First Nearctic Records of<i>Oliveiriella</i>Wiedenbrug and Fittkau, with New Distributional Records for Two Other New World Species of Orthocladiinae (Diptera: Chironomidae)

Krestian, Brian J.; Kosnicki, Ely; Spindler, Patrice; Stringer, Shann; Epler, J. H.

doi:10.3157/021.120.0402

Cited by 3 publications

(5 citation statements)

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“…almeidai, were found in Argentina and Brazil (Paggi & Donato 2007, Tejerina & Paggi 2009, Tejerina & Malizia 2012, Wiedenbrug & Fittkau 1997. Larvae and pupae of an unknown species have been found in North America (Krestian et al 2009) which most likely means that the subgenus has a wide distribution in South and Central America. Although we have described only one species in this paper (C.…”

Section: Discussionmentioning

confidence: 99%

“…The same authors include C. (Oliveiriella) in the group of species with setal tufs and the outer margin of the larvae completely smooth, which is not true in the larvae from the Andes (that wear simple setae and have a rugose outer margin of the mandible) and that otherwise have transversal marks in the gula that are characteristic as well as are the long anal tubules. In fact, in the paper of Krestian et al (2009), there is a figure of the mentum of Oliveiriella (Fig 3a) where it can be seen that the III L 6 (5-7) 7 5 (5-7) (n = 6) 5 6 (4-8) (n = 25) IV L 5 (3-5) 5 5 (4-5) (n = 6) 5 4 (3-6) (n = 24) V L 3 (2-4) 3 3 (2-4) (n = 4 2 3 (2-4) (n = 10) AR 2 (1-2) 1 2 (1-2) (n = 4) 2 2 (2-3) (n = 24) AB L 27 (22-32) (n = 4) 25 (19-33) (n = 10) LO L 9 (9-9) (n = 2) 8 (7-10) (n = 5) mentum is dark and with striae similar to those of ours Fig 4b. The key of Andersen et al (2013) should be consequently changed to allow the distinction of the Oliveiriella subgenus members from the genus Cricotopus.…”

Section: Genitaliamentioning

confidence: 99%

“…in the region of Jujuy (Argentina). Finally, pupae of Oliveiriella were collected by Krestian et al (2009) in Arizona and New Mexico, from two rivers at elevations between 1180 and 1449 m a.s.l. In all cases, streams where the larvae have been found until now are of clear and oligotrophic waters.…”

Section: Introductionmentioning

confidence: 99%

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The Cricotopus (Oliveiriella) (Diptera: Chironomidae) of the High Altitude Andean Streams, with Description of a New Species, C. (O.) rieradevallae

et al. 2017

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The genus Oliveiriella (Chironomidae, Orthocladiinae) was erected by Wiedenbrug & Fittkau (1997). The adults have characteristic black spots on their wings and other characteristics similar to the genus Cricotopus. Pupal skins are very characteristic with strong short spines in the anal lobe instead of setae, while larvae are distinguishable by the long anal papillae and the intense blue color of their body. However, Andersen et al (2013) consider Oliveiriella as a subgenera of Cricotopus. In this paper, using the sequences of the cox1 gene, we conclude that Oliveiriella should be considered a subgenus within Cricotopus, confirming its status in Andersen et al (2013). Furthermore, we describe Cricotopus (Oliveiriella) rieradevallae Prat & Paggi sp. n. from the Saltana river (Ecuador). The adult males, females, and preimaginal stages of the two species of subgenus Oliveiriella known from South America Cricotopus (O.) almeidai n. comb. from Peru, Brazil, and Argentina and Cricotopus (O.) sanjavieri n. comb. from Argentina are compared with those of Cricotopus (O.) rieradevallae sp. n. from Ecuador. The differences allow the distinction of the three species. The cox1 gene reveals that at least three different undescribed species of the same subgenus are present in the high-altitude tropical Andes. The morphology of the available pupae and pupal exuviae reveals the presence of several morphotypes that are candidates to be described as new species. A key used to distinguish these pupal morphotypes is provided, including the three described species. Additionally, the distribution of the subgenus is discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Genitaliamentioning

confidence: 99%

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The Cricotopus (Oliveiriella) (Diptera: Chironomidae) of the High Altitude Andean Streams, with Description of a New Species, C. (O.) rieradevallae

et al. 2017

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“…Also, O. sanjavieri and Onconeura sp.1 showed relatively high indicator values (46 and 43%, respectively), being the only two species of Orthocladiinae that showed an increased abundance during this period. These genera have a wide distribution range and tolerate moderate temperatures, neutral to alkaline pH and high conductivity values (Krestian et al, 2010), coinciding with the conditions where they were collected in this study. Finally, Larsia sp.…”

Section: Spatial and Temporal Variation Of Chironomidae Larvae Assembmentioning

confidence: 95%

Chironomidae (Diptera) larvae assemblages differ along an altitudinal gradient and temporal periods in a subtropical montane stream in Northwest Argentina

Tejerina

Malizia

2012

Hydrobiologia

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The objective of this study was to analyze the spatial and temporal dynamics of Chironomidae larvae assemblages in a subtropical mountain river basin of northwestern Argentina. We hypothesized that they would respond to (1) environmental changes along the altitudinal gradient in the Yungas forests; (2) environmental changes caused by spates (e.g., increased discharge or sediment transportation). We sampled five sites along an altitudinal gradient of ca. 1,500 m (from 680 to 2,170 m) during low-water and high-water period for 2 years. The Chironomidae larvae assemblages varied along the altitudinal gradient and between sampling periods based on an indicator species analyses and an ordination analyses (NMDS). The best indicator for high altitude sites was ''Genus X'' followed by Onconeura sp.2, ''Genus 9'', ''Genus 10'', and Rheotanytarsus sp.2; while Rheotanytarsus lamellatus, Oliveiriella sanjavieri, and Thienemanniella sp. were good indicators for low altitude sites. O. sanjavieri and R. lamellatus were the best indicators for high-water period. The most relevant environmental variables influencing their spatial and temporal distribution were altitude, water temperature, conductivity, and pH. This study is the first to analyze and describe in detail the spatial and temporal distribution of Chironomidae larvae assemblages in northwestern Argentina, and most of the taxa reported here are new records for the region.

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“…While many Tanypodinae and Chironominae species are common in slow-flowing lowland rivers and lakes, the larvae of Orthocladiinae species are more often associated with fast-flowing streams and rivers, particularly in mountainous areas (see e.g. Andersen et al 2013 (Mendes et al 2004;Andersen & Saether 2005;Krestian et al 2009;Lin et al 2013). But most of the new genera appear to be endemic to the region; in fact the region has now a higher number of endemic Orthocladiinae genera than any of the other major biogeographical regions (Ashe & O'Connor 2012).…”

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confidence: 99%

Titimbera, a new genus of Orthocladiinae from South and Central America (Diptera: Chironomidae)

Andersen

Pinho

Mendes

2015

Studies on Neotropical Fauna and Environment

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Titimbera n. gen. is erected based on the males of three new species from South and Central America: T. amazonica n. sp. from the Amazon region, Brazil; T. titi n. sp. from Venezuela and T. laselvensis n. sp. from Costa Rica. The combination of bare eyes and wing membrane; antenna without strong apical seta; scalpellate acrostichals in mid scutum; costa strongly extended; R 4+5 ending opposite to M 3+4 ; Cu 1 strongly curved to slightly sinuous; anal point sitting high on tergite IX, nearly parallel-sided with bluntly rounded apex; and club-shaped to subtriangular gonostylus with distinct heel will separate the genus from all other orthoclads.Titimbera n. gen. é descrito com base em machos de três espécies novas das Américas Central e do Sul: T. amazonica n. sp. da região amazônica, Brasil; T. titi n. sp. da Venezuela e T. laselvensis n. sp. da Costa Rica. A combinação de olhos e membrana alar nus; antena sem forte seta apical; acrosticais escalpeladas no meio do escudo; costa fortemente estendida; R 4+5 terminando oposta a M 3+4 ; Cu 1 de fortemente curvada a levemente sinuosa; ponta anal surgindo da porção média do tergito nono, quase paralela lateralmente e com ápice arredondado e gonóstilo de clavado a subtriangular com distinta projeção separam o gênero de todos os outros ortocladíneos.

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First Nearctic Records ofOliveiriellaWiedenbrug and Fittkau, with New Distributional Records for Two Other New World Species of Orthocladiinae (Diptera: Chironomidae)

Cited by 3 publications

References 3 publications

The Cricotopus (Oliveiriella) (Diptera: Chironomidae) of the High Altitude Andean Streams, with Description of a New Species, C. (O.) rieradevallae

The Cricotopus (Oliveiriella) (Diptera: Chironomidae) of the High Altitude Andean Streams, with Description of a New Species, C. (O.) rieradevallae

Chironomidae (Diptera) larvae assemblages differ along an altitudinal gradient and temporal periods in a subtropical montane stream in Northwest Argentina

Titimbera, a new genus of Orthocladiinae from South and Central America (Diptera: Chironomidae)

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