Zaischnopsis fumosa 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 : 203-205

Zaischnopsis fumosa Peng & Xiang , sp. nov.

( Figs 12–20 , 41 , 45 )

Type material. Holotype ♀ ( FAFU): Nanling natural reserve, Guangdong Prov., 3.X.2013, Shen Jie . Paratypes: Nanling natural reserve, Guangdong Prov., 5.X.2013, Ji Shuqin (1♀ FAFU) ; Tien Fong Mts., Hainan Prov., 17.V.1983, Bouček ( NHMUK010353715 ) (1♀ BMNH) .

Description of holotype. FEMALE. Length excluding ovipositor sheath 4.9 mm. Head with green metallic luster, upper face slightly coppery green, vertex more coppery purple ( Figs 13, 15 ); setae of face, gena and occiput white, parascrobal region with two rows of white setae ( Fig. 13 ), setae of vertex white ( Fig. 14 ). Maxillary and labial palpi black. Antennal scape black with coppery-green metallic luster, pedicel and flagellum black, tip of clava brown ( Fig. 17 ). Pronotum with coppery, purple and green metallic luster, setae dark brown ( Fig. 16 ); mesoscutum with greenish-blue metallic luster, and with white hair-like setae ( Fig. 16 ); prepectus with frontal surface black to dark brown with metallic purple luster, lateral surface brown ( Fig. 12 ); tegula dark brown with brown setae ( Fig. 16 ); mesopectus with dark purple metallic luster, entirely setose with long white setae extending to level of about apex of tegula; acropleuron black with dark blue and purple metallic lusters ( Fig. 12 ); scutellar- axillar complex black with green metallic luster, setae dark brown to black ( Fig. 16 ). Fore wing infuscate beyond level of parastigma and gradually lightened distally, but with one narrow hyaline cross-band behind apex of marginal vein with light-brown setae ( Fig. 19 ). Legs with femora and tibiae dark brown; metatibia dark brown, with white hair-like setae; protarsus brown, mesotarsus pale yellowish brown except rows of pegs and spur black, metatarsus pale yellowish brown to white ( Figs 12, 20 ). Metanotum and propodeum black with purple and blue metallic lusters; propodeum with a patch of white hair-like setae mesad to spiracle and callar region setose lateral to spiracle ( Fig. 18 ). Gaster elongate-lanceolate, dark brown with metallic luster; apex of syntergum light brown, apex of ovipositor sheath brown ( Fig. 19 ).

Head in frontal view ( Fig. 13 ) 1.33× wider than high; in dorsal view ( Fig. 15 ) width 1.67× length, with interocular distance 0.20× head width and less than width of eye; in lateral view ( Fig. 14 ) 1.27× higher than long. Eye height 1.0× eye width in lateral view ( Fig. 14 ); distance between eyes below 3.10× distance between eyes above ( Fig. 13 ); malar space 0.42× eye height ( Fig. 14 ); distance between toruli greater than distance between torulus and clypeal margin, and greater than distance between torulus and orbit. OOL: POL: LOL: MPOD = 1: 4.5: 4: 4.5. Vertex coriaceous around ocelli and reticulate-rugose posteriorly ( Fig. 15 ); lower face finely reticulaterugose ( Fig. 13 ); gena longitudinally reticulate ( Fig. 14 ); parascrobal region very narrow; scrobal depression reticulate to transversely imbricate; interantennal region transversely reticulate ( Fig. 13 ). Scrobal depression deep ( Fig. 13 ), separated from anterior ocellus by distance equal to 0.7× diameter of anterior ocellus. Lower orbit above level of ventral margin of torulus. Antenna with scape foliaceously dilated ( Fig. 17 ); relative length (width) of scape 40(17); pedicel 11(6); 1 st to 8 th funiculars: 6(7), 15(7), 17(8), 21(10), 14(12), 10(12), 8(12), 7(12); clava 26(12).

Pronotum in dorsal view divided medially, pentagonal, reticulate ( Fig. 16 ). Mesoscutum almost flat but slightly convex anteriorly, lateral lobe carinate posteriorly ( Fig. 16 ). Scutellar-axillar complex flat, longitudinally, coarsely reticulate, with black setae; scutellum 1.78× longer than broad ( Fig. 16 ). Mesopectus reticulate anterior to acropleural sulcus and finely coriaceous posteroventrally, acropleuron with very fine longitudinally aligned coriaceous sculpture. Fore wing extended near apex of gaster, with SMV: MV: PMV: STV = 25: 32: 18: 7. Mesotibial spur shorter than basitarsus; mesotarsus with row of pegs on either side of basal four tarsomeres. Hind leg with basitarsus as long as following three tarsomeres combined ( Fig. 20 ). Propodeum with anterior margin broadly V-shaped ( Figs 18 , 45 , indicated by arrows); plical region comparatively broad, scabrous; callar region smooth and shiny ( Figs 18 , 45 ).

Gaster longer than mesosoma, elongate-lanceolate; Gt 1 and Gt 2 deeply V-like emarginate, Gt 3 and Gt 4 slightly emarginate, Gt 5 and Gt 6 convex, syntergum tapered to apex ( Fig. 41 ); ovipositor sheath exserted for very short distance, as long as 1/2 of basal metatarsomere ( Figs 12, 19 ).

Variation. Females vary in length from about 4.13–4.9 mm; head in dorsal view about 1.5-1.67× wider than long; scrobal depression separated from anterior ocellus by distance about 0.6-0.7× diameter of anterior ocellus; scutellum can be about 1.58× longer than broad. The color of the mesoscutum of the BMNH specimen is not as bright as in the holotype, and with more purple luster.

Distribution. CHINA: Guangdong, Hainan.

Remarks. The fore wing color of female of this new species is smoky gray, darker than for Z. candetibia and Z. tubatius , and the hyaline cross-band is very narrow, only about 1/6 that of the basal infuscate region. Of these three species, females of Z. fumosa are the only ones with white setae on the vertex.

In our key, Z. fumosa is separated from Z. magniscapus using the length of funiculars 2–4, but this described difference is based on Girault’s (1919) original description (funicles 2–4 equal, twice longer than wide) and might not be accurate.

Etymology. The species name is derived from the Latin word “ fumosus ”, which means smoky, and refers to the fore wing color.

Figures

FIGURES 12‒20. Zaischnopsis fumosa. 12, body, lateral; 13, head, frontal; 14, head, lateral; 15, head, dorsal; 16, mesosoma, dorsal; 17, antenna; 18, propodeum, dorsal (arrow points to broadly V-shaped anterior margin of propodeum); 19, fore wing and gaster; 20, hind leg, lateral.

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.