Acmopolynema bimaculatum Subba Rao 1989

TRIAPITSYN, SERGUEI V. & BEREZOVSKIY, VLADIMIR V., 2007, Review of the Oriental and Australasian species of Acmopolynema, with taxonomic notes on Palaeoneura and Xenopolynema stat. rev. and description of a new genus (Hymenoptera: Mymaridae), Zootaxa 1455 (1), pp. 1-68 : 22-23

Acmopolynema bimaculatum Subba Rao 1989

( Figs 29–31 )

Acmopolynema bimaculata Subba Rao 1989: 158 . Type locality: Periyar Animal Sanctuary , Kerala, India (holotype female [BMNH], not examined).

Acmopolynema bimaculatum Subba Rao : Hayat & Anis 1999: 301–303.

Type material examined Paratype female (on slide, BMNH): INDIA, Kerala, Periyar Animal Sanctuary , 5–15.x.1979, J.S. Noyes .

Additional material examined

INDONESIA, Sulawesi Island, Utara, Kotamobagu Gunung Muajat , 1760 m, v.1985, J.S. Noyes [1 female, BMNH] . TAIWAN, Pintung, Kenting National Park , 200–230 m, C.K. Starr, S.M. Wu: 5.v.1991 [2 females, 1 male, CNCI]; 5–11.v.1991 [2 males, CNCI]; 17–23.v.1991 [1 male, CNCI] .

Diagnosis

Member of the indochinense species group. The original description of A. bimaculatum and the redescription by Hayat & Anis (1999) are adequate for its recognition.

This species is characterized by a more or less uniform brown body color; a short female antenna (F1 slightly shorter than pedicel) with a large clava, which is longer than combined length of 3 preceding segments ( Fig. 29 ); an entire pronotum, with 2 pairs of dorsal and 3 pairs of lateral strong, blunt setae; a long, blunt axillar seta; absence of the frenal row of foveae on the scutellum (the frenal line is present); short "V"- shaped carinae on the propodeum ( Fig. 30 ); a characteristic female forewing ( Fig. 31 ) with two dark spots on the disc and usually two dorsal setae on the marginal vein; and the ovipositor which is not exserted beyond gastral apex but occupies almost the entire length of gaster (ovipositor length: metatibia length 1.1–1.2:1). In the Taiwanese specimens, the female has two dorsal macrochaetae on the forewing whereas the male (forewing hyaline, genitalia as in A. indochinense ) has only one. Acmopolynema bimaculatum is very close to A. indochinense , from which it differs mainly in the antennal and ovipositor features of the female (the funicle segments are relatively longer and ovipositor length: metatibia length is 1.7–1.9: 1 in A. indochinense ) as well as in the shape of the apical dark spot on the forewing, which is relatively more elongated. In addition, the strong, blunt seta on the axilla of A. bimaculatum is relatively longer than that of A. indochinense ; the metacoxa is brown in A. bimaculatum but pale or yellow in A. indochinense . All these distinguishing characters, however, are rather weak and could be within the range of the intraspecific variability of A. indochinense . More specimens are needed before any further decisions about the conspecificity of these two taxa are made.

Distribution India, Indonesia [new record], and Taiwan [new record].

Figures

FIGURES 29–31. Acmopolynema bimaculatum (female). 29. Antenna (Taiwan). 30. Propodeum (Taiwan). 31. Forewing (paratype).