Diglyphomorphomyia octoseta, Fan & Li, 2022

Fan, Jun-Jie & Li, Cheng-De, 2022, Four new species of Diglyphomorphomyia Girault (Hymenoptera, Eulophidae) from China, with a key to Chinese species, ZooKeys 1095, pp. 111-121 : 111

Diglyphomorphomyia octoseta sp. nov.

Figs 17-22

Type material.

Holotype, ♀ [NEFU; on card], China, Jiangxi Province, Yichun City, Guanshan National Nature Reserve, 29 VIII 2017, leg. Guang-Xin Wang and Wen-Jian Li, by yellow pan trapping. Paratype: 1♀ [on slide], same data as holotype.

Diagnosis.

The new species is easily distinguished from the other known members of the genus by the following combination of characters: Antenna with scape white, pedicel, F1-F3 pale yellow, clava brown except apex yellowish. Midlobe of mesoscutum punctate with four pairs of long setae. Propodeum with median carina bifurcate anteriorly and meeting a perpendicular lamina, anteromedially with two dorsal pits. Legs mostly white.

Description.

Female. Body length 2.2 mm, fore wing length 1.6 mm. Body pale yellow. Head yellowish-white. Antenna with scape white, pedicel, F1-F3 pale yellow, F4 and clava brown except apex yellowish. Mandibles yellow with teeth brown. Legs mostly white. Gaster mostly yellowish white, with a median stripe and lateral margins brown.

Head (Fig. 18 ) 1.4 × as wide as high in frontal view and 2.3 × as wide as long in dorsal view. Frons smooth to alutaceous with a row of setae along eye margin. Vertex smooth. POL 1.8 × OOL. Malar space 0.4 × eye height. Occiput weakly reticulate. Relative measurements (length: width): scape = 28: 5; pedicel = 9: 5; F1 = 14: 5; F2 = 11: 6; F3 = 11: 7; F4 = 11: 7; clava = 19: 7.

Mesosoma (Fig. 17 ). Midlobe of mesoscutum punctate with 4 pairs of long setae, lateral lobe of mesoscutum reticulate. Notauli ending laterad to inner angles of axilla. Axillae weakly reticulated and separated from each other. Scutellum longer than mesoscutum with 2 pairs of long setae, sublateral grooves meet posteriorly. Propodeum smooth, with a median carina bifurcating anteriorly and meeting a perpendicular lamina, anteromedially with two dorsal pits; plicae distinct with a transverse carina joining outer margins; another transverse carina present anterior to spiracle; separated from metanotum by a distance as long as a diameter of spiracle; each propodeal callus with seven long setae.

Wings. Fore wing (Fig. 19 ) 2.4 × as long as wide. Relative measurements (length): SMV = 63; MV = 57; PMV = 25; STV = 22. Hind wing (Fig. 20 ) 3.9 × as long as wide.

Metasoma (Fig. 17 ). Gaster ovate, 1.5 × as long as wide and as long as mesosoma. Ovipositor exserted beyond apex of gaster.

Male. Unknown.

Host.

Unknown.

Distribution.

China (Jiangxi).

Etymology.

Latin: octo = eight; and refers to the midlobe of mesoscutum with four pairs of long setae.

Remarks.

Diglyphomorphomyia octoseta is similar to D. kairali Narendran & Girish Kumar in sharing a propodeum with a median carina bifurcating anteriorly and meeting a perpendicular lamina, but can be separated from the latter by the following combination of characters: fore wing hyaline without infuscation (fore wing with brown infuscation a short distance below STV in D. kairali ); antenna with scape white, pedicel and F1-F3 pale yellow, clava brown except apex yellowish (antenna brownish black with scape and pedicel pale brownish yellow in D. kairali ); midlobe of mesoscutum with four pairs of long setae (three pairs of long setae in D. kairali ).

Figures

Figures 17 - 22. D. octoseta sp. nov., female, holotype 17 habitus in dorsal view 18 head in frontal view 19 fore wing 20 hind wing 21 habitus in lateral view 22 antenna. Scale bars: 100 μm.