164 SEVENTEENTH Report STATE ENToMoLOGIsStT oF MINNEsota—1918 
NOMENCLATURE OF WING PARTS IN THE DRAWING OF 
Amblyteles centrator 
OLD SYSTEM COMSTOCK-NEEDHAM SYSTEM 
V eins Veins 
Costa subcostal Costa (C)+Sce+R+M 
(In the Ichneumonoidea consid- . 
ered in this work these veins are 
usually seemingly but not actually 
coalescent.) 
First transverse cubital. r-m and Rs 
Second transverse cubital R, 
Cubital My. and R»,+ M, 
First recurrent M.ty 
Second recurrent Transverse part of M, or first abscissa 
of M, 
Basal M and m-cu 
Subdiscoidal mand M, 
Abbreviated cubital or stump M 
Externomedial Cu 
Da § 1st abscissa M, 
Discoidal (2d and 3d abscissa M; 
Transverse median of fore wings, or M,+Cu, 
nervulus 
Marginal or S 1st abscissa Radial cross-vein 
radius (2d and 3d abscissa R, 
Transverse median of hind wings, or 
nervellus M; 
Cells Cells 
Areolet Rats 
Cubitodiscoidal Wiste Roataixat Vy 
CEISTOGASERA 
SuporpER ICHNEUMONOIDEA 
Trochanters are composed of one or two joints, the first abdominal segment is 
elbowed and the cutting edge of the mandible, in some groups, is turned outward. 
Wings usually with at least the basal, median and submedian veins present; body 
never flea-like; pronotum with its hind angles or tubercles tangent to a vertical line 
drawn tangent to the anterior edge of the tegulae and touching or underlying the 
latter; tegulae and wings usually present, sometimes vestigeal or lost. Where the 
tegulae and wings are wanting, the habitus is as in the-winged forms, the body is not 
densely hairy and the first abdominal segment is elbowed; mesothorax anteriorly 
without a free prepectus, first and second abdominal segments never developed into 
a lens-shaped scale or into a node, 
This is the most important group of Hymenoptera, in that it con- 
tains the bulk of the useful parasites for which the order is noted. 
