Systasis

Female Systasis, from Bouček (1988).

Belongs within: Ormocerinae.

Systasis is a cosmopolitan genus of wasps of uncertain biology: they may parasitise insect larvae within galls, or they may be gall-formers themselves (Bouček 1988).

Characters (from Bouček 1988): Body with more or less distinct metallic tinge; antenna with seven segments between pedicel and clava; thoracic dorsum usually lacking coarse punctures, usually with dense reticulation (and then dull) or very dense but fine puncturation; propodeum deeply reticulate; forewing with rather sparse pilosity, with a large speculum anteriorly reaching virtually the distal end of the marginal vein, thus making conspicuous a row of longish hairs on the underside, below the marginal vein; marginal vein more than twice as long as stigmal, postmarginal vein usually only slightly longer than the stigmal; legs usually more or less infuscate.

<==Systasis Walker 1834 [incl. Guieralia Risbec 1951, Paruriella Girault 1913, Systasina Bouček 1955] B88
    |--*S. encyrtoides B88
    |--S. australiensis (Girault 1913) [=Paruriella australiensis] B88
    |--‘Miscogaster’ bato Walker 1839 B88
    |--S. cecidomyiae (Ashmead 1900) [=Asemantus cecidomyiae] B88
    |--S. cecili Girault 1929 B88
    |--S. cernus (Walker 1839) [=Miscogaster cernus, Seladerma cernum] B88
    |--S. dasyneurae A71
    |--S. dice (Walker 1839) [=Miscogaster dice, Semiotellus dice, Semiotus dice] B88
    |--S. doddi (Girault 1915) [=Schizonotus doddi] B88
    |--S. euctemon (Walker 1839) [=Pteromalus euctemon] B88
    |--S. flindersiae Girault 1934 G34
    |--S. graminis (Cameron 1912) (see below for synonymy) B88
    |--S. grotiusi Girault 1915 B88
    |--S. henrici Girault 1913 B88
    |--S. horridula (Girault 1915) [=Paruriella horridula] B88
    |--S. insularis Dodd & Girault in Girault 1915 B88
    |--S. keatsi Girault 1927 B88
    |--S. lelex (Walker 1839) [=Pteromalus lelex] B88
    |--‘Miscogaster’ letus Walker 1839 B88
    |--S. merula (Walker 1839) [=Miscogaster merula, Semiotellus merula, Semiotus merula] B88
    |--S. persimilis (Dodd & Girault in Girault 1915) [=Paruriella persimilis] B88
    |--S. punctativertex Girault 1915 B88
    |--S. seposita Girault 1915 [=S. sepositus] B88
    `--S. varipes Girault 1915 B88

Systasis graminis (Cameron 1912) [=Callimome graminis, Paruriella graminis; incl. C. reticulatus Cameron 1912, Systasis reticulata] B88

*Type species of generic name indicated

REFERENCES

Bouček, Z. 1988. Australasian Chalcidoidea (Hymenoptera): A biosystematic revision of genera of fourteen families, with a reclassification of species. CAB International: Wallingford (UK).