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Subgenus Acantholeucania
Rungs
Type
species: loreyi Duponchel.
This group shares
derived features of the next, loss of all coronal. spines, a very short neck to
the cucullus, which is usually longer than broad rather than vice versa. The
group resembles more plesiomorphic taxa in the next group as it has not
completely lost the trifine hair pencil structure, having a weak corema in the
position of the hair pencil base. The genus as originally defined by Rungs
contained three closely related armyworm species from the Old World: the type
species ranging more or less throughout the range of the genus; loreyimima Rungs,
possibly Australasian but recorded from scattered Oriental localities; curvula
Walker (= pseudoloreyi Rungs), Afrotropical. The sacculus is deep,
externally corematous, and with a strong apical spine. M. yu is
tentatively included here as, though lacking these genitalia characters, it
shares the feature of wide separation of the more sclerotised zones of the male
eighth sternite. It and loreyi are known from Borneo.
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