Cheiloneurus guangxiensis Zu, 2024

Wang, Haiyang, Cui, Wenyu, Xi, Chunxiang, Cao, Xinyu, Li, Weiqiong & Zu, Guohao, 2024, A taxonomic study of Cheiloneurus Westwood (Hymenoptera, Encyrtidae) from China, ZooKeys 1198, pp. 143-172 : 143

Cheiloneurus guangxiensis Zu sp. nov.

Figs 78-83

Type material.

Holotype. ♀, [on slide]; China - Guangxi, Qinzhou, Beibu Gulf University; 21°53'53"N, 108°36'56"E; 24 m elev.; 14-24 Dec. 2019; Wen-Quan Zhen leg.; by Malaise trapping; TJAU-GX-CHE-053. Paratype. 1♀; same date as holotype; TJAU-GX-CHE-054.

Description.

Female. Holotype. Length, 1.51 mm (excluding ovipositor). Head with yellow to yellowish brown and metallic-green luster, basal half of antennal scape brown, apical half white, and dorsal margin brown; pedicel brown; F1 brown with dorsal margin white, F2-F4 lower margin brown and dorsal margin white, F5 lower margin slightly brown and dorsal margin white, F6 white and small part of lower margin brown; clava dark brown. Mesosoma yellow; leg white, nearly transparent, basal third of mid tibia and apical fifth of hind femora brown. Metasoma dark brown, with metallic-blue luster, but slightly yellowish brown in middle and lower part.

Head (Fig. 78 ) in frontal view, length equal to width, frontovertex 0.14 × head width; ocelli forming an angle of 40°, OCL about 1.67 × diameter of posterior ocellus, OOL about 0.10 × the diameter of posterior ocellus; antennal torulus with its dorsal margin well above lower margin of eye; eye length about 1.77 × as long as malar space. Antennal (Fig. 79 ) scape flattened and expanded, about 2.37 × as long as width, pedicel about 2.26 × as long as wide, funicle 6-segmented, F1 longer than width, F2-F3 subquadrate, F4-F6 wider than long, clava 3-segmented, 1.98 × as long as wide, longer than F3-F6 combined, funicle with linear sensillae on F3-F6. Mandible with three acute teeth. Measurements (μm): HH, 460; HW, 460; FV, 63; OD, 30; POL, 23; OOL,3; OCL, 50; AOL, 43; EL, 270; MS, 153; length (and width): radicle, 45; scape, 225 (95); pedicel, 88 (39); F1, 38 (35); F2, 35 (35); F3, 38 (38); F4, 45 (48); F5, 48 (55); F6, 46 (63); clava, 206 (103).

Mesosoma (Fig. 80 ). Mesoscutum densely setose; mesoscutum and scutellum with finely reticulate sculpture, mesoscutum 0.60 × as long as wide, scutellum 0.90 × as long as wide and with a tuft of bristles at apex. Fore wing (Fig. 81 ) 2.70 × as long as wide, apical half of submarginal vein strongly curved, marginal vein longer than width, and 4.91 × as long as postmarginal vein, linea calva not interrupted and open posteriorly, hind wing (Fig. 82 ) 4.32 × as long as width. Mid tibial spur (Fig. 83 ) 0.35 × as long as mid tibia and longer than basitarsus. Measurements (μm): FWL, 960; FWW, 355; submarginal vein, 350; MV, 113; PMV, 23; SV, 45; HWL, 800; HWW,185; MT, 450; mid tibial spur, 163; mid basitarsus, 140.

Metasoma (Fig. 80 ) slightly longer than mesosoma, ovipositor 1.51 × as long as mid tibia, distinctly exserted. Measurements (μm): OL, 680. [MT, 450].

Male. Unknown.

Host.

Unknown.

Etymology.

The specific name refers to the province where the type locality is located.

Diagnosis.

The new species is similar to C. chinensis Shi, Wang, Si & Wang, 1994 but differs from C. chinensis as follows: frontovertex 0.14 × head width (0.20 × in chinensis); scape flattened and expanded, about 2.37 × as long as wide (scape 3 × as long as wide in chinensis); F6 white and small part of the lower margin brown (F6 black in chinensis); clava longer than F3-F6 combined (nearly equal length F3-F6 combined in chinensis); legs off white nearly transparent, mid tibia basal one-third and hind femora apical one-fifth brown (legs brownish yellow except fore tibia; apical third of mid feroma, outer margin of hind feroma and tibia brown in chinensis).

Figures

Figures 78 - 83. Cheiloneurus guangxiensis sp. nov. ♀ holotype 78 head 79 antenna 80 mesosoma and metasoma 81 fore wing 82 hind wing 83 legs. Scale bars: 100 μm.