Erythmelus (Erythmelus) mudrila 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 : 23-24

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

( Figs 24, 25 )

Type material. Holotype female on slide [ UCRC]: MEXICO. OAXACA, Yagul (ruins), 13.vii.1984, G. Gordh . Paratypes: USA. TEXAS: Cameron Co., 1 mi. S of Southmost Ranch, Southpoint Nursery, 5– 6.vii.1982, G.A.P. Gibson [1 female on point and 1 female on slide, CNCI]. Kimble Co. , 1 km S of Junction, Texas Tech University Centre , 16–17.x.1999, M. Yoder [1 female on slide, TAMU] .

Description. FEMALE (holotype and paratypes). Body length 860–1080 µm. Body mostly dark brown except base of gaster yellow to light brown, hypopygium brown, and occasionally borders of axilla and scutellum a little lighter; midlobe of mesoscutum with a slightly lighter (brown) transverse submedian stripe. Antenna brown. Procoxa, mesocoxa, base of metacoxa, femora, protibia, mesotibia, and most of metatibia brown; metacoxa distally, base of metatibia, and tarsi yellow to light brown.

Vertex transversely striate, with a few short setae.

Antenna ( Fig. 24 ) with short setae. Scape 3.7–4.1 x as long as wide; pedicel much longer than F1; all funicular segments longer than wide; F1 the shortest funicular segment, F2–F4 subequal in length and each shorter than F5 or F6, F5 about as long as F6; F1–F4 without longitudinal sensilla, F5 and F6 each with 2 longitudinal sensilla; clava 3.4–3.5 x as long as wide, with 6 longitudinal sensilla.

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 about as long as mesoscutum, posterior scutellum finely longitudinally striate. Dorsellum broadly angulate posteriorly.

Wings. Forewing ( Fig. 25 ) 4.3–4.6 x as long as wide; blade slightly infumate behind submarginal vein, otherwise hyaline, with unevenly distributed setae only in the distal 3/10; longest marginal cilia 1.2–1.3 x greatest width of wing. Hind wing 17–18 x as long as wide, as long as forewing; blade notably infumate distally; longest marginal cilia 3.8–4.6 x greatest wing width.

Metasoma. Petiole about 3 x wider than long. Gaster longer than mesosoma; ovipositor with a very large basal loop, usually the entire length of gaster, markedly exserted beyond apical gastral tergum (by 1/5 to 1/4 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 2.4–2.5 x length of metatibia.

Measurements of holotype (in µm). Mesosoma 394; gaster 573; ovipositor 606. Antenna: scape (including radicle) 157; pedicel 51; F1 23; F2 32; F3 33; F4 34; F5 61; F6 63; clava 145. Forewing 646:152; longest marginal cilia 191. Hind wing 646:36; longest marginal cilia 164.

MALE. Unknown.

Etymology. The specific name (a noun in apposition) is an ironic, humorous form of calling someone a too wise, overanalytical person in Russian.

Diagnosis. Member of the clavatus species group. Both E. (E.) mudrila and E. (E.) burtik sp. n. have the scape of the female antenna notably dilated in the middle (about 4 x as long as wide). Erythmelus (E.) mudrila differs from E. (E.) burtik by its female antenna, which has relatively short funicular segments (funicle length: clava length ratio about 1.7:1), whereas in E. (E.) burtik the funicular segments are relatively long (funicle length: clava length ratio 2.1–2.2:1).

Hosts. Unknown.

Figures

FIGURES 24, 25. Erythmelus (E.) mudrila (female, paratype, Kimble Co., Texas, USA). 24. Antenna. 25. Forewing. Scale bars = 0.1 mm.