. Diptera Danica : genres et espèces de mouches trouvés jusqu'au Danemark. Diptères. 22 Orthorrhapha brachycères. poils noirs qui sont presque absents sur l'Hind coxae. La pubescence courte sur les jambes est brunâtre à noirâtre, mais la bordure sur la face ventrale de l'Hind fémurs est blanchâtre, que sur les tibias postérieurs brow^nish blanc ; comme d'habitude il y a des poils longs et fins sur les jambes : la colonne vertébrale solide-comme les poils sont noirs. Ailes relativement courte, plus courte. Fig. 8. Aile de D. atrica'piUa. que chez les autres espèces ; elles sont brun noirâtre sur la moitié basale, jaunâtre à l'apex ; nervures brun foncé

• Contributeur: Paul Fearn / Alamy Banque D'Images
• ID de l’image: RCE9WR
• Taille du fichier: 7,2 MB (160,4 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 2621 x 954 px | 22,2 x 8,1 cm | 8,7 x 3,2 inches | 300dpi

Informations supplémentaires

Cette image appartient au domaine public, ce qui signifie que le droit d’auteur a expiré ou que le titulaire du droit d’auteur a renoncé à ses droits. Les frais facturés par Alamy couvrent l’accès à la copie haute résolution de l’image.

Cette image peut avoir des imperfections car il s’agit d’une image historique ou de reportage.

. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. 22 Orthorrhapha brachycera. black hairs which are nearly absent on the hind coxae. The short pubescence on the legs is blackish to brownish, but the fringe on the ventral side of the hind femora is whitish, that on the hind tibiae brow^nish white; as usual there are some long, thin hairs on the legs: the strong spine-like bristles are black. Wings relatively short, shorter. Fig. 8. Wing of D. atrica'piUa. than in the other species; they are blackish brown on the basal half, yellowish at the apex; veins dark brown; the anal cell closed or very narrowly open. Halteres yellow to ferrugineous. Female. This differs somewhat from the male; the eyes in the living specimens are bluish green. The face is whitish or brassy pruinose; the epistomal beard and the hairs on the palpi yellow, the hairs on the occiput brown or blackish brown. Thorax with three more or less distinct hairy stripes, uniting posteriorly and disappearing in the yellowish pubescence of the thorax; praesutural and supraalar bristles yellow; the hairy stripes on the pleura yellow. The pubescense on the abdomen is blackish but the long hairs on the first segment yellow. The hairs on the coxae are greyish and the fringes on the hind legs paler than in the male: the strong bristles on the legs are brownish to yellow. The wdngs are relatively a little longer than in the male, they are paler, of a yellowish colour, somewhat brownish at the base especially towards the anterior margin. — Varieties of the female with paler legs 1 have not seen from Denmark. Length 9 — 11 mm. This species is easily distinguished by its dark legs and the dark, in the male rather short wings; also the somewhat strong legs are characteristic. D. atricapiUa is rather conmion in Denmark: it occurs in the herbage and high grass in fens, meadows and fields, sometimes in great numbers; Damhusmosen, Ordrup Mose, Ermelund, Dyrehaven, Hiller0d, the small wood

Recherche dans la banque de photos par tags

• bookauthorlu
• bookcentury1900
• bookdecade1900
• booksubjectdiptera