. British journal of entomology and natural history. Natural history; Entomology. BR. J. ENT. NAT. HIST., 4: 1991 151 S. costata (van der Wulp), S. fuscipalpis Edw. and S. flavipuncta Edw. are proving to be widespread, while tenuis Edw. is apparently scarce (two new records: Norfolk, Thompson Common, by pingos, , PJC; Oxon, Spartum Fen, malaise trap, , K. Porter). No new records have become available of concolor Winnertz or humerella Edw. Sceptonia cryptocauda sp. n. Male. Head shining black. Antennae brown with basal segments yellow, about subequal to fore tarsus in
. British journal of entomology and natural history. Natural history; Entomology. BR. J. ENT. NAT. HIST., 4: 1991 151 S. costata (van der Wulp), S. fuscipalpis Edw. and S. flavipuncta Edw. are proving to be widespread, while tenuis Edw. is apparently scarce (two new records: Norfolk, Thompson Common, by pingos, , PJC; Oxon, Spartum Fen, malaise trap, , K. Porter). No new records have become available of concolor Winnertz or humerella Edw. Sceptonia cryptocauda sp. n. Male. Head shining black. Antennae brown with basal segments yellow, about subequal to fore tarsus in length. Median flagellar segments nearly twice as long as broad. Thorax shining black except narrow posthumeral angle. Legs yellow except hind coxa narrowly black at base (up to basal third in Thompson Common and some Leckford examples) and hind femur black on about apical half (a little more in Thompson Common example). Mid tibia with 2 a, 3 d, 1 fine p-v. Hind tibia with 6 a (4th and 5th shorter) and 3 strong d. Abdomen mainly shining black but tergites 1-3 more or less broadly yellow at side margins, this colour extended dorsally along sutures as triangular markings; genitalia yellow (Figures 24-26). Wings yellowish with all veins yellow, R5 little more than its width removed from R, where these veins run parallel; r-m and basal part of M, slightly suffused brownish; C, R, and R5 bristled, other veins bare. Halteres yellow. Wing length mm. Female. Very similar in most respects. Antenna shorter than fore tarsus, median flagellar segments about times as long as broad. Markings on tergites 1-3 as male; apical margin of tergite 6 and ovipositor yellow. Wing mm. Holotype male: Ireland, Roscommon, Lough Key Forest Park, 1977 (P. J. Chandler). Paratype males: 1 with same data as holotype; Glos., Ashwell Grove, 1972; Wilts., Savernake Forest, ; Somerset, Murder Combe,. Figs 24-26. Male genitalia of Sceptonia cryptocauda sp. n.: 24, ventral v
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