L. discoidea Kellicott, 1887

Lagenophrys discoidea Kellicott 1887: 232; Kane 1965: 121.

Lagenophrys labiata Wallengren 1900: 359-363; von Ubisch 1913: 43, 44, 46, 47, 75; Monard 1920: 104; Keiser 1921: 286-287, 291; Penard 1922: 304-308, 313, 314; Abonyi 1928: 9, 18; Swarczewsky 1930: 457, 458, 460, 464, 503; Mouchet-Bennati 1932: 149; Wang and Nie 1933: 89-90; Willis 1942: 172; Finley 1943: 113; Finley 1946: 70-71; Debaisieux 1959: 369; Felgenhauer 1979: 591 (species reported on ostracods).

Lagenophrys wallengreni Abonyi 1928: 9, 18; Kahl 1935: 794, 796, 797; Lust 1950: 351-352; Kane 1965: 121; Stiller 1971: 227; Felgenhauer 1979: 591, 594.

Circolagenophrys entocytheris Jankowski 1986: 79 -80, 88.

Museum Depositions. USNM. 42309 Neotype; 42310, 42311, 42312, 42313, 42314, 42315.

Habitat. Freshwater.

Distribution. BR: Neartic, Neotropical, Palaeartic (Mayén-Estrada & Aguilar-Aguilar 2012).

Argentina: Buenos Aires, San Miguel del Monte lagoon.

Canada: Ontario, 3.2 km WSW Crystal Beach, Point Abino, swamp at jct. Pt. Abino Rd./Erie Rd. (42°51'32.60"N, 79°5'42.16"W).

China: Jiangsu (Kiangsu) (32°2'55.10"N, 118°45'12.50"E); Najing (Nanking) (32°3'49.84"N, 118°47'52.24"E).

Sweden: Malmöhus, near Landskrona, small pond at the base of the Ronnebergagard (55°52'31.71"N, 12°50'32.15"E).

Switzerland: Solothurn, Seewen lake (47°25'43.26"N, 7°39'41.50"E). Basel, near Basel, Schusterinsel (47°33'21.07"N, 7°35'38.05"E). French portion of Switzerland, near Behringersmuhl, Stempfermuhl spring.

Ukraine: Dnieper Basin (47°38'26.35"N, 35°5'10.30"E).

USA: Florida, Franklin Co., 10.7 km N Carrabelle, flooded pit alongside state secondary road 67 (29°56'42.60"N, 84°37'52.98"W). Georgia, McIntosh Co., Sapelo Island, ponds near ocean beach at S end of island (31°23'6.38"N, 81°16'37.34"W). Illinois, Lake Charleston, Coles Co. (39°28'10.99"N, 88°9'2.08"W). Louisiana, Orleans Pa., 2.9 km S Green's Ditch, oxbow of Bayou LeSaire alongside U.S. 90 (30°7'0.81"N, 89°45'48.45"W). Michigan, Oakland Co., 7.2 km SW Pontiac, ditch running into Pine L. at N shore (42°37'38.06"N, 83°19'5.66"W). Missouri, Jefferson Co., 2.4 km NE De Soto center, Joachim Cr. at MO 110 (38°9'30.83"N, 90°32'46.34"W); Jefferson Co., 4.3 km NNE Hillsboro, creek running parallel with State Highway 21 at Hayden Rd. (38°16'14.36"N, 90°33'21.04"W). New York, Oswego Co., 4.5 km SSW West Monroe, swamp near Oneida Lake alongside Shaw Dr. (43°14'45.40"N, 76°6'4.01"W); Oswego Co., 8.6 km WSW Sandy Creek center, Sandy Pond (North Pond) at Ouderkirk Rd. (43°37'54.58"N, 76°11'17.70"W). North Carolina, Alleghany Co., 3.0 km NW Twin Oaks, New R. at state secondary road 1345 (36°33'4.15"N, 81°10'54.11"W); Franklin Co., 10.4 km E Youngsville, Crooked Cr. at U.S. 401 (36°0'44.25"N, 78°21'40.00"W); Onslow Co., Topsail Island, West Onslow Beach, pond just S jct. NC 210 with state secondary road 1568 (34°29'27.25"N, 77°25'35.51"W); Tyrrell Co., Columbia, drainage ditch (35°55'11.93"N, 76°15'17.23"W); Wake Co., 6.4 km E Rolesville, Little R. upstream from state secondary road 2224 (35°55'0.42"N, 78°23'45.83"W). Oregon (45°36'41.35"N, 122°31'25.24"W). Virginia, Grayson Co., 5.1 km S Independence, New R. at U.S. 21-221 (36°34'34.63"N, 81° 9'27.31"W).

Hosts. Argentina: Heterocypris similis (Wierzejski) (cited as Cyprinotus similis) (lateral and marginal surface of carapace). Canada: Cypris sp., Candona elliptica Furtos, Candona sp. (external surface carapace). China: Cypris sp. (carapace). Sweden: small, greenish ostracods. Switzerland: Cyclocypris ovum (Jurine), Cypridopsis vidua (O. F. Mueller), Candona neglecta G. O. Sars, Cypria ophtalmica (Jurine) (carapace). Ukraine: Cypris sp., Eucypris sp. USA: (in all cases on external surface carapace): Ankylocythere hobbsi (Hoff), A. ancyla (Crawford), Candona neglecta, Chlamydotheca arcuata (Sars), Cyclocypris ovum, C. sharpei Furtos, Cypria obesa Sharpe, C. ophtalmica, Cypridopsis vidua (O. F. Mueller), Dactylocythere daphniodes (Hobbs), D. jeanae Hobbs, Donnaldsoncythere donnaldsonensis (Kie), Thermastrocythere riojai (Hoff) .

References. Clamp 1984, 1990a; Boshko 1992; Claps & Sampóns 1994.