Zaischnopsis candetibia Peng, 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 : 201-203

Zaischnopsis candetibia Peng , sp. nov.

( Figs 1–11 , 40 , 44 )

Type material. Holotype ♀ ( BMNH): Tien Fong Mts, Hainan Prov., 17.V.1983, Bouček ( NHMUK010353630 ) . Paratype: Danxian, Hainan Prov., 11.V.1983, Bouček ( NHMUK010353624 ) (1♀ BMNH) .

Description of holotype. FEMALE. Length excluding ovipositor sheath 5.0 mm. Head with greenish-blue metallic luster, upper face more bluish purple ( Fig. 5 ), vertex dark purple ( Fig. 6 ); setae of face, gena and occiput white, parascrobal region with one row of white setae ( Fig. 5 ), setae of vertex black ( Fig. 6 ). Maxillary and labial palpi dark brown ( Figs 4, 5 ). Antennal scape with dark green metallic luster, pedicel and flagellum dark brown ( Fig. 3 ). Pronotum with coppery, purple and green metallic luster, setae dark brown ( Fig. 7 ); mesoscutum with bluish-green metallic luster, and with white hair-like setae ( Fig.7 ); prepectus and tegula dark brown, tegula with brown setae ( Fig. 7 ); mesopectus with dark blue metallic luster, with long white setae along acropleural sulcus, extending to level of about middle of tegula; acropleuron black with dark blue and purple metallic luster; scutellaraxillar complex black with dark green metallic luster, setae dark brown to black. Fore wing ( Fig. 1 ) infuscate beyond level of parastigma and gradually lightened distally, but with one hyaline cross-band behind apex of marginal vein with white setae ( Fig. 10 ). Legs with femora and tibiae dark brown, except basal half of dorsal margin of metatibia white ( Fig. 8 ), metatibia with white hair-like setae; protarsus brown, mesotarsus pale yellowish brown except row of pegs and spur black, metatarsus pale yellowish brown ( Figs 1, 8, 9 ). Metanotum and propodeum black with bluish-green metallic luster; propodeum with a patch of white hair-like setae mesad to spiracle and callar region setose lateral to spiracle ( Fig. 2 ). Gaster elongate-lanceolate ( Fig. 40 ), dark brown or dark purple with metallic luster ( Figs 1, 11 ); apex of syntergum and ovipositor sheath pale yellowish brown ( Fig. 11 ).

Head in frontal view ( Fig. 5 ) 1.23× wider than high; in dorsal view ( Fig. 6 ) width 1.43× length, with interocular distance 0.19× head width and less than width of eye; in lateral view ( Fig. 4 ) 1.45× higher than long. Eye height 1.03× eye width in lateral view ( Fig. 4 ); distance between eyes below 3.95× distance between eyes above ( Fig. 5 ); malar space 0.42× eye height ( Fig. 4 ); distance between toruli greater than distance between torulus and clypeal margin, and greater than distance between torulus and orbit. OOL: POL: LOL: MPOD = 1: 6: 10: 8. Vertex coriaceous around ocelli and transversely imbricate posteriorly ( Fig. 6 ); lower face reticulate rugose ( Fig. 5 ); gena longitudinally reticulate ( Fig. 4 ); parascrobal region very narrow; scrobal depression transversely imbricate; interantennal region transversely reticulate ( Fig. 5 ). Scrobal depression deep ( Fig. 5 ), separated from anterior ocellus by distance equal to 1.1× diameter of anterior ocellus. Lower orbit above level of ventral margin of torulus. Antenna with scape foliaceously dilated ( Figs 3, 5 ); relative length (width) of scape 40(13); pedicel 13(7); 1 st to 8 th funiculars: 5(5), 18(5), 19(6), 25(8), 16(9), 13(10), 11(10), 9(11); clava 30(11).

Pronotum in dorsal view divided medially, pentagonal, transversely imbricate ( Fig. 7 ). Mesoscutum almost flat but slightly convex anteriorly, lateral lobe carinate posteriorly ( Fig. 7 ). Scutellar-axillar complex flat, coarsely longitudinally reticulate; scutellum 1.40× longer than broad ( Fig. 7 ). Mesopectus meshlike reticulate, acropleuron with very fine longitudinally aligned coriaceous sculpture. Fore wing extended near apex of gaster, with SMV: MV: PMV: STV = 25: 33: 17: 8. Middle leg with spur shorter than basitarsus ( Fig. 9 ); mesotarsus with row of pegs on either side of basal four tarsomeres. Hind leg with basitarsus as long as following two tarsomeres combined ( Fig. 8 ). Propodeum with anterior margin broadly V-shaped ( Figs 2 , 44 , indicated by arrows); plical region comparatively broad, coarsely reticulate; callar region smooth and shiny ( Figs 2 , 44 ).

Gaster longer than mesosoma ( Fig. 1 ), elongate-lanceolate ( Fig. 11 ); Gt 1 –Gt 3 deeply V-like emarginate, Gt 4 and Gt 5 slightly emarginate, Gt 6 convex, syntergum tapered to sharp apex ( Fig. 40 ); ovipositor sheath exserted for short distance, as long as 4/5 of basal metatarsomere.

Variation. The female paratype is 4.7 mm in length; scrobal depression separated from anterior ocellus by distance about 0.9× diameter of anterior ocellus.

Distribution. CHINA: Hainan.

Remarks. Females of this new species have a similar fore wing colour pattern ( Fig. 10 ) as those of Z. tubatius ( Fig. 34 ), Z. keralensis ( Fig. 48 ) and Z. mampadicus ( Fig. 52 ), but differ by the dorsal margin of the metatibia being white basally ( Fig. 8 ). Further, the tibial spur of Z. keralensis is yellow or pale yellow, Gt 3 is slightly emarginate and Gt 4 is evenly convex, whereas Z. candetibia has the mesotibial spur very dark brown to black, Gt 3 is deeply emarginate, and Gt 4 is slightly emarginate; the middle of the propodeum of Z. tubatius is very narrow ( Figs 36 , 47 ), whereas the middle of propodeum of Z. candetibia is broader ( Figs 2 , 44 ). The gaster of Z. mampadicus was described as about 1.8× longer than the mesosoma, whereas the gaster of Z. candetibia is only about 1.4× longer than the mesosoma.

Etymology. The species name is a combination of the Latin words “ candeo ” which means shining white, and “ tibia ”, in reference to the metatibia having a white margin basally.

Figures

FIGURES 1‒11. Zaischnopsis candetibia. 1, body, dorsal; 2, propodeum, dorsal (arrow points to broadly V-shaped anterior margin of propodeum); 3, antenna; 4, head, lateral; 5, head, frontal; 6, head, dorsal; 7, mesosoma, dorsal; 8, hind leg, lateral; 9, tibia and tarsi of midleg; 10, fore wing; 11, gaster, dorsal.

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 30‒39. Zaischnopsis tubatius. 30, head, frontal; 31, head, lateral; 32, head, dorsal; 33, antenna; 34, fore wing; 35, mesosoma, dorsal; 36, scutellar-axillar complex, dorsal; 37, hind leg, lateral; 38, gaster, dorsal; 39, propodeum, dorsal (arrow points to broadly convex 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.