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Species Lejops chrysostomus

Syrphid fly - Lejops chrysostomus Lejops chrysostomus - male Lejops chrysostomus - male Lejops chrysostomus - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Aschiza")
Family Syrphidae (Syrphid Flies)
Subfamily Eristalinae
Tribe Eristalini
Subtribe Helophilina
Genus Lejops
No Taxon (subgenus Anasimyia)
Species chrysostomus (Lejops chrysostomus)
Synonyms and other taxonomic changes
Eristalis chrysostoma Wiedemann 1830; Lejops relictus Curran & Fluke 1926; Helophilus relictus Skevington 2001; Anasimyia chrysostoma Skevington 2019
Size
8 to 10 mm long.
Identification
Thorax: Both male and female have 4 wide grey to yellowish-white stripes. Scutellum black, lower margin yellowish to reddish.
Abdomen: Female has thick, greyish-white curved and broken stripes on each segment, lower margin of segments has a narrow white line. Male stripes same as female, but narrower, last half or more of abdomen red.
Season
Mid-May to September
Remarks
Types:
Holotype as Eristalis chrysostoma female by Wiedemann, 1830. Type Locality: Unknown. Possibly in Naturhistorisches Museum Wien (Vienna) Austria which holds most of his diptera types, including several types by Thomas Say; some parts of his collection were destroyed by fire at the museum in 1848.
Holotype as Lejops relictus male by Curran & Fluke, 1926. Type Locality: Ontario. In the Canadian National Collection, Ottawa, Ontario. Type #2222.
Print References
Aussereuropaische Zweiflugelige Insekten, 1830 Vol. 2 by Wiedemann, pg. 174.
Transactions of Wisconsin Academy of Science and Arts, 1926, Vol 22 by Curran and Fluke, pp. 256-259 and 261-263.
Ohio State University, 1953, Thesis Weems Syrphidae, pp. 454 -455.
Insects of North Lambton, 2001 by Skevington, pg. 111.
CNC spreadsheet (.xls) Sept, 2013: Lejops chrysostomus Comment: Holotype of Lejops relictus & Lejops orion.
Field Guide to the Flower Flies of Northeastern North America, 2019 by Skevington et al., pg. 80.