Head: Face white, top of head with long white hair on female. Male eyes touching, no hair. Eyes reddish-brown. Dark stripe down middle below antenna base.
Antenna: Base black, last segment light brown, large, rounded.
Thorax: Entirely brassy-brown covered with pale yellowish hair, including thorax sides.
Wings: Clear, veins brown, yellowish at base. Halteres yellow. Calypters whitish with yellowish fringe.
Legs: Thighs (femora) black, hind one yellow with extensive black tip. Shins (tibiae) yellow with black tips. All covered with short yellowish hair. Feet yellow, last segment black. Toes yellow.
Abdomen: Mostly black, with short white hair along side edges. Segment 2 has yellow triangle at each side, pointing to center. Segment 3 has some yellow on side edge, wider at base of segment, larger on female.
Underside yellow, except segment 4 wide black at center.
Size: 9 to 11 mm.
Flight Time: May to June
Life Cycle: Unknown. Most larvae of this genus live in decaying wood or under bark, some use wet treeholes.
Comments: Kent County – Rondeau Provincial Park. Georgian Bay area.
Synonyms: Walker 1849
Xylota badia, Eristalis intersistens, Criorhina intersistens, Cynorhina badia
List of the Specimens of Dipterous Insects in the collection of the British Museum, 1849, Pt. III by Walker, pp. 559, 615 to 616.
United States National Museum, 1886, Vol. 31: Synopsis of N.A. Syrphidae by Williston, pp. 212 to 213.
Entomological News, 1913, Vol. 24: On Criorhina intersistens by Johnson, pp. 293 to 294.
Ohio State University, 1953: Thesis: Syrphidae by Weems. pp. 408 to 409.
University of Kansas Science Bulletin, 1924, Vol. 15, by Curran, pp. 133 to 134.