Cerioidini

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Cerioidini
Hoverfly August 2007-1.jpg
Ceriana vespiformes
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Diptera
Family: Syrphidae
Subfamily: Eristalinae
Tribe: Cerioidini
Wahlgren, 1909
Genera

Cerioidini is a widespread tribe of around 222 species of hoverfly. [1] Cerioidini are mistaken for wasps for which they are effective mimic. Cerioidini have antennae with a terminal style and have somewhat elongate and basally constricted abdomens, only slightly in Ceriana , but pronounced in most Sphiximorpha ; and Polybiomyia , and extremely in Monoceromyia . [2] Larvae live mostly within tree sap associated with tree wounds or putrefying pockets of water in tree cavities. [3]

Contents

Description

This family is distinguished by anatomy and coloration that has evolved to be wasp mimics. The antennae are long and thin with a terminal arista (see gallery) suggestive of wasp antennae that are also long. The arista of the antennae is terminal. The elongate antennae has arisen independently in other genera such as Mocrodon although in that genera the arista is not terminal. The flagellum is always elongate while the scape and pedicel are elongated in different ratios that are helpful in distinguishing the various genera. an elongation of the front, the frontal prominence adds to the elongation of the antennae but is reduced or inconspicuous in some genera (see table below)The face is elongated with coloring that sometimes has the appearance of the wasp mandibles. These flies have no mandibles. The abdomen is elongated often constricted in the first and/or second segments (see table below). The anterior half of the wing is commonly darkly colored while the posterior half is usually clear. The effect is the appearance of a dark forewing and a clear hind wing, as in wasps. When captured, the fly also has some behavioural mimicry, such as a stinging motion of the abdomen. These flies have no actual stinger. The overall coloration is very wasp-like, often black with yellow rings on the abdomen and strong markings on the thorax and face. Wing venation characteristics are of taxonomic value. The cross-vein r-m is at or beyond the middle of the discal cell. Cells r1 and r2+3 are open, while cell r4+5 is closed near the margin of the wing. Vein R4+5 can be straight, looping with or without a spur vein. [4] [5] [6]

Genera characteristics

Genera of Cerioidini [6] [5]
Genusfrontal prominenceabdominal segment 1abdominal segment two constrictionabdominal segment 2 lengthparafaceother
Ceriana as long as scapesame size as segment 2not constrictedwider than longvery short parafacelooping in third vein R4+5 with spur branch projecting into cell r4+5
Monoceromyia as long as scapewider than segment 2strongly constrictedlonger than wideloop of vein R4+5 without Spur branch
Polybiomyia absent or very shortshorter than segment 2strongly constrictedlonger than widevein R4+5 not looping
Primocerioides shorter than scapenot constrictedwider than longlong paraface and large anterior tentorial piteyes and face pilose, vein R4+5 straight
Sphiximorpha shorter than scapewider than 2slightly constricted anteriomediallylonger than widelong paraface and large or deep anterior tentorial pit.Facial tubercle weak to nearly absent. vein R4+5 not looping.

Related Research Articles

<span class="mw-page-title-main">Conopidae</span> Family of flies

The Conopidae, usually known as the thick-headed flies, are a family of flies within the Brachycera suborder of Diptera, and the sole member of the superfamily Conopoidea. Flies of the family Conopidae are distributed worldwide in all the biogeographic realms except for the poles and many of the Pacific islands. About 800 species in 47 genera are described worldwide, about 70 of which are found in North America. The majority of conopids are black and yellow, or black and white, and often strikingly resemble wasps, bees, or flies of the family Syrphidae, themselves notable bee mimics. A conopid is most frequently found at flowers, feeding on nectar with its proboscis, which is often long.

<span class="mw-page-title-main">Agromyzidae</span> Family of flies

The Agromyzidae are a family commonly referred to as the leaf-miner flies, for the feeding habits of their larvae, most of which are leaf miners on various plants.

<i>Spilomyia sayi</i> Species of fly

Spilomyia sayi, the Four-lined Hornet Fly, is a fairly common species of syrphid fly. This species is found from western Canada to 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. The larvae are known as the short-tailed larvae, suited for moist areas such as rot holes of trees. It is a wasp mimic.

<i>Ceriana</i> (fly) Genus of flies

Ceriana is a genus of hoverfly. All species are wasp mimics.

<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.

Hammerschmidtia is a Holarctic genus of hoverflies whose larvae live in sap under the bark of freshly fallen trees.

<span class="mw-page-title-main">Eristalini</span> Tribe of overflies

Eristalini is a tribe of hoverflies. Several species are well-known honeybee mimics, such as the drone fly Eristalis tenax, while other genera such as Helophilus and Parhelophilus exhibit wasp-like patterns of yellow and black stripes, both strategies to avoid predation by visual predators such as birds.

<i>Polybiomyia</i> Genus of flies

Polybiomyia is a genus of hoverfly.

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>Chrysotoxum pubescens</i> Species of fly

Chrysotoxum pubescens the Yellow-throated Meadow Fly is a North American species of syrphid fly in the family Syrphidae.The adults are strong mimics of wasps. Larvae of this species has been described.

<i>Spilomyia longicornis</i> Species of fly

Spilomyia longicornis is a species of syrphid fly, also known as a flower fly or hoverfly, in the family Syrphidae. Although the appearance of S. longicornis is remarkably similar to a vespid wasp, it is a fly and cannot sting. It occurs in North America, east of the Rocky Mountains.

<i>Chrysogaster antitheus</i> Species of fly

Chrysogaster antitheus , 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.

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

Blera badia, the Common Wood Fly, is a common species of syrphid fly first officially described by Walker in 1849. 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 umbratilis</i> Species of fly

Blera umbratilis, the Hairy Wood Fly, is an uncommon species of syrphid fly 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 nectar and protein-rich pollen. The larvae are of the rat-tailed type, feeding on exuding sap or in the rot holes of trees.

Chrysotoxum perplexum is a North American species of syrphid fly in the family Syrphidae.The adults are strong mimics of wasps. Larvae of this genera, when known, are aphid predators.

<i>Sericomyia bifasciata</i> Species of fly


Sericomyia bifasciata, the Long-nosed Pond Fly, is an uncommon species of syrphid fly. They have been observed from 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. The larvae in the genus Sericomyia are known as the rat-tailed with a long breathing tube taylored for aquatic environments. The larvae for this species are unknown.

<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.

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 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 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.

References

  1. Ricarte, A., Marcos-garcía, M. A., Rotheray, G. E. & Hancock, E. G. (2007). The Early Stages and Breeding Sites of 10 Cerioidini Flies (Diptera: Syrphidae). Annals of the Entomological Society of America 100(6):914-924 doi : 10.1603/0013-8746(2007)100[914:TESABS 2.0.CO;2]
  2. Vockeroth, J.R. (1987). Manual of Nearctic Diptera, Volume 2 (PDF). Canada: Research Branch, Agriculture Canada. p. 668. ISBN   0-660-12125-5.
  3. Heiss, Elizabeth Madeleine (1938). "A classification of the larvae and puparia of the Syrphidae of Illinois exclusive of aquatic forms". Series: Illinois Biological Monographs. 16: 1–142. end of template cite journal
  4. Ferguson, E. W. (1926). "Revision of Australian Syrphidae (Diptera). Part i." (PDF). Proceedings of the Linnean Society of New South Wales. 51: 137–183.
  5. 1 2 Brunetti, Enrico (1923). Diptera Vol. III. Pipunculidae, Syrphidae, Conopidae, Oestridae. Vol. 3. London, England: Taylor and Francis. pp. 1–424.
  6. 1 2 Shannon, Raymond (1927). "Notes on and descriptions of Syrphid flies of the subfamily Cerioidinae". Journal of the Washington Academy of Sciences. 17: 38–53.