aedeagus: penis ( diagram "male terminalia")
anal break: break in the vein along the posterior wing margin at the apex of the claval fold
( diagram "wing")
antenna: usually 10-segmented
apical spurs: strongly sclerotised spurs at the metatibial apex (tibia of hind leg)
( diagram "hind leg")
capitate seta: seta which is apically inflated
( diagram "nymph")
caudal plate: slerotised terminal plate of the nymphal abdominal dorsum
( diagram "nymph")
cell: surface between veins of wing ( diagram "wing")
circumanal ring: ring consisting of densely spaced wax pores surrounding the nymphal anus ( diagram "nymph")
dorso-ventral: in the vertical body axis
dorsum: back
metabasitarsus: basal segment of tarsus of hind leg ( diagram "hind leg")
metatarsus: tarsus of hind leg ( diagram "hindleg")
metatibia: tibia of hind leg ( diagram "hindleg")
ovipositor: female terminalia consisting of proctiger, subgenital plate and valvulae
( diagram "female terminalia")
paramere: paired structure attached to the male subgenital plate used during copulation to hold female terminalia ( diagram "male terminalia")
proctiger: abdominal tergite containing anus
( diagram "male terminalia" and "female terminalia")
sectaseta (plural sectasetae): short bipartite seta ( diagram "nymph")
seta (plural setae): bristle, hair
sternite: abdominal, ventral sclerite
subgenital plate: genital sternite ( diagram "male terminalia" and "female terminalia")
tergite: abdominal dorsal sclerite
valvula (plural valvulae): part of the female ovipositor used to lay the egg
( diagram "female terminalia")
venation: the forewing consists of a characteristic arrangement of the veins which separate the cells ( diagram "wing")
venter: the ventral body surface
wing buds: nymphal structures from which the adult wings develop ( diagram "nymph")