Ooctonus, Haliday, 1833

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 : 14-15

Key to the European species of Ooctonus (both sexes)

[Male of O. novickyi Soyka is unknown]

1 Female: antenna clavate, with flagellum 9-segmented ......................................................................................... 2

– Male: antenna filiform, with flagellum 11-segmented ......................................................................................... 8

2(1) Micropterous (Figs 12, 13), forewing not extending beyond apex of gaster ....................... O. hemipterus Haliday

– Macropterous: wings normal, forewing extending beyond apex of gaster ........................................................... 3

3(2) Metanotum and propodeum with reticulate sculpture (Figs 10, 11); forewing rounded apically ( Fig. 14 ) ........... ............................................................................................................................................. O. hemipterus Haliday

– Metanotum and propodeum without reticulate sculpture; forewing at least slightly truncate apically................. 4

4(3) Funicle with mps on F7 and F8 only ( Fig. 106 ) ...................................................................... O. vulgatus Haliday

– Funicle with mps on other segments in addition to F7 and F8 ............................................................................. 5

5(4) Clava with 8 mps ..................................................................................................................... O. insignis Haliday

– Clava with 7 mps .................................................................................................................................................. 6

6(5) Mps absent on F6 ( Fig. 38 ) ........................................................................................................ O. notatus Walker

– Mps almost always present on F6 (at least 1, usually 2, except very rarely absent in some O. sublaevis Foerster (in that case propodeum with median carina usually longer than or sometimes subequal in length to median areole or often median carina incomplete, not extending to anterior margin of propodeum ( Fig. 86 ) or almost absent) ................................................................................................................................................................... 7

7(6) F4 with 2 mps ( Figs 50, 52 ); propodeum with median carina present and shorter than median areole ( Fig. 54 ) .. .................................................................................................................................................... O. novickyi Soyka

– F4 almost always without mps ( Fig. 84 ) or, very rarely, with 1 mps; propodeum with median carina, when present and complete, subequal to or (usually) longer than median areole but, often, median carina incomplete, not extending to anterior margin of propodeum ( Fig. 86 ) or almost absent ............................... O. sublaevis Foerster

8(1) Metanotum and propodeum with reticulate sculpture ( Fig. 17 ); forewing markedly rounded apically ( Fig. 19 ) .. ............................................................................................................................................. O. hemipterus Haliday

– Metanotum and propodeum without reticulate sculpture; forewing usually at least slightly truncate (occasionally just slightly rounded) apically ........................................................................................................................ 9

9(8) Posterior scutellum mostly smooth except for weak sculpture at lateral borders (as in Fig. 111 ) and sometimes also at anterior margin (as in Fig. 108 ) ................................................................................... O. vulgatus Haliday

– Posterior scutellum entirely covered with reticulate sculpture ........................................................................... 10

10(9) Body length usually more than 1.3 mm; posterior scutellum with strong reticulate sculpture ( Fig. 29 ) ............... .................................................................................................................................................. O. insignis Haliday

– Body length usually less than 1.2 mm; posterior scutellum with weak reticulate sculpture ( Figs 45 , 90 ) ......... 11

11(10) Propodeum with a large median areole extending to or almost to anterior margin of propodeum, thus median carina very short or completely absent ( Fig. 45 ) ........................................................................ O. notatus Walker

– Propodeum with median carina usually longer than or sometimes subequal in length to median areole, or, often, median carina incomplete, not extending to anterior margin of propodeum or almost absent or, sometimes, median areole incomplete anteriorly and median carina absent ( Fig. 90 ) ............................ O. sublaevis Foerster

Figures

FIGURE 14. Ooctonus hemipterus ♀ (Mamontovka, Moskovskaya oblast’, Russia): wings.

FIGURE 111. Ooctonus vulgatus ♀ (Box Hill, near Dorking, Surrey, England): scutellum, metanotum, propodeum, and petiole (scanning electron micrograph).

FIGURES 106–110. Ooctonus vulgatus ♀ (106 – Box Hill, near Dorking, Surrey, England; 107, 109, 110 – Kunratice Potok, Prague, Czech Republic; 108 – Artikutza, Navarra, Spain): 106, antenna; 107, mesosoma; 108, posterior scutellum, metanotum, and propodeum; 109, forewing; 110, hind wing.

FIGURES 38–42. Ooctonus notatus ♀ (Kenfig Pool National Nature Reserve, Wales): 38, antenna; 39, mesosoma; 40, posterior scutellum, metanotum, and propodeum; 41, forewing; 42, hind wing.

FIGURES 84–88. Ooctonus sublaevis ♀ (84, 85, 87, 88 – Mont Rigi, Liège, Belgium; 86 – near Todtinoos, Baden- Württemberg, Germany): 84, antenna; 85, mesosoma; 86, posterior scutellum, metanotum, and propodeum; 87, forewing; 88, hind wing.

FIGURES 52–56. Ooctonus novickyi ♀ (52–54, 56 – Dielsdorf, Zürich, Switzerland; 55 – Eriksberg, Uppsala, Sweden): 52, antenna; 53, mesosoma; 54, posterior scutellum, metanotum, and propodeum; 55, forewing; 56, hind wing.

FIGURES 16–20. Ooctonus hemipterus ♂ (16, 17 – Oxwich National Nature Reserve, Wales; 18–20 – Kenfig Pool National Nature Reserve, Wales): 16, antenna; 17, mesosoma; 18, genitalia; 19, forewing; 20, hind wing.

FIGURES 28–31. Ooctonus insignis ♂ (Abergele Coed y Gopa, Denbigh, Wales): 28, antenna; 29, mesosoma; 30, genitalia; 31, forewing.

FIGURES 44–47. Ooctonus notatus ♂ (Richmond Park, Surrey, England): 44, antenna; 45, posterior scutellum, metanotum, and propodeum; 46, genitalia; 47, forewing.

FIGURES 89–92. Ooctonus sublaevis ♂ (89, 91 – Eriksberg, Uppsala, Sweden; 90, 92 – near Todtinoos, Baden-Württemberg, Germany): 89, antenna; 90, mesosoma; 91, genitalia; 92, forewing.