Acmopolynema shinbana S. Triapitsyn

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 : 23-25

Acmopolynema shinbana S. Triapitsyn & Berezovskiy, sp. n.

( Figs 32 –36)

Type material

Holotype female (on slide, AEI): MALAYSIA, Negri Sembilan, Pasoh Forest Reserve , 28.iii.1980, P. & M. Becker, forest gap.

Paratype: MALAYSIA: same data as holotype but 7.x.1979 [1 male on slide, UCRC] .

Description

FEMALE (holotype). Head and body dark brown to black except petiole as well as basal and distal gastral terga light brown. Scape, pedicel, and F1 light brown; F2–F5 brown, F6 and clava dark brown. Legs mostly light brown except metacoxa, metafemur and metatibia brown to dark brown.

Head with toruli close to upper eye margin and transverse trabecula. Mandible with 2 sharp teeth and 1 (upper) blunt tooth.

Length of antenna ( Fig. 32 ) about 1600. Scape with strong cross-ridges on inner surface, about 1.8 x as long as wide in lateral view; pedicel much shorter than F1; F2 a little shorter than F3, F4–F6 decreasing in length and slightly increasing in width, each shorter than F2; longitudinal sensilla on F5 (1) and F6 (1); clava large, long, about 3 x as long as wide, with 9 longitudinal sensilla.

FIGURES 35, 36. Acmopolynema shinbana (male, paratype). 35. Forewing. 36. Genitalia.

Mesosoma smooth. Pronotum entire, longer than mesoscutum, with at least 4 pairs of setae. Mesoscutum slightly wider than long, longer than scutellum. Axilla with a row of 5 foveae. Scutellum with row of frenal foveae. Propodeum ( Fig. 33 ) with a medial groove extending from anterior margin almost to the base of submedial carinae at posterior margin; submedial carinae not reaching anterior margin of propodeum.

Forewing ( Fig. 34 ) 3.7 x as long as wide; marginal vein with 1 dorsal macrochaeta; marginal fringe short, longest marginal cilia a little less than 1/5 greatest width of wing; blade slightly infumate with brown in distal 2/3; basal 1/3 of blade bare, remainder unevenly setose, most setae very short (modified setae of type F). Hind wing with blade hyaline; longest marginal cilia 2.8–2.9 x greatest width of blade.

Metacoxa and metafemur reticulate, remaining leg segments smooth. Protibia with 2 rows of 10 conical sensilla.

Petiole as long as metacoxa. Ovipositor very long, more than 9/10 length of gaster, markedly exserted beyond its apex (by about 3/10 of the total length of ovipositor); ovipositor length: metatibia length 1.8:1.

Measurements (holotype): Mesosoma: 861; mesoscutum: 273; scutellum: 206; petiole: 303; gaster: 861; ovipositor: 1187. Antenna: scape (excluding radicle): 112; pedicel: 85; F1: 148; F2: 218; F3: 248; F4: 161; F5: 127; F6: 121; clava: 394. Forewing: 1851/500; longest marginal cilia: 94. Hind wing: 1353/42. Legs (given as coxa, femur, tibia, tarsus): fore: 194, 470, 403, 555; middle: 182, 415, 491, 677; hind: 333, 485, 664, 720.

MALE (paratype). Similar to female except for the normal sexually dimorphic features such as antenna, genitalia (Fig. 36), and the following. Coloration of antennal segments as follows: scape dark brown, pedicel and F1 light brown, remainder of flagellum brown. Propodeum with medial groove extending from anterior margin to about middle of propodeum. Forewing (Fig. 35) slightly wider than in female, 3.4–3.5 x as long as wide; blade slightly less pigmented at apex, with longer setae.

Diagnosis

Possibly a member of the orientale species group. This is a very large species, whose female is about 2 mm long (body length of a dry specimen). It has a medial groove extending from anterior margin almost to the base of submedial carinae at posterior margin in female and to about the middle of propodeum in male. The female and male forewings are also peculiar and sexually dimorphic ( Figs 34 , 35, respectively). The female antenna has one longitudinal sensillum on each F5 and F6. The upper tooth of the mandible is blunt in both sexes.

Etymology

“Shinbana” (a noun in apposition) was a female name in the ancient Babylon, meaning "one who has beautiful teeth".

Figures

FIGURES 32–34. Acmopolynema shinbana (female, holotype). 32. Antenna. 33. Propodeum. 34. Forewing.