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.[1][2]
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4.3–5.9 mm (0.17–0.23 in)
The face is yellow, moderately projecting, with a black median stripe in both sexes. The third antennal joint is sordid reddish below. The eyes are uniformly pilose."
The scutellum entirely black.
Segment 1 is black and well-developed. Segment 2 is black or has a posterior margin that is red. Segments 3 through 5 are usually entirely red-orange to dark red in males. The superior lobe varies in shape and size, with an apex that is nearly truncate to strongly oblique, and with a length from one to two times that of the surstylus.
The wings are hyaline with a brownish grey stigma.
The legs are yellow and light brownish yellow. The basal half of the femora are black. The hind tibia is usually with apical half yellow-orange.
Females cannot be identified.[3]
See references for determination.[4][5][6][7]
Palearctic: Fennoscandia south to Iberia and the Mediterranean basin, Israel and Turkey, Ireland eastward through Central Europe and Southern Europe (Italy, the former Yugoslavia) into European Russia. Nearctic: from the Yukon south to Costa Rica also in parts of the Afrotropical region.[8][9][10]
Habitat: Unimproved grassland, heathland, garrigue, dune grassland, open areas and pathsides in forest up to the Larix/Pinus uncinata zone, fen meadow.[11] Flowers visited include umbellifers, Calluna, Jasione montana, Matricaria, Origanum, Polygonum, Potentilla, Solidago, Stellaria.[12] It flies May to September. The larva feeds on aphids on low herbaceous plants.
As "based on both morphological and molecular evidence", Paragus haemorrhous Meigen 1822, Paragus coadunatus (Rondani, 1847) and Paragus ascoensis Goeldlin de Tiefenau & Lucas, 1981 appear to be synonyms of Paragus tibialis (Fallén, 1817)". Rojo et al (2006).[13]
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.
Het gewoon krieltje (Paragus haemorrhous) is een vliegensoort uit de familie van de zweefvliegen (Syrphidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1822 door Meigen.
Bronnen, noten en/of referenties
Paragus haemorrhous là một loài ruồi trong họ Ruồi giả ong (Syrphidae). Loài này được Meigen mô tả khoa học đầu tiên năm 1822. Paragus haemorrhous phân bố ở vùng Châu Phi[1][2]
Bài viết phân họ ruồi giả ong Syrphinae này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Paragus haemorrhous là một loài ruồi trong họ Ruồi giả ong (Syrphidae). Loài này được Meigen mô tả khoa học đầu tiên năm 1822. Paragus haemorrhous phân bố ở vùng Châu Phi
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