Chelonus (Parachelonus) expeditious, 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.7917745 |
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persistent identifier |
https://treatment.plazi.org/id/5D2C650F-892C-42C8-816D-A114C02040C2 |
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taxon LSID |
lsid:zoobank.org:act:5D2C650F-892C-42C8-816D-A114C02040C2 |
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treatment provided by |
Plazi |
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scientific name |
Chelonus (Parachelonus) expeditious |
| status |
sp. nov. |
Chelonus (Parachelonus) expeditious sp. nov.
( Figures 19–20 View FIGURE 19 View FIGURE 20 )
urn:lsid:zoobank.org:act:5D2C650F-892C-42C8-816D-A114C02040C2
Material examined. Holotype, female, INDIA: Arunachal Pradesh, Yingku , 28°45’95 N, 94°88’471 E, 2756 m.a.s.l., 7.v.2022, coll. A.P. Ranjith ( AIMB) GoogleMaps . Paratypes, 1 male with same data as holotype.
Description. Holotype, female, length of body 3.6 mm, of fore wing 3.1 mm.
Head. Antenna with 23 remaining antennomeres, apical antennomeres not broadened, shorter than basal antennomeres ( Fig. 19A View FIGURE 19 ); third antennomere as long as fourth; third and fourth antennomeres 2.8 ×, 3.1 × longer than wide, respectively; head transverse ( Fig. 19B View FIGURE 19 ), in dorsal view roundly contracted behind eyes ( Fig. 19C View FIGURE 19 ); OOL: OD: POL= 1.7: 1.5: 1.0; longitudinal diameter of eye 1.2 × height of temples; vertex transversely striate ( Fig. 19C View FIGURE 19 ); frons distinctly concave, smooth medially with a complete midlongitudinal carina ( Fig. 19C View FIGURE 19 ); occiput transversely striate ( Fig. 19C View FIGURE 19 ); temple longitudinally striate ( Fig. 19D View FIGURE 19 ); face transversely striate, densely setose in lateral view ( Fig. 19B View FIGURE 19 ); clypeus flat and densely punctate, smooth and shining ( Fig. 19B View FIGURE 19 ); length of malar space 2.6 × basal width of mandible.
Mesosoma. Length of mesosoma 1.5 × its height; lateral pronotum rugose anteriorly, smooth posteriorly ( Figs 19D–E View FIGURE 19 ); mesoscutum areolate-rugose, without longitudinal depressions medially ( Fig. 19F View FIGURE 19 ); notauli impressed as large pits ( Fig. 19F View FIGURE 19 ); transverse suture distinct, deep ( Fig. 19F View FIGURE 19 ); scutellar sulcus divided by seven carinae ( Fig. 19F View FIGURE 19 ); scutellum punctate medially without longitudinal rugae, sparsely setose, with crenulate groove laterally ( Fig. 19F View FIGURE 19 ); mesopleuron evenly convex, coarsely reticulate-rugose, setose ( Fig. 19E View FIGURE 19 ); metanotum crenulate with distinct midlongitudinal carina ( Fig. 20A View FIGURE 20 ); propodeum with medial and lateral tubercles, coarsely reticulate-rugose, with large pentagonal areola delineated by carina medially, area near to median areola smooth, transverse carina distinct, complete ( Fig. 20A View FIGURE 20 ).
Wings. Fore wing infuscate subbasally and subapically ( Fig. 20E View FIGURE 20 ); length of fore wing 2.7 × its width; length of marginal cell 1.3 × pterostigma; vein 2-Rl present ( Fig. 20E View FIGURE 20 ); vein r 1.5 × as long as 3-SR ( Fig. 20E View FIGURE 20 ); r: 3-SR: SRl = 1.5: 1.0: 6.6; SRl more or less curved ( Fig. 20E View FIGURE 20 ); parastigma distinctly swollen ( Fig. 20E View FIGURE 20 ); 1-CU1: 2-CU1= 1.0: 3.0; vein CUlb present ( Fig. 20E View FIGURE 20 ).
Legs. Hind coxa smooth, densely short setose ( Fig. 20B View FIGURE 20 ); hind femur robust ( Fig. 20B View FIGURE 20 ); length of hind femur, tibia and basitarsus 3.1 ×, 4.6 × and 5.1 × their maximum width, respectively; mid and hind tibia with numerous short, pointed spines apical half ( Fig. 19A View FIGURE 19 ).
Metasoma. Metasomal carapace elongate-oval in dorsal view, coarsely reticulate-rugose, with a pair of midlongitudinal carinae basally, with median longitudinal carina running half-length of propodeum ( Fig. 20C View FIGURE 20 ); length of carapace 2.2 × its maximum width in dorsal view; carapace without undulating lamella laterally ( Fig. 20B View FIGURE 20 ); ventral cavity closed apically ( Fig. 20D View FIGURE 20 ); ovipositor long, slender ( Fig. 20D View FIGURE 20 ) and the ovipositor sheath 0.07 × as long as fore wing, 0.2 × as long as hind tibia.
Colour. Black except eyes brownish red, antennomeres, pterostigma, hind femur apical half, mid and hind tibia basally and apical 1/3 rd, ovipositor sheath brown, scape and pedicel, maxillary and labial palps, tegula, fore leg, hind leg except tibia apical 1/3 rd, hind leg except femur apical half, tibia apical 1/3 rd, metasomal carapace basal half yellow.
Male. Same as female.
Biology. Unknown.
Distribution. India (Arunachal Pradesh).
Etymology. The species is named after the Siang expedition, a reassessment of biodiversity exploration held in 2022 in the Siang Valley, Arunachal Pradesh.
Comparative diagnosis. This new species comes close to C. (P.) komsingensis sp. nov. in having body colouration sculpture. However, this new species can be distinguished from C. (P.) komsingensis sp. nov. by the following characters; lateral pronotum smooth posteriorly (rugose in C. (P.) komsingensis sp. nov.), propodeum with pentagonal areola medially (with irregular areola medially in C. (P.) komsingensis sp. nov.), area near to median areola smooth (rugose in C. (P.) komsingensis sp. nov.), third antennomere 2.8 × as long as wide (4.0 × in C. (P.) komsingensis sp. nov.) and hind basitarsus long, 5.1 × as long as wide (3.3 × in C. (P.) komsingensis 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.
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