Chrysogaster antitheus

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Chrysogaster antitheus
Chrysogaster antitheus male.png
male
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Diptera
Family: Syrphidae
Subfamily: Eristalinae
Tribe: Brachyopini
Subtribe: Brachyopina
Genus: Chrysogaster
Species:
C. antitheus
Binomial name
Chrysogaster antitheus
Walker, 1849 [1]
Synonyms

Chrysogaster antitheus (Walker, 1849), the Short-haired Wrinkle Fly, is a fairly common species of syrphid fly found in North America. 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 in this genus are aquatic rat-tailed larvae. [8]

Contents

Description

For terminology see Speight key to genera and glossary

Size

7–8 mm (0.28–0.31 in)

Head

The head is completely shiny, except for a strip across the face beneath the antennae. Sometimes, the head is a deep cobalt blue. The frontal triangle is large and swollen, with a longitudinal depression. The frons of the female, is broad and long, is heavily wrinkled on the sides, with a narrow smooth area in the middle. When viewed from the side, the face has a gently concave shape and is noticeably bumpy below the center. The epistoma, the area between the frons and the mouth, is not prominent. The antennae are very small, with the first two segments being short and reddish yellow, and the third segment being round or slightly oval, also reddish yellow with a darker upper edge. In females, the third segment of the antennae is much larger than in males. The eyes are a single color, and they are holoptic. [9]

Thorax

The dorsum of thorax is opaque black, sometimes deep cobalt blue, with numerous small, greenish, more shining spots, which on the sides be come confluent, forming stripes.

Wings

The wings extend well beyond the abdomen. The wings are a little blackish, more nearly hyaline near the base and posterior part and more or less clouded on the outer part, especially in the end of the marginal, sub-marginal, and first posterior cells. (r1,r2_3 and r4+5) ; The stigma is dilutely brownish. the last section of the fourth vein (M1) very oblique, a little convex outward near the angle, and then more broadly concave, the tip joining the third vein ( R4+5) in a right angle. Vein M2 is prominant as a spur off of M1. The wings may almost wholly lack the blackish clouds. The last section of R4+5+M longer than crossvein h and usually longer than crossvein r-m The crossvein r-m is located before the middle of the discal cell.

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LEGS

The legs are wholly greenish black

ABDOMEN
The disk of abdomen is dark opaque black, with brassy green margins. Dorsum of abdomen subopaque, the sides bright steel blue. [6]

Distribution

Canada, United States.

Related Research Articles

<i>Chrysotoxum</i> Genus of flies

The genus Chrysotoxum consists of large, wasp-mimicking species. The adults are distinguished by very long antennae, oval abdomen with yellow stripes, and yellow patterns on the thoracic pleurae . The species of Chrysotoxum are chiefly Holarctic in distribution. . The species in this genus, are mostly very uniform in structure and colour and are separated with difficulty. Larvae are specialized in preying upon root aphids associated with ant nests.

<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>Nemotelus nigrinus</i> Species of fly

Nemotelus nigrinus, the all-black snout, is a Holarctic species of soldier fly.

Dipteran morphology differs in some significant ways from the broader morphology of insects. The Diptera is a very large and diverse order of mostly small to medium-sized insects. They have prominent compound eyes on a mobile head, and one pair of functional, membraneous wings, which are attached to a complex mesothorax. The second pair of wings, on the metathorax, are reduced to halteres. The order's fundamental peculiarity is its remarkable specialization in terms of wing shape and the morpho-anatomical adaptation of the thorax – features which lend particular agility to its flying forms. The filiform, stylate or aristate antennae correlate with the Nematocera, Brachycera and Cyclorrhapha taxa respectively. It displays substantial morphological uniformity in lower taxa, especially at the level of genus or species. The configuration of integumental bristles is of fundamental importance in their taxonomy, as is wing venation. It displays a complete metamorphosis, or holometabolous development. The larvae are legless, and have head capsules with mandibulate mouthparts in the Nematocera. The larvae of "higher flies" (Brachycera) are however headless and wormlike, and display only three instars. Pupae are obtect in the Nematocera, or coarcate in Brachycera.

<i>Brachyopa flavescens</i> Species of fly

Brachyopa flavescens, The Yellow Sapeater, is a fairly common species of syrphid fly. It has been observed in northeastern North America. 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. Larvae for this genus are of the rat-tailed type. B.flavescens larvae have not been described.

Blera nigra , the Golden Haired Wood Fly, is a fairly common species of syrphid fly first officially described by Williston in 1887 Hoverflies get their 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 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.

Orthonevra flukei (Sedman, 1966), Fluke's Mucksucker, is an uncommon species of syrphid fly It has been observed in the Western United States. 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. Larvae for this genus are of the rat-tailed type. O. flukei larvae have been described.

<i>Orthonevra pictipennis</i> Species of fly

Orthonevra pictipennis (Loew,1863), the Dusky-veined Mucksucker, is an uncommon species of syrphid fly. It has been observed in North America. O. pictipennis shares much of the same range as O. pulchella, O. nitida and O. feei. 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. Larvae for this genus are of the rat-tailed type. O. pictipennis larvae have not been described.

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

Helophilus lapponicus, the Yellow-margined Marsh Fly, is a common species of syrphid fly observed across northern North America, northern Europe, Greenland and Siberia. 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. Though common the larvae of this species are not known but the larvae of other species in this genus are associated with wet decaying organic material, particularly accumulations of decaying vegetation in ponds and mud and are a so called rat-tailed type.

Microdon tristis is a species of syrphid fly in the family Syrphidae.

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

Arctosyrphus willingii, the northern longbeak, is a species of rat-tail maggot fly in the family Syrphidae. This species was formerly a member of the genus Lejops.

Hadromyia aepalius, the Sterling Quicksilver, is a rare species of syrphid fly found in eastern North America. 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.

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

Blera pictipes, the Painted Wood Fly, is a rare species of syrphid fly first officially described by Bigot in 1883. 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>Brachyopa daeckei</i> Species of fly

Brachyopa daeckei, the black-tailed sapeater, is a rare species of syrphid fly that has been observed in northeastern North America. 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. Larvae for this genus are of the rat-tailed type. B.daeckei larvae have not been described.

<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>Blera scitula</i> Species of fly

Blera scitula, the Western Wood Fly, is an uncommon species of syrphid fly first officially described by Williston in 1882. 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 the flowers from which they get both energy-giving nectar and protein-rich pollen. The larvae of Blera are of the rat-tailed type, feeding on exuding sap or in the rot holes of trees.

<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.

Neoascia globosa , the Black-margined Fen , is a fairly common species of syrphid fly observed in northeastern North America. 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 aquatic.

<i>Brachyopa caesariata</i> Species of fly

Brachyopa caesariata, the Plain-winged Sapeater, is an uncommon species of syrphid fly. It has been observed in Canada, Alaska and northern United States. 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. Larvae for this genus are of the rat-tailed type. B.caesariata larvae have not been described.

<i>Brachyopa diversa</i> Species of fly

Brachyopa diversa , the Pale-striped Sapeater, is a rare species of syrphid fly. It has been observed in the northeastern part of North America. 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. Larvae for this genus are of the rat-tailed type. B.diversa larvae have not been described.

References

  1. ↑ Walker, F. (1849). List of the specimens of dipterous insects in the collection of the British Museum. Part III. London: British Museum (Natural History). pp. 485–687.
  2. ↑ Shannon, R.C. (1916). "Appendix. Systematic and synonymic notes. Pp. 195-203. In Banks, N., Greene, C. T., McAtee, W. L. & Shannon, R. C., District of Columbia Diptera: Syrphidae". Proceedings of the Biological Society of Washington. 29: 173–203. Retrieved 14 November 2021.
  3. ↑ Loew, Hermann (1866). "Diptera Americae septentrionalis indigena". Centuria Septima. Berl. Ent. Z. 10: 1–54.
  4. ↑ Curran, Charles Howard (1925). "Contribution to a monograph of the American Syrphidae north of Mexico". The Kansas University Science Bulletin. 15: 7–216. Retrieved 11 November 2021.
  5. ↑ Harris, T.W. (1835). Insects. Pp. 553-602. In Hitchcock, E., Report on the geology, mineralogy, botany, and zoology of Massachusetts. 2nd Edition. Amherst: J. S. & C. Adams. pp. [4] + 702 pp., 19 pls, 3 maps.
  6. 1 2 Shannon, Raymond Corbett (1916). "Notes on some genera of Syrphidae with descriptions of new species". Proceedings of the Entomological Society of Washington. 18: 101–113. Retrieved 21 July 2021.
  7. ↑ Loew, H. (1870). "Diptera Americae septentrionalis indigena. Centuria nona". Berliner Entomologische Zeitschrift. 13(1869): 129–186. Retrieved 14 November 2021.
  8. ↑ Skevington, J.H.; Locke, M.M.; Young, A.D.; Moran, K.; Crins, W.J.; Marshall, S.A (2019). Field Guide to the Flower Flies of Northeastern North America. Princeton Field Guides (First ed.). Princeton, New Jersey: Princeton University Press. p. 512. ISBN   9780691189406.
  9. ↑ Williston, S.W. (1887). "Synopsis of the North American Syrphidae". Bulletin of the United States National Museum. 31: 1–335.PD-icon.svg This article incorporates text from this source, which is in the public domain .


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