Eristalis transversa

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Eristalis transversa
Transverse Flower Fly (Eristalis transversa) - MacGregor Point Provincial Park 01.jpg
Male
Eryngium yuccifolium-Eristalis transversa-female.jpg
Female
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Diptera
Family: Syrphidae
Genus: Eristalis
Species:
E. transversa
Binomial name
Eristalis transversa
(Wiedemann, 1830) [1]
Synonyms [2]
  • Eristalis fascicollis Say, 1835
  • Eristalis philadelphicus Macquart, 1842
  • Eristalis pumilus Macquart, 1842
  • Eristalis transversus Wiedemann, 1830
  • Eristalis vittata Macquart, 1834
  • Eristalis zonatus Bigot, 1880
  • Eristalomyia calomera Bigot, 1880

Eristalis transversa, the transverse banded drone fly, is a common species of syrphid fly first officially described by Wiedemann in 1830. [1] 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 nectar and protein-rich pollen. The larvae are rat-tailed type but larvae of this specific species has not been reported. [3] [2] [4] [5]

Contents

Distribution

external map Species reported from North America east of the Mississippi River and into Southeastern Canada.

Description

For terms see Morphology of Diptera. external images

Size
7–12 mm (0.28–0.47 in)

Eristalis transversa male.png

Head
The eyes are pilose on upper half and broadly contiguous in the male. The front is black, shining in the middle, black pile on the sides. The female also with black pile, narrowed above but on the lower two-thirds reddish pollinose. The antennae are reddish yellow. The basal portion of arista sparsely plumose. The sides of the face covered with dense whitish pollen and whitish pile, the median stripe (tubercle) and cheeks are shining black.
Thorax

The notum is opaque black, with three grayish olive transverse bands. The pleurae covered with thick yellow pile. The scutellum is bright yellow, with narrow black along its base.

Abdomen

The first segment black; second segment with large yellow lateral triangles (smaller in the female), and narrow posterior yellow ring, against a black background that extending narrowly to the lateral margins; third segment with large spots on the sides in front connected by a yellow ring against a black background a yellow ring borders the rear of the segment. The female has only a posterior yellow ring on a black background. Fourth segment with a small yellow spot on the front quarters, and a posterior yellow ring, remainder of the segment opaque black with an entire shining cross-band before the middle of the segment. The female has only a posterior yellow ring on a black background. Hypopygium shining black.

Wings

The wings are hyaline. The basal portion a little yellowish. Noteworthy veination - Spurious vein (sv), looping of R4+5 into r4+5, closed cell r2+3.anterior cross- vein (r-m) near the middle of discal cell (dm), oblique.

Legs

The legs are variably coloured usually black with the tip of femora and base of tibiae yellow. Sometimes the distal half of all the femora and the base of bind tibiae, femora, and the larger portion of the tarsi are yellow or more rarely the front and middle legs may be almost wholly yellow and the black confined to outer part of bind femora. The tip of the hind tibiae, and tip of all the tarsi?? [6] [7]


Related Research Articles

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<i>Eristalis flavipes</i> Species of fly

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<i>Helophilus lapponicus</i> Species of fly

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<i>Arctosyrphus willingii</i> Species of fly

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<i>Palpada agrorum</i> Species of fly

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<i>Blera pictipes</i> Species of fly

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<i>Blera confusa</i> Species of fly

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<i>Blera robusta</i> Species of fly

Blera robusta, the Greenish Wood Fly, is a rare species of syrphid fly first officially described by Curran in 1922. Hoverflies get this name 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 the flowers from which they get both energy-giving nectar and protein rich pollen. The larvae are of the rat-tailed type, feeding on exuding sap or in the rot holes of trees.

<i>Blera humeralis</i> Species of fly

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<i>Palpada albifrons</i> Species of fly

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<i>Eristalis hirta</i> Species of fly

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<i>Eristalis brousii</i> Species of fly

Eristalis brousii, also called the hourglass drone fly or flower fly, is a species of syrphid fly largely eliminated in most of its former range except in northern Canada. It was first officially described by Williston in 1882. The cognomen "flower fly" derives from the fact that the flies are commonly found on and surrounding flowers from which they source energy-restoring nectar and protein-rich pollen. The larvae are aquatic filter-feeders of the rat-tailed sort.

Microdon ruficrus, the spiny-shield ant fly, is an uncommon species of syrphid fly observed in the eastern United States and adjacent Canada. Hoverflies can remain nearly motionless in flight. The adults are also known as flower flies for they are commonly found on flowers from which they get both energy-giving nectar and protein-rich pollen. Larvae have been found from the nests of Lasius americanus formerly Lasius alienus. GBIF external link to images

References

  1. 1 2 Wiedemann, Christian Rudolph Wilhelm (1830). Aussereuropäische Zweiflügelige Insekten. Vol. 2. Retrieved 21 April 2020.
  2. 1 2 "Eristalis transversa Report". Integrated Taxonomic Information System. Retrieved 2019-09-23.
  3. ↑ Skevington, Jeffrey H (2019). Field Guide to the Flower Flies of Northeastern North America. ISBN   9780691189406.
  4. ↑ "Eristalis transversa". GBIF. Retrieved 2019-09-23.
  5. ↑ Hull, Frank Montgomery (1925). "A Review of the Genus Eristalis Latreille in North America". The Ohio Journal of Science. 25: 11–45. hdl:1811/2257.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  6. ↑ Williston, S.W. (1887). "Synopsis of the North American Syrphidae". Bulletin of the United States National Museum. 31: 1–335.

Further reading


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