Stactobiinae
microcaddisflies
Genus Guides
1Stactobiinae is a of microcaddisflies within the Hydroptilidae, comprising 479 worldwide. The subfamily is taxonomically diverse, with species distinguished primarily by detailed morphological features of male genitalia, including the structure of inferior appendages and phallic apex. In Brazil, 15 species have been documented, most of which are to the Amazon rainforest and Atlantic Forest biomes. Recent taxonomic work has expanded knowledge of the subfamily in South America through the description of new species and documentation of new distribution records.
Pronunciation
How to pronounce Stactobiinae: /stæktəʊˈbaɪɪniː/
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Identification
-level identification relies heavily on examination of male genitalic . Diagnostic features include the shape and curvature of inferior appendages, the degree of division and asymmetry of the phallic apex, the presence and form of segment IX processes, and the structure of membranous projections on appendages. For example, Flintiella angrisanoae has long, slightly sinuous inferior appendages and a phallic apex divided into two asymmetrical lobes with a mesally protruding ; Flintiella quiteriae has a deeply divided phallic apex with both lobes curved rightward and the left lobe overlapping the right; Orinocotrichia has truncated segment IX processes and inferior appendages with anteroposterior membranous projections that narrow apically.
Distribution
Brazil: Amazon rainforest and Atlantic Forest (most to these regions). New distribution records established for seven species: Bredinia espinosa, Flintiella andreae, F. astilla, F. boraceia, F. triaena, F. manauara, and F. pizotensis. Global distribution encompasses 479 species worldwide.