Psyllaephagus chinensis Zu & Wang 2023, sp. nov.
Creators: name: Wang, Haiyang
name: Zhang, Chenghui
name: Xue, Hao
name: Xi, Chunxiang
name: Yang, Zening
name: Zu, Guohao
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Encyrtidae
Psyllaephagus
Psyllaephagus chinensis

description: 7. Psyllaephagus chinensis Zu & Wang, sp. nov. (Figs. 6A–F)
Type material. Holotype. ♀ [on slide], CHINA, Tianjin City, Tianjin Academic Agriculture Sciences, 39°6′14″N, 117°3′32″E, 29.06.2021 – 13.7.2021, Guohao Zu, Malaise trapping.
Paratypes. 4 ♀, 1 ♁ [3 ♀, 1 ♁ on slides], the same data as holotype (TJAU).
Diagnosis. Female. Length, excluding ovipositor 1.60–1.90 mm. Predominately dark brown. Head, mesoscutum, scutellum, and axilla with bright green metallic reflections, tegulae brown, yellow at the base; legs pale yellow, except all coxa and apical 1/5 of hind femora black; frontovertex 0.38–0.43× head wide, with distinct reticulate sculpture, ocelli forming a right–angled triangle; scape slightly broadened, 3.48–3.69× as long as broad, F1 shorter than pedicel, clava strongly obliquely truncate apically; fore wing hyaline, 2.47–2.63× as long as wide, ovipositor 1.52–1.68× as long as mid tibia, slightly exserted. Male (length, 1.2 mm). Very similar to female, but pedicel dark brown; frontovertex 0.51× head wide; scape 2.25× as long as wide; fore wing 2.21× as long as wide; aedeagus 1.31× as long as mid tibia.
Description. Female Holotype. Length, 1.84 mm (excluding ovipositor). Head with metallic luster, frontovertex with yellow–green metallic reflection, genae with blue–purple metallic luster; scape and pedicel of antennae dark brown, but the apical 1/10 yellowish brown, funicle dark brown, gradually becoming paler from F1 to F6, clava yellowish brown; mesosoma with green metallic luster and short white setae; wings hyaline; tegulae brown, yellow at base; legs yellowish white, but all coxae black with a blue–green metallic luster, and hind femora (except apical 1/5) black; metasoma with a copper green metallic luster.
Head (Fig. 7A) in frontal view, 1.45× as wide as long, frontovertex 0.40× head wide, with distinct reticulate sculpture, ocelli forming an angle of 90°, occipital margin rounded, OCL about 0.24× the diameter of posterior ocellus, OOL about 0.11× the diameter of posterior ocellus; antennal torulus with its dorsal margin well above lower margin of eyes. Antennal scape (Fig. 7B) slightly broadened, about 3.35× as long as broad, pedicel 1.78× as long as wide, 1.79× as long as F1, funicle with F1–F5 longer than wide, F6 subquadrate, clava three–segmented, 2.73× as long as wide and strongly obliquely truncate apically, longer than F4–F6 combined, funicle with linear sensillae on all funicular segments. Mandible with two acute teeth and a broad truncation. Measurements (μm): HH, 380; HW, 480; FV, 193; OD, 35; POL, 115; OOL,13; OCL, 28; AOL, 70; EL, 280; MS, 108; length (and width): radicle, 45; scape, 193 (57.5); pedicel, 63 (35); F1, 35 (28); F2, 40 (30); F3, 43 (30); F4, 38 (30); F5, 40 (35); F6, 44 (43); clava, 150 (55).
Mesosoma (Fig. 7C). Mesoscutum and scutellum with fine reticulate sculpture, mesoscutum 0.74× as long as wide and 1.29× as long as scutellum. Fore wing (Fig. 7D) 2.50× as long as wide, marginal vein slightly longer than wide, and 0.77× as long as postmarginal vein, linea calva not interrupted and closed by one line of setae posteriorly, hind wing (Fig. 7E) 3.41× as long as wide. Mid tibial spur (Fig. 7F) 0.21×as long as mid tibia and shorter than basitarsus. Measurements (μm): FWL, 1125; FWW, 450; submarginal vein, 400; MV, 25; PMV, 33; SV, 75; HWL, 750; HWW, 220; MT, 400; mid tibial spur, 85; mid basitarsus, 125.
Metasoma (Fig. 7C) 1.30× as long as mesosoma, ovipositor 1.58× as long as mid tibia, slightly exserted, third valvula 1.41× as long as mid tibial spur. Measurements (μm): OL, 630. [MT, 400]
Male. Length 1.20 mm. Very similar to female in appearance except for relatively less dense setae in basal cell of fore wing and structure of antennae and genitalia. Head (Fig. 8A) in frontal view, 1.44× as wide as long frontovertex 0.51× head wide; antennal (Fig. 8B) scape broadened, about 2.25× as long as wide; all funicle segments slightly longer than wide; fore wing (Fig. 8D) about 2.21× as long as wide; hind wing (Fig. 8E) 3.17× as long as wide; mid tibial spur (Fig. 8F) 0.28× as long as mid tibia and shorter than corresponding basitarsus. Metasoma (Fig. 8C) shorter than mesosoma; aedeagus about 1.31× as long as mid tibia.
Host. Cacopsylla chinensis Yang & Li (1981) (Hemiptera: Psyllidae).
Etymology. The species epithet refers to the name of its host.
Comments. Psyllaephagus chinensis sp. nov. is most similar to P. brevicalcaratus Li, 2010 and P. eugenii (Trjapitzin, 2015), but differs by the characters given in Table 2.
description: Published as part of Wang, Haiyang, Zhang, Chenghui, Xue, Hao, Xi, Chunxiang, Yang, Zening & Zu, Guohao, 2023, Encyrtidae (Hymenoptera: Chalcidoidea) from China, with the description of two new species, pp. 237-251 in Zootaxa 5361 (2) on pages 244-247, DOI: 10.11646/zootaxa.5361.2.5, http://zenodo.org/record/10150921