Sierola scutula 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 scutula</i> sp. nov.</b></p><p>urn:lsid:zoobank.org:act: B64FC83F-C96D-4F4A-BF14-B7DE56F08505</p><p>Figs 153, 174</p><p><b>Diagnosis</b></p><p>Among species with a strongly compressed body and flat head, separated from the <i>compressa</i> group by the relatively long, narrow, quadrate head. Closest to <i>S. antipoda</i>, distinguished by the sparsely setose basal wing cells and moderately narrow, parallel-sided mandible, smooth frons microsculpture, and head longer posterior of the eyes.</p><p><b>Etymology</b></p><p>From the Latin ‘ <i>scutula</i> ’, ‘lozenge’, referring to the shape of the head. It is a noun in apposition.</p><p><b>Type material</b></p><p><b>Holotype</b></p><p>AUSTRALIA – <b>Western Australia</b> • ♀; 22 km N of Eneabba; 29°38′ S, 115°14′ E; 13 Jun. 1995; L.S. and R.B. Kimsey leg.; ex <i>Eucalyptus</i>; UCDC 10108.</p><p><b>Description</b></p><p><b>Female</b></p><p>HEAD. Clypeal process semi-elliptical to very short, almost transverse, extending only slightly beyond lateral portion of clypeus, apex broadly rounded to truncate; dorsally with a low carina, distinctly visible only when viewed directly down towards mandibles, or with a sharp carina; in profile evenly curved from base to apex, apical angle slightly acute. Mandible narrow to moderately narrow, more or less parallel-sided except at base; not twisted, at most weakly convex outwardly, outwardly shining but with distinct, fine microsculpture; in ventral view weakly curved. Apex of mandible vertical, with teeth distinctly stronger ventrally. Malar space almost absent. Dorsal setae of head shorter than flagellar width. Frons with shallow, uneven punctures, 1–3 pit widths apart. Vertex and gena setae similar to and only slightly longer than setae of frons. Frons microsculpture evident but smooth, shining. Vertex in dorsal view more or less straight; occipital margin narrowly rounded. Lateral ocelli nearly touching vertex crest. Ocellar triangle anterior angle weakly acute to right. Head more or less parallel-sided for some distance posterior to eyes. Eye setae moderate, about as long as 2–3 ommatidia. Dorsum of head in lateral view nearly flat, head deepest on line well posterior 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 posterolaterally, coriaceous ventrally, with broad band of tesselate-colliculate sculpture extending diagonally from anterior margin of eye to posteroventral margin of head. Postgenal depression absent. Antenna short, scarcely extending beyond head.</p><p>MESOSOMA. Strongly dorsoventrally compressed. Anterior margin of dorsal pronotal area in lateral view evenly rounded, pronotal disc distinctly flattened. Pronotal setae about as long as flagellar width or scarcely longer. Propodeal disc laterally finely, weakly striate; median carina absent; transverse carina absent, brow of declivity broadly rounded; metapleural carinae nearly absent, visible only beyond propodeal declivity. 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.</p><p>COLOR. Body entirely dark brown to black. Antenna dark brown dorsally, yellowish brown ventrally. Mandible black. Coxae and femora brown, tibiae brown except at base and apex, trochanters and tarsi yellow.</p><p>WINGS. Membrane tinged with yellow. Basal cells of fore wing sparsely setose, with one or two rows of setae in each cell. 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 1.38 mm; LM 0.70 mm; WH/LH 0.71; DH/LH 0.37; EV/HE 1.11; EV/WF 1.08; WF/HE 1.02; WH/WF 1.75; OOL/WOT 1.49; DM/LM 0.25; FL/FW 2.24; HFL/HFW 2.17; A3 L/ W 0.87; 2R1 L/ W 2.83.</p><p><b>Distribution</b></p><p>Western Australia; known only from the holotype, collected near the west coast.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_19566882 |
| institution | Zenodo |
| language | |
| publishDate | 2026 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Sierola scutula Magnacca, 2026, sp. nov. Magnacca, Karl Biodiversity Taxonomy Animalia Arthropoda Insecta Hymenoptera Bethylidae Sierola Sierola scutula <p><b><i>Sierola scutula</i> sp. nov.</b></p><p>urn:lsid:zoobank.org:act: B64FC83F-C96D-4F4A-BF14-B7DE56F08505</p><p>Figs 153, 174</p><p><b>Diagnosis</b></p><p>Among species with a strongly compressed body and flat head, separated from the <i>compressa</i> group by the relatively long, narrow, quadrate head. Closest to <i>S. antipoda</i>, distinguished by the sparsely setose basal wing cells and moderately narrow, parallel-sided mandible, smooth frons microsculpture, and head longer posterior of the eyes.</p><p><b>Etymology</b></p><p>From the Latin ‘ <i>scutula</i> ’, ‘lozenge’, referring to the shape of the head. It is a noun in apposition.</p><p><b>Type material</b></p><p><b>Holotype</b></p><p>AUSTRALIA – <b>Western Australia</b> • ♀; 22 km N of Eneabba; 29°38′ S, 115°14′ E; 13 Jun. 1995; L.S. and R.B. Kimsey leg.; ex <i>Eucalyptus</i>; UCDC 10108.</p><p><b>Description</b></p><p><b>Female</b></p><p>HEAD. Clypeal process semi-elliptical to very short, almost transverse, extending only slightly beyond lateral portion of clypeus, apex broadly rounded to truncate; dorsally with a low carina, distinctly visible only when viewed directly down towards mandibles, or with a sharp carina; in profile evenly curved from base to apex, apical angle slightly acute. Mandible narrow to moderately narrow, more or less parallel-sided except at base; not twisted, at most weakly convex outwardly, outwardly shining but with distinct, fine microsculpture; in ventral view weakly curved. Apex of mandible vertical, with teeth distinctly stronger ventrally. Malar space almost absent. Dorsal setae of head shorter than flagellar width. Frons with shallow, uneven punctures, 1–3 pit widths apart. Vertex and gena setae similar to and only slightly longer than setae of frons. Frons microsculpture evident but smooth, shining. Vertex in dorsal view more or less straight; occipital margin narrowly rounded. Lateral ocelli nearly touching vertex crest. Ocellar triangle anterior angle weakly acute to right. Head more or less parallel-sided for some distance posterior to eyes. Eye setae moderate, about as long as 2–3 ommatidia. Dorsum of head in lateral view nearly flat, head deepest on line well posterior 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 posterolaterally, coriaceous ventrally, with broad band of tesselate-colliculate sculpture extending diagonally from anterior margin of eye to posteroventral margin of head. Postgenal depression absent. Antenna short, scarcely extending beyond head.</p><p>MESOSOMA. Strongly dorsoventrally compressed. Anterior margin of dorsal pronotal area in lateral view evenly rounded, pronotal disc distinctly flattened. Pronotal setae about as long as flagellar width or scarcely longer. Propodeal disc laterally finely, weakly striate; median carina absent; transverse carina absent, brow of declivity broadly rounded; metapleural carinae nearly absent, visible only beyond propodeal declivity. 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.</p><p>COLOR. Body entirely dark brown to black. Antenna dark brown dorsally, yellowish brown ventrally. Mandible black. Coxae and femora brown, tibiae brown except at base and apex, trochanters and tarsi yellow.</p><p>WINGS. Membrane tinged with yellow. Basal cells of fore wing sparsely setose, with one or two rows of setae in each cell. 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 1.38 mm; LM 0.70 mm; WH/LH 0.71; DH/LH 0.37; EV/HE 1.11; EV/WF 1.08; WF/HE 1.02; WH/WF 1.75; OOL/WOT 1.49; DM/LM 0.25; FL/FW 2.24; HFL/HFW 2.17; A3 L/ W 0.87; 2R1 L/ W 2.83.</p><p><b>Distribution</b></p><p>Western Australia; known only from the holotype, collected near the west coast.</p> |
| title | Sierola scutula Magnacca, 2026, sp. nov. |
| topic | Biodiversity Taxonomy Animalia Arthropoda Insecta Hymenoptera Bethylidae Sierola Sierola scutula |
| url | https://doi.org/10.5281/zenodo.19566882 |