Sierola abrupta Magnacca, 2026, sp. nov.
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2026
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| _version_ | 1866902312900886528 |
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| author | Magnacca, Karl |
| author_facet | Magnacca, Karl |
| contents | <p><b><i>Sierola abrupta</i> sp. nov.</b></p><p>urn:lsid:zoobank.org:act: E620CAFC-41CC-4893-B6C6-8C04A8BDAECE</p><p>Figs 7, 14</p><p><b>Diagnosis</b></p><p>A distinctive species, recognizable by the unusual clypeus which is moderately short but broadened laterally anterior of the antennal sockets, the lateral margin rounded with a constriction between the anterior clypeal projection and posterior lateral lobe. This is shared only with its sibling species <i>S. curtirostris</i> sp. nov., which differs in having the clypeus elongate with the apex strongly acute in profile, head flatter (DH/LH 0.51 vs 0.57), and basal wing cells sparsely setose.</p><p><b>Etymology</b></p><p>From the Latin ‘ <i>abrupta</i> ’, ‘broken’ or ‘cut off’, referring to the truncate clypeus.</p><p><b>Type material</b></p><p><b>Holotype</b></p><p>AUSTRALIA – <b>Tasmania</b> • ♀; Bellingham; 41.016° S, 147.197° E; Jan. 2024; S.J. Grove leg.; Malaise trap; TMAG F153001.</p><p><b>Description</b></p><p><b>Female</b></p><p>HEAD. Clypeal process short, broad, transverse, rounded laterally, apex truncate; dorsally weakly carinate (blunt apically); in profile steep and short, evenly curved. 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 evenly, moderately curved. Apex of mandible vertical, with teeth distinctly stronger ventrally. Malar space very small. Dorsal setae of head about as long as flagellar width or scarcely longer. Frons moderately punctate, about 2–3 pit widths apart. Vertex and gena setae similar to and only slightly longer than setae of frons. Frons microsculpture finely microreticulate, surface weakly matte (coarser posteriorly). Vertex in dorsal view more or less straight, corners broadly rounded; occipital margin narrowly carinate posterior of ocelli, becoming broadly rounded laterally. 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 evenly convex 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 shallow, rounded. Antenna extending to pronotum.</p><p>MESOSOMA. Anterior margin of dorsal pronotal area in lateral view weakly angulate. Pronotal setae longer than flagellar width. Propodeal disc laterally coarsely striate; median carina absent, but anteromedian portion of propodeum broadly elevated; transverse carina absent, brow of declivity broadly rounded; metapleural carinae present posteriorly, fading anteriorly. Profemur only moderately broadened, more than twice as long as wide, strongly laterally compressed, slightly arcuate in dorsal view.</p><p>METASOMA. Shining, with faint microsculpture laterally. S2–5 each with a single sparse apical row of setae. Sixth sternum glabrous medially, laterally with dense pilose setae.</p><p>COLOR. Body entirely dark brown to black. Antenna brown on base of scape and apical flagellomeres, yellow medially. Mandible black. Coxae, trochanters, and femora dark brown, protibia and tarsi yellow, meso- and metatibiae brown with yellow bands at bases and apices.</p><p>WINGS. Membrane tinged with yellow. Basal cells of fore wing mostly glabrous, cell R densely setose apically. Cell 1M weakly convex posteriorly, corner posteroapical. Distal portion of vein Rs nearly straight, meeting anterior wing margin at right angle.</p><p>MEASUREMENTS. LFW 1.88 mm; LM 0.91 mm; WH/LH 0.86; DH/LH 0.57; EV/HE 0.72; EV/WF 0.68; WF/HE 1.06; WH/WF 1.79; OOL/WOT 1.46; DM/LM 0.41; FL/FW 2.21; HFL/HFW 2.20; A3 L/ W 1.13; 2R1 L/ W 2.58.</p><p><b>Distribution</b></p><p>Tasmania; known only from the holotype.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_19566034 |
| institution | Zenodo |
| language | |
| publishDate | 2026 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Sierola abrupta Magnacca, 2026, sp. nov. Magnacca, Karl Biodiversity Taxonomy Animalia Arthropoda Insecta Hymenoptera Bethylidae Sierola Sierola abrupta <p><b><i>Sierola abrupta</i> sp. nov.</b></p><p>urn:lsid:zoobank.org:act: E620CAFC-41CC-4893-B6C6-8C04A8BDAECE</p><p>Figs 7, 14</p><p><b>Diagnosis</b></p><p>A distinctive species, recognizable by the unusual clypeus which is moderately short but broadened laterally anterior of the antennal sockets, the lateral margin rounded with a constriction between the anterior clypeal projection and posterior lateral lobe. This is shared only with its sibling species <i>S. curtirostris</i> sp. nov., which differs in having the clypeus elongate with the apex strongly acute in profile, head flatter (DH/LH 0.51 vs 0.57), and basal wing cells sparsely setose.</p><p><b>Etymology</b></p><p>From the Latin ‘ <i>abrupta</i> ’, ‘broken’ or ‘cut off’, referring to the truncate clypeus.</p><p><b>Type material</b></p><p><b>Holotype</b></p><p>AUSTRALIA – <b>Tasmania</b> • ♀; Bellingham; 41.016° S, 147.197° E; Jan. 2024; S.J. Grove leg.; Malaise trap; TMAG F153001.</p><p><b>Description</b></p><p><b>Female</b></p><p>HEAD. Clypeal process short, broad, transverse, rounded laterally, apex truncate; dorsally weakly carinate (blunt apically); in profile steep and short, evenly curved. 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 evenly, moderately curved. Apex of mandible vertical, with teeth distinctly stronger ventrally. Malar space very small. Dorsal setae of head about as long as flagellar width or scarcely longer. Frons moderately punctate, about 2–3 pit widths apart. Vertex and gena setae similar to and only slightly longer than setae of frons. Frons microsculpture finely microreticulate, surface weakly matte (coarser posteriorly). Vertex in dorsal view more or less straight, corners broadly rounded; occipital margin narrowly carinate posterior of ocelli, becoming broadly rounded laterally. 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 evenly convex 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 shallow, rounded. Antenna extending to pronotum.</p><p>MESOSOMA. Anterior margin of dorsal pronotal area in lateral view weakly angulate. Pronotal setae longer than flagellar width. Propodeal disc laterally coarsely striate; median carina absent, but anteromedian portion of propodeum broadly elevated; transverse carina absent, brow of declivity broadly rounded; metapleural carinae present posteriorly, fading anteriorly. Profemur only moderately broadened, more than twice as long as wide, strongly laterally compressed, slightly arcuate in dorsal view.</p><p>METASOMA. Shining, with faint microsculpture laterally. S2–5 each with a single sparse apical row of setae. Sixth sternum glabrous medially, laterally with dense pilose setae.</p><p>COLOR. Body entirely dark brown to black. Antenna brown on base of scape and apical flagellomeres, yellow medially. Mandible black. Coxae, trochanters, and femora dark brown, protibia and tarsi yellow, meso- and metatibiae brown with yellow bands at bases and apices.</p><p>WINGS. Membrane tinged with yellow. Basal cells of fore wing mostly glabrous, cell R densely setose apically. Cell 1M weakly convex posteriorly, corner posteroapical. Distal portion of vein Rs nearly straight, meeting anterior wing margin at right angle.</p><p>MEASUREMENTS. LFW 1.88 mm; LM 0.91 mm; WH/LH 0.86; DH/LH 0.57; EV/HE 0.72; EV/WF 0.68; WF/HE 1.06; WH/WF 1.79; OOL/WOT 1.46; DM/LM 0.41; FL/FW 2.21; HFL/HFW 2.20; A3 L/ W 1.13; 2R1 L/ W 2.58.</p><p><b>Distribution</b></p><p>Tasmania; known only from the holotype.</p> |
| title | Sierola abrupta Magnacca, 2026, sp. nov. |
| topic | Biodiversity Taxonomy Animalia Arthropoda Insecta Hymenoptera Bethylidae Sierola Sierola abrupta |
| url | https://doi.org/10.5281/zenodo.19566034 |