Microterys tibetensis Li and Zhang, 2021

Li, Hong-Liang & Zhang, Yan-Zhou, 2021, Two new species of Microterys Thomson, 1876 (Hymenoptera: Encyrtidae) from Tibet, China, Zootaxa 4975 (2), pp. 379-388 : 384-386

publication ID	https://doi.org/ 10.11646/zootaxa.4975.2.9
publication LSID	lsid:zoobank.org:pub:11E8F2A5-3B67-48B5-8031-52F7E114A29C
DOI	https://doi.org/10.5281/zenodo.4925386
persistent identifier	https://treatment.plazi.org/id/CA2C87E6-A40B-1F55-FF4E-FF078C01FDCD
treatment provided by	Plazi
scientific name	Microterys tibetensis Li and Zhang
status	sp. nov.

Treatment

Microterys tibetensis Li and Zhang , sp. nov.

( Figs 10−17 View FIGURE 10 View FIGURES 11–17 )

Holotype. ♀ [on slide], Tibet, Motuo County, 9.VI.2020, Hong-Liang Li (deposited in IZCAS), reared from Saissetia sp. ( Hemiptera : Coccidae ) on Tetracera sarmentosa Vahl. ( Dilleniales : Dilleniaceae ). Paratypes. 3♀ [on slide], same data as holotype.

Diagnosis. Female. Body stout ( Fig. 10B View FIGURE 10 ), length about 1.51 mm (excluding ovipositor); head and thorax generally orange, gaster dark brown; scape nearly entirely black; pedicel and F1–F4 dark yellow brown, F5–F6 pale yellow; clava black; fore wing infuscate, with a nearly complete light-colored transverse band distad of stigmal vein in apical half; scape flattened and broadened, about 2.0× as long as broad, pedicel about 2× as long as broad, a little longer than F1; funicle with F1 to F4 longer than broad, F5 nearly as long as broad, F6 a little wider than long; fore wing about 2.4× as long as broad; ovipositor about 0.9× as long as mid tibia and hardly exserted; gonostylus about 0.57× as long as mid tibial spur. Among the known species of Microterys recorded in China and adjacent countries, Microterys tibetensis is similar to M. ouasii Singh & Hayat (2002) in general body coloration, antennal shape and ovipositor hardly exserted. Females of Microterys tibetensis can be separated from those of the latter by the combination of the scape about 2× as long as broad (about 2.5× in M. ouasii ), fore wing with a nearly complete light-colored transverse band distad of stigmal vein in apical half (with a small hyaline patch distad of stigmal vein in M. ouasii ), gonostylus about 0.28× length of second valvula (about 0.23× in M. ouasii ).

Description. Female. Holotype. Body stout ( Fig. 10B View FIGURE 10 ), length about 1.51 mm (excluding ovipositor); head orange; pronotum orange except for dark spot in the middle of anterior half, which is not visible in dorsal view, remainder of thorax generally orange except scutellum with longitudinal dark brown stripe in the middle and metanotum dark brown; propodeum dark brown; gaster dark brown; radicle yellow; scape nearly entirely black; pedicel and F1–F4 dark yellow brown, F5–F6 pale yellow; clava black ( Fig. 11 View FIGURES 11–17 ); fore wing ( Fig. 12 View FIGURES 11–17 ) infuscate, basally hyaline and with a nearly complete light-colored transverse band distad of stigmal vein in apical half. Legs ( Figs. 14, 15, 16 View FIGURES 11–17 ) generally yellow except apices of all tarsi dark brown.

Head. Head about 1.27× as wide as high in frontal view; frontovertex about 0.26× head width, with reticulate sculpture; ocelli forming an equilateral triangle; posterior ocellus distinctly closer to eye margin than to occipital margin; eye not reaching occipital margin, and with inconspicuous setae; antenna ( Fig. 11 View FIGURES 11–17 ) with scape distinctly flattened and broadened, about 2.0× as long as broad; pedicel about 2× as long as broad, a little longer than F1; funicle with F1 to F4 longer than broad, F5 nearly as long as broad, F6 a little wider than long (F1 1.8×, F2 1.3×, F3 1.2×, F4 1.1×, F5 1.0×, F6 0.8×); clava about 2.0× as long as broad. Relative measurements: HW 66, HH 52, FV 17, MS 25, AOL 8, POL 8, OOL 2, OCL 4, POD 5, EL 35, EW 26, RL 5, SL 24.5, SW 12, PL 8, PW 4, F1 7(4), F2 6.5(5), F3 6(5), F4 5.5(5), F5 6(6), F6 5.5(6.7), CL 18, CW 9.

Thorax. Mesoscutum with fine, scaly like sculpture; scutellum about 0.8× as long as wide, and slightly longer than mesoscutum; fore wing ( Fig. 12 View FIGURES 11–17 ) about 2.4× as long as wide; linea calva open posteriorly, uninterrupted, filum spinosum directed to middle part of stigmal vein; basal cell with a naked area at base; mid tibial spur ( Fig. 15 View FIGURES 11–17 ) about 0.33× as long as mid tibia and nearly as long as corresponding basitarsus. Relative measurements: MSL 26, MSW 52, STL 31, STW 41, FWL 170, FWW 70, MV 9.5, PMV 12, SV 14, MT 63, MTS 21, MBT 20.

Gaster distinctly longer than thorax; ovipositor ( Fig. 17 View FIGURES 11–17 ) about 0.9× as long as mid tibia, hardly exserted; gonostylus about 0.57× as long as mid tibial spur, and about 0.28× as long as second valvula. Relative measurements: OL 55, GL 12.

Variation. Very little in material available.

Host. Saissetia sp. ( Hemiptera : Coccidae ) on Tetracera sarmentosa Vahl. ( Dilleniales : Dilleniaceae ).

Etymology. The specific name refers to the type locality of the new species.