717,-82.0672467

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Bradleystrandesia

Carapace shape and color are variable

Bradleystrandesia tincta 1.00 mm Bradleystrandesia tincta .75mm.

======1mm.=========== ======1mm.===========

Wellington Reservation 5-02-2014 Sylvester Wetlands 4/17/2014

GPS 41.1451433,-82.2308467 GPS 41.3100633,-82.1302233

Below are different shapes and colors of Bradleystrandesia tincta found in different locations throughout the county. This ostracod species is widespread.

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Bradleystrandesia cf. elongata 12/19/2012

=====================1mm.===========================

Location Lorain County

=============================================================

Bradleystrandesia splendida 2/12/2013

=====================1mm.===========================

Schwartz Rd. Park Avon, Ohio

Other examples of B. splendida

======1mm.=========== ======1mm.===========

==========================================================================================================================

Bradleystrandesia fuscata Edison Woods Ew19 4/18/2019

Gps 1.3426083,-82.48205

Bradleystrandesia fuscata Schoepfle Garden Sg4 3-08-2017

Gps 41.325085,-82.35416

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---------------------------------------------------------------------------------------------------

Heterocypris incongruens 4/12/2015

=====================1mm.===========================

Carisle Reservation - South

GPS 41.2789283,-82.1596767

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Erie County

Ilyocypris gibba Temporary overflow stream bed April 18, 2016

-------------------------- 0.5 mm. ----------------------------------------------------------

Hoffman Forest GPS 41.32002,-82.5265133

Eucypris species?? This is a tentative Identification.

=====================================1mm.===============================

Black River Reservation

GPS 41.410505,-82.09826

From Erie County.

female Candona ohioensis, and it looks to me like she is carrying eggs, so that makes sense, they reach adulthood and start breeding in the winter.

Per Professor Smith

======1mm.=========== ======1mm.===========

looks like a male Candona decora. per Professor Smith

======1mm.=========== ======1mm.=========== ======1mm.===========

Candona crogmaniana per Prof. Smith

======1mm.=========== ======1mm.===========

"11 species, fauna dominated by swimmers (Bradleystrandesia, Cypria, Physocypria, Cyprois) benthic species are Candonids. Surprised to see no Heterocypris incongruens, (found in a bird bath 6/28/2015)) or Eucypris, although the larger one that couldn't fully imaged could be either of these."

Professor A. Smith

https://46a8528c-a-62cb3a1a-s-sites.googlegroups.com/site/ostracodsloraincounty/home/2013-02-14-125108.jpg?attachauth=ANoY7cplMwN8K9sUxZC4W3jHHTs7oNIkUXu7XS8B0-B1eyFfzNq97aLq8jvdIsZMeviEMkExt_ZSAqemaaDuyOq1oZfVYUU9-z1_xsjYO3IE3ql6b_kCJi4p6-3cpMheyShAwAqYs2GEcmr9BTBOHw36wmrPyiLqoMu1LQN0GVsLjrnbuOL7Lo85C4FE5EHJ__o7toRYJLaWwXaVurAIhfsjqma17WTKzRWR_dRCdLZuYJMlCCaIe9g2SVfS-4M40UfdAEeA2Ix1&attredirects=0

Candona candida ????????

Candona punctate Columbia Reservation Co8 1/27/2016

Candona ohioensis Dupont State Nature Preserve Erie County

male Candona elliptica Sylvester Wetland Sy4 11/17/2015

Lower left Cypria Black River Res. Br22 12/05/2015

Candona decora Black River Res. Br22 12/05/2015

Candona crogmaniana female Black River Res. Br22 12/05/2015

Candona per Prof. Smith Black RiverRes. old railroad bridge 10/26/2015

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Cypridopsis vidua per Prof. Smith Black RiverRes. old railroad bridge 10/26/2015 80

Cypridopsis vidua per Prof. Smith Black RiverRes. old railroad bridge 10/26/2015

Cypridopsis vidua Male Per A. Smith High Meadows Hi4 9/14

Candona distincta male Per A. Smith High Meadows Hi4 9/14

Candona decora female with EGGS per A. Smith High Meadows Hi4 9/14

Cypria exsculpta per A. Smith Crook Rd. Cr6 9/15/2015

Heterocypris incongruens 6/28/2015 From a bird bath Lorain County

1) Wellington Reservation R 5/02/2014 Cyprios marginata (Strauss, 1821)

2) South Carisle R 7/28/2014 Columbia Reservation B 6/30/2014 Physocypria globula (Furtos 1933)

Sandy Ridge Sr 2 4/28/2014 Bradleystrandesia tincta (Furtos, 1933)

Welligton Reservation R 5/2/2014 Bradleystrandesia tincta (Furtos, 1933)

5) Inwood Park 5-11-2014 Cypridopsis vidua,

Bur Oaks Hilltop 5/22/2014 Heterocypris incongruens (Ramdohr, 1808)

6) Bur Oaks, old railroad bridge, 8/7/2014 also Bacon Woods R 8/5/2014 French Creek Kayak 7/31/2014 Physocypria sp

7)Bur Oaks, old railroad bridge, 8/7/2014 Cypridopsis vidua (O.F.Muller, 1776) (ventral view)

8) Wellington Reservation R 7/6/2014 Candona juvenile

9) Wellington Reservation R 7/6/2014 Cyclocypris ovum (Jurine, 1820)

10) Carisle South R 4/21/2014 Candona decora Furtos, 1933 (female-angled view)

11) Carisle South B 4/21/2014 Candona decora Furtos, 1933 male

12) Carisle B 4/3/2014 not an ostracode

13) Pine Tree 3/29/2014 hard to see what this is, not sure its an ostracode

14) Days Dam R 4/14/2014 14 Bradleystrandesia tincta (Furtos, 1933)

15) Pine Tree 3/29/2014 15 not Physocypria-probably a Cyclocypris sp

16) Pine Tree 3/29/2014 juvenile Bradleystrandesia

17) Sandy Ridge Sr 4 B 4/28/2014 Vermilion Bw 2 5/5/2014 Wellington B 5/1/2014 Bradleystrandesia tincta (Furtos, 1933)

18) Bur Oaks 3/26/2014 Cypria ophtalmica (Jurine, 1820)

19) Columbia Reservation Marker 6 4/10/2014 Candona punctata Furtos, John-this 1933 is a great find-it was very common in Ohio in the 1930's but not now.

20) Pine Tree Parking 4/24/2014 Bradleystrandesia sp cf splendida (Furtos, 1933)

21) Pine Tree Parking 4/24/2014 Bradleystrandesia tincta (Furtos, 1933)

22) Sylvester Wetlands B 4/17/2014 Bradleystrandesia tincta (Furtos, 1933)

23) Sylvester Wetland B 4/17/2014 23 Candona juvenile

24) Sylvester Wetland large oxbow 8/30/2014 Bradleystrandesia tincta (Furtos, 1933)

25) Crook Rd. Cr 3 9/06/2014 Physocypria globula (Furtos 1933)

26) Crook Rd. Cr 3 9/06/2014 Cypridopsis vidua (O.F.Muller, 1776)

27) Inwood Park 5/11/2014 Bradleystrandesia juvenile

28) Inwood Park 5/11/2014 not sure what this is-?

29) Inwood Park 5/11/2014 Bradleystrandesia juvenile

30) Crook Rd. Cr 4 9/06/2014 Physocypria pustulosa Furtos, 1933

31) Sylvester Wetland meadow 8/30/2014 looks like Cypridopsis vidua (O.F. Muller, 1776)

32) Sylvester Wetland R 4/17/2014 Candona distincta Furtos, 1933 (Female)

33) Sylvester Wetland 5/26/2014 33 Cypria ophtalmica (Jurine, 1820)

34) South Carisle R 7/28/2014 is Cypridopsis vidua (O.F. Muller, 1776)

35) Crook Rd. R 6/23/2014 Cypria exculpta

36) Crook Rd B 6/23/2014 Candona alibicans juvenile

37) Carisle Woods 6/21/2014 Cypria sp. cf. exsculpta (Fisher, 1855)

38) Days Dam Wetland 6/16/2014 - Cypria sp. cf. exsculpta

39) Vermilion Bacon Woods B 6/13/2014 Bradleystrandesia sp.

40) Indian Hollow B 5/18/2014 Bradleystrandesia tincta (Furtos, 1933)

41) Wellington Reservation R 5/2/2014 Candona juvenile

42) Carisle South B 4/21/2014 Bradleystrandesia tincta (Furtos, 1933)

43) Kopf Woods R 4/16/2014 Candona juvenile

44) French Creek B 4/07/2014 IS THIS EVEN ON OSTRACOD? Not an ostracod

45) Carisle B 4/03/2014 Cypria sp. cf exsculpta (Fisher, 1855)

46) Sandy Ridge R 3/31/2014 Candona decora Furtos, 1933 female

47) Bur Oaks B 3/26/2014 Candona sp - male

48) Bur Oaks Entrance 3/01/2014 48 Cypris sp. - juvenile

55 Columbia Reservation Cr 5 10/9/2014 Physocypria globula Furtos, 1933

56 Carisle Pumpkin Ca 13 10/01/2014 Cypria ophtalmica (Jurine, 1820)

57 South Carisle Ca 12 9/29/2014 Cypria ophtalmica (Jurine, 1820)

58 South Carisle Ca 12 9/29/2014 Cypridopsis vidua (O.F. Muller, 1776)

59 Bur Oaks Black River South Br 13 10/11/2014 Candona juvenile

60

# 60

Columbia Reservation Cr2 12/19/2014 Columbia Reservation Cr2 12/19/2014 #60 60 Physocypria globula Furtos, 1933

61 Pine Tree Pt 8 11-13-2014 Candona crogmaniana Turner, 1894

62 Bur Oaks Bu6 2-08-2015 62 Candona? Angled image

63 Beaver creek Bp2 3-09-2015 63 Heterocypris incongruens (Ramdohr, 1808)

64 Carisle South Ca6 4/12/2015 63 Heterocypris incongruens (Ramdohr, 1808)

2 QZ 1 mm. between black bars

BRADLEYSTRANDESIA

1 Bradleystrandesia tincta (Furtos, 1933) 2 Bradleystrandesia tincta (Furtos, 1933) 3 Bradleystrandesia tincta (Furtos, 1933)

We 4 3/19/2012 Wa 2 3/25/2012 Wa 2 3/25/2012

5 Bradleystrandesia (juvenile) Wa 2 11/14/2012

6 Bradleystrandesia (juvenile) 5 Bradleystrandesia (juvenile)

Wa 1 12/19/2012 Wa 2 11/14/2012

11 Bradleystrandesia tincta (Furtos, 1933) Bradleystrandesia (juvenile)

Wa 1 2/06/2013 2/09/2013

45 Bradleystrandesia (juvenile) 45 enlarged

13 Bradleystrandesia (juvenile) 19 Bradleystrandesia tincta (Furtos, 1933) 20

Sc 1 2/12/2013

20 Bradleystrandesia tincta (Furtos, 1933) 21 Bradleystrandesia tincta (Furtos, 1933)

27 Bradleystrandesia (juvenile) 30 Bradleystrandesia tincta (Furtos, 1933)

37 Bradleystrandesia tincta (Furtos, 1933) 38 Bradleystrandesia (juvenile)

47 Bradleystrandesia tincta (Furtos, 1933) 51 Bradleystrandesia tincta (Furtos, 1933)

52 Bradleystrandesia tincta (Furtos, 1933)

61 Bradleystrandesia juvenile left enlarged Dd 2/04/2014

67 Bradleystrandesia juvenile Bacon Woods 2/17/2014

68 Bradleystrandesia juvenile Enlarged Walker East 2/23/2014

The ostracod on the left 69 Walker Rd. East 12/23/2014

Bradleystrandesia juvenile enlarged

===========================================================================

B. elongata

9 Bradleystrandesia cf. elongata (Dobson, 1941) Wa 1 12/19/2012

10 Bradleystrandesia cf. elongata (Dobson, 1941) some distortion here Wa 1 12/19/2012

54 Bradleystrandesia cf. elongata (Dobson, 1941)

===================================================================================

B. splendida

23 Bradleystrandesia splendida (Furtos 1933) 24 Bradleystrandesia splendida (Furtos 1933)

25 Bradleystrandesia splendida (Furtos 1933) 58 Bradleystrandesia splendidia (Furtos,1933) Sc 1 2/12/2013

=============================================================================================================================

CANDONA

4 Candona (juvenile) Hi 1 11/01/2012 14 Candona decora (Furtos 1933)

46 Candona decora (Furtos 1933) a male 46 enlarged

15 Candona decora (Furtos 1933) Top left 15 Candona decora (Furtos 1933)

Below 16 Bradleystrandesia tincta (Furtos, 1933)

Lower right 17 Candona crogmaniana (Turner 1894)

8 Candona decora (Furtos 1933) Wa 1 12/19/2012

18 Candona (juvenile)

43 Candona juvenile 43 enlarged

44 Candona juvenile 44 enlarged

================================================================================

C. crogmaniana

Candona crogmaniana (Turner 1894)

29 Candona crogmaniana (Turner 1894) 34 Candona crogmaniana (Turner 1894)

36 Candona crogmaniana (Turner 1894) 48 Candona crogmaniana (Turner 1894) a female

66 Candona crogmaniana (Turner 1894) same as left Bacon Woods 2/17/2014

=====================================================================================================================

CYPRIOS

22 Cyprios marginata (Strauss, 1821)

==============================================================================================================

PHYSOCYPRIA

26 Physocypria globula (Furtos 1933) 39 Physocypria globula (Furtos 1933)

40 Physocypria globula (Furtos 1933) 41 Physocypria globula (Furtos 1933)

42 Physocypria globula (Furtos 1933)

============================================================================================================================

CYPRIA

28 Cypria exsculpta (Fisher 1844)

31 below Cypria exsculpta (Fisher 1844) Same as left enlarged

32 Cypria exsculpta (Fisher 1844) 33 Cypria exsculpta (Fisher 1844)

63 Cypria exsculpta (Fischer, 1855) Dd 2/04/2014

64 Pine tree 2/03/2014

Both 64 and 65 Cypria exsculpta (Fischer, 1855) enlarged 65

enlarged 64

65 Cypria exsculpta (Fischer, 1855) enlarged Days Dam 2/13/2014

================================================================================

C ophtalmica

56 Cypria ophtalmica (Jurine 1820) Cr 5 2/01/2014

57 Cypria ophtalmica (Jurine, 1820) Cr 5 2/01/2014

59 Cypria ophtalmica (Jurine, 1820) enlarged Dd 2/04/2014

60 Cypria ophtalmica (Jurine, 1820) enlarged Dd 2/04/2014

55

Added this last one. The reason that I didn't include it with the rest is that is so enormous compared to the other ostracods I've seen that I hesitate to think that it is even an ostracod. This monster is 2 to 3 mm. long.

Too large to photograph could be Eucyprid

Caley 6 2/17/2017

The little on the lower left of 282 next to the large female C.. decora is a real mystery, I've never seen one quite like.

282 283 284

Columbia Reservation Co20 7-06-2016

Columbia Reservation Co16 10/10/2016

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Pine Tree Pt7 11/23/2015