. Fig. 51. Wing of H. discoidalis. Female. Similar to the male; front metatarsi simple, not qulte half as long as tibiæ, and shorter than the four following joints; hind tibiæ evenly but considerably thickened in somewhat more than the apical half; they are not compressed but very slightly curved. Length 2,8 to fully 3,5 mm. This species is distinguished from comicula by the very short, quite quadriserial acrostichal bristles, and from coracula by the same character and the hyaline wings; it resembles dypeata by the short thoracic bristles, but the latter species has biserial acrostichal brist
. Fig. 51. Wing of H. discoidalis. Female. Similar to the male; front metatarsi simple, not qulte half as long as tibiæ, and shorter than the four following joints; hind tibiæ evenly but considerably thickened in somewhat more than the apical half; they are not compressed but very slightly curved. Length 2,8 to fully 3,5 mm. This species is distinguished from comicula by the very short, quite quadriserial acrostichal bristles, and from coracula by the same character and the hyaline wings; it resembles dypeata by the short thoracic bristles, but the latter species has biserial acrostichal bristles; the most distinguishing character is the length of the discai cell, this being longer than in any other species known to me, except minuta. H. discoidalis seems very rare in Denmark; it was first taken in this year (1910), and only three specimens, a male and two females, on a humid meadow at Hald near V^iborg in Jutland, on 2\/fi and ^^/e (the author). Geographical distribution: — The species is only known from Denmark.
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Photo credit: © The Bookworm Collection / Alamy / Afripics
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
