Zetheumenidion Bequaert, 1926
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publication ID |
https://doi.org/ 10.11646/zootaxa.5406.1.2 |
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publication LSID |
lsid:zoobank.org:pub:F4164A07-7B45-41E6-8611-A7EA6708E82E |
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DOI |
https://doi.org/10.5281/zenodo.10624542 |
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persistent identifier |
https://treatment.plazi.org/id/5C1587AE-5745-FB09-D5F4-FC21FA5C2AC1 |
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treatment provided by |
Plazi |
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scientific name |
Zetheumenidion Bequaert |
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Key to the species of Zetheumenidion Bequaert
1. Pronotal carina markedly depressed in the median third, where it is less than half as long as on lateral thirds; in dorsal view, anterior margin of pronotum markedly concave with anteriorly projecting lateral thirds ( Fig. 14A View FIGURE 14 ). Mesepisternum coarsely punctured, interspaces mostly reduced to narrow sharp ridges ( Fig. 14C View FIGURE 14 ).................... Z. pulchripenne (Cameron)
-. Pronotal carina of regular height for whole length, at most narrowly incised on median line; in dorsal view, anterior margin of pronotum straight or evenly concave, without anteriorly projecting lateral thirds ( Fig. 14B View FIGURE 14 ). Mesepisternum variably punctured, but interspaces never reduced to sharp ridges ( Figs. 14D–E View FIGURE 14 )................................................... 2
2. Dorsal side of mesosoma forming an even surface from pronotum to dorsal faces of propodeum, without the slightest discontinuity between the sclerites; median furrow of propodeum very narrow and shallow in upper part, dorsal faces smoothly passing into each other ( Fig. 14F View FIGURE 14 ). Male: outer face of hind femur markedly shagreened, shagreen visible at low magnification ( Figs. 2D View FIGURE 2 , 7C View FIGURE 7 , 10D View FIGURE 10 )................................................................................... 3
-. Dorsal side of mesosoma not forming an even surface, at least a weak but marked discontinuity between sclerites, either for scutellum raised above level of mesoscutum, convex metanotum, bulging dorsal faces of propodeum, or combinations of these; median furrow of propodeum wider and/or deeper in upper part, dorsal faces clearly separated by it ( Fig. 14G View FIGURE 14 ). Male: outer face of hind femur smooth or with very fine shagreen visible at high magnification only ( Figs. 1C View FIGURE 1 , 3D View FIGURE 3 , 4D View FIGURE 4 , 5D View FIGURE 5 , 6D View FIGURE 6 , 8C View FIGURE 8 , 9C View FIGURE 9 ).... 5
3. Lateral carinae of propodeum absent, transition between dorsal and lateral faces entirely rounded ( Fig. 14M View FIGURE 14 ). Pronotum and mesoscutum strongly shiny, interspaces entirely smooth ( Fig. 14H View FIGURE 14 ). Clypeus red in both sexes ( Figs. 10B–C View FIGURE 10 ); on mesosoma, only pronotum with a narrow anterior ivory line ( Fig. 10A View FIGURE 10 ); T2 reddish-orange at apex, without ivory band ( Fig. 10E View FIGURE 10 ). Male: outer face of hind femur more finely and sparsely shagreened, distinctly shiny, with distinct deep punctures ( Fig. 10D View FIGURE 10 ).................................................................................... Z. paeneplanum (Bequaert)
-. Lateral carinae of propodeum present and visible even if subtle, transition between dorsal and lateral faces angled ( Figs. 14N–O View FIGURE 14 ). Pronotum and mesoscutum not so shiny, interspaces either with deep micropunctures or not sculpted but silky-shining ( Figs. 14I–J View FIGURE 14 ). Clypeus marked with pale yellow in both sexes, almost entirely in male (female of Z. invertitum unknown) ( Figs. 2B–C View FIGURE 2 , 7B View FIGURE 7 ); on mesosoma, ivory markings at least on pronotum, tegula and parategula, commonly on scutellum and metanotum too ( Figs. 2A View FIGURE 2 , 7A View FIGURE 7 ); T2 with apical ivory band ( Figs. 2E View FIGURE 2 , 7D View FIGURE 7 ). Male: outer face of hind femur more coarsely and densely shagreened, matte, with very fine and barely visible punctures ( Figs. 2D View FIGURE 2 , 7C View FIGURE 7 )...................................... 4
4. Lateral carinae of propodeum subtle and not projecting; lateral faces of propodeum concave, with distinct punctures ( Fig. 14N View FIGURE 14 ). Interspaces on mesoscutum and scutellum narrower than puncture diameter, with deep micropunctures ( Fig. 14I View FIGURE 14 ); posterior corners of propodeum with interspaces reduced to sharp ridges. Male: clypeus ivory-yellow with lateral black markings ( Fig. 7B View FIGURE 7 )......................................................................... Z. invertitum (Giordani Soika)
-. Lateral carinae of propodeum thick and strongly projecting, forming a hood above the lateral faces, which are flattened and finely striate ( Fig. 14O View FIGURE 14 ). Interspaces on mesoscutum and scutellum about as wide as puncture diameter and silky shiny, without micropunctures ( Fig. 14J View FIGURE 14 ); posterior corners of propodeum without narrow and sharp interspaces. Male: clypeus entirely ivory-yellow ( Fig. 2B View FIGURE 2 )............................................................ Z. celonitiforme (Giordani Soika)
5. Interspaces on pronotum and anterior half of mesoscutum wider than puncture diameter ( Fig. 14K View FIGURE 14 ). T2 with deep punctures on whole surface; apical lamella of T2 strongly reflexed, about as high as two ocellar diameters and its apex exceeding height of preapical swelling ( Fig. 6E View FIGURE 6 )......................................................... Z. hessei (Giordani Soika)
-. Interspaces on pronotum and anterior half of mesoscutum shorter than puncture diameter ( Fig. 14L View FIGURE 14 ). T2 with punctures disappearing in basal half; apical lamella of T2 flattened or weakly reflexed, at most as high as one ocellar diameter and its apex not exceeding height of preapical swelling ( Figs. 1D View FIGURE 1 , 3E View FIGURE 3 , 4E View FIGURE 4 , 5E View FIGURE 5 , 8D View FIGURE 8 , 9D View FIGURE 9 ).................................... 6
6. Propodeum with a well-developed subhorizontal face behind the metanotum, as long as the metanotum itself; in lateral view, the dorsal face is weakly oblique and then steeply curves into the posterior face ( Fig. 14R View FIGURE 14 ). T 1 in lateral view abruptly expanded basally, forming a hump in basal third and then markedly narrowing to apex ( Figs. 1D View FIGURE 1 , 8D View FIGURE 8 ).......................... 7
-. Propodeum without a subhorizontal face, more or less convex but always sloping from base to apex ( Fig. 14S View FIGURE 14 ). T 1 in lateral view evenly expanded basally, maintaining the same height and curvature for most of its length ( Figs. 3E View FIGURE 3 , 4E View FIGURE 4 , 5E View FIGURE 5 , 9D View FIGURE 9 )..... 8
7. Lateral faces of propodeum deeply concave, forming a deep pit above valvula; propodeal valvula about as long as basally wide ( Fig. 14P View FIGURE 14 ). T 1 in dorsal view not widened near base, width at level of spiracles about equal to apical width; dorsal face of T1 convex and evenly passing into lateral faces, without longitudinal furrow ( Fig. 1A View FIGURE 1 ). Apical lamella of T2 less reflexed, in lateral view its apex not reaching height of preapical swelling ( Fig. 1D View FIGURE 1 )................................ Z. abruptum sp. nov.
-. Lateral faces of propodeum shallowly concave, not forming a pit above valvula; propodeal valvula longer than basally wide ( Fig. 14Q View FIGURE 14 ). T 1 in dorsal view markedly widened near base, width at level of spiracles distinctly greater than apical width; dorsal face of T1 flattened and separated from lateral faces, with a longitudinal furrow at level of spiracles ( Fig. 8A View FIGURE 8 ). Apical lamella of T2 more reflexed, in lateral view its apex reaching height of preapical swelling ( Fig. 8D View FIGURE 8 ).............. Z. latum sp. nov.
8. Mesepisternum with dense small punctures ( Fig. 14D View FIGURE 14 ). Mid-line of propodeum evenly weakly convex and sloping from base to apical orifice; posterolateral corners of propodeum not bulging above valvula in lateral view. Apical lamella of T2 not or barely reflexed, its apex placed well below level of preapical swelling ( Figs. 3E View FIGURE 3 , 5E View FIGURE 5 )..................................... 9
-. Mesepisternum with large punctures ( Fig. 14E View FIGURE 14 ). Mid-line of propodeum more strongly convex in dorsal half, not evenly sloping from base to apical orifice; posterolateral corners of propodeum distinctly bulging above valvula in lateral view. Apical lamella of T2 weakly but distinctly reflexed, forming a vertical part almost as high as one ocellar diameter and reaching height of preapical swelling ( Figs. 4E View FIGURE 4 , 9D View FIGURE 9 )........................................................................ 10
9. Black and yellow, with some red markings on metasoma, sometimes small areas on mesosoma ( Fig. 5A View FIGURE 5 ). Dorsal faces of propodeum with rounded smooth and shiny interspaces. Male: apical margin of clypeus subtruncate ( Fig. 5B View FIGURE 5 ); hind femur weakly swollen on ventral face ( Fig. 5D View FIGURE 5 )........................................... Z. flavissimum Giordani Soika
-. Black and ferruginous-red, at most apex of T2 with orange-yellow tinge ( Fig. 3A View FIGURE 3 ). Dorsal faces of propodeum with ridge-like microsculpted and matte interspaces. Male: apical margin of clypeus evenly emarginate ( Fig. 3B View FIGURE 3 ); hind femur strongly swollen on ventral face ( Fig. 3D View FIGURE 3 )............................................................. Z. concinnoide sp. nov.
10. Clypeus about as long as wide; apical margin of clypeus subtruncate ( Figs. 4B–C View FIGURE 4 ). Male: free apical part of clypeus about half as long as basal part ( Fig. 4B View FIGURE 4 ); F1 proportionally robust, 2.3 × as long as wide............. Z. femoratum (von Schulthess)
-. Clypeus distinctly longer than wide; apical margin of clypeus distinctly emarginate ( Fig. 9B View FIGURE 9 ). Male: free apical part of clypeus about 0.75 × as long as basal part ( Fig. 9B View FIGURE 9 ); F1 proportionally slender, 2.6 × as long as wide. Female unknown................................................................................................ Z. minimum sp. nov.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.