Notidobiella amazoniana Holzenthal & Blahnik

Holzenthal, Ralph W. & Blahnik, Roger J., 2010, Systematics of the Neotropical caddisfly genus Notidobiella Schmid (Trichoptera, Sericostomatidae), with the description of 3 new species, ZooKeys 71, pp. 23-47 : 26-28

Notidobiella amazoniana Holzenthal & Blahnik sp. n. Figs 67

Description.

This is the smallest species in the genus. Its wings are short and broad with venation typical for the genus except forewing crossveins r and s are absent, leaving the discoidal cell open (Fig. 7). Its genitalia are the most atypical in the genus in that the inferior appendages are not broadly spatulate, but sinuous in shape and uniform in width. Tergum IX bears a short triangular, posteromesal process, rather than short, paired processes, as found in the other species. Otherwise, the genitalia are typical for the genus.

Adult. Forewing length 4.5-5.0 mm male (n=8). Color faded, overall pale stramineous (specimens in alcohol); forewings colorless, almost transparent, denuded. Sternum VII of male with broad, fingernail-like, posteromesal process.

Male genitalia (Fig. 6). Segment IX with anterior margin acutely produced ventrolaterally; tergum IX narrow, ridge-like; sternum IX with short, triangular, posteromesal process, bearing apical setae. Tergum X simple, subquadrate in lateral view, with slight dorsomesal excavation, setose. Preanal appendage short, ovate, setose. Inferior appendage prominent, heavily setose, elongate, narrow throughout length, without mesal process on ventromesal margin; in ventral view, apex acute, slightly incurved. Phallic apparatus simple, tubular, slightly curved from base to apex; endophalic membranes prominent, with paired apical membranous lobes; elongate, lightly sclerotized band internally (perhaps the phallotremal sclerite).

Female.

Unknown.

Holotype male:

BRAZIL: Amazonas: AM 010, km 246, 15-16.vii.1979, J. Arias (alcohol) (UMSP000131226) (INPA).

Paratypes:

BRAZIL: Amazonas: same data as holotype, 3 males (alcohol) (UMSP), 4 males (alcohol) (NMNH).

Etymology:

Named for the state and region where the specimens were collected, which represents a significant northern extension of the range of the genus.