Idiotypa mariae Gregor, 1939

Chemyreva, Vasilisa G., Notton, David G. & Zaldívar-Riverón, Alejandro, 2021, Revision of Palaearctic Idiotypa (Hymenoptera, Diapriidae, Diapriinae, Spilomicrini), Zootaxa 4966 (2), pp. 127-144 : 130-132

Idiotypa mariae Gregor, 1939

( Figs 3, 4 , 6, 8, 10 )

Idiotypa marii Gregor, 1939: 133 .

Idiotypa mariae Gregor, 1939: 134 .

Redescription. Female (Lectotype). Body length 1.9 mm; fore wing length 1.6 mm; antenna length 1.3 mm.

Colour. Head, mandibles and A8‒A12 dark brown; mesosoma and petiole contrasting orange brown; metasoma, legs, A1‒A7 yellowish brown; palps yellow.

Head in lateral view 1.1 times higher than long, in dorsal view weakly transverse, 1.1 times as wide as long and narrower than mesosoma, with long scattered setae. Ocelli not large; distance between posterior ocelli twice the smallest ocellar diameter. Occipital flange narrow, without sculpture. Face smooth, with scattered long setae. Tentorial pits tiny. Malar sulcus distinct and complete. Malar space 0.76 times as high as height of eye. Clypeus semi-circular, bare and smooth, weakly convex, epistomal sulcus indistinct. Pleurostomal distance as wide as half of head width. Mandible with two subequal teeth. Eye oval, pubescent, 0.4 times as high as height of head. Antennal shelf in frontal view sculptured, with row of short erect setae, with depression between toruli on frontal surface.

Antennae with non-abrupt clava. Scape cylindrical, slightly curved, with apical rim simple. A9‒A12 flattened on ventral side with well-defined MGS brush; in lateral view connection between A8‒A12 situated dorsally; A7‒ A12 separated by deep gaps. Ratios of length to width of antennomeres in dorsal view: A1 22:5; A2 7:4; A3 6:3; A4 4:3; A5 4:3; A6 4:4.5; A7 4:5; A8 5:6; A9 6:7; A10 6:8; A11 6:8; A12 8:8.

Mesosoma in lateral view 1.65 times longer than high, in dorsal view 1.38 times longer than wide. Pronotum smooth; pronotal cervical area and anterior margin of pronotum pubescent. Mesopleuron with deep sulcus under tegulae, mesepimeral sulcus incomplete and smooth medially; sternaulus absent. Mesoscutum short and transverse, 1.8 times as wide as long, covered with scattered erect setae. Notaulus full, deep and wide, sculptured at bottom and broadened posteriorly. Humeral sulcus shallow and complete. Scutellum with three pits anteriorly, median pit the largest. Axilla smooth, with rare scattered setae. Axillar depression pubescent, with rugulose sculpture. Lateral scutellar pits absent. Posterior scutellar pits subequal, small and deep, lateral rim sculptured. Metascutellum narrow, with long setae, three longitudinal keels (median keel low, lateral keels high) and distinct transverse carina developed between lateral keels. Propodeum in dorsal view strongly transverse, 2.7 times as wide as long, entirely pubescent. Median propodeal keel projecting into low spine directed backward. Propodeum with posterior margin in dorsal view not arcuate. Lateral keels of propodeum forming very short plical process. Nuchal area with pilosity and longitudinal keels.

Forewing. Costal and submarginal veins tubular and pigmented, basal vein pale. Marginal vein elongate, postmarginal vein gradually narrowed apically. Stigmal vein twice longer than wide of marginal vein and broadened apically. Fore wing 2.5 times longer than largest wide.

Metasoma. Petiole as long as wide, cylindrical, with longitudinal striae dorsally and pubescence ventrally. Base of T2 with deep median and lateral notches; area between the notches striate; posteriorly T2 smooth and bare; T3‒T5 narrow, smooth, with rare erect setae. T6 and T7 pubescent. S2 with lateral groove, smooth, covered with scattered long setae more dense inside groove.

Variation (female). Body length 1.1–1.7 mm. Metasoma yellow to brown; mesosoma yellowish brown to dark brown, always paler than head; head black to dark brown; A1‒А5 brown to yellow, А8‒А12 yellowish brown, rarely dark brown but always paler than head; venation dark brown to yellow. А5 slightly transverse or subquadrate. Lateral scutellar pits sometimes divided by additional carina into two parts. Head weakly wider or equal to width of mesosoma. Mesepimeral sulcus absent completely or only medially.

Male. Body length 1.4–2.6 mm; wing length 1.8–2.3 mm; antenna length 2.0‒2.2 mm. Similar to female, but differs mainly in antennal structures and metasoma proportions. Antenna filiform, yellowish brown to black brown, А1 and А2 always faintly paler than remainder antennomeres. Pubescence of A3‒A13 semidecumbent and sparse. Scape and pedicel yellowish brown, flagellum brown. Ratios of length to width of antennomeres in dorsal view: A1 20:5; A2 5:4.5; A3 10:4; A4 10:4; A5 9:4; A6 9:4; A7 10:4; A8 10:4; A9 10:4; A10 11:3; A11 11.5:3; A12 12:3; A13 15:3. A3 equal to or longer than A4. A4 keel extends to apex of segment, but not reaching its base.A5‒A13 elongate, cylindrical. Apical segment long and slender, pointed apically.

Figures

FIGURES 1‒4. Idiotypa maritima (Haliday, 1833) (1, 2) and I. mariae Gregor, 1939 (3, 4). 1, 3) lateral habitus (scale bar = 0.5 mm); 2, 4) mesosoma in lateral view (scale bar = 0.2 mm).

FIGURES 5‒10. Idiotypa maritima (Haliday, 1833) (5, 7, 9) and I. mariae Gregor, 1939 (6, 8, 10). 5, 6) antenna of female in ventral view (scale bar = 0.5 mm); 7, 8) A2‒A6 of male in dorsal view (scale bar = 0.2 mm); 9, 10) A2‒A6 of male in lateral view (scale bar = 0.2 mm).