Mortoniella ormina (Mosely, 1939)

Blahnik, Roger J. & Holzenthal, Ralph W., 2011, Revision of the austral South American species of Mortoniella (Trichoptera: Glossosomatidae: Protoptilinae) 2851, Zootaxa 2851 (1), pp. 1-75 : 47

M. ormina species group

This group is characterized by species that are typically very small in size, usually dark brown to nearly black with white wing markings (including a wing bar at the anastamosis and sometimes small white spots at the apex of the wings); tergum X with a deep ventromesal excision; lateral lobes that are simple in structure, either rounded or acute apically (or with an apicolateral excision); a dorsal phallic spine that has the lateral margins at least somewhat explanate and the apex very sharply upturned (in the majority of species); a tergum IX that is typically widest in its ventral 1/2, rather than midlaterally; and a ventral process from segment IV that is elongate, narrow, and posteriorly directed. Articulated appendages at the base of the phallotheca are typically short and the accompanying mesal pockets of the fused inferior appendages have either short hooked or elongate sinuous projections. Hind wing venation is reduced, with only fork II present (fig. 19B, Blahnik & Holzenthal 2008). A distinctive and diagnostic character of the female genitalia is that segment VIII has the posterior margin invaginated, with a mesal tablike projection, bearing exactly 2 setae in species examined (fig. 18 A, Blahnik & Holzenthal 2008).