New insights into the taxonomy of the Hylaeus xanthostoma complex and further additions to the African Hylaeus fauna (Hymenoptera, Anthophila, Colletidae) Author Dathe, Holger H. https://orcid.org/0000-0001-7150-3850 Senckenberg Deutsches Entomologisches Institut, Eberswalder Strasse 90, 15374 Muencheberg, Germany holger.dathe@senckenberg.de text Contributions to Entomology 2023 2023-07-12 73 1 67 93 http://dx.doi.org/10.3897/contrib.entomol.73.e102655 journal article http://dx.doi.org/10.3897/contrib.entomol.73.e102655 2511-6428-1-67 77E4C4200B0149B8B634CAB943BD7397 1B728092DD735B12BF57D6F6E2E5AA34 Hylaeus (Deranchylaeus) jemeniticus sp. nov. Diagnosis. Females with an orange clypeus were not previously known to me from the Palaearctic. This species apparently has a close connection with geographically neighbouring Ethiopian species (e.g. H. portokalius ). The male is unknown. Description. Female . N = 1. Total length 4.40 mm, wing length 3.00 mm. Head (Fig. 51 ) outline round trapezoidal, HL:HW 0.96, UFW:LFW 1.55; hairy only distally. Scapes long and slender, brown streaked below, flagella short, yellow below, black above. Foveae faciales moderately long. Mask rusty brown: except for lower part of clypeus, mouthparts and lower border of compound eyes also orange. Clypeus CL:CW 1.28, BW:DO 1.31; area shagreen with fine sparse punctation, silky-glossy; sculpture merging into supraclypeal area without border; its apex with median furrow, gradually and broadly merging into frons. Frons flat, but moderately subcontiguously punctate, satiny. Vertex convex, more shallowly and indistinctly punctate, not very shiny. Facial sides evenly convex, with angular paraocular margin. Genae narrow, longitudinally striate-punctate. Malae narrow. Occiput rounded. Labrum and mandibles yellow. Mesosoma (Fig. 57 ) normal, black, ventrally and laterally with short sparse white pubescence. White spots only on tegulae, calli and pronotum black. Pronotum with sharp anterior edges, sides angularly protruded. Mesonotum and scutellum dull, shagreen, with moderately close punctation, omauli rounded. Mesopleura more finely and scattered punctate. Legs entirely black. Wings clear, with stigma, costa and veins black. Propodeum sharp-edged; horizontal part of medial area with a row of meshes, basally with fine, distally with coarse sharp-edged meshes, interspaces shining. Terminal area circular with sharp bar, medial furrow funnel-shaped, smooth, sculptured and dull above. Lateral areae sharply bordered posteriorly and laterally, with short white pinnae. Metasoma (Fig. 63 ) spindle-shaped, black. Tergum 1 shagreen, with minute dense punctation; following terga more finely sculptured, punctation barely visible; depressions not well defined. Without lateral fringes. Terminal fringe pale. Type material. Holotype ♀ (single specimen), YEMEN SW: 20 km S Taizz, 13°30'N , 43°57'E , 1200 m alt., 24.X.2005, J. Halada leg.; coll. OLML. Etymology. Named after the country of origin Yemen (adjectival).