Metaphycus corniae
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Ordo: Hymenoptera
Familia: Encyrtidae
Genus: Metaphycus
Name
Metaphycus corniae Wang & Li & Zhang, 2014 sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Holotype
China: ♀, Beijing, Haidian, 10.V.2013, Coll. S. A. Wu & W. C. Li (IZCAS).
Paratypes
8 ♀♀, 6 ♂♂, same as holotype; 30 ♀♀, Beijing, Chaoyang. 14.V.2013, Coll. X. Zhang (IZCAS).
Female
Body length 0.8–1.0 mm. Frontovertex brown, but between occipital margin to posterior ocelli orange, gena yellowish, unmarked; occiput dark brown; antenna (Fig. 70) with scape entirely black, only extreme base and apex white, dorsal margin white; basal half of pedicel black, apex white; F1–F4 blackish, F5–F6 yellowish; clava blackish, but extreme apex brown; pronotum white with a brown spot on each side, mesoscutum, axillae and scutellum pale orange, tegulae white with apex brown, metanotum and propodeum blackish; legs (Figs 74–76) yellowish, proximal tibiae and tarsi brownish, fore tibia and hind tibia with one dark brown ring, mid tibia with two dark brown rings; fore wing hyaline, venation yellow-brown; gaster dorsally black, ventrally white. Head 3–4× as wide as frontovertex, ocelli forming an acute angle of slightly less than 60°; posterior ocellus closer to occipital margin than eye; antenna with scape expanded, 2.0×–2.3× as long as broad; F1–F4 transverse and F5–F6 gradually increasing in size, F6 largest, linear sensilla present on F5–F6; clava 3-segmented, and apical very slightly oblique; mandible broad with three, subequal apical teeth; palpal formula 3-3 (Fig. 72); notaular lines incomplete and reaching about 0.6× across mesoscutum; fore wing venation and setation as in Fig. 73; cercal plate about in the 1/3 of gaster; ovipositor (Fig. 77) hardly exserted, 4–5× as long as gonostylus.
Relative measurements: HW 16, FV 5, FVL 9, POL 2.5, AOL 3.5, OOL 1, OCL 1.5, POD 1, AOD 1, EL 9, EW 7.5, MS 5.5, SL 7.5, SW 3.5, FWL 47.5, FWW 17.5, HWL 30, HWW 6, OL 13, GL 2.5, MT 15.
Male
Length 0.8–1.0 mm. Generally very similar to female but for relatively narrower scape, coloration of antenna, genitalia and solid clava. Antenna (Fig. 71) with scape 2.8–3.0× as long as broad, flagellum generally pale brown.
Host
Parthenolecanium corni (Bouché) on Fraxinus chinensis Roxburgh.
Distribution
China (Beijing) (Fig. 84).
Etymology
The new species named for its host “Parthenolecanium corni (Bouché)”.
Diagnosis
Scape entirely black, only extreme base and apex white, dorsal margin white (Fig. 70); fore and hind tibiae with one dark brown ring, but mid tibia with two dark brown rings (Figs 74–76); scape expanded, 2.2×–2.3× as long as broad; ovipositor hardly exserted, 4–5× as long as gonostylus (Fig. 77). This species is very similar to Metaphycus stanleyi. In Metaphycus corniae sp. n. the ovipositor is about 0.9× as long as mid tibia, and 4–5× as long as gonostylus (Fig. 77). In Metaphycus stanleyi ovipositor is about 0.7× as long as mid tibia, about 3× as long as gonostylus.
Original Description
- Wang, Y; Li, C; Zhang, Y; 2014: A taxonomic study of Chinese species of the insidiosus group of Metaphycus (Hymenoptera, Encyrtidae) ZooKeys, 378: 49-81. doi
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