. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. 234 Orthorrhapha brachycera. H. stigmatica seems like the preceding to be somewhat rare in Denmark, and has hitherto only been taken in Jutland; Holstebro (H. J. Hansen), at Hald near Viborg (the author), at Hobro (Jacob- sen) and Tinbsek Molle at Lindenborg Aa (J. P. Kryger); it has been taken from ^^/e to August. It occurs on quite the same localities as the preceding and together with this and the following. Geographical distribution:— Europe down into Spain; its northern limit lies in Denmark (see below). Rem


. Diptera Danica: genera and species of flies hitherto found in Denmark. Diptera. 234 Orthorrhapha brachycera. H. stigmatica seems like the preceding to be somewhat rare in Denmark, and has hitherto only been taken in Jutland; Holstebro (H. J. Hansen), at Hald near Viborg (the author), at Hobro (Jacob- sen) and Tinbsek Molle at Lindenborg Aa (J. P. Kryger); it has been taken from ^^/e to August. It occurs on quite the same localities as the preceding and together with this and the following. Geographical distribution:— Europe down into Spain; its northern limit lies in Denmark (see below). Remarks: The above two species are certain and distinct, but the earlier descriptions, which were for the greatest part based on the colours, are often misleading. Loew, as is well known, took the two species together with the following as varieties, or more correctly, as stages of maturity of one species. Schiner's discription of stigma- tica is also incorrect, I have in the synonymy followed the Kat. pa- laarkt. Dipt., but I think it otherwise possible, that Zetterstedt's monostigma is identical with the present species, wiiich also was the opinion of Schiner, and Loew (1. c. 241) says the same. If so the present species goes towards the north to middle Sweden. Whether Meigen's ijrecatoria and monodigma belong to j^recatoria or stig- matica is, I think, not possible to decide after his descriptions; what he says about the colour points towards stigmatica. 3. H. melanocephala Hal. 1833. Hal. Entom. Mag. I, 158. - 1882. Mik, Wien. ent. Zeitg. I, 41, Tab. I. Fig. 16—18. — 1903. , 268. — Hemerodromia flavella: 1838. Zett. Ins, Lapp. 543, 4 et 1842. Dipt Scand. I, 256, 6.— 1862. Schin, F. A. I, 83. Male. This species resembles stigmatica very much. Frons brown- ish yellow. Antennae yellow, arista short. Thorax yellow, somewhat greyish pruinose, with two indistinct brownish stripes, and in the middle a lighter, somewhat yellowish stripe. Abdomen brownish,


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