Zhijilingia tettigonia Xu, Liu et He, 2022

Xu, J. - Y., Liu, Y. - J. & He, Z. - Q., 2022, A new monotypic genus of the subfamily Tetrastichinae (Hymenoptera: Chalcidoidea: Eulophidae) from China, Far Eastern Entomologist 454, pp. 7-15 : 10-12

Zhijilingia tettigonia Xu, Liu et He , sp. n.

http://zoobank.org/NomenclaturalActs/ 01CEB5D9-BDCE-4C5D-A59F-109AE88F6824

Figs 2 , 3

COI gene number of NCBI: OM089661

28S gene number of NCBI: OM141004

TYPE MATERIAL. Holotype: ♀, China: Sichuan, Yaan, Tianquan, Erlangshan , Labahe ,

30.08 o N, 102.42 o E, 18.VII 2020, coll. He Zhu-Qing ( ECNU). Paratypes: 3 ♀, same data as holotype ( ECNU) .

view; C – head, dorsal view; D – apex of gaster showing cercal setae, lateral view; E –

thorax, dorsal view.

DESCRIPTION. Female. Body length 1.62–1.94 mm. Head ( Fig. 2 A–C ): POL about 1.8

times as long as OOL. Antennal torulus placed above level of ventral margin of eye. Malar sulcus present and slightly curved. Scape reaching to vertex, but not extending over vertex.

Antenna ( Fig. 3 D–F ): with 3 anelli and 4 funicular segments. All funicular segments slender and longer than broad. F1, F2 and F3 are almost the same length; F4 the shortest (F1:

F2: F3: F4 = 0.9: 1.0: 1.0: 0.85). Only one clava segment; clava segment 5.0 times as long as broad, nearly as long as funicular segments, clava with distinct terminal spine. Scape and pedicel without rasp-like reticulation.

habitus, lateral view; D – antenna; E – anelli; F – clava.

Thorax ( Fig. 2 E ): Mesosoma about 1.50 as long as broad in dorsal view. Mesoscutum without a median line; with 2 adnotaular setae. Scutellum with distinct submedian lines; 2

pairs of setae on scutellum, anterior pair of setae located below the middle. Dorsellum about

0.6 times as long as propodeum in dorsal view. Propodeum with a distinct median carina;

without paraspiracular carina. The whole rim of propodeal spiracle exposed. Callus with 2

setae.

Gaster ( Fig. 2 D ): Almost as long as head plus thorax. Apex of hypopygium extending about 0.17–0.21 length of gaster and reaching almost up to the posterior margin of G4.

Ovipositor sheaths slightly exserted. Cercus with 4 setae; Cercal setae unequal in length, with one being distinctly longer than the others and sinuate.

Wing ( Fig. 3 A–B ): Submarginal vein with 2–3 dorsal setae; Postmarginal vein absent.

Costal cell: marginal vein: stigmal vein = 2.9–3.3: 4.7–5.3: 1.0. Forewing with cubital line of setae starting at the level of basal vein. Subcubital line of setae reaching the level of basal vein.

Coloration. Body mainly black, dorsum of thorax mainly black with slightly metallic coloration. Head black with slightly metallic coloration. Scape mainly brownish yellow, but other antennal segments brown. Gaster mainly brownish yellow. Legs mainly brownish yellow. Wing veins light brown.

Male. Unknown.

tettigonia sp. n. on forewing.

BIOLOGY. The new species were collected from the forewing of two female katydids

Prohimerta (Anisotima) dispar (Bey-Bienko, 1951) belonging to subfamily Phaneropterinae

( Orthoptera : Tettigoniidae ). There was no individual found on that part of males ( Fig. 4 ). We also collected other katydids in same place such as Tettigonia chinensis Willemse, 1933 ,

Phyllomimus sinicus Beier, 1954 , Qinlingea brachystylata (Liu & Wang, 1998) , Paraxantia szechwanensis Liu, 2014 , Neocyrtopsis fallax Wang & Liu, 2012 , but no chalcid wasp was found.

ETYMOLOGY. The name tettigonia refers to its parasitizing katydid eggs.

DISTRIBUTION. China (Sichuan).

Figures

Fig. 2. Female of Zhijilingia tettigonia sp. n. A – head, lateral view; B – head, frontal

Fig. 3. Female of Zhijilingia tettigonia sp. n. A – wing; B – submarginal vein; C –

Fig. 4. Prohimerta dispar (Bey-Bienko, 1951). A – male; B – female with Zhijilingia