Platycheirus granditarsus

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Platycheirus granditarsus
Platycheirus.granditarsus.-.lindsey.jpg
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Diptera
Family:
Syrphidae
Genus:
Platycheirus
Subgenus:
Pyrophaena
Species:
P. granditarsus
Binomial name
Platycheirus granditarsus
(Forster, 1771)
Synonyms
  • Musca confusa Harris, 1780
  • Musca granditarsaForster, 1771
  • Platycheirus confusus(Harris, 1780)
  • Platycheirus ocymi(Fabricius, 1794)
  • Pyrophaena granditarsa(Forster, 1771)
  • Syrphus ocymi] Fabricius, 1794

Platycheirus granditarsus, the Hornhand Sedgesitter, is a species of hoverfly. It is found in many parts of Britain North America and Europe. Typical habitat includes marshy meadows and ditches, where it can be found between May and October, though it is at its commonest between July and September. The most distinctive feature of this fly is the red-orange abdomen most easily seen as it takes off or alights. [1] [2] [3]

Contents

Description

For terminology Speight key to genera and glossary

Size

7.7–10.5 mm (0.30–0.41 in)

Head

The face is nearly vertical and the anterior oral margin is produced forward. It is shining, with silver pollinosity present only at lateral edges. The tubercle is somewhat large and abruptly pointed. The vertex is narrow, approximately two times as wide as the ocellar triangle. The antenna is black.

Thorax

The thorax is shining to subshining black and the pile is white or pale yellow. The longest scutellar pile is approximately equal in length to the arista, while other thoracic pile is half as long.

Abdomen

For male specimens, the abdomen is oval, with extensive orange areas. Segment 2 usually has only the anterior and lateral edges black, sometimes with a median black line. Segment 3 has only posterolateral edges black, while segment 4 usually has a basal half that is black, occasionally with a median black line that divides the orange anterior half of the segment into two large spots. Segment 5 is dark and unmarked. The surstylus has a poorly developed basal process. external images

For female specimens, the abdomen is broadly oval, with orange areas similar to males. Segment 2 usually has all edges black, sometimes with a median black line. Segment 3 has a complete posterior black band and sometimes also a median black band that divides the orange area into two spots. Segment 4 usually has a basal half that is black, often with a median black line that divides the orange anterior half of the segment into two large spots. Segment 5 has anterior orange spots.

Wings

The wing is darkened, entirely microtrichose.

Legs

The legs are mostly dark, with broad apices of femora and bases of tibiae pale. The fore femur has short, stiff black setae spaced irregularly on the anteroventral and posteroventral surface. The first fore tarsomere has a large, anterior triangular process on the apical half. The first 4 tarsomeres of the mid leg are strongly flattened, each with a broad, apically rounded process which are progressively shorter from the first to third tarsomere. [4] External images

See references for determination. [5] [6] [7] [8] [9]

Distribution

Palearctic: Fennoscandia south to France and the Alps, Ireland east through Northern Europe and Central Europe into European Russia then across Siberia and the Russian Far East to the Pacific coast. Nearctic: Alaska to Quebec and south to Colorado. [10] [11] [12]

Biology

Habitat: humid grassland subject to flooding, marsh, fen, edges of raised bogs. Flies May to September. [13] It flies May to August.

Related Research Articles

<i>Platycheirus clypeatus</i> Species of fly

Platycheirus clypeatus is a species of hoverfly. It is found across the Palearctic and in the Nearctic. The larvae feed on aphids. Adults are usually found on the edges of woodland or scrub, heath or along hedgerows where they visit a wide range of flowers.

<i>Leucozona lucorum</i> Species of hoverfly

Leucozona lucorum is a Palearctic and Nearctic species of hoverfly.

<i>Parasyrphus</i> Genus of flies

Parasyrphus is a genus of hover fly found in the holarctic area of the world including species like Parasyrphus tarsatus located in some very northern areas. Very few of the 31 identified species have known larvae. Of the known larvae most are predators of tree aphids with one, Parasyrphus nigritarsis, that feed on beetle eggs and larvae.

<i>Platycheirus scutatus</i> Species of fly

Platycheirus scutatus is a very common species of hoverfly. It is a Holarctic species.

<i>Platycheirus manicatus</i> Species of fly

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

Eristalis cryptarum is a holarctic species of hoverfly. Known as the bog hoverfly or bog-dwelling drone fly, it is a bog specialist but may occur in other wetlands. Its larvae are assumed to live in peat that is saturated with water, such as that found in these boggy areas. The female has been observed depositing eggs on and close to very fresh cow dung along oligotrophic seepages in moorland.

<i>Platycheirus rosarum</i> Species of fly

Platycheirus rosarum is a species of hoverfly found in the Holarctic realm. Like its close relative Platycheirus granditarsus, it can be found in marshy meadows and ditches; indeed, the two species can often be found together. The flight time is between May and October, though it peaks in abundance in June and July.

<i>Pipiza noctiluca</i> Species of fly

Pipiza noctiluca is a species of Hoverfly, from the family Syrphidae, in the order Diptera.

<i>Platycheirus angustatus</i> Species of fly

Platycheirus angustatus is a species of hoverfly. It is found in many parts of the Palearctic, and in the Nearctic.

<i>Platycheirus discimanus</i> Species of fly

Platycheirus discimanus, the Yellowfoot Sedgesitter is a small species of hoverfly. It is found across Europe and the Palearctic and in North America.

<i>Platycheirus immarginatus</i> Species of fly

Platycheirus immarginatus, the Comb-legged Sedgesitter, is a common species of hoverfly. It is found in parts of northern Europe and northern North America.

Platycheirus perpallidus is a species of hoverfly. It is a Holarctic species.

Platycheirus podagratus is a species of hoverfly. It is found in the Holarctic.

<i>Paragus haemorrhous</i> Species of fly

Paragus haemorrhous, the Black-backed Grass Skimmer is a common widespread species of hoverfly found in many parts of Europe, Africa and the Nearctic. 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. The larvae are predators on aphids.

<i>Syrphus knabi</i> Species of fly

Syrphus knabi, the Eastern flower Fly, is an uncommon species of syrphid fly observed in the eastern United States and Canada. Syrphid flies are also known as Hover Flies or Flower Flies because the adults are frequently found hovering around flowers from which they feed on nectar and pollen. Adults are 7.2–12.9 mm (0.28–0.51 in) long. The larvae are predators of a variety of aphids in trees.

Blera flukei, the red-cheeked wood fly, is a rare species of syrphid fly first officially described by Curran, 1953 as Cynorhina flukei. 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 of the rat-tailed type, feeding on exuding sap or in the rot holes of trees.

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

Blera confusa, the confusing wood fly, is a common species of syrphid fly first officially described by Johnson, 1913 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 of the rat-tailed type feeding on exuding sap or in the rot holes of trees.

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

Helophilus obscurus , the obscure marsh fly, is a common species of syrphid fly observed throughout Canada and the northern United States and Rocky Mountains. 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. The larvae of this genus are associated with wet decaying organic material, particularly accumulations of decaying vegetation in ponds and mud and farmyard manure or silage the larvae of this species are not known.

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

Eristalis hirta, the black-footed drone fly, is a common Western North American species of syrphid fly, first officially described by Loew in 1866. Hoverflies get their names from the ability to remain nearly motionless while in flight. The adults are also known as flower flies as they are commonly found on and around flowers, from which they get both energy-giving nectar and protein-rich pollen. The larvae are aquatic filter-feeders of the rat-tailed type.

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

Eristalis brousii, also known as the hourglass drone fly, is a fly species in the Syrphidae family first described by Samuel Wendell Williston in 1882. The species has become largely extinct outside of Northern Canada. Eristalis brousii are part of the hoverfly family, known for hovering above flowers to collect nectar and pollen.

References

  1. ↑ Ball, S.G.; Morris, R.K.A. (2000). Provisional atlas of British hoverflies (Diptera, Syrphidae). Monks Wood, UK: Biological Record Centre. pp. 167 pages. ISBN   1-870393-54-6.
  2. ↑ Morris, Roger K.A. (1999). Hoverflies of Surrey. Surrey Wildlife Trust. p. 244. ISBN   0-9526065-3-4.
  3. ↑ Stubbs, Alan E. & Falk, Steven J. (1983). British Hoverflies: An Illustrated Identification Guide. British Entomological & Natural History Society. p. 253, xvpp.
  4. ↑ Young, Andrew D (2012). A revision of the Nearctic species of Platycheirus Lepeletier and Serville (Diptera: Syrphidae) (master of SCIENCE). University of Guelph. Retrieved 2012-05-09.
  5. ↑ Van Veen, M. (2004). Hoverflies of Northwest Europe: identification keys to the Syrphidae. 256pp. KNNV Publishing, Utrecht.addendum.
  6. ↑ Van der Goot, V.S. (1981). De zweefvliegen van Noordwest - Europa en Europees Rusland, in het bijzonder van de Benelux. KNNV, Uitgave no. 32: 275pp. Amsterdam.
  7. ↑ Bei-Bienko, G.Y. & Steyskal, G.C. (1988). Keys to the Insects of the European Part of the USSR, Volume V: Diptera and Siphonaptera, Part I. Amerind Publishing Co., New Delhi. ISBN   81-205-0080-6.
  8. ↑ Coe, R.L. (1953). "Diptera: Syrphidae". Handbks. Ident. Br. Insects10(1): 1-98. R. Ent. Soc. London. pdf.
  9. ↑ Skevington, Jeffrey H.; Locke, Michelle M.; Young, Andrew D.; Moran, Kevin; et al. (2019). Field Guide to the Flower Flies of Northeastern North America. Princeton Field Guides. Princeton University Press. ISBN   9780691189406.
  10. ↑ Fauna Europaea.
  11. ↑ Peck, L.V. (1988). "Syrphidae". In: Soos, A. & Papp, L. (eds.). Catalogue of Palaearctic Diptera8: 11-230. Akad. Kiado, Budapest.
  12. ↑ Vockeroth, J.R. (1992). The Flower Flies of the Subfamily Syrphinae of Canada, Alaska, and Greenland (Diptera: Syrphidae). Part 18. The Insects and Arachnids of Canada. Ottawa, Ontario: Canadian Government Pub Centre. pp. 1–456. ISBN   0-660-13830-1.
  13. ↑ Speight, M.C.D. (2011). "Species accounts of European Syrphidae (Diptera)" (PDF). Syrph the Net, the database of European Syrphidae. 65: 285pp.
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