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The abdomen is short, oval; black, shining, with short black pile. The sides of the second segment are broadly orange yellow. The third segment is less broadly orange-yellow and the fourth segment is narrowly orange-yellow. The black ground color is, however, almost wholly obscured by thick woolly
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first officially described by
Williston in 1887. Hoverflies get their names from the ability to remain nearly motionless while in flight. The adults are also known as flower flies for they are commonly found around and on flowers, from which they get both energy-giving
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The legs are black, with yellowish white pile. The base of middle femora and basal two-thirds of hind femora are yellow. The basal end of front and middle tibiae and all the tarsi, except the last two joints and hind metatarsi are yellow.
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is black, thickly dusted with white on the sides, and with a bare black median stripe vitta and the cheeks shining. The face is considerably excavated below, produced downward and somewhat forwards. The
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orange yellow pile, extending less broadly on the sides of the third segment, and narrowly on the margin of the fourth. The pile of the second segment in the middle is short yellow.
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and Blera postpronotum are, shining black, with rather abundant, obscurely yellow pile. The pile is black across the middle. The
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The wings are somewhat brownish, a little lighter at the base. There is a darker cloud near the fork of the second (R
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is broader above than in the preceding species, mostly shining, with rather long yellowish pile; The
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is almost straight and joins the costa just before the tip of the wing. The first posterior cell R
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is relatively small, The occiput is black, with yellowish pile and gray pollen.
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542:""Contribution to a monograph of the American Syrphidae north of Mexico""
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is acute apically and extends almost to the wing margin before the tip.
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This article incorporates text from this source, which is in the
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565:"Contribution to a monograph of the North American Syrphidae"
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Field Guide to the Flower Flies of
Northeastern North America
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type, feeding on exuding sap or in the rot holes of trees.
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of the eastern and central areas of the United States.
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305:reddish-brown, and the flagellum is orbicular. The
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480:Bulletin of the United States National Museum
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476:"Synopsis of the North American Syrphidae"
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825:Taxa named by Samuel Wendell Williston
546:The Kansas University Science Bulletin
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563:Williston, Samuel Wendell (1882).
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540:Curran, Charles Howard (1925).
515:Skevington, Jeffrey H (2019).
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438:dorsal view of Syrphid thorax
331:are black with yellow pile.
758:. You can help Knowledge by
220:, is an uncommon species of
820:Hoverflies of North America
319:The dorsum of the thorax,
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737:
810:Insects described in 1882
750:This article relating to
474:Williston, S. W. (1887).
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41:Scientific classification
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23:
815:Diptera of North America
233:. The larvae are of the
569:Proc. Amer. Philos. Soc
414:profile syrphid head
262:Morphology of Diptera
354:) and third veins (R
196:Criorhina umbratilis
307:frontal prominence
152:B. umbratilis
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720:Open Tree of Life
597:Taxon identifiers
229:and protein-rich
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16:Species of fly
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251:External map
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241:Distribution
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707:NatureServe
681:iNaturalist
486:: xxx + 335
256:Description
222:syrphid fly
118:Eristalinae
114:Subfamily:
799:Categories
458:References
402:Insect leg
390:wing veins
245:This is a
235:rat-tailed
78:Arthropoda
805:Milesiini
752:Milesiini
620:Q10740372
325:scutellum
200:Williston
178:Williston
146:Species:
128:Milesiini
108:Syrphidae
64:Kingdom:
58:Eukaryota
712:2.949958
629:BugGuide
614:Wikidata
552:: 7–216.
303:antennae
187:Synonyms
104:Family:
74:Phylum:
68:Animalia
54:Domain:
725:4355405
673:5071118
579:23 July
335:Abdomen
180:, 1882)
134:Genus:
124:Tribe:
98:Diptera
94:Order:
88:Insecta
84:Class:
699:141338
686:493581
660:750274
634:555461
523:
490:1 July
329:pleura
321:scutum
313:Thorax
231:pollen
227:nectar
216:, the
202:, 1882
754:is a
388:Blera
294:front
292:The
274:10mm.
139:Blera
756:stub
694:ITIS
668:GBIF
647:M6NK
581:2021
521:ISBN
492:2015
370:Legs
364:4+5
356:4+5
352:2+3
346:Wing
327:and
298:face
286:Head
271:Size
655:EoL
642:CoL
360:4+5
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466:^
264:.
787:e
780:t
773:v
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494:.
176:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
