File:Snodgrass 1911 Plate 7.jpg

Fig. 29. Trogus lutorius (Ichneumonide), thorax and base of abdomen, legs removed, ventral.
Fig. 30. Trogus lutorius, mesotergum, left side.
Fig. 31. Alomya debellator (Ichneumonidee), mesothorax, left side.
Fig. 32. Trogus lutorius, left mesopleurum, internal.
Fig. 33. Erymotylus macrurus (Ichneumonidez), mesotergum, dorsal.
Fig. 34. Syntomaspis racemariae = Torymus recemareae (Ashmead, 1881) (Chalcidoidea), thorax and base of abdomen.

Abbreviations:
The figures 1, 2, 3, etc., placed before an abbreviation signify first, second, third, etc.; the figures 1, 2, and 3 placed after and below an abbreviation refer the latter to the prothorax, mesothorax, or metathorax, respectively, except on the wings where they indicate branches of the veins; the Roman numerals I-X designate the abdominal segments or their respective parts. A subdivision of any part is indicated by a duplicate of its symbol in lower case letters.

A, anal vein.
ANP, anterior notal wing process.
ANR, anterior ventral notal ridge.
anr, line on surface of notum formed by ANR.
Aph, prephragma of any segment.
Ax, axillary sclerites of wing base. 1Azr, 2Ax, 3Ax, 4Az, first, second, third, and fourth axillaries.
AxC, axillary cord, the ligament-like thickening of posterior edge of axillary membrane of wing.
AxD, axillary disk, usually attached to second axillary and bearing insertion of coxo-axillary muscle.
AxM, axillary membrane, the membrane of the wing base.
C, costa.
Cer, cervicum.
Cu, cubitus.
cv, cross vein.
Cz, coxa.
CxP, coxal process of pleurum.
Em, lateral emargination of notum.
Emp, empodium.
Epm, epimerum.
epm, subdivision of epimerum.
EpmA, epimeral arm.
Eps, episternum.
eps, subdivision of episternum.
Es, Eusternum.
F, femur.
Fu, furca (entosternum.)
H, head.
ISp, first abdominal spiracle.
IT, first abdominal tergum, called the propodeum in Hymenoptera when transferred to thorax.
it, subdivision of propodeum (IT).
I, leg.
M, media.
m, small median plate or plates of wing base.
Mb, ‘‘intersegmental” membrane.
m-cu, medio-cubital cross vein.
m-m, median cross vein.
N, notum.
P, parapterum: 1P, 2P, first and second or episternal paraptera; 3P, 4P, third and fourth or epimeral paraptera.
PA, pleural arm, process of pleural ridge.
Pet, pectus, the sternum and pleura together of any segment.
PD, pronator disk.
Peps, preepisternum.
Ph, phragma: 1Ph, 2Ph, 3Ph, first, second, and third phragmas.
Pl, pleurum.
pl, subdivision of pleurum.
PN, Postnotum (postscutellum, pseudonotum).
pn, subdivision of postnotum.
PNP, posterior notal wing process.
PNR, posterior ventral notal ridge.
pnr, line on surface of notum formed by PNR.
Ppct, prepectus.
Pph, postphragma of any segment.
PR, internal pleural ridge (entopleurum).
PS, pleural suture, separating episternum and epimerum along line of internal pleural ridge.
Ps, presternum.
Psc, prescutum.
Psl, poststernellum.
Pv, pulvillus.
R, radius.
Rd, posterior reduplication of edge of notum.
r—m, radio-medial cross vein.
S, sternum.
Sc, subcosta.
Scl, scutellum.
scl, subdivision of scutellum.
Sct, scutum.
Sl, sternellum.
Sp, spiracle (1Sp, 2Sp, first and second thoracic spiracles; ISp, first abdominal spiracle).
T, tergum (IT, first abdominal tergum, the propodeum when fused with the thorax).
Tar, tarsus.
Tg, tegula.
Tn, trochantin.
TnC, coxal process of trochantin.
Tr, trochanter.
VNR, ventral V-shaped ridge of notum (entodorsum).
vnr, line on surface of notum formed by VNR.
W, wing.