Erythmelus (Erythmelus) burtik S. Triapitsyn, 2007

Triapitsyn, Serguei V., Berezovskiy, Vladimir V., Hoddle, Mark S. & Morse, Joseph G., 2007, A review of the Nearctic species of Erythmelus (Hymenoptera: Mymaridae), with a key and new additions to the New World fauna, Zootaxa 1641 (1), pp. 1-64 : 24-25

Erythmelus (Erythmelus) burtik S. Triapitsyn , sp. n.

( Figs 26, 27 )

Type material. Holotype female on slide [ CNCI]: CANADA. ONTARIO, Hamilton , 31.vii.1980, M. Sanborne . Paratypes: CANADA. ONTARIO, Hamilton : 13.vii.1980, M. Sanborne [1 female on point, CNCI] ; 30.vi–7.vii.1981, M. Sanborne [1 female on point, CNCI] ; 14–15.vii.1981, M. Sanborne [1 female on slide, UCRC] .

Description. FEMALE (holotype and paratypes). Body length 1024–1273 µm. Body mostly dark brown except base of gaster whitish to light brown, hypopygium brown, and midlobe of mesoscutum with a slightly lighter (brown) transverse submedian stripe. Antenna brown except pedicel light brown. Procoxa, mesocoxa, base of metacoxa, femora, protibia, mesotibia, and most of metatibia brown; metacoxa whitish distally; base of metatibia and tarsi yellow to light brown.

Vertex transversely striate, with a few short setae.

Antenna ( Fig. 26 ) with short setae. Scape 3.8–4.0 x as long as wide; pedicel much longer than F1; all funicular segments longer than wide; F1 the shortest funicular segment, F2 a little shorter than F3, F3 a little shorter than F4, F2–F4 each shorter than F5 or F6, F5 about as long as F6 (F5 slightly longer); F1–F4 without longitudinal sensilla, F5 and F6 each with 2 longitudinal sensilla; clava 3.8–4.0 x as long as wide, usually with 6 longitudinal sensilla but with 7 such sensilla on one antenna in the holotype.

Mesosoma. Mesoscutum wider than long, its midlobe finely longitudinally striate and with 1 pair of strong setae. Axillar seta about as long as 1/3 length of scutellum. Scutellum slightly shorter than mesoscutum, posterior scutellum finely longitudinally striate. Dorsellum broadly angulate posteriorly.

Wings. Forewing ( Fig. 27 ) 4.1–4.2 x as long as wide; blade slightly infumate behind submarginal vein, otherwise hyaline, with unevenly distributed setae only in the distal 1/3; longest marginal cilia 1.2–1.3 x greatest width of wing. Hind wing 17–18 x as long as wide, almost as long as forewing; blade slightly infumate distally; longest marginal cilia 4.1–4.3 x greatest wing width.

Metasoma. Petiole about 2 x wider than long. Gaster longer than mesosoma; ovipositor with a very large basal loop, up to 4/5 length of gaster, markedly exserted beyond apical gastral tergum (by 1/3 to 1/2 of ovipositor length, depending on the size and configuration of its basal loop: the shorter the latter is, the more the ovipositor is exserted), and about 2.5 x length of metatibia.

Measurements of holotype (in µm). Gaster 677; ovipositor 750. Antenna: scape (including radicle) 182; pedicel 55; F1 28; F2 43; F3 55; F4 61; F5 89; F6 87; clava 173. Forewing 780:188; longest marginal cilia 248. Hind wing 769:42; longest marginal cilia 182.

MALE. Unknown.

Etymology. The specific name (a noun in apposition) is an arbitrary combination of letters.

Diagnosis. Member of the clavatus species group. Erythmelus (E.) burtik differs from E. (E.) mudrila sp. n., to which it is most similar, primarily by the female antenna that has relatively long funicular segments (funicle length: clava length ratio 2.1–2.2:1), whereas in E. (E.) mudrila the funicular segments are relatively short (funicle length: clava length ratio about 1.7:1).

Hosts. Unknown.

Figures

FIGURES 26, 27. Erythmelus (E.) burtik (female, holotype). 26. Antenna. 27. Forewing. Scale bars = 0.1 mm.