Chelonus (Areselonus) sigiriyansis, Ranjith & Priyadarsanan, 2023
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publication ID |
https://doi.org/ 10.11646/zootaxa.5278.3.3 |
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publication LSID |
lsid:zoobank.org:pub:1AAFCC5B-14BA-4E13-B25E-5C132CB9085A |
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DOI |
https://doi.org/10.5281/zenodo.7917737 |
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persistent identifier |
https://treatment.plazi.org/id/498AFD0B-3B13-4B21-9A8E-8F71D407D685 |
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taxon LSID |
lsid:zoobank.org:act:498AFD0B-3B13-4B21-9A8E-8F71D407D685 |
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treatment provided by |
Plazi |
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scientific name |
Chelonus (Areselonus) sigiriyansis |
| status |
sp. nov. |
Chelonus (Areselonus) sigiriyansis sp. nov.
( Figs 1–2 View FIGURE 1 View FIGURE 2 )
urn:lsid:zoobank.org:act:498AFD0B-3B13-4B21-9A8E-8F71D407D685
Material examined. Holotype, female, SRI LANKA: Sigiriya, 7°57’ N, 80°46’ E, 18.iii.1999, coll. C. J. Burwell ( AIMB). GoogleMaps
Description. Holotype, female, length of body 2.3 mm, of fore wing 1.6 mm.
Head. Antenna with 16 antennomeres, subapical antennomeres not broadened, shorter than basal antennomeres, apical antennomeres narrow ( Fig. 1A View FIGURE 1 ); third antennomere as long as fourth; third, fourth and terminal antennomeres 3.7 ×, 3.7 × and 2.5 × longer than wide, respectively; head transverse, in dorsal view roundly contracted behind eyes ( Fig. 1E View FIGURE 1 ); OOL: OD: POL= 2.3: 1.0: 1.8; longitudinal diameter of eye 1.5 × height of temples; vertex coarsely longitudinally striate-rugose ( Fig. 1E View FIGURE 1 ); frons distinctly concave, transversely striate-rugose, smooth posteriorly with midlongitudinal carina ( Fig. 1C View FIGURE 1 ); occiput longitudinally striate-rugose ( Fig. 1E View FIGURE 1 ); temple longitudinally striate ( Fig. 1F View FIGURE 1 ); face transversely reticulate-rugose ( Figs 1B, D View FIGURE 1 ); clypeus moderately punctate, raised medially ( Fig. 1D View FIGURE 1 ); length of malar space 2.3 × basal width of mandible.
Mesosoma. Length of mesosoma 1.4 × its height; pronotum rugose-reticulate laterally, smooth posteriorly ( Fig. 1F View FIGURE 1 ); mesoscutum areolate-rugose ( Fig. 2A View FIGURE 2 ); notauli impressed as large pits ( Fig. 2A View FIGURE 2 ); transverse suture distinct, deep ( Fig. 2A View FIGURE 2 ); scutellar sulcus divided by five carinae ( Figs 2A–B View FIGURE 2 ); scutellum rugose, sparsely setose, with crenulate groove laterally ( Figs 2A–B View FIGURE 2 ); mesopleuron evenly convex, coarsely reticulate-rugose, setose ( Fig. 1F View FIGURE 1 ); metanotum crenulate with distinct midlongitudinal carina ( Fig. 2B View FIGURE 2 ); propodeum with medial and lateral tubercles, coarsely reticulate-rugose, with inverted Y-shaped carina, transverse carina distinct and complete ( Fig. 2B View FIGURE 2 ).
Wings. Fore wing hyaline apical half ( Fig. 2F View FIGURE 2 ); length of fore wing 2.4 × its width; length of marginal cell 1.3 × pterostigma; vein 2-Rl present, indistinct ( Fig. 2F View FIGURE 2 ); vein r as long as 3-SR ( Fig. 2F View FIGURE 2 ); r: 3-SR: SRl = 1.0: 1.0: 3.5; SRl straight; parastigma distinctly swollen ( Fig. 2F View FIGURE 2 ); 1-CU1: 2-CU1= 1.0: 4.4; vein CUlb present ( Fig. 2F View FIGURE 2 ).
Legs. Hind coxa smooth, with dense short setae ( Figs 2D–F View FIGURE 2 ); hind femur robust; length of hind femur, tibia and basitarsus 3.4 ×, 3.6 × and 4.3 × their maximum width respectively; mid and hind tibia with numerous short, pointed spines on apical half.
Metasoma. Metasomal carapace elongate-oval in dorsal view with spine like protuberance, coarsely reticulate-rugose, without midlongitudinal carinae basally ( Fig. 2C View FIGURE 2 ); length of carapace 2.1 × its maximum width in dorsal view; carapace without undulating lamella laterally ( Figs 2D–E View FIGURE 2 ); ventral cavity closed apically; ovipositor short, slender ( Fig. 2D View FIGURE 2 ) and the ovipositor sheath 0.08 × as long as fore wing, 0.3 × as long as hind tibia.
Colour. Black except eyes, ocelli grey, basal antennomeres yellow; apical antennomeres, maxillary and labial palps, tegula, wing veins, pterostigma, legs brownish yellow to dark brown.
Male. Unknown.
Biology. Unknown.
Distribution. Sri Lanka.
Etymology. The species is named after the collection locality ‘Sigiriya’.
Comparative diagnosis. The new species comes closer to Chelonus (Areselonus) spinigaster Ahmad & Ghramh, 2018 described from India. Apart from the differences mentioned in the key, the new species differs from the latter in having OOL 1.2 × POL (1.5 × in C. (A.) spinigaster ), F8–F11 slightly longer than wide (as long as wide in C. (A.) spinigaster ), terminal antennomere 2.5 × as long as wide (2.0 × in C. (A.) spinigaster ), mesosoma 1.4 × as long as high (1.2 × in C. (A.) spinigaster ), coxae reddish brown (blackish brown in C. (A.) spinigaster ).
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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