Sierola tenuifemur Magnacca, 2026, sp. nov.
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2026
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| author | Magnacca, Karl |
| author_facet | Magnacca, Karl |
| contents | <p><b><i>Sierola tenuifemur</i> sp. nov.</b></p><p>urn:lsid:zoobank.org:act: 2BDA9A9E-9ABF-4C5D-BB0A-0CADBB32B6FF</p><p>Figs 183, 191</p><p><b>Diagnosis</b></p><p>Part of a complex of species with the head compressed and weakly convex dorsally and ventrally, frons broad, mandible pale and distinctly concave ventrally, and lateral ocelli separated from the vertex crest. Distinguished from similar species by the extremely narrow profemur, the most extreme seen in the genus so far. The antenna is also elongate, A3 L/W ≥1.5.</p><p><b>Etymology</b></p><p>From the Latin ‘ <i>tenuis</i> ’, ‘thin’, + ‘ <i>femur</i> ’, ‘thigh’, referring to the extremely narrow profemur, the proportionally narrowest known in the genus. It is a noun in apposition.</p><p><b>Type material</b></p><p><b>Holotype</b></p><p>AUSTRALIA – <b>Queensland</b> • ♀; Acacia Ridge, Brisbane; Oct. 1976; E.C. Dahms leg.; Malaise trap; QM T262175.</p><p><b>Description</b></p><p><b>Female</b></p><p>HEAD. Clypeal process semi-elliptical, apex rounded; dorsally with a low carina, distinctly visible only when viewed directly down towards mandibles; in profile evenly sloping, nearly straight. Mandible moderately broad, distinctly narrowed medially and broadened at apex, ventral margin concave; not twisted, at most weakly convex outwardly, outwardly coriaceous, somewhat dull; in ventral view obtusely elbowed. Apex of mandible vertical, with teeth distinctly stronger ventrally. Malar space almost absent. Dorsal setae of head about as long as flagellar width or scarcely longer. Frons with distinct punctures, dense near antennae and eyes, 2–3 pit widths apart or more in central frons. Vertex and gena setae distinctly longer than frons setae but only about as thick, not particularly conspicuous. Frons microsculpture coriaceous, matte but without strong surface texture. Vertex in dorsal view very slightly concave; occipital margin broadly rounded. Lateral ocelli distinctly separate from vertex crest by less than ocellus length. Ocellar triangle anterior angle strongly acute. Head more or less parallel-sided for some distance posterior to eyes. Eye setae short, only about as long as 1–2 ommatidia. Dorsum of head in lateral view slightly convex, head deepest on line through posterior margin of eye. Venter of head posterior to mandible convex in lateral view, with relatively sparse setae. Head nearly flat ventrally, genal angle absent. Side of head posterior to eye with a line of tesselate microsculpture extending from posteroventral margin of eye to vertex crest, distinctly different from smoother sculpting dorsally and ventrally. Gena ventral to eye convex; sculpture weakly microreticulate ventrally and posterolaterally, with broad band of tesselate-colliculate sculpture extending diagonally on each side from anterior margin of eye to posteroventral margin of head. Postgenal depression very shallow, nearly absent. Antenna extending to pronotum.</p><p>MESOSOMA. Anterior margin of dorsal pronotal area in lateral view evenly rounded. Pronotal setae about as long as flagellar width or scarcely longer. Propodeal disc laterally coarsely striate; median carina absent; transverse carina absent, brow of declivity broadly rounded; metapleural carinae complete. Profemur narrow, over 2.5 times as long as wide.</p><p>METASOMA. Shining, with faint microsculpture laterally. S2–5 each with a single sparse apical row of setae (possibly with erect setae that are broken off on the unique holotype). Sixth sternum broadly glabrous medially, with sparse setae laterally.</p><p>COLOR. Body entirely dark brown to black. Antenna with scape and base of flagellum pale, becoming darker over apical half. Mandible orange to yellow. Coxae and femora brown, tibiae, tarsi, and trochanters yellow.</p><p>WINGS. Membrane tinged with yellow. Basal cells of fore wing densely or sparsely setosey. Cell 1M distinctly convex posteriorly, corner medioapical. Distal portion of vein Rs nearly straight, meeting anterior wing margin at right angle.</p><p>MEASUREMENTS. LFW 1.58 mm; LM 0.80 mm; WH/LH 0.85; DH/LH 0.51; EV/HE 0.76; EV/WF 0.62; WF/HE 1.23; WH/WF 1.58; OOL/WOT 1.54; DM/LM 0.35; FL/FW 2.87; HFL/HFW 2.50; A3 L/ W 1.65; 2R1 L/ W 2.73.</p><p><b>Distribution</b></p><p>Queensland; known only from the holotype, collected in Brisbane.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_19566942 |
| institution | Zenodo |
| language | |
| publishDate | 2026 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Sierola tenuifemur Magnacca, 2026, sp. nov. Magnacca, Karl Biodiversity Taxonomy Animalia Arthropoda Insecta Hymenoptera Bethylidae Sierola Sierola tenuifemur <p><b><i>Sierola tenuifemur</i> sp. nov.</b></p><p>urn:lsid:zoobank.org:act: 2BDA9A9E-9ABF-4C5D-BB0A-0CADBB32B6FF</p><p>Figs 183, 191</p><p><b>Diagnosis</b></p><p>Part of a complex of species with the head compressed and weakly convex dorsally and ventrally, frons broad, mandible pale and distinctly concave ventrally, and lateral ocelli separated from the vertex crest. Distinguished from similar species by the extremely narrow profemur, the most extreme seen in the genus so far. The antenna is also elongate, A3 L/W ≥1.5.</p><p><b>Etymology</b></p><p>From the Latin ‘ <i>tenuis</i> ’, ‘thin’, + ‘ <i>femur</i> ’, ‘thigh’, referring to the extremely narrow profemur, the proportionally narrowest known in the genus. It is a noun in apposition.</p><p><b>Type material</b></p><p><b>Holotype</b></p><p>AUSTRALIA – <b>Queensland</b> • ♀; Acacia Ridge, Brisbane; Oct. 1976; E.C. Dahms leg.; Malaise trap; QM T262175.</p><p><b>Description</b></p><p><b>Female</b></p><p>HEAD. Clypeal process semi-elliptical, apex rounded; dorsally with a low carina, distinctly visible only when viewed directly down towards mandibles; in profile evenly sloping, nearly straight. Mandible moderately broad, distinctly narrowed medially and broadened at apex, ventral margin concave; not twisted, at most weakly convex outwardly, outwardly coriaceous, somewhat dull; in ventral view obtusely elbowed. Apex of mandible vertical, with teeth distinctly stronger ventrally. Malar space almost absent. Dorsal setae of head about as long as flagellar width or scarcely longer. Frons with distinct punctures, dense near antennae and eyes, 2–3 pit widths apart or more in central frons. Vertex and gena setae distinctly longer than frons setae but only about as thick, not particularly conspicuous. Frons microsculpture coriaceous, matte but without strong surface texture. Vertex in dorsal view very slightly concave; occipital margin broadly rounded. Lateral ocelli distinctly separate from vertex crest by less than ocellus length. Ocellar triangle anterior angle strongly acute. Head more or less parallel-sided for some distance posterior to eyes. Eye setae short, only about as long as 1–2 ommatidia. Dorsum of head in lateral view slightly convex, head deepest on line through posterior margin of eye. Venter of head posterior to mandible convex in lateral view, with relatively sparse setae. Head nearly flat ventrally, genal angle absent. Side of head posterior to eye with a line of tesselate microsculpture extending from posteroventral margin of eye to vertex crest, distinctly different from smoother sculpting dorsally and ventrally. Gena ventral to eye convex; sculpture weakly microreticulate ventrally and posterolaterally, with broad band of tesselate-colliculate sculpture extending diagonally on each side from anterior margin of eye to posteroventral margin of head. Postgenal depression very shallow, nearly absent. Antenna extending to pronotum.</p><p>MESOSOMA. Anterior margin of dorsal pronotal area in lateral view evenly rounded. Pronotal setae about as long as flagellar width or scarcely longer. Propodeal disc laterally coarsely striate; median carina absent; transverse carina absent, brow of declivity broadly rounded; metapleural carinae complete. Profemur narrow, over 2.5 times as long as wide.</p><p>METASOMA. Shining, with faint microsculpture laterally. S2–5 each with a single sparse apical row of setae (possibly with erect setae that are broken off on the unique holotype). Sixth sternum broadly glabrous medially, with sparse setae laterally.</p><p>COLOR. Body entirely dark brown to black. Antenna with scape and base of flagellum pale, becoming darker over apical half. Mandible orange to yellow. Coxae and femora brown, tibiae, tarsi, and trochanters yellow.</p><p>WINGS. Membrane tinged with yellow. Basal cells of fore wing densely or sparsely setosey. Cell 1M distinctly convex posteriorly, corner medioapical. Distal portion of vein Rs nearly straight, meeting anterior wing margin at right angle.</p><p>MEASUREMENTS. LFW 1.58 mm; LM 0.80 mm; WH/LH 0.85; DH/LH 0.51; EV/HE 0.76; EV/WF 0.62; WF/HE 1.23; WH/WF 1.58; OOL/WOT 1.54; DM/LM 0.35; FL/FW 2.87; HFL/HFW 2.50; A3 L/ W 1.65; 2R1 L/ W 2.73.</p><p><b>Distribution</b></p><p>Queensland; known only from the holotype, collected in Brisbane.</p> |
| title | Sierola tenuifemur Magnacca, 2026, sp. nov. |
| topic | Biodiversity Taxonomy Animalia Arthropoda Insecta Hymenoptera Bethylidae Sierola Sierola tenuifemur |
| url | https://doi.org/10.5281/zenodo.19566942 |