Review of the subgenus Larsoceraphron Dessart, 1981 of the genus Ceraphron Jurine, 1807 (Hymenoptera, Ceraphronidae) with the description of a new species from Thailand Ghafouri Moghaddam, Mostafa Salden, Tobias Heidari Latibari, Minoo Butcher, Buntika A. Journal of Hymenoptera Research 2025 2025-06-03 98 579 602 Ghafouri Moghaddam, Salden & Butcher Ghafouri Moghaddam, Salden & Butcher 2025 Insecta Ceraphronidae Ceraphron Animalia Hymenoptera Arthropoda species chularoipaad sp. nov. Larsoceraphron   Fig. 1 A – K   Type material examined.    Holotype• female,  Thailand, Nan, Pua, Phu Kha, Doi Phu Kha National Park 1,  19°12.236'N, 101°04.667'E,  1341 m, hill Evergreen Forest, Malaise trap, Global Malaise Program,  19. viii. 2023, B. A. Butcherleg., MGM 0388and BBTH 6665–24(for DNA Barcoding),  CUMZ-HYM 00393,  CUMZ.   Paratype• female,  Thailand, Chiang Mai, Fang, Pong Nam Ron, Doi Pha Hom Pok National Park, Kiew Lom viewpoint,  20°3.49'N, 99°8.552'E,  2174 m, Malaise trap,  14–21. xi. 2007, P. Wongchaileg., T 6203,  QSBG.   Diagnosis. Eyes medium-sized (Fig. 1 C, D); anterior ocellar fovea ventrally extended into facial sulcus, reaching dorsal margin of antennal scrobe (Fig. 1 C, E); occipital carina straight (Fig. 1 D, E); slightly elongated areolae between eyes and ocellar foveae of lateral ocelli (Fig. 1 C, E); scape 1.23 × the pedicel and 1 stto 4 thflagellomere combined (Fig. 1 A); notauli present in anterior one third (Fig. 1 F); mesoscutum and - scutellum with no distinct areolae (Fig. 1 F, G); metafemur slightly thickened, length 3.8 × its maximum width (Fig. 1 A); basal longitudinal carinae on the syntergite covering half of the width of the anterior syntergite (Fig. 1 G, H).   Figure 1.   Ceraphron( Larsoceraphron) chularoipaad sp. nov., female holotype from Thailand ( CUMZ) Ahabitus and antenna, lateral view Bfore and hind wing Chead, dorsofrontal view Dhead, lateral view Ehead, dorsal view Fmesosoma, dorsal view Gposterior mesosoma and anterior syntergum, dorsal view Hsyntergum, dorsal view Ihead and mesosoma, lateral view Jmetasoma, lateral view Kposterior metasoma, dorsal view.   Description  (Female).Body length 2.6 mm.   Colour.Head and mesosoma black, coxae black to dark brown (Fig. 1 A, C – G); metasoma, apex of scape, pedicel, and thickened four apical flagellomeres dark brown, base of scape, other flagellomeres, and legs brown (Fig. 1 A, J, K); palpi yellow (Fig. 1 A); fore wing disc slightly infuscated, hind wings virtually transparent (Fig. 1 B); wing venation light brown (Fig. 1 B).   Head.Slightly longitudinal in frontal view with medium long malar distance (Fig. 1 C); lateral margin of toruli raised; width of the head slightly wider than the maximum width of the mesosoma, densely pubescent (Fig. 1 A, I); eyes medium-sized, covered with erect setae (Fig. 1 C – E); slightly crenulate ocular impressions along the inner margin of the eye (Fig. 1 C, E); slightly elongated areolae between eyes and ocellar foveae of lateral ocelli (Fig. 1 C, E); median ocellus diameter 1.2 × LOL (lateral ocellar line) (Fig. 1 C, E); occipital carina straight, with lateral part slightly posteriorly protruding (Fig. 1 D, E); anterior ocellar fovea elongated and ventrally extended into facial sulcus, reaching dorsal margin of antennal scrobe (Fig. 1 C, E); intertorular sclerite and clypeus with pubescence (Fig. 1 C); interocular distance 0.4 × head width (Fig. 1 C); antennae with four apical flagellomeres distinctly thickened (Fig. 1 A); scape 1.23 × the pedicel and 1 stto 4 thflagellomere combined (Fig. 1 A); pedicel about equal to the length of the 1 stflagellomere (Fig. 1 A); 4 thand 5 thflagellomeres about equal in length and width, width of 4 thflagellomere 1.11, and 5 th1.26 × their length, respectively (Fig. 1 A); the 6 th– 8 thflagellomeres not transverse, width of 6 thflagellomere 0.78, 7 th0.69, and 8 th0.38 × their length, respectively (Fig. 1 A).   Mesosoma.Mesoscutum transverse, width 2.0 × its length (from dorsal view) (Fig. 1 F); notauli incomplete, present in anterior one third (Fig. 1 F); mesoscutum and - scutellum with no distinct areolae (Fig. 1 G); scutoscutellar sulci converge medially, adjacent to transscutal articulation (Fig. 1 G); mesometapleuron with longitudinal striations in dorsal two thirds, smooth in ventral one third (Fig. 1 I); lateral propodeal projections distinctly long and oriented posteriorly, tip of the projections amber-coloured (Fig. 1 G, H); median propodeal projection overhangs the anterior margin of the metasoma with its apical half, with slightly rounded tip from dorsal view (Fig. 1 G, H).   Legs.Metacoxa with few longitudinal striations (Fig. 1 A, I); metafemur slightly thickened, length 3.8 × its maximum width (Fig. 1 A).   Metasoma.Six basal longitudinal carinae on the syntergite covering half of the width of the anterior syntergite (Fig. 1 G, H); anterolateral syntergite with row of setae as long as basal longitudinal carina (Fig. 1 J, K).  Male.Unknown.   Host. Unknown.   Distribution. Oriental ( Thailand).   Etymology. The specific epithet  chularoipaadis derived from “ Chula ”, referring to Chulalongkorn University, and “ roi paad ”, which means “ one hundred and eight ” in Thai, commemorating the 108 thanniversary of Chulalongkorn University in 2025. The name is treated as a noun in apposition. 5170699302 hill Evergreen Forest 2023-08-19 Malaise trap CUMZ Global Malaise Program & B. A. Butcher Thailand Pua 1341 19.203934 Doi Phu Kha National Park 1 1 101.07778 Phu Kha MGM 0388, BBTH 6665-24, CUMZ-HYM 00393 1 1 Nan holotype 5170699301 2007-11-14 2007-11-21 2007-11-14 Malaise trap QSBG P. Wongchai Thailand Fang 2174 20.058167 Doi Pha Hom Pok National Park, Kiew Lom viewpoint 9 99.14253 Pong Nam Ron T 6203 1 1 Chiang Mai paratype