The Prosoeca peringueyi (Diptera: Nemestrinidae) pollination guild in southern Africa: long-tongued flies and their tubular flowers Abstract | Materials and Methods | Results | Discussion | Literature Table 3 Floral characteristics of species with the Lapeirousia silenoides-type flower. The floral tube is closed in the lower 10-12 mm in B. curviscapa, 20-30 mm in B. dregei, and 15-20 mm in B. framesii, hence floral tube length does not reflect the distance that an insect must extend its mouthparts to reach the nectar. Z= zygomorphic; A= actinomorphic. Family/species Symmetry Scent Tube length (mm) Flowering time Geraniaceae Pelargonium cortusifolium Z 0 ca. 30 Mar.-Nov. P. crassicaule Z 0 15-25 (Mar.-)Aug.-Sept.(-Oct.) P. echinatum Z 0 25-55 (July-)Aug.-Oct. P. incrassatum Z 0 30-40 Aug.-Sept. P. magenteum Z 0 33-47 (June-)July-Sept. P. sericifolium Z 0 35-60 (July-)Aug.-Sept. Iridaceae Babiana curviscapa Z 0 36-48 Aug.-Sept. B. dregei Z 0 50-65 Aug.-Sept. B. ecklonii Z 0 40-50 Sept. B. flabellifolia Z 0 40-65 Aug.-Sept. B. framesii Z 1 60-70 Aug.-Sept. B. geniculata Z 0 35-45 Aug. B. pubescens Z 0 ca. 50 (July-)Aug. B. sambucina var. longibracteata Z 1 30-50 Aug.-Sept. B. sambucina var. unguiculata Z 1 38-55 Aug.-Sept. Geissorhiza kamiesmontana Z 0 18-25 Sept. Hesperantha latifolia A 0 15-25 Aug.-Sept. H. oligantha A 0 30-36 Sept.(-Oct.) H. purpurea A 0 ca. 20 Sept. Lapeirousia dolomitica subsp. dolomitica Z 1 25-45 (June-)July-Sept. L. dolomitica subsp. lewisiana Z 0 45-55 July-Aug. L. jacquinii Z 0 30-40 July-Sept. L. oreogena A 0 50-60 Aug.(-Sept.) L. pyramidalis subsp. regalis Z 0 40-50 July-Aug. L. silenoides Z 0 40-55 July-Sept. L. violacea Z 0 35-40 Aug.-Sept. Romulea hantamensis A 0 50-70 Aug.-Sept. Sparaxis variegata subsp. metelerkampiae Z 0 34-37 Aug.-Sept. Tritonia marlothii Z 0 25-44 Aug.-Sept. Xenoscapa uliginosa Z 0 25-30 Sept.(-Oct.) TOP