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Within the genus   Hylaeus   subgenus   Deranchylaeus  , from sub-Saharan Africa, a distinctive new subgroup of species is established. The females of this subgroup share a striking character: the orange-coloured lower face, previously known only in    H.   xanthostoma   . The inter-specific differences are cryptic in both sexes. Seven species are newly described:   Hylaeus  ( Deranchylaeus )  aurantiacus   sp. nov.  ♀♂,   H.  ( D. )  burundis   sp. nov.  ♂,   H.  ( D. )  lyriformis   sp. nov.  ♂,   H.  ( D. )  sambiensis   sp. nov.  ♂,   H.  ( D. )  portokalius   sp. nov.  ♂♀,   H.  ( D. )  diastictus   sp. nov.  ♂ and   H.  ( D. )  jemeniticus   sp. nov.  ♀. This subgroup also includes   H.  ( D. )  promontorii   (Meade-Waldo, 1923) and   H.  ( D. )  venustus   Dathe, 2014, whose females are described for the first time. From Cameroon, the male of a second species of the subgenusPumilaeus   is described as new:   H.  ( Pumilaeus )  soukontouai   sp. nov.  New records of species of the genus    Hylaeus    F. in sub-Saharan Africa are added and a revised identification key to the subgenusDeranchylaeus   is presented, to include the new species.

contributions to entomology

﻿New insights into the taxonomy of the    Hylaeus   xanthostoma    complex and further additions to the African    Hylaeus    fauna (  Hymenoptera  ,   Anthophila  ,   Colletidae  )

﻿New insights into the taxonomy of the Hylaeus xanthostoma complex and further additions to the African Hylaeus fauna ( Hymenoptera , Anthophila , Colletidae )

New insights into the taxonomy of the Hylaeus xanthostoma complex and further additions to the African Hylaeus fauna ( Hymenoptera , Anthophila , Colletidae )