Cernotina

Ross, 1938

tube maker caddisfly

Species Guides

1

Cernotina is a of tube maker caddisflies in the Polycentropodidae, established by Ross in 1938. The genus contains more than 70 described and is exclusively New World in distribution. Species occur primarily in the Neotropical region, especially the Amazon basin lowlands, with additional records from North America. Larvae are aquatic and associated with freshwater .

Pronunciation

How to pronounce Cernotina: //ˌsɛrnoʊˈtiːnə//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

males can be distinguished by features of the intermediate appendage of the male genitalia; the of this structure has been established for the . Larvae of Cernotina truncona can be distinguished from C. spicata by differences in setal placement and number on the meso- and , mandibular , width, and setation of the . Larvae possess anal claws with small spines on the concave margin, a novel finding for the genus. Only two larvae (C. spicata and C. truncona) have been described, leaving most unknown in the stage.

Habitat

Freshwater aquatic environments including lotic and lentic waters. Neotropical are associated with lowland Amazon basin . North American species occur in lotic and lentic freshwaters in the southeastern United States.

Distribution

Exclusively New World: Neotropical region (Mexico, Central America, Caribbean, South America), especially Amazon basin lowlands of central and northern Andean countries. Absent from temperate southern South America (Chile and adjacent Patagonian Argentina). Specific records from Brazil (Acre, Amazonas), Ecuador, Peru, Argentina, Uruguay, and Tobago. North American records from the southeastern United States.

Life Cycle

stages are aquatic in freshwater. Larvae construct tubes or cases typical of Polycentropodidae. and occur in association with aquatic .

Ecological Role

Biological indicators of freshwater quality; high sensitivity to pollution and environmental changes. North American larvae have been observed as , though ecological data for Neotropical is lacking.

Human Relevance

Of conservation concern due to vulnerability: surveyed regions in the Amazon basin severe environmental threats from logging, mining, and crude oil extraction. The Parque Nacional da Serra do Divisor in Brazil, which harbors Cernotina , has faced threats from proposed road development.

Similar Taxa

  • Other Polycentropodidae generaCernotina can be distinguished by the structure of the male genitalia, particularly the intermediate appendage; larval identification requires detailed examination of setal patterns and mandibular .

More Details

Taxonomic history

The was established by Ross in 1938. Despite containing over 70 , larval descriptions exist for only two species (C. spicata and C. truncona), severely limiting ecological understanding of the genus.

Research gaps

No ecological information exists for Neotropical regarding diet, , or detailed requirements. The of North American larvae is better known but may not be representative of the as a whole.

Sources and further reading