taxonID	type	description	language	source
06098C96CDAC5C0C839F4DE1FB418DF5.taxon	description	Figs 1, 2, 3	en	Ranjith, Avunjikkattu Parambil, Quicke, Donald L. J., Chansri, Kittipum, Butcher, Buntika A. (2025): Chelonastichus Ranjith & Quicke, gen. nov. (Hymenoptera, Eulophidae, Tetrastichinae) from Thailand: the first eulophid with a metasomal carapace. Journal of Hymenoptera Research 98: 499-507, DOI: 10.3897/jhr.98.144864
06098C96CDAC5C0C839F4DE1FB418DF5.taxon	description	Description. Female, holotype. Length 2.6 mm. Head. Eye setose (Figs 1 A – E, 2 E); F 1 slightly shorter than F 2 (Fig. 2 E); face smooth and shiny (Figs 1 B, C); malar space with sparse setae (Fig. 1 E); scrobes shallowly impressed, smooth (Fig. 1 B). Mesosoma. Axillae finely reticulate (Fig. 1 F). Mesoscutellum finely strigose associated with indistinct reticulations (Fig. 1 F). Propodeum with weak reticulation throughout, with several anteriorly diverging carinae originating from posterior margin (Fig. 2 B). Ratios. Head: w / l (dorsal view) 2.9; w / l (frontal view) 1.3; POL / OOL 1.8; posterior ocellus w / POL 0.6; head w / mss w 1.2; mouth w / MS 0.5; MS / HE 0.7; scape l / HE 0.7; distance toruli to anterior ocellus / toruli to mouth margin 1.4; flg + ped l / mss w 1.3; scape l / w 4.3; F 1 l / w 1.3; F 2 l / w 1.8; F 3 l / w 1.6; clava l / w 4.6; ped l / F 1 l 1.3; F 1 l / F 2 l 0.9; F 1 l / F 3 l 0.9; F 1 l / clava l 0.4; F 2 l / clava l 0.4; F 3 l / clava l 0.4; F 1 w / ped w 1.1; antennal spicule l / C 3 l 0.2. Mesosoma: l / h 1.5; l / w 1.9; midlobe msc l / sct l 1.1; dorsellum l / ppd l 0.5; sct l / w 0.9; CC l / w 13.0; CC l / MV l 0.65; MV l / SV l 5.0; metafemur l / w 4.5; metatibia l / w 6.5. Metasoma: petiole l / w 0.5; gaster l / w 2.0; gaster l / mss l 1.3; Gt 1 l / w 0.6; Gt 5 l / w 1.1. Colour. Body yellow except eyes and ocelli reddish, antennal clava brownish orange, Gt 2 – 4 brown.	en	Ranjith, Avunjikkattu Parambil, Quicke, Donald L. J., Chansri, Kittipum, Butcher, Buntika A. (2025): Chelonastichus Ranjith & Quicke, gen. nov. (Hymenoptera, Eulophidae, Tetrastichinae) from Thailand: the first eulophid with a metasomal carapace. Journal of Hymenoptera Research 98: 499-507, DOI: 10.3897/jhr.98.144864
06098C96CDAC5C0C839F4DE1FB418DF5.taxon	distribution	Distribution. Thailand.	en	Ranjith, Avunjikkattu Parambil, Quicke, Donald L. J., Chansri, Kittipum, Butcher, Buntika A. (2025): Chelonastichus Ranjith & Quicke, gen. nov. (Hymenoptera, Eulophidae, Tetrastichinae) from Thailand: the first eulophid with a metasomal carapace. Journal of Hymenoptera Research 98: 499-507, DOI: 10.3897/jhr.98.144864
06098C96CDAC5C0C839F4DE1FB418DF5.taxon	etymology	Etymology. The species is named after Dr Christer Hansson, Lund University, Sweden for his outstanding work on Eulophidae.	en	Ranjith, Avunjikkattu Parambil, Quicke, Donald L. J., Chansri, Kittipum, Butcher, Buntika A. (2025): Chelonastichus Ranjith & Quicke, gen. nov. (Hymenoptera, Eulophidae, Tetrastichinae) from Thailand: the first eulophid with a metasomal carapace. Journal of Hymenoptera Research 98: 499-507, DOI: 10.3897/jhr.98.144864
B89DEA070D175AE9A13044610B7CEEE8.taxon	description	Figs 1, 2, 3	en	Ranjith, Avunjikkattu Parambil, Quicke, Donald L. J., Chansri, Kittipum, Butcher, Buntika A. (2025): Chelonastichus Ranjith & Quicke, gen. nov. (Hymenoptera, Eulophidae, Tetrastichinae) from Thailand: the first eulophid with a metasomal carapace. Journal of Hymenoptera Research 98: 499-507, DOI: 10.3897/jhr.98.144864
B89DEA070D175AE9A13044610B7CEEE8.taxon	type_taxon	Type species. Chelonastichus hanssoni Ranjith & Quicke, sp. nov.	en	Ranjith, Avunjikkattu Parambil, Quicke, Donald L. J., Chansri, Kittipum, Butcher, Buntika A. (2025): Chelonastichus Ranjith & Quicke, gen. nov. (Hymenoptera, Eulophidae, Tetrastichinae) from Thailand: the first eulophid with a metasomal carapace. Journal of Hymenoptera Research 98: 499-507, DOI: 10.3897/jhr.98.144864
B89DEA070D175AE9A13044610B7CEEE8.taxon	description	Description. Female. Head. Antennae attached slightly below middle of frons, halfway between anterior ocellus and mouth margin; scape not reaching to upper level of vertex (Fig. 1 B); pedicel stout (Figs 1 E, 2 E); antenna with two anelli and three funiculars, and three clavomeres with a weak constriction between C 1 and C 2 (Fig. 2 E). Head with malar sulcus complete and straight (Figs 1 E, 2 E); without subocular fovea and genal carina (Figs 1 E, 2 E); clypeal margin convex without teeth (Fig. 1 B, C); mandible bidentate, upper tooth wide, lower tooth acute (Fig. 1 B, C); frons shiny, transversely striae antero-laterally associated with fine reticulations and with transverse carina medially (Fig. 1 B, D); vertex finely reticulate with more or less complete transverse carina, rest of vertex unevenly sculptured (Fig. 1 D); occipital margin rounded (Fig. 1 D). Mesosoma. Pronotum with long setae, distinctly reticulated and shiny, without transverse carina (Fig. 1 D, F). Mesoscutum reticulated with a distinct median groove in anterior 2 / 3 rd; with one pair of long and strong adnotaular setae posteriorly (Fig. 1 F). Notauli complete without crenulations (Fig. 1 F). Axillae advanced by half their length in front of transscutal articulation (Fig. 1 F). Mesoscutellum slightly convex in lateral view; with indistinct submedian grooves in posterior half; with sublateral grooves; with four pairs of setae sublaterally and a single pair of setae antero-medially; frenal groove present, wide and crenulated (Figs 1 F, 2 A). Dorsellum smooth and shiny, without median carina or groove (Fig. 2 B). Propodeum with a wide and short fovea just behind dorsellum and a complete and strong narrow median carina that expands to a triangular shape posteriorly; without paraspiracular carinae; spiracles large, rounded and not covered by a flap; callus with three setae; plica distinct in apical half of propodeum (Fig. 2 B). Wings. Fore wing entirely hyaline (Fig. 2 F); with four setae on the dorsal surface of a submarginal vein (Fig. 3 D, E); postmarginal vein absent (Figs 2 F, 3 F); costal cell very narrow, 13.0 × as long as wide (Figs 2 F, 3 D, E); speculum open (Figs 2 F, 3 D, E); stigmal vein with four companiform sensillae (Fig. 3 F); posterior margin of hind wing with long setae (Fig. 3 E). Legs. Coxae with weak reticulation (Fig. 1 A). Metasoma. Petiole transverse, with irregular sculpture, smooth medially (Fig. 2 B). Gaster 2.0 × as long as wide, setose (Figs 1 A, 2 C, D, 3 A – C). Gt 1 smooth faintly reticulated, sparsely setose laterally (Fig. 2 D); Gt 2 – 4 faintly reticulated with transverse rows of setae (Fig. 2 C, D); Gt 5 modified into a carapace, strongly reticulate without interspaces, setose (Figs 1 A, 2 C, D, 3 A – C); Gt 6 – 7, strongly reticulate and retracted under Gt 5 (Fig. 3 A, B). Gt 7 produced into a triangular process posteriorly (Fig. 3 B). Ovipositor sheaths setose throughout (Fig. 3 A – C). Female hypopygium reaching half the length of gaster, acute in lateral view (Fig. 3 A, C).	en	Ranjith, Avunjikkattu Parambil, Quicke, Donald L. J., Chansri, Kittipum, Butcher, Buntika A. (2025): Chelonastichus Ranjith & Quicke, gen. nov. (Hymenoptera, Eulophidae, Tetrastichinae) from Thailand: the first eulophid with a metasomal carapace. Journal of Hymenoptera Research 98: 499-507, DOI: 10.3897/jhr.98.144864
B89DEA070D175AE9A13044610B7CEEE8.taxon	distribution	Distribution. Oriental region (Thailand).	en	Ranjith, Avunjikkattu Parambil, Quicke, Donald L. J., Chansri, Kittipum, Butcher, Buntika A. (2025): Chelonastichus Ranjith & Quicke, gen. nov. (Hymenoptera, Eulophidae, Tetrastichinae) from Thailand: the first eulophid with a metasomal carapace. Journal of Hymenoptera Research 98: 499-507, DOI: 10.3897/jhr.98.144864
B89DEA070D175AE9A13044610B7CEEE8.taxon	etymology	Etymology. The genus name derived from a combination of a generic name from the family Braconidae, ‘ Chelonus ’ because of the first instance of carapace-like metasoma in the family Eulophidae and ‘ astichus ’ from the subfamily name Tetrastichinae where this genus is provisionally included.	en	Ranjith, Avunjikkattu Parambil, Quicke, Donald L. J., Chansri, Kittipum, Butcher, Buntika A. (2025): Chelonastichus Ranjith & Quicke, gen. nov. (Hymenoptera, Eulophidae, Tetrastichinae) from Thailand: the first eulophid with a metasomal carapace. Journal of Hymenoptera Research 98: 499-507, DOI: 10.3897/jhr.98.144864
