Image d'archive à partir de la page 31 de genres et espèces de diptères Danica Danica Diptères : genres et espèces de mouches au Danemark jusqu'dipteradanicage01lund Année : 1907 22 Orthorrhapha brachycères. La veine discale, brunâtre, dans la moitié apicale jaunâtre ; stigmate jaune clair, tout occupant l'espace entre costa et la veine radiale, la veine cubitale une fourche à l'apex. Des haltères brun noirâtre, pédoncule un peu plus pâles. Des femmes. Le annulated antennes jaune, plus complexe que dans le mâle. Modérément avant large, qui n'occupent un tiers de la Fig. 6. Aile de P. tarsalis. largeur de la tête

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Archive image from page 31 of Diptera Danica genera and species Diptera Danica: genera and species of flies hitherto found in Denmark dipteradanicage01lund Year: 1907 22 Orthorrhapha brachycera. the discal vein, brownish, in the apical half yellowish; stigma light yellow, just occupying the space between costa and the radial vein, the cubital vein forked at the apex. Halteres blackish brown, peduncle a little paler. Female. Antennae yellow, the annulated complex larger than in the male. Front moderately broad, not occupying one third of the Fig. 6. Wing of P. tarsalis. breadth of the head, shining black with a median longitudinal ridge; two silvergrey spots above the antennae. Lenght 3, 5—4, 5 mm. The larva is brownish or greyish brown with two more or less indistinct, lighter, longitudinal lines on the dorsal and ventral surfaces, these lines being more conspicuous in the pupae: the length of the larva is abt. 8 mm. P. tarsalis seems also rather rare here, and it has only been bred; Gharlottenlund, Dyrehaven and on Lolland at Maribo (W. SchUck). The larva was taken under bark and in decaying wood of beeches, oaks and apple-trees; it was taken from the beginning of June to the middle of July, and the imagines developed in the same months. Jaennicke (Berl. Ent. Zeitschr. 1866, X, 220) refers it to have been bred from beech {rohustus Jaennicke = tarsalis Zett.) Geographical distribution: — Northern and middle Europe, in north to southern Sweden and in south to middle Germanv. Of the genus Pachygaster there is thus hitherto known two species from Denmark. There is some reason to think that also P. atra Panz., Leachii Curt, and perhaps also meromelas Duf. may be found, as they occur both north and south of Denmark and also are found in Britain. They will be easily distinguished from the two species described. P. atra has the wings fumigated on the basal half, but the male has black antennae, and both sexes want the silvergrey spots above the antennae; P. Leachii

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