Orthonevra nitida

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Orthonevra nitida
Orthonevra nitida P1410798a.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Diptera
Family: Syrphidae
Genus: Orthonevra
Species:
O. nitida
Binomial name
Orthonevra nitida
(Weidemann, 1830)
Orthonevra nitida map 2023.png
Distribution as of 2023
Synonyms [1]
  • Chrysogaster nitidus Wiedemann, 1830
  • Cryptineura hieroglyphica Bigot, 1859

Orthonevra nitida , the wavy mucksucker, is a fairly common species of syrphid fly. It has been observed in Eastern and Central 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. O. nitida larvae have not been described. [1] [2] [3] [4]

Contents

Description

For terminology see Speight key to genera and glossary

Size
4–5 mm (0.16–0.20 in)
Head

The head is brassy metallic black and covered with scale-like pile. The front in female narrow above, strongly transversely rugose, with a median furrowed longitudinal line. The frontal triangle (male) is rugose. The face is rugose, concave on the lower part. The epistoma is but slightly produced. There is a small silvery spot on each side of the face near the eye above. The antennae are longer than the face with the scape and pedicel are yellowish red or brownish, the flagellum is black and only a little longer than the pedicel. The eyes with a median straight horizontal line and two prominent recurving vertical brown lines. The eyes of the male are Holoptic

Thorax

The scutum is metallic green, finely roughened, with four longitudinal stripes of a coppery or metallic purple color, in some reflections brown. The outer stripes are more or less divided into two nearly contiguous ones. The scutellum is more distinctly roughened, or lightly rugose and grooved before the apex.

Wings

The wings are almost transparent, with thin blackish spots on the outer cells. The stigma is a light brown color. There is a narrow brown cloud that starts from the tip of the second vein (R2+3) and extends across the submarginal cell. The cross veins are narrowly clouded with brown. The veins at the outer part of the discal and first posterior cells are rectangular, almost straight, slightly angled in the middle. The fourth vein (M) terminates noticeably beyond the tip of the second vein. The M1 vein is perpendicular to the R4+5 vein. The M2 vein divides the M1 vein into two equal parts. The dm-cu vein is curved inward, and the CuA1 vein extends as a spur on the posterior corner of the discal cell. The crossvein r-m is located at the basal one-third of the discal cell.

Legs

The legs are metallic black with the joints, the base of tibiae and their tip, and the first two joints of tarsi, reddish yellow.

Abdomen

The abdomen has a deep metallic green color. It appears roughened and lacks shine on the central area, but is noticeably shiny on the edges and tip. The second and third segments of the abdomen have somewhat noticeable bands of a less translucent color in front and behind. [4] [5]

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References

  1. 1 2 "Orthonevra nitida Report". Integrated Taxonomic Information System. Retrieved 2019-09-23.
  2. ↑ "Orthonevra nitida". GBIF. Retrieved 2019-09-23.
  3. 1 2 Sedman, Yale S (1964). "The Chrysogaster (Orthonevra) Bellula Group In North America". Proceedings of the Entomological Society of Washington. 66: 169–201.
  4. ↑ 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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