Publication Date:
2024-01-12
Description:
Review of the genus Psilota in the Netherlands (Diptera: Syrphidae)\nA review of the genus Psilota in the Netherlands is presented. It is demonstrated that the genus\nis represented by a complex of two species, Psilota anthracina Meigen, 1822 and P. atra (Fall\xc3\xa9n,\n1817), as already indicated by Kassebeer. Both species can be separated using the key provided\nbelow. The interpretation of the species is exactly opposite to that in recent literature.\nUnfortunately, the holotype of P. atra Fall\xc3\xa9n was lost during transport. Therefore, we designate\na neotype, again a male from Sweden (fig. 6). Our interpretation of the species is based on this\nneotype and the description and pictures of P. anthracina by Meigen.\nThe habitats of both species in the Netherlands differ. Psilota atra is found near pine forest\nwhereas P. anthracina is found near deciduous forest. This seems to agree with the situation in\nthe surrounding countries, as far as we could establish. A key to both species is provided and the\nmale genitalia are illustrated.\nKey to the Dutch species\n1 Hind femur strongly thickened, about twice as broad as the mid femur. Female: posterior\n(convex) part of mesanepisternite with white hairs, abdomen predominantly lighthaired,\nthe 2nd tergite with conspicuous long white hairs in the frontal corners, 3rd tergite\npredominantly\nlight-haired; 3rd antennal segment about 2 times longer than high.\nMale: genitalia: epandrium distinctly elongated (fig. 4). . . . . . . . . . . . . Psilota atra\n- Hind femur only slightly thickened, at most 1.5 times as broad as the mid femur. Female:\nposterior (convex) part of mesanepisternite black-haired, abdomen more black haired,\nthe 2nd tergite without conspicuous long white hairs in the frontal corners, 3rd tergite\npredominantly\nblack-haired; 3rd antennal segment about 1.5 times longer than high.\nMale: genitalia: epandrium not elongated (fig. 5). . . . . . . . . . . . Psilota anthracina
Keywords:
Verspreiding
;
Nederland
;
Herkenning
;
Determinatiesleutel
;
Taxonomie
;
Biotopen
Repository Name:
National Museum of Natural History, Netherlands
Type:
info:eu-repo/semantics/article
Format:
application/pdf
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