Browsing by Subject "caddisfly"

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The caddisfly genus Protoptila in Costa Rica (Trichoptera: Glossosomatidae)
(Magnolia Press, 2006) Holzenthal, Ralph W.; Blahnik, Roger J.
Nineteen species of Protoptila known from Costa Rica are revised to include 11 previously described species (P. bicornuta Flint 1963, P. boruca Flint 1974, P. burica Flint 1974, P. cana Flint 1974, P. ixtala Mosely 1937, P. laterospina Flint 1967, P. orotina orotina Flint 1974, P. spirifera Flint 1974, P. talamanca Flint 1974, P. tica Bueno-Soria 1984, and P. tojana Mosely 1954) and 8 new species (P. altura, P. bribri, P. chitaria, P. cristula, P. kjeri, P. jolandae, P. strepsicera, and P. trichoglossa). Illustrations, diagnoses, descriptions, and distribution records are provided for all species.
Five new species of Polycentropodidae (Trichoptera) from Ecuador and Venezuela
(Magnolia Press, 2005) Hamilton, Steven W.; Holzenthal, Ralph W.
Diagnoses, descriptions and illustrations of male genitalia are given for four new species of the Polycentropus gertschi group, Polycentropus cressae n. sp., Polycentropus neblinensis n. sp., Polycentropus quadricuspidis n. sp., and Polycentropus silex n. sp. The former two are from Venezuela and the latter two from Ecuador. In addition, a diagnosis, description and set of male genitalia illustrations are provided for Polyplectropus beccus, a new species from Ecuador. The generic placement of this species, while currently appropriate, may require reclassification pending completion of ongoing studies on Neotropical polycentropodids.
Gravel, Leaves, and Candy Bar Wrappers: An Analysis of the Case-Building Behavior of Caddisflies in An Artificial Environment
(2012-04-11) Austin, Stewart
Although it lacks the majesty of a butterfly being released form its cocoon, the caddisfly may be said to have one of the most interesting life cycles of any known insect. Ten months after being born, the caddisfly larvae will then enter its next stage of development by building itself a cocoon out of literally anything it can find, using a combination of secreted adhesive (as we might describe it) and present building materials to form a cocoon around itself, protecting itself from its surrounding environment while the pupae present within develops into an adult. Although caddisflies have specific preferences for building materials, depending from species to species, it has been proven in multiple experiments that caddisflies will use different materials when forced out of their shells. One experiment showed that, when ejected from their cases prematurely, the caddisfly larvae will immediately rebuild their cases and do so as rapidly as possible, using whatever material is present (Hansell, 179). Another experiment shows that, oddly enough, caddisflies will actually use different materials for their cases as based on the presence of known predators, choosing stronger materials if needed (Boyero, Rincon, Bosch, 364), while yet another experiment discovered that caddisflies will select materials that will assist with the collection of oxygen (i.e. by having water pass through the case), and will use materials that are best for their specific environments. Using this information as our stating point, this group decided to create an experiment to test the case-material preferences of caddisflies living within Itasca State Park by ejecting them from their cases, placing them in a enclosed environment, presenting them with various materials, both natural and unnatural, and observing which materials they chose to use. For the purposes of this experiment, our initial hypothesis was that caddisfly choose case-building materials that are most common to their environments (i.e. organic/natural materials), and we predicted that, when given a choice, the caddisflies we used would select to use leaves/dirt more often than the various bits of inorganic/unnatural material we gave them.
Historical and contemporary biological diversity of Minnesota caddisflies: a case study of landscape-level species loss and trophic composition shift
(University of Chicago Press, 2010) Houghton, David C.; Holzenthal, Ralph W.
The biological diversity reflected by nearly 300,000 caddisfly specimens collected throughout Minnesota since 1985 was compared with that of 25,000 specimens recorded prior to 1950 and was analyzed based on the 5 caddisfly regions of Minnesota. In the Lake Superior, Northern, and Southeastern regions, .90% of species known historically from each region were recovered and additional species were discovered. In the Northwestern and Southern regions—the most disturbed areas of Minnesota—species recovery ranged from 60 to 70%. Historical and contemporary assemblages were similar to each other in the former 3 regions and markedly different in the latter 2. Prior to 1950, species in all trophic functional groups were widespread in all regions. A similar pattern still exists in the Lake Superior, Northern, and Southeastern regions, whereas the Northwestern and Southern regions are now dominated by filtering collectors in all sizes of lakes and streams. Over 65% of species extirpated from any region were in the long-lived families Limnephilidae and Phryganeidae, and 70% of these same species were in the shredder functional group. Almost 30% of the statewide fauna has been found from ,5 localities since 1950, suggesting a degree of imperilment on par with that of freshwater bivalves, gastropods, and fish. These observed losses of biodiversity and changes in trophic composition have probably occurred as a result of anthropogenic disturbance throughout most of the northcentral US.
Nectopsyche Neotropical Trichoptera Newsletter, Issue Number 1
(University of Minnesota Insect Collection, 2004-01-31) No author
Nectopsyche Neotropical Trichoptera Newsletter, Issue Number 1 Supplement
(University of Minnesota Insect Collection, 2004-01-31) No author
Nectopsyche Neotropical Trichoptera Newsletter, Issue Number 2
(University of Minnesota Insect Collection, 2004-09-08) No author
Nectopsyche Neotropical Trichoptera Newsletter, Issue Number 3
(University of Minnesota Insect Collection, 2006-06) No author
The Neotropical caddisfly genus Canoptila (Trichoptera: Glossosomatidae)
(Magnolia Press, 2006) Robertson, Desiree R.; Holzenthal, Ralph W.
The caddisfly genus Canoptila Mosely (Glossosomatidae: Protoptilinae), endemic to southeastern Brazil, is diagnosed and discussed in the context of other protoptiline genera, and a brief summary of its taxonomic history is provided. A new species, Canoptila williami, is described and illustrated, including a female, the first known for the genus. Additionally, the type species, Canoptila bifida Mosely, is redescribed and illustrated. There are three possible synapomorphies supporting the monophyly of Canoptila: 1) the presence of long spine-like posterolateral processes on tergum X; 2) the highly membranous digitate parameres on the endotheca; and 3) the unique combination of both forewing and hind wing venational characters.
The Neotropical caddisfly genus Tolhuaca (Trichoptera: Glossosomatidae)
(Magnolia Press, 2005) Robertson, Desiree R.; Holzenthal, Ralph W.
The caddisfly genus Tolhauca Schmid 1964 (Glossosomatidae: Protoptilinae) is diagnosed and discussed in the context of other protoptiline genera, and a review of its taxonomic history is provided. A new species, Tolhuaca brasiliensis, from southeastern Brazil, is described and illustrated, and the type species, Tolhuaca cupulifera Schmid 1964, from Chile, is redescribed and illustrated. Additionally, females of the genus are described and illustrated for the first time. Characters of the female genitalia, wing venation, and thorax suggest that Tolhuaca is more primitive than any other protoptiline genus and probably deserves a basal placement within the subfamily. The genus shows a broadly disjunct distribution perhaps reflecting an ancient southern Gondwana pattern.
A new Ecuadorian species of the rare Neotropical caddisfly genus Amphoropsyche Holzenthal (Trichoptera, Leptoceridae)
(Pensoft Publishers, 2016) Holzenthal, Ralph W.; Rios-Touma, Blanca
A new species of the rare long-horned caddisfly genus Amphoropsyche Holzenthal is described from Ecuador, bringing the number of species known from the genus to 15. All species are very regional in their distributions and known only from very few specimens. The new species, Amphoropsyche real, is similar to a number of previously described species from Colombia (A. ayura, A. cauca, A. flinti, A. quebrada, and A. stellata) and Ecuador (A. napo and A. tandayapa). The males can be distinguished from the others by features of segment X of the male genitalia, especially the prominent midlateral and subapicodorsal spinelike setae. An updated taxonomic key to males of the genus is provided.
A new genus of long-horned caddisfly from the Amazon basin (Trichoptera: Leptoceridae: Grumichellini)
(Magnolia Press, 2004) Holzenthal, Ralph W.; Pes, Ana Maria Oliveira
Amazonatolica hamadae, new genus, new species (Leptoceridae: Grumichellini), is described from the Amazon basin of Brazil. The adult male and female, larva, pupa and case are described and illustrated. The biology and habitat of the new species is unusual for members of its tribe in that it occurs attached to vegetation in acidic, lowland streams.
New Neotropical species of Chimarra (Trichoptera, Philopotamidae)
(Pensoft Publishers, 2012) Blahnik, Roger J.; Holzenthal, Ralph W.
Ten new Neotropical species of Chimarra are described in the subgenera Chimarra, Chimarrita, and Otarrha. New species in the subgenus Chimarra include, in the C. ortiziana group: C. calori sp. n. (southeastern Brazil) and C. onchyrhina sp. n. (Venezuela); in the C. picea group: C. inchoata sp. n. (Venezuela), C. nicehuh sp. n. (Venezuela), and C. sunima sp. n. (Colombia); and in the C. poolei group: C. cauca sp. n. (Colombia) and C. desirae sp. n. (Bolivia). New species in the subgenus Chimarrita include, in the C. simpliciforma group: C. curvipenis sp. n. (SE Brazil) and C. latiforceps sp. n. (SE Brazil). A single new species in the subgenus Otarrha is also described: C. soroa sp. n. (Cuba). Males and females for all of the new species are illustrated, except for C. desirae, for which female specimens were unavailable. Additionally, the female of C. (Chimarrita) camella, which was previously unknown, is illustrated.
A new species of Amphoropsyche (Trichoptera, Leptoceridae) from Ecuador, with a key to the species in the genus
(Pensoft Publishers, 2011) Holzenthal, Ralph W.; Rázuri-Gonzales, Luis Ernesto
A new species of Amphoropsyche Holzenthal is described from Ecuador. It is similar to a group of species with dorsomesal processes on the preanal appendages (i.e., A. woodruffi Flint & Sykora, A. refugia Holzenthal, and A. aragua Holzenthal), but can be distinguished from these and other members of the genus by the short, digitate dorsomesal processes on the preanal appendages and the broad lateral processes of tergum X of the male genitalia. A key to males of the 14 species now known in the genus is presented based on characters of the genitalia.
New species of Smicridea (Rhyacophylax) (Trichopera: Hydropsychidae) from Costa Rica
(American Entomological Society, 1995) Holzentahl, Ralph W.; Blahnik, Roger J.
Three new species in lhe caddjsfly genus Smicridea, subgenus Rhyacophylax, are described from Costa Rica and 25 additional species in the two recognized subgenera are recorded from the country. Illustrations of the male and female genitalia and wing coloration are provided for each of the new species along with a map of their distributions. Two of the new species, S. singri and S. nemorosa, are in the signota species group. and the third, S. rapanti, is a member of the peruana species group.
Revision of the austral South American species of Mortoniella (Trichoptera: Glossosomatidae: Protoptilinae)
(Magnolia Press, 2011) Blahnik, Roger J.; Holzenthal, Ralph W.
Species of Mortoniella are revised for the southern part of the South American continent, including the countries of Brazil, Paraguay, Uruguay, Argentina and Chile. The M. velasquezi species group is diagnosed for the first time and the M. bilineata species group is more critically defined. Males of all species from the region, except M. armata (Jacquemart, 1963), are figured, and a key is provided for their identification. Included in the revision are 11 described species and 22 new species. Previously described species that are redescribed and figured include the following: Mortoniella albolineata Ulmer, 1907; M. argentinica Flint, 1974; M. catarinensis (Flint, 1974); M. collegarum (Rueda & Gibon, 2008); M. guairica (Flint, 1974); M. ormina (Mosely, 1939); M. pocita (Flint, 1983); M. punensis (Flint, 1983); M. teutona (Mosely, 1939) M. unota (Mosely, 1939); and M. wygodzinskii (Schmid, 1958). Mortoniella collegarum, originally described from Bolivia and Argentina, is here reported from Chile, representing the first distributional record of Mortoniella for that country. It is assigned to the M. ormina species group. On morphological considerations, M. argentinica is removed from the M. bilineata species group and left as a species incertae sedis as to species group. Based on its overall similarity to M. argentinica, M. spinulata (Flint, 1991), from Colombia, is removed from the M. leroda species group and left as a species incertae sedis as to species group. New species of Mortoniella described here, followed by their respective areas of distribution, include, for the M. leroda species group: Mortoniella acauda (SE Brazil), M. agosta (SE Brazil), M. asym- metris (Paraguay), M. crescentis (SE Brazil), M. dolonis (SE Brazil), M. guahybae (SE Brazil), M. hystricosa (SE Brazil), M. intervales (SE Brazil), M. latispina (SE Brazil), M. longispina (SE Brazil), M. paraguaiensis (Paraguay), M. parauna (SE Brazil), M. paraunota (Argentina, SE Brazil), M. pumila (SE Brazil), M. pusilla (SE Brazil), M. truncata (SE Brazil), and M. uruguaiensis (SE Brazil, Uruguay); for the M. ormina species group: M. alicula (SE Brazil); and for the M. velasquezi species group: M. bocaina (SE Brazil), M. froehlichi (SE Brazil), and M. tripuiensis (SE Brazil). A new species unplaced as to species group is M. meloi (SE Brazil).
Revision of the genus Culoptila (Trichoptera: Glossosomatidae)
(Magnolia Press, 2006) Blahnik, Roger J.; Holzenthal, Ralph W.
The caddisfly genus Culoptila is revised to include 17 previously described species and 9 new species. Illustrations of the male genitalia and a key are provided for all species. In addition, illustrations of male head and thoracic features, larval characters and cases, and female genitalia are included. New species described here include: Culoptila bidentata (Costa Rica), C. buenoi (Mexico), C. cascada (Costa Rica), C. hamata (Costa Rica), C. pararusia (Mexico), C. plummerensis (eastern United States), C. tapanti (Costa Rica), C. unispina (Costa Rica, Panama), and C. vexillifera (Guatemala).
Revision of the Mexican and Central American species of Mortoniella (Trichoptera: Glossosomatidae: Protoptilinae)
(Magnolia Press, 2008) Blahnik, Roger J.; Holzenthal, Ralph W.
The genus Mexitrichia Mosely, 1937 (27 described species) is synonymized with Mortoniella Ulmer, 1906 (22 described species) and a revised generic description is provided for the genus. These species are placed in 4 recognized species groups. Mexican and Central American species of Mortoniella are revised to include 6 species formerly placed in Mex- itrichia and 22 new species from Costa Rica, Panama, and Mexico. New species combinations for these regional species include: Mortoniella florica (Flint, 1974), M. leroda (Mosely, 1937), M. meralda (Mosely, 1954), M. pacuara (Flint, 1974), M. rancura (Mosely, 1954), and M. rovira (Flint, 1974). New species of Mortoniella described here (followed by the country of provenance) include M. akantha (Costa Rica) M. anakantha (Costa Rica) M. aviceps (Costa Rica, Pan- ama) M. brachyrhachos (Mexico), M. buenoi (Mexico), M. carinula (Costa Rica), M. caudicula (Costa Rica), M. falcic- ula (Mexico), M. mexicana (Mexico) M. munozi (Costa Rica, Panama), M. opinionis (Costa Rica), M. panamensis (Panama), M. papillata (Costa Rica), M. pectinella (Panama), M. propinqua (Costa Rica), M. redunca (Costa Rica), M. rodmani (Costa Rica), M. sicula (Costa Rica), M. stilula (Costa Rica), M. tapanti (Costa Rica, Panama), M. taurina (Costa Rica, Panama), and M. umbonata (Panama). Males of all known Mexican and Central American species are illus- trated or reillustrated and a key is provided for males of the species.
Systematics of the Neotropical caddisfly genus Notidobiella Schmid (Trichoptera, Sericostomatidae), with the description of 3 new species
(Pensoft Publishers, 2010) Holzenthal, Ralph W.; Blahnik, Roger J.
Three new species of Notidobiella Schmid (Insecta: Trichoptera) are described from South America: Notidobiella amazoniana sp. n. (Brazil), N. brasiliana sp. n. (Brazil), and N. ecuadorensis sp. n. (Ecuador). In addition, the 3 previously described species in the genus, N. chacayana Schmid, N. inermis Flint, and N. parallelipipeda Schmid, all endemic to southern Chile, are redescribed and illustrated, including the females of each species for the first time, and a key to males of the species in the genus is provided. The occurrence of Notidobiella in Brazil and Ecuador represents a signifi cant extension of the range of the genus beyond southern Chile where it previously was thought to be endemic. The biogeography of Sericostomatidae and other austral South American Trichoptera is reviewed. The presence of the family in South America may not be part of a “transantarctic” exchange, but instead may represent an earlier occurence in the region. The distribution of Notidobiella in tropical South America likely represents recent dispersal from southern South America to the north.
Three new species of Atopsyche Banks (Trichoptera, Hydrobiosidae) from Brazil
(Pensoft Publishers, 2012) Santos, Allan P. M.; Holzenthal, Ralph W.
Three new species of Atopsyche Banks (Hydrobiosidae) from Brazil are described and illustrated: Atopscyhe (Atopsaura) blahniki sp. n., Atopsyche (Atopsyche) parauna sp. n., and Atopsyche (Atopsaura) galharada sp. n. Additional illustrations of the male genitalia of A. urumarca Schmid are provided, including its populational variation. Also, we provide new state records for 2 species: A. (Atopsyche) urumarca from São Paulo, and A. (Atopsaura) plancki Marlier from Santa Catarina.

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