Piasites seyrigi, Bordera & Santos, 2022
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publication ID |
https://dx.doi.org/10.3897/jhr.90.81095 |
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publication LSID |
lsid:zoobank.org:pub:EA0491B0-3B62-4360-B9F7-9A24E3693248 |
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persistent identifier |
https://treatment.plazi.org/id/EB774A02-AD9B-40A0-97D6-FCE8B7567FCF |
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taxon LSID |
lsid:zoobank.org:act:EB774A02-AD9B-40A0-97D6-FCE8B7567FCF |
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treatment provided by |
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scientific name |
Piasites seyrigi |
| status |
sp. nov. |
Piasites seyrigi sp. nov.
Figs 2D View Figure 2 , 11 View Figure 11 , 12C View Figure 12 , 13C View Figure 13 , 15D View Figure 15
Diagnosis.
Piasites seyrigi sp. nov. can be distinguished from all other Piasites species by the combination of the following characters: mesoscutum evenly convex, mostly smooth and shiny, with very fine punctures on anterior part of median lobe (Figs 11C, D View Figure 11 , 13C View Figure 13 ); metapleuron transversely strigose punctate (Figs 11C View Figure 11 , 13C View Figure 13 ); juxtacoxal carina strong and complete (Figs 11C View Figure 11 , 13C View Figure 13 ); propodeum strongly rugose; posterior transverse carina forming conspicuous lateral crests in female (Figs 2D View Figure 2 , 11C View Figure 11 ), lower in male (Fig. 13C View Figure 13 ); areolet 0.6-0.7 × as high as abscissa of vein 2m-cu above bulla (Fig. 11E View Figure 11 ); front and mid coxae yellow cream, hind coxa black and yellow cream (Figs 11A View Figure 11 , 12C View Figure 12 ) without longitudinal yellow cream stripe at base; T1 and T3 black, T2 yellow cream (Figs 11A View Figure 11 12C). Additionally, male has pronotum and mesopleuron mostly smooth and shiny, shallowly strigose punctate dorsally; mesopleuron with shallow rugae close to mesopleural fovea (Fig. 13C View Figure 13 ).
Description.
Female. Fore wing length 6.0-7.0 mm.
Head. In dorsal view, strongly narrowed behind eyes about 0.55 as long as wide. Gena in dorsal view rounded, slightly swollen. Posterior ocellus separated from eye 1.25-1.35 × its maximum diameter. Distance between posterior ocelli 1.0-1.2 × their diameter. Occipital carina complete, evenly curved in dorsal view. Face mostly smooth and shiny, slightly convex in the central part, with very fine setiferous punctures. Clypeal suture present laterally. Clypeus 1.80-1.95 × as broad as medially long, very convex, with relatively long setae in the central part, prominent in lateral view, ventral margin slightly rounded, almost truncate, with a weak median denticle. Malar space 0.6-0.7 × as long as basal mandibular width. Mandible 1.55 × as long as basal width; dorsal tooth distinctly longer than ventral one. Antenna with 29 flagellomeres, strongly tapered towards apex; flagellomeres from f10(11) to apex conspicuously flattened ventrally; f1 7.0-7.5 × as long as its maximum width.
Mesosoma. Pronotum longitudinally strigose punctate posteriorly to anterior depression, stronger dorsally and ventrally; epomia moderately strong, short, reaching just the anterior depression of pronotum. Mesoscutum about 1.05 × as long as wide, evenly convex, predominantly smooth and shiny, with very fine and dense setiferous punctures on anterior part of median lobe, very sparse on anterior part of lateral lobes; middle part with weak rugosities between posterior end of notauli; notaulus deep, reaching about 0.7 length of mesoscutum, without transverse keels. Scutellum with coarse and sparse punctures anteriorly, lateral carinae strong, reaching 0.7 its length. Mesopleuron finely longitudinally strigose punctate and striate punctate on a smooth background, sternaulus deep and wide, with very strong transverse keels; epicnemial carina relatively strong, reaching the subtegular ridge. Metapleuron with transverse strong striation, coarse and stronger posteriorly, weaker anteriorly, finely punctate; juxtacoxal and submetapleural carinae very strong and complete. Propodeum strongly rugose; anterior transverse carina complete, centrally distinctly curved towards anterior part; posterior transverse carina strong and complete, forming conspicuous lateral crests, central part widely curved, tending to be subparallel to anterior transverse carina. Hind leg with femur 5.8-5.9 × as long as high. Areolet pentagonal, 0.7-0.8 × as high as wide, relatively small, 0.6-0.7 × as high as abscissa of vein 2m-cu above bulla. Hind wing with vein cu-a 0.6-0.62 × length of first abscissa of CU.
Metasoma. T1 2.55-2.6 × as long as posteriorly broad, granulate, weakly curved dorsally in lateral view, dorso-lateral carina weak but complete. T2 0.8-0.9 × as long as posteriorly broad, finely granulate as the following tergites. Ovipositor sheath 0.6-0.7 × as long as hind tibia.
Colour. Body orange, black and yellow cream. Head predominantly black with face and frons (except periphery of antennal sockets), a spot at dorsal part of outer ocular orbit, clypeus centrally, labrum, base of mandible and palpi, yellow cream; scape, pedicel and f1-3 dark orange to brown, following flagellomeres blackish brown, f5-9(10) white. Mesosoma dark orange, anterior part of pronotum and propleuron, mesosternum and metasternum dark brown; subtegular ridge and a subventral spot on pronotum yellow cream. T1, T3-4 black, T2 yellow cream, T5-8 mostly yellow cream, anteriorly black. Legs predominantly orange; front and mid coxae and tranchanters white cream; hind coxa black with dorsal apical 0.5 yellow cream, hind trochanter and trochantellus black. Wings hyaline, slightly yellowish, pterostigma light brown.
Male. Fore wing length about 6.7 mm. Head. Posterior ocellus separated from eye about 1.4 × its maximum diameter. Distance between hind ocelli about once maximum diameter of posterior ocellus. Clypeus about 1.9 × as broad as medially long. Malar space about 0.58 × as long as basal mandibular width. Antenna with 29 flagellomeres; flagellum only slightly enlarged subapically; flagellomeres from f14(15) to apex flattened ventrally; f1 about 6.0 × long as its maximum width. Mesosoma. Pronotum mostly smooth and shiny, shallowly strigose punctate dorsally. Mesopleuron shallowly strigose punctate dorsally and centrally close to mesopleural fovea, elsewhere smooth and shiny; sternaulus with weak transverse keels. Metapleuron transversely strigose punctate. Posterior transverse carina forming low lateral crests. Areolet about 0.67 × as high as wide, about 0.7 × as high as abscissa of vein 2m-cu above bulla. Hind wing with vein cu-a 0.64 × as long as first abscissa of CU. Metasoma. T1 about 3.0 × as long as posteriorly broad. T2 about 1.15 × as long as posteriorly broad. Colour. As female, antenna broken, white band from f8 to f14. Other features as in female.
Etymology.
This species is named after entomologist André Seyrig, who described Piasites and provided a pioneering and thorough taxonomic assessment of the cryptine fauna of Madagascar.
Material examined.
5 ♀♀ 2 ♂♂. Holotype: Madagascar • ♀ ; Ambositra; Museum Paris; XI-36; A. Seyrig; MNHN. Paratypes: Madagascar • 1♀ ; same collection data as for holotype • 2♀♀, 1♂ ; same data as for preceding; III-38 • 1♀ ; same data as for preceding; II-39 (all them MNHN) . Other material. Madagascar • 1♂ ; Ambositra; Museum Paris; III-38; A. Seyrig; MNHN. This specimen has the vein cu-a+first abscissa of CU of hind wing straight without any interception by second abscissa of CU, which is vestigial at some distance.
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