324 The Philippine Journal of Science 1922 
Key to the subfamilies. 
Hind femur with a conspicuous tooth or spine on underside between 
middle and apex. Scutellum prolonged behind into a long spine with 
a short tooth on each side at base (Plate 1, fig. 1). Africa. 
Oberthiirelline. 
Hind femur unarmed. Scutellum not ending in a spine. Petiole lon- 
gitudinally ridged and arising at or above middle of propodeum. 
Scutellum never with cup. Fourth or fifth tergite of abdomen largest 
when seen fom side, and abdomen never knifelike as in Jbalia. 
Liopterinz. 
Key to the genera of the Oberthiirelline. 
1. Metatarsus of hind leg as long as 2-5. The sharp rim of hind margin 
of the pronotum raised into a distinct vertical median tooth at 
anterior end of mesoscutum. Tooth on femur oblique with a con- 
spicuous lobe between it and distal end. Petiole with two longitudinal 
ridges above converging anteriorly. Scutellum with three pits. 
Tessmannella Hedicke. 
Metatarsus of hind leg not as long as 2-5. Pronotum without distinct 
median tooth behind. Tooth on femur perpendicular without lobe 
between it and apex. Petiole with about eight parallel ridges........ ie 
2. Tergites 2 to 4 liguliform, fifth about equal to 2 to 4 united. Scutel- 
lum with three pits at base (Plate 1, fig. 1).......- Oberthiirella Kieffer. 
Tergites 2 to 4 not liguliform, third tergite longest. Scutellum with. 
two pits at base ..n........c.ce.csesecceeeeeesseteereeeeeneernteens Xenocynips Kieffer. 
Key to the genera of the Liopterine. 
1. Metatarsus or second segment of posterior tarsus of female with 
a prolongation on one side as in Ibalia (Plate 1, fig. 2, c)-..........-- 2: 
Metatarsus and second segment of posterior tarsus of male and female 
without such prolongation 4, 
2. Prolongation is on metatarsus. Prothorax truncate. Petiole not over 
one-fourth length of abdomen. Scutellum rounded behind. Forewing 
margin ciliate 3. 
Prolongation is on second tarsal segment. Prothorax not truncate. 
Petiole six to seven times as long as broad and almost equal to 
abdomen. Scutellum bidentate behind. Forewing margin not ciliate. 
Africa Plastibalia Kieffer. 
3. Prolongation on inner side of metatarsus. Petiole three to four times 
as long as broad Pseudibalia Kieffer. 
Prolongation on outer side of metatarsus as in Ibalia. Petiole not 
longer than broad Paribalia gen. nov. 
A. Petiole at least twice and usually three to four times as long as wide, 
as long as or longer than hind coxa, and one-third length of abdomen 
and attached tangent to its dorsal curvature. In side view tergite 
4 largest in female. fs 
Petiole not longer than broad, shorter than hind coxa, attached to 
very front end of the abdomen in the usual position 5. 
5. Antenna of male 14-segmented. Cubitus arising at or near middle of 
basal. In side view tergite 5 largest in female (Plate 1, figs. 
5 and 6) Allocynips Kieffer. 
Antenna of male 15-segmented. Cubitus arising on upper quarter of 
basal sii 6. 
Fy 
