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We discuss the fragmentation of antennal sclerites, the possible function of the pronotal process and profemoral spine, the possible link between mesoscutellar spine presence and forewing shape, forewing venation, and the possible involvement of forewings and basiabdominal laterotergites in the spread of repellent secretion, and some aspects of potential antipredatory mechanisms.
The majority of species have pure white uppersides, with prominent orange, yellow, or crimson tips of the forewings.
Finally, he diagnosed all subfamilies but Ocelloveliinae by the lack of ocelli, the forewing with less than six closed cells, and the second gonoeoxae fused medially.
Although very similar to several other ermine species, it can be roughly identified by the hairs on its forewing which are pure white, as opposed to greyish.
Forewing fuscous grey; costa yellowish towards base; a groove above cell; indistinct medial band.
It is well-defined by its forewing shape and pattern as well as the apically-hooked paramere and the concave dorsal margin of the female proctiger.
awpron, anterior width of pronotum; Hw, head width; iod, intra-ocular distance; LFIII, length of hind femur; LFW, forewing length; Lpron, pronotum length; Ltars1-III, length of basitarsomere III; LTIII, length of hind tibia; OL, ovipositor length; pwpron, posterior width of pronotum; wFIII, width of hind femur; wFW, median forewing width; wpron, pronotum width.
Wings infuscate; substigmal spot of forewing moderately developed, stigma blackish, costa brown, somewhat darker apically, subcosta and rest of venation blackish becoming brown apically.
The name refers to the distinctive black mark on each forewing, which is said to resemble a letter in the Hebrew alphabet.
In his revisional study on the genus Ditrigona, Wilkinson (1968) enumerated the generic characters as follow: antennal form variable, serrate, unipectinate or bipectinate; thorax and abdomen usually white; forewing not strongly falcate; the fasciae gray to brown; uncus present either bifid, bifurcate or single; valves variably developed; aedeagus strongly developed and variously shaped; ostium variable; corpus bursae in most species with signum and with an accessory sac.
Veins on clavus (Pcu and 1An) of forewing of about same thickness as Cu on the corium (Figs.
Median dark brown slanted stroke on forewing poorly developed or absent.