Ooctonus lapen Triapitsyn, 2010

Triapitsyn, Serguei V., 2010, Revision of the Palaearctic species and review of the Oriental species of Ooctonus (Hymenoptera: Mymaridae), with notes on extralimital taxa 2381, Zootaxa 2381 (1), pp. 1-74 : 65-67

Ooctonus lapen Triapitsyn , sp. n.

( Figs 126–134 )

Type material. Holotype female [ CNCI] on slide: NEPAL. DHAWALAGIRI, Goropani Pass , 2850 m, 5.x.1983, A. Smetana, screen sweeping. The holotype lacks most of one antenna except for the scape and one forewing . Paratype: NEPAL. DHAWALAGIRI (DHAULAGIRI) [Zone], PARBAT [District], Ridge E of Goropani Pass (also spelled as Ghoropani, Gorepani , or Ghorepani ), 3100 m, 7.x.1983, A. Smetana, I. Löbl [1 ♂ on slide, CNCI] .

Description. FEMALE. Head and mesosoma dark brown to black, petiole light brown, gaster brown to dark brown; scape and pedicel light brown, flagellum dark brown; legs light brown except metafemur and metatibia brown.

Antenna ( Fig. 126 ) with scape almost as long as clava, radicle 0.24x length of scape, remainder of scape 4.7x as long as wide, a little wider medially than basally, almost smooth; pedicel a little shorter than F1; all funicle segments much longer than wide and more or less subequal in length (F2–F5 a little longer and F6–F8 slightly shorter), F5, F7, and F8 each with 2 mps (remaining funicle segments without mps); clava 3.3x as long as wide, as long as combined length of F6–F8, with 7 mps.

Mesosoma ( Fig. 127 ) with pronotum very weakly sculptured, almost smooth; anterior half or so of mesoscutum with inconspicuous sculpture and its posterior half or so smooth, midlobe of mesoscutum with a long median groove about as wide posteriorly as width of a notaulus, anteriorly narrowing and extending to almost 0.7x length of mesoscutum; anterior scutellum with inconspicuous sculpture (the cells almost as large as on mesoscutum), posterior scutellum smooth, shining, metanotum smooth, shining, with posterior margin slightly, broadly rounded; propodeum ( Fig. 128 ) mostly smooth, with median carina much shorter than semioval median areole, lateral carinae almost parallel to median carina, extending to anterior margin of propodeum.

Forewing ( Fig. 129 ) 2.8x as long as wide; disc with a slight brownish tinge throughout (more so as a sinuate, narrow, brownish strip behind venation, also extending beyond venation along posterior margin to a little more than half length of the wing), densely setose but bare just behind base of submarginal vein, slightly truncate apically; longest marginal seta about 0.19x greatest width of wing. Hind wing ( Fig. 133 ) about 18x as long as wide; disc with a slight brownish tinge and densely setose throughout; longest marginal seta 2.5x greatest width of wing.

Pro- and mesocoxae smooth, metacoxa with weak reticulate sculpture.

Petiole 2.9x as long as wide, a little wider apically than basally, smooth, short (0.85x as long as metacoxa); ovipositor occupying about 0.9x length of gaster, slightly exserted beyond apex of gaster (by less than 0.1x own length), 1.2x length of metatibia.

Measurements (µm) of the holotype. Mesosoma: 480; petiole: 120; gaster: 584; ovipositor: 545. Antenna: radicle: 51; rest of scape: 158; pedicel: 58; F1: 76; F2: 85; F3: 82; F4: 79; F5: 80; F6: 70; F7: 73; F8: 70; clava: 220. Forewing: 1427:501; longest marginal seta: 94. Hind wing: 1009:55; longest marginal seta: 136. Legs (given as coxa, femur, tibia, tarsus): fore: 115, 260, 267, 303; middle: 106, 273, 400, 318; hind: 142, 276, 442, 324.

MALE. Similar to female except for the normal sexually dimorphic features and the following [body length is impossible to measure because of the way the detached head is slide-mounted]. Antenna ( Fig. 130 ) with scape plus radicle yellowish, 4.6x as long as wide, pedicel light brown, and flagellum dark brown; mesosoma as in Fig. 131 , propodeum as in Fig. 132 ; forewing ( Fig. 133 ) with strong brownish tinge particularly conspicuous (but uneven) behind and just beyond venation; hind wing 15x as long as wide, disc with a strong brownish tinge and very densely setose throughout; petiole much longer than in female (5.0x as long as wide), 1.2x as long as metacoxa; legs a little darker than in female, particularly hind leg brownish; genitalia as in Fig. 134 .

Diagnosis. Among the described species of Ooctonus , O. lapen sp. n. is characterized by the unique combination of the following features: the anterior half or so of mesoscutum with weak, inconspicuous reticulate sculpture and its posterior half or so smooth, and the midlobe of mesoscutum with a long median groove, about as wide posteriorly as width of a notaulus, anteriorly narrowing and extending to almost 0.7x length of mesoscutum.

Hosts. Unknown.

Etymology. The species name (a noun in apposition) is a reverse spelling of the name of its country of origin ( Nepal).

Figures

FIGURES 126–129. Ooctonus lapen ♀ (holotype): 126, antenna; 127, mesosoma; 128, dorsellum and propodeum; 129, wings.

FIGURES 130–134. Ooctonus lapen ♂ (paratype): 130, antenna; 131, mesosoma; 132, dorsellum and propodeum; 133, forewing; 134, genitalia.