DOI: 10.3897/contrib.entomol.76.e155589

Authors: Holger H. Dathe, Shuichi Ikudome, Volker Haeseler, Jagdish Saini

Abstract: This study provides an overview of the species of Hylaeus (Paraprosopis), in the Palaearctic region and adjacent areas. A total of 37 species are identified, each of which is presented with a morphological diagnosis and comparative description, and illustrations of the faces of both sexes and the main features of the male terminalia. In addition, information on the distribution is given. Identification keys for specific geographic areas are provided for the species. A more detailed study in the Canary Islands revealed three new species, Hylaeus (Paraprosopis) gomerensis Haeseler, sp. nov., H. (Paraprosopis) hierro Haeseler, sp. nov., and H. (Paraprosopis) palmensis Haeseler, sp. nov. Two known species are excluded from the subgenus Paraprosopis: Hylaeus omanicus Dathe, 1995 – now placed in subgenus Prosopis, comb. nov.; Hylaeus krombeini Snelling, 1980 from Sri Lanka is provisionally placed as subgenus incertus.

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DOI: 10.3897/contrib.entomol.73.e102655

Authors: Holger H. Dathe

Abstract: 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 subgenus Pumilaeus 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 subgenus Deranchylaeus is presented, to include the new species.

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DOI: 10.3897/contrib.entomol.72.e87230

Authors: Holger H. Dathe

Abstract: The Hylaeus brevicornis group of the subgenus Dentigera is defined and revised. A total of 22 species are included in the group, their circumscription and identification using morphological characters is described and discussed, and their distribution is studied. Three species from Lebanon and Nepal are described as new to science. The hitherto unknown females of Hylaeus (Dentigera) alievi Dathe & Proshchalykin, 2021 and Hylaeus (Dentigera) biarmicus (Warncke, 1992) are described for the first time. An integrative revision of the group involving gene sequencing is being prepared.

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