Zaischnopsis nivalinota Peng & Xiang, 2018

Peng, Lingfei, Xiang, Jiawei & Liu, Qifei, 2018, Three new species of Zaischnopsis Ashmead (Hymenoptera: Chalcidoidea: Eupelmidae) from Southern China, with redescription of Zaischnopsis tubatius (Walker), Zootaxa 4524 (2), pp. 200-212 : 205-207

Zaischnopsis nivalinota Peng & Xiang , sp. nov.

( Figs 21–29 , 42 , 46 )

Type material. Holotype ♀ ( FAFU): Longtangshan, Qingliangfeng , Zhejiang Prov., VII.2013, Malaise trap . Paratype: Longtangshan, Qingliangfeng , Zhejiang Prov., VIII.2013, Malaise trap (1♀ FAFU) .

Description of holotype. FEMALE. Length excluding ovipositor sheath 4.9 mm. Head with greenish-blue metallic luster, upper face more blue, vertex purple ( Figs 23, 25 ); setae of face, gena and occiput white, parascrobal region with two rows of white setae ( Fig. 23 ), setae of vertex dark brown ( Figs 23, 25 ). Maxillary and labial palpi dark brown to black ( Figs 23, 24 ). Antennal scape black with greenish-purple metallic luster, pedicel and flagellum dark brown, tip of clava light brown ( Fig. 24 ). Pronotum with coppery, purple and green metallic luster, setae dark brown to black ( Fig. 22 ); mesoscutum with greenish-blue metallic luster, and with white hair-like setae ( Fig. 22 ); prepectus with frontal surface dark brown with metallic purple luster, lateral surface brown ( Fig. 21 ); tegula dark brown with brown setae( Fig. 22 ); mesopectus bluish green, with long white setae linearly arranged along acropleural sulcus; acropleuron black with dark purple metallic luster ( Fig. 21 ); scutellar-axillar complex black with greenish-blue metallic luster, setae dark brown ( Fig. 22 ). Fore wing ( Fig. 28 ) infuscate beyond level of parastigma and gradually lightened distally, but with hyaline spot encompassing apex of marginal vein and base of stigmal vein with white setae ( Fig. 26 ). Legs with knee yellowish brown, femora and tibiae dark brown ( Fig. 21 ); basal half of dorsal margin of metatibia light brown to yellowish white ( Figs 21, 29 ), metatibia with white hair-like setae; protarsus brown, mesotarsus pale yellowish brown except rows of pegs and spur brown; metatarsus yellowish brown ( Figs 21, 29 ). Metanotum and propodeum dark brown with greenish-blue metallic luster; propodeum with a patch of white hair-like setae mesad to spiracle and callar region setose lateral to spiracle ( Fig. 27 ). Gaster elongate-lanceolate, brown with metallic luster ( Fig. 28 ); apex of syntergum dark brown, ovipositor sheath dark brown with apex brown ( Fig. 28 ).

Head in frontal view ( Fig. 23 ) 1.22× wider than high; in dorsal view ( Fig. 25 ) width 1.63× length, with interocular distance 0.17× head width and less than width of eye; in lateral view ( Fig. 24 ) with face convex, 1.40× higher than long. Eye height 1.0× eye width in lateral view ( Fig. 24 ); distance between eyes below 4.67× distance between eyes above ( Fig. 23 ); malar space 0.49× eye height ( Fig. 24 ); distance between toruli greater than distance between torulus and clypeal margin, and greater than distance between torulus and orbit. OOL: POL: LOL: MPOD = 1: 3.7: 6.5: 4.5. Vertex coriaceous around ocelli and imbricate posteriorly ( Fig. 25 ); lower face finely reticulaterugose ( Fig. 23 ); gena longitudinally reticulate ( Fig. 24 ); parascrobal region narrow; scrobal depression reticulate and transversely imbricate; interantennal region transversely reticulate ( Fig. 23 ). Scrobal depression deep, separated from anterior ocellus by distance equal to diameter of anterior ocellus. Lower orbit above level of ventral margin of torulus. Antenna with scape normal, not expanded ( Fig. 24 ); relative length (width) of scape = 40(8); pedicel 13(5); 1 st to 8 th funiculars: 4(5), 16(6), 18(7), 15(9), 12(10), 9(11), 8(12), 7.5(12); clava 23(13).

Pronotum in dorsal view divided medially, subtriangular, reticulate ( Fig. 22 ). Mesoscutum almost flat but slightly convex anteriorly, lateral lobe carinate posteriorly ( Fig. 22 ). Scutellar-axillar complex flat, longitudinally, coarsely reticulate, with dark brown setae; scutellum 1.32× longer than broad ( Fig. 22 ). Mesopectus meshlike reticulate, acropleuron with very fine longitudinally aligned coriaceous sculpture ( Fig. 21 ). Fore wing extended near apex of gaster, with SMV: MV: PMV: STV = 25: 29: 16: 9. Mesotibial spur shorter than basitarsus; mesotarsus with row of pegs on either side of basal four tarsomeres ( Fig. 21 ). Hind leg with basitarsus as long as following two tarsomeres combined ( Fig. 29 ). Propodeum with anterior margin broadly U-shaped ( Figs 27 , 46 , indicated by arrows); plical region narrow, reticulate; callar region smooth and shiny ( Figs 27 , 46 ).

Gaster longer than mesosoma, elongate-lanceolate ( Fig. 28 ); Gt 1 and Gt 2 V-like emarginate, Gt 3 and Gt 4 broadly U-like emarginate, Gt 5 shallowly emarginate, Gt 6 convex, syntergum tapered to apex; ovipositor sheath exserted for distance equal to length of basal metatarsomere ( Fig. 42 ).

Variation. The paratype is 4.6 mm in length; scrobal depression separated from anterior ocellus by a distance about 0.7× diameter of anterior ocellus; distance between posterior ocellus and compound eye is very narrow, OOL: POL: LOL: MPOD = 1: 7: 13: 12. The hyaline spot of the fore wing of the paratype is not as white as for the holotype, but more light brown, and the mesoscutum is darker green with less metallic luster.

Distribution. CHINA: Zhejiang.

Remarks. The fore wing color pattern resembles that of Z. stom ( Fig. 51 ), but the hyaline spot of Z. stom is triangular.

Etymology. The species name is from the Latin word “ nivalis ”, which means snowy, and the Latin word “ nota ”, which means a mark, in reference to the white spot behind the marginal vein.

Figures

FIGURES 21‒29. Zaischnopsis nivalinota. 21, body, lateral; 22, mesosoma, dorsal; 23, head, frontal; 24, head, lateral; 25, head, dorsal; 26, fore wing; 27, propodeum, dorsal (arrow points to broadly U-sharped anterior margin of propodeum); 28, gaster, dorsal; 29, tibia and tarsi of hind leg.

FIGURES 40‒43. Gaster. 40, Zaischnopsis candetibia; 41, Z. fumosa; 42, Z. nivalinota; 43, Z. tubatius.

FIGURES 44‒47. SEM images of propodeum. 44, Zaischnopsis candetibia; 45, Z. fumosa; 46, Z. nivalinota; 47, Z. tubatius. Arrows point to anterior margin of propodeum.

FIGURES 48‒52. Fore wing (from original drawings). 48, Zaischnopsis keralensis; 49, Z. biharensis; 50, Z. bathericus; 51, Z. stom; 52, Z. mampadicus.