Species Details
Gyrinus maculiventris
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
SeasonalityMay to August. Most Frequently collected July to August.
IdentificationElongate and moderately convex (Fall 1922). Dorsum of abdominal segments 4-7 medially black, abruptly changing to orange laterally (Oygur and Wolfe 1991). Hardened fore wing (elytra) with 11th row (most lateral) of elytral punctures (stria) close to margin in apical half (posterior of body). Elytra shiny, lacking evident microreticulation. Apical margin of male genitalia (aedeagus) sinuate, basally flattened. Male length 5.0-5.9 mm and width 2.8-3.1 mm. Female length 6.0-6.5 mm and width 3.1-3.4 mm (Oygur and Wolfe 1991).
Scientific Name
Gyrinus maculiventris
Habitat
More likely to be collected from surface lentic waters. Also found on surface lotic waters.
Seasonality
May to August. Most Frequently collected July to August.
Identification
Elongate and moderately convex (Fall 1922). Dorsum of abdominal segments 4-7 medially black, abruptly changing to orange laterally (Oygur and Wolfe 1991). Hardened fore wing (elytra) with 11th row (most lateral) of…
Elongate and moderately convex (Fall 1922). Dorsum of abdominal segments 4-7 medially black, abruptly changing to orange laterally (Oygur and Wolfe 1991). Hardened fore wing (elytra) with 11th row (most lateral) of elytral punctures (stria) close to margin in apical half (posterior of body). Elytra shiny, lacking evident microreticulation. Apical margin of male genitalia (aedeagus) sinuate, basally flattened. Male length 5.0-5.9 mm and width 2.8-3.1 mm. Female length 6.0-6.5 mm and width 3.1-3.4 mm (Oygur and Wolfe 1991).
Life History
Has been collected in schools of mixed species also containing G. minuts, G. pectoralis, and G. picipes (Fall 1922).
Conservation
Not apparently threatened.
Range
New Brunswick to Alaska. Alaska south to West Virginia.
Citation
Page Citation for Gyrinus maculiventris
Page Citation
"Species Details - Gyrinus maculiventris, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-5967. Accessed 04 May. 2024.
References
Author
Oygur, S. and G. W. Wolfe
Title
Classification, distribution, and phylogeny of North American (north of Mexico) species of Gyrinus Muller (Coleoptera: Gyrinidae).
Publication Date
1991
Series Title
Bulletin of the American Museum of Natural History
Volume
207
Pages
1-97
Author
Fall, H. C.
Title
The North American species of Gyrinus (Coleoptera).
Publication Date
1922
Series Title
Transactions of the American Entomological Society
Volume
47
Pages
269-306
Specimen Information
There are 23 specimens of this Species.
UASM93663 - Gyrinus maculiventris
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Castor
Collected ByCarr, F. S.
Date Collected1920-09-11
UASM93664 - Gyrinus maculiventris
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Collected ByCarr, F. S.
Date Collected1918-04-27