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Zenodo
2026
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| Online Access: | https://doi.org/10.5281/zenodo.19566295 |
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- <p><b><i>Sierola corynognatha</i> sp. nov.</b></p><p>urn:lsid:zoobank.org:act: 4AF29CCD-AD74-44C4-8398- CAD 67D5A969D</p><p>Figs 49, 58</p><p><b>Diagnosis</b></p><p>Among species with the basal wing cells sparsely setose, mandible black, and head convex dorsally, forming a species pair with <i>S. sinuata</i> sp. nov., united by the unusual sinuate mandible (bent mesally near the base to form an outward concavity, apical half convex and swollen). Distinguished by the stripe of modified sculpture on the median frons (cellules greatly elongated, distinctly different from the round cellules of the rest of the head), head dorsally more strongly convex, lateral ocelli nearly touching the vertex crest, legs mostly yellow with the femora tinged brown, and in the head dimensions.</p><p><b>Etymology</b></p><p>From the Greek ‘ <i>koryne</i> ’, ‘club’, + <i>gnathos</i> ’, ‘jaw’, referring to the apically swollen mandible. It is a noun in apposition.</p><p><b>Type material</b></p><p><b>Holotype</b></p><p>AUSTRALIA – <b>Queensland</b> • ♀; Mundubbera; May 2000; C. Freebairn leg.; Malaise trap; UCRC 154014.</p><p><b>Description</b></p><p><b>Female</b></p><p>HEAD. Clypeal process semicircular, apex rounded; dorsally with a low carina, distinctly visible only when viewed directly down towards mandibles, or with a sharp carina; in profile weakly sloping dorsally but strongly rounded and recurved at apex. Mandible moderately broad, distinctly narrowed medially and broadened at apex, ventral margin concave; bent inwards and conspicuously concave externally just past base, apical half outwardly convex and slightly swollen, outwardly coriaceous in median concavity, polished at base, apex somewhat shining but with distinct, fine microsculpture; in ventral view sinuate. Apex of mandible vertical, with equally strong teeth. Malar space almost absent. Dorsal setae of head about as long as flagellar width or scarcely longer. Frons with relatively regular, moderately close punctures, 1–2 pit widths apart. Vertex and gena setae similar to and only slightly longer than setae of frons. Frons microsculpture dull, granular (with distinct strip of dense lineate sculpture between the median ocellus and clypeus). Vertex in dorsal view more or less straight; occipital margin not carinate but forming a pronounced ridge. Lateral ocelli nearly touching vertex crest. Ocellar triangle anterior angle right. Head rounded shortly 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 eye. Venter of head posterior to mandible convex in lateral view, with moderately dense pubescence. Head evenly convex ventrally, genal angle absent. Side of head posterior to eye convex. Gena ventral to eye concave; 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 absent. Antenna extending to pronotum.</p><p>MESOSOMA. Anterior margin of dorsal pronotal area in lateral view evenly rounded. Pronotal setae longer than flagellar width. Propodeal disc laterally coarsely striate; median carina absent; transverse carina absent, brow of declivity broadly rounded; metapleural carinae complete. Profemur robust, about twice as long as wide and strongly convex dorsally, strongly laterally compressed, slightly arcuate in dorsal view.</p><p>METASOMA. Shining, apical tergites laterally punctate and with faint microreticulation. S3–5 each with an apical band of setae. Sixth sternum glabrous medially, with a mix of long and short setae laterally.</p><p>COLOR. Body entirely dark brown to black (metasomal terga with slightly paler W-shaped marks). Antenna yellow, apical flagellomeres tinged with brown. Mandible black. Legs all yellow except dorsal margins of femora tinged with brown.</p><p>WINGS. Membrane hyaline. 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 1.70 mm; LM 0.90 mm; WH/LH 0.88; DH/LH 0.56; EV/HE 0.46; EV/WF 0.50; WF/HE 0.93; WH/WF 1.87; OOL/WOT 1.02; DM/LM 0.37; FL/FW 1.97; HFL/HFW 2.12; A3 L/ W 1.21; 2R1 L/ W 2.67.</p><p><b>Distribution</b></p><p>Queensland; known only from the holotype, collected in the southeast interior.</p>