Mesochorus (Stictopisthus) achterbergi, Riedel, 2023
publication ID |
https://doi.org/ 10.11646/zootaxa.5245.1.1 |
publication LSID |
lsid:zoobank.org:pub:7015E475-56A7-4AF1-8964-A167C672A234 |
DOI |
https://doi.org/10.5281/zenodo.7675015 |
persistent identifier |
https://treatment.plazi.org/id/B20D813A-D421-FFAC-FF51-FE5CFD72249A |
treatment provided by |
Plazi |
scientific name |
Mesochorus (Stictopisthus) achterbergi |
status |
sp. nov. |
Mesochorus (Stictopisthus) achterbergi nov. sp.
( Figs 1C View FIGURE 1 , 8C View FIGURE 8 , 14A View FIGURE 14 )
Holotype. (♀) Malaysia: SE Sabah, nr Danum Valley Field C, c. 150 m, WONO, Mal. trap 10, 15–19.iii.1987, C. v. Achterberg, RMNH´87 (Leiden).
Description. ♀: Body length 3.5 mm. Fore wing 3.0 mm.
Head. Flagellum with 30 flagellomeres; 1 st flagellomere 5.9 × longer than wide and 1.6 × longer than 2 nd flagellomere, 0.7 × as long as eye; 2 nd flagellomere 3.6 × longer than wide; preapical flagellomere c 2.0 × longer than wide. Occipital carina shortly obsolete medially. Temple distinctly and roundly narrowed behind eye, dorsally c 0.4 × as long as eye. OED 1.6 × and OOD 0.7 × ocellar diameter. Frons almost smooth, with shallow triangular elevation below anterior ocellus and with two fine paramedian ridges between antennal sockets. Face ( Fig. 8C View FIGURE 8 ) including facial orbit coarsely punctate, width 1.1 × combined length of face and clypeus and 1.1× eye length; inner eye margins slightly convergent ventrally. Subantennal transverse carina not dipped medially. Malar space with fine striae. Malar space 0.9 × as long as width of mandibular base. Mandible with two equal teeth. Genal carina reaching hypostomal carina away from mandibular base, both carinae low.
Mesosoma . 1.7 × longer than high. Side of pronotum largely smooth, with few very sparse punctures. Notaulus distinct in frontal 0.3 of mesoscutum. Mesoscutum with rather dense punctures, shining ( Fig. 14A View FIGURE 14 ). Mesopleuron with coarse but sparse punctures, speculum smooth. Dorsal end of epicnemial carina separated from frontal margin of mesopleuron. Scuto-scutellar groove rather large, c 2.5 × wider than long, with c 6 longitudinal ridges ( Fig. 14A View FIGURE 14 ). Scutellum rounded in profile, with fine sparse punctures, without lateral carina, not pointed apically. Area basalis trapezoid, about as long as wide.Area superomedia short, 1.5 × longer than wide and 0.8 × as long as area petiolaris, smooth; anterior transverse carina (costula) reaching its at 7/10 of its length. Area petiolaris longer than wide. Hind femur 3.1× longer than wide. Hind tarsus rather short; hind metatarsus 0.5 × as long as hind tibia and 2.7 × longer than 2 nd hind tarsomere; hind claw with 3 basal teeth, the distal tooth very long. Areolet shortly sessile frontally; vein 2m-cu slightly proximad its middle. Vein 1cu-a strongly postfurcal by 1.0 × its length. Postnervulus intercepted in its middle. Pterostigma 2.9 × longer than wide. Hind wing with 4 distal hamuli. Nervellus of hind wing vertical.
1 st tergite 2.5 × longer than wide. Postpetiolus with longitudinal rugae. 2 nd tergite 1.2 × wider than long. Thyridium comma-shaped. Ovipositor sheath with sparse setae, 7.1 × longer than wide, 0.5 × as long as hind tibia and 1.0 × as long as hind metatarsus, moderately bent upwards apically.
Color. Body mainly reddish-yellow. Flagellum ochreous basally, brownish distally. Palps, mandible except teeth, malar space, clypeus, face, ventral gena and ventral half of frontal orbit cream-yellow. Mesosoma reddishyellow; side of pronotum ventrally, hind edge of pronotum and tegula cream-yellow. 1 st tergite reddish-brown, basally yellowish. 2 nd tergite yellow, with brown triangular anterolateral spots. 3 rd tergite apically and 4 th tergite basally with roundish brown spot dorsally. Ovipositor sheath brown. Fore and mid coxae and trochanters creamyellow; legs otherwise reddish-yellow; hind tibia in apical 0.1 and hind tarsus entirely reddish-brown. Pterostigma hyaline, apical margin brownish.
♁ unknown.
Taxonomical remark. Within the subgenus Stictopisthus , this new species is characterized by the partly obsolete occipital carina, anterior transverse carina of propodeum reaching the area superomedia distally, rather wide face, and a long distal tooth of hind claw.
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.
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