Canoptila

Robertson, Desiree R. & Holzenthal, Ralph W., 2006, The Neotropical caddisfly genus Canoptila (Trichoptera: Glossosomatidae), Zootaxa 1272, pp. 45-59 : 47

publication ID

https://doi.org/ 10.5281/zenodo.173282

publication LSID

lsid:zoobank.org:pub:AA3CBAF8-87A5-4DD7-A2E8-F94232392A90

DOI

https://doi.org/10.5281/zenodo.6258660

persistent identifier

https://treatment.plazi.org/id/4E208784-FFF3-C30F-A35F-3E20D986DB2D

treatment provided by

Plazi

scientific name

Canoptila
status

 

Position of Canoptila within the subfamily Protoptilinae

Canoptila Mosely , is a member of the saddle­, or tortoise­case making caddisfly family Glossosomatidae . Mosely (1939) first described the genus in Hydroptilidae , but later transferred it to what he referred to as the “ Protoptila group” in Glossomatinae, which at that time was a subfamily within Rhyacophilidae ( Mosely 1954) . The “ Protoptila group” also included Antoptila Mosely 1939 (junior synonym of Itauara Müller 1888 ), Mexitrichia Mosely 1937 , Mortoniella Ulmer 1906 , and Protoptila Banks 1904 . In 1956, Ross elevated these allied genera to subfamily status, the Protoptilinae , within Glossosomatidae . There are now 18 recognized protoptiline genera.

Several workers have discussed some possible relationships among protoptiline genera ( Angrisano 1993; Flint 1964; Ross 1956; Schmid 1990; Morse & Yang 1993; Robertson & Holzenthal 2005, among others), but a phylogeny has yet to be published. However, a few general observations can be made about the possible affinities of Canoptila to other protoptiline genera.

Canoptila shares some derived characters with several other Protoptilinae genera. In the forewing ( Fig. 2 View FIGURE 2 A), Canoptila has lost apical forks IV and V and the A 3 vein, and Cu 1 and Cu 2 have fused above the wing margin forming a continuous vein. This condition is also present in Itauara , Campsiophora Flint 1964 , Cubanoptila Sykora 1973 (in Botosaneanu & Sykora 1973), and Mastigoptila Flint 1967 . In the hind wing ( Fig. 2 View FIGURE 2 B), Canoptila shares the loss of forks I, III, IV, and V, and the loss of A 2 with the genera Scotiotrichia Mosely 1934 , Protoptila , and some species of Mexitrichia . On the mesothorax of Canoptila ( Fig. 1 View FIGURE 1 B), arising from beneath the tegula, are paired telescopic glandular projections, that appear to be eversible. Culoptila Mosely 1954 has similar structures, although much larger and “concertina­shaped,” indicating another possible relationship with Canoptila , but it is unclear if these are indeed homologous structures. Further examination is needed to determine if any other protoptilines possess these novel tegular structures. These characters suggest that Canoptila is perhaps most closely related to the more derived protoptiline genera. A modern phylogenetic analysis of all protoptiline genera will better help our understanding of these relationships.

There are 3 possible synapomorphies supporting the monophyly of Canoptila . Firstly, is the presence of long spine­like posterolateral processes on tergum X. Secondly, is the highly membranous digitate parameres on the endotheca. Primitively, parameres are more elongate and rodlike ( Schmid 1989); the condition observed in Canoptila , highly membranous digitate parameres with the sclerotized apices, appears to be derived. Finally, the unique combination of both forewing and hind wing venational characters, as discussed above, is a possible synapomorphy of the genus.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Glossosomatidae

Loc

Canoptila

Robertson, Desiree R. & Holzenthal, Ralph W. 2006
2006
Loc

Cubanoptila

Sykora 1973
1973
Loc

Mastigoptila

Flint 1967
1967
Loc

Campsiophora

Flint 1964
1964
Loc

Rhyacophilidae (

Mosely 1954
1954
Loc

Culoptila

Mosely 1954
1954
Loc

Antoptila

Mosely 1939
1939
Loc

Mexitrichia

Mosely 1937
1937
Loc

Scotiotrichia

Mosely 1934
1934
Loc

Mortoniella

Ulmer 1906
1906
Loc

Protoptila

Banks 1904
1904
Loc

Itauara Müller 1888

Muller 1888
1888