Trichomycetes from lentic and lotic aquatic habitats in Ontario, Canada

Fungi and protists make up an ecological group, trichomycetes, that inhabit the guts of invertebrates, mostly aquatic insects. Trichomycetes are reported herein from arthropods collected in lotic habitats (fast flowing streams) and lentic environments (ponds, ditches, seeps, and lakes) from 11 sites in Algonquin Park and 6 other sites in Ontario, Canada. Thirty-two trichomycete species were recovered, including 7 new species: Legeriomyces algonquinensis , Legeriosimilis leptocerci , Legeriosimilis whitneyi , and Paramoebidium umbonatum are described from mayfly nymphs (Ephemeroptera); Pennella digitata and Glotzia incilis from black fly and midge larvae (Diptera), respectively; and Arundinula opeongoensis from a crayfish (Crustacea). Legeriomyces rarus Lichtw. & M.C. Williams and Stachylina penetralis Lichtw. are new North American records, and seven species are documented for the first time in Canada. More common and widely distributed trichomycete species such as Harpella melusinae Léger & Duboscq and Smittium culicis Manier, were also recovered. Most previous studies on trichomycetes have been done primarily in lotic environments but clearly lentic systems (e.g., ponds and lakes) harbour diverse arthropod communities and further exploration of these habitats will continue to increase our knowledge of trichomycete diversity.

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New species, records, and immature stages of Chimarra Stephens (Trichoptera: Philopotamidae) from Campos Amazônicos National Park, northern Brazil

Zootaxa ◽

10.11646/zootaxa.4500.2.6 ◽

2018 ◽

Vol 4500 (2) ◽

pp. 258

Author(s):

GLEISON ROBSON DESIDÉRIO ◽

PATRIK BARCELOS-SILVA ◽

NEUSA HAMADA

Keyword(s):

New Species ◽

Aquatic Insects ◽

National Park ◽

Primary Objective ◽

Immature Stages ◽

Male Adult ◽

Northern Brazil ◽

Amazonas State ◽

First Time ◽

A New Species

Campos Amazônicos National Park is a federal conservation unit that contains part of the largest Cerrado refuge in the southern part of Brazilian Amazonia. Recently, during a survey of aquatic insects in the park, specimens of the caddisfly genus Chimarra were collected. The primary objective of this paper, as a result of this effort, is to describe and illustrate the male adult of a new species in Chimarra (Chimarrita), Chimarra singularis sp. nov., and the immature stages of Chimarra usitatissima Flint 1971. Additionally, the distributions of C.(Chimarrita) akantha Blahnik 1997 and C. (Curgia) jugescens Flint 1998 are extended to the southern part of Amazonas state, and C. (Chimarrita) heppneri Blahnik 1997 is recorded for the first time in northern Brazil.

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New species of Spartiella and Legeriosimilis from mayflies and other arthropod-associated trichomycetes from Nova Scotia, Canada

Botany ◽

10.1139/b2012-080 ◽

2012 ◽

Vol 90 (12) ◽

pp. 1195-1203 ◽

Cited By ~ 7

Author(s):

Merlin M. White ◽

D.B. Strongman

Keyword(s):

New Species ◽

Nova Scotia ◽

Growth Pattern ◽

Aquatic Insects ◽

Unusual Feature ◽

Ecological Group ◽

Corophium Volutator ◽

Potential Significance ◽

Amphipod Crustacean ◽

Freshwater Insects

The digestive tracts of non-predaceous, aquatic insects and other arthropods living in moist habitats harbour a group of fungal and protistan microorganisms known as trichomycetes or “gut fungi”. A former class of Zygomycota, “trichomycetes” now refers to an ecological group of gut microbes. This report adds to the growing inventory of gut fungi that have been described from Atlantic Canada, with two new fungal trichomycetes, Legeriosimilis hiemalis sp. nov. Strongman and M.M. White and Spartiella aurensis sp. nov. Strongman and M.M. White, both from Ephemeroptera (mayfly) nymphs. Legeriosimilis hiemalis is now the fourth of seven known species of the genus to be recorded only from Canadian sites. Spartiella aurensis displays an unusual feature, with thalli apparently able to grow from the hindgut back into the midgut of its host, a growth pattern not typically observed in other gut fungi. The potential significance of this development is discussed. Despite the focus on immature freshwater insects and their habitats, we also record a species of Orchesellaria from Collembola (springtails) and Astreptonema corophii from the amphipod crustacean Corophium volutator.

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Dragonflies and damselflies (Insecta: Odonata) from a Cerrado area at Triângulo Mineiro, Minas Gerais, Brazil

Biota Neotropica ◽

10.1590/1676-0611-bn-2018-0609 ◽

2019 ◽

Vol 19 (1) ◽

Cited By ~ 2

Author(s):

Lucas Rodrigues Borges ◽

Marcela Silva Barbosa ◽

Marco Antônio Alves Carneiro ◽

Diogo Silva Vilela ◽

Jean Carlos Santos

Keyword(s):

New Species ◽

Aquatic Insect ◽

Minas Gerais ◽

Aquatic Habitats ◽

Conservation Areas ◽

Minas Gerais State ◽

Species Lists ◽

Forest Code ◽

First Time ◽

A New Species

Abstract: Odonata is considered, among the aquatic insect orders, the second largest group in number of species. Its global richness is estimated in about 6,000 described species. The Brazilian richness represents around 14% of the world's odonatofauna, however, the knowledge on Brazilian dragonflies distribution is still poor. This study purpose an inventory of the dragonflies species present in aquatic habitats from a Preserved Area according to the Brazilian Forest Code, located in the Cerrado biome at Triângulo Mineiro, Minas Gerais. In the dry season, from April to June of 2017, we collected 680 specimens belonging to 36 species and six families. Among the collected species, Elasmothemis williamsoni was observed by the first time in Minas Gerais State, and we also found a new species of Tigriagrion (Zygoptera: Coenagrionidae) which is being described by taxonomists. Considering the fast agricultural advance over natural Cerrado systems, species lists can be important to define priority conservation areas for odonate species.

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Trichomycetes associated with insects in lotic habitats (streams) within the Halifax Regional Municipality, Nova Scotia, Canada

Botany ◽

10.1139/cjb-2012-0237 ◽

2013 ◽

Vol 91 (6) ◽

pp. 368-381 ◽

Cited By ~ 2

Author(s):

R.T. William ◽

D.B. Strongman

Keyword(s):

Nova Scotia ◽

Aquatic Insects ◽

Original Description ◽

Published Data ◽

Ecological Group ◽

Site Specificity ◽

Eastern Canada ◽

Lotic Habitats ◽

Terrestrial Habitats

Reported from marine, freshwater, and terrestrial habitats, trichomycetes are an ecological group of both fungi and protists that colonize the guts of insects, crustaceans, and millipedes. Lotic sites (streams, rivers) are a rich source of hosts and their trichomycetes. As part of a larger study of trichomycetes from different aquatic habitats within the Halifax Regional Municipality in Nova Scotia, Canada, one stream from each of three separate watersheds was sampled for aquatic insects, and their guts were dissected and examined for microscopic trichomycetes. Over the course of 17 months, 24 species of trichomycetes were collected including the following four new species: Glotzia gemina sp. nov. R.T. William and Strongman from a mayfly (Baetidae); Stachylina tanysoma sp. nov. R.T. William and Strongman; Smittium ampliboja sp. nov. R.T. William and Strongman; and Smittium insolitum sp. nov. R.T. William and Strongman, all recovered from dipteran (Chironomidae) hosts. New continental records were established for three species including Smittium pusillum Manier & Coste and Stachylina euthena Manier & Coste, both originally described from France, and Smittium nodifixum Strongman & Shengquan Xu previously known only from China. A new regional geographical record for Pennella arctica Lichtw. & M.C. Williams is reported and 17 other species previously known from eastern Canada were recorded. Pteromaktron timberleaense R.T. William & Strongman was described by us from Timberlea, Nova Scotia, but at the time no sexual spores (zygospores) were seen. In the collections reported in this paper, zygospores were found so the original description is emended to include the zygospore features for this species. This report adds to the published data on trichomycetes from Nova Scotia that have appeared over the last 10 years and highlights the significance of long-term sampling in cataloguing the diversity of this group of insect associated microorganisms. We also present some data on seasonal variation in trichomycete occurrence and comment on site specificity in the trichomycetes we collected.

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A new black fly species of Simulium (Simulium) (Diptera: Simuliidae) from Taiwan

Zootaxa ◽

10.11646/zootaxa.4422.1.9 ◽

2018 ◽

Vol 4422 (1) ◽

pp. 141

Author(s):

HIROYUKI TAKAOKA ◽

YAO-TE HUANG

Keyword(s):

New Species ◽

Dorsal Surface ◽

Species Group ◽

Pupal Exuviae ◽

Black Fly ◽

The Third ◽

Intraspecific Variations ◽

First Time

A new black fly species, Simulium taichungense, is described on the basis of one female, one male and two pupal exuviae from Taiwan. This new species is placed in the S. crocinum species-group of Simulium (Simulium) (Diptera: Simuliidae). It is characterized by the pupal gill with six unpigmented short filaments and pupal abdomen with distinct spine-combs on the dorsal surface of segments 7–9, by which it is easily distinguished from most species in the S. crocinum species-group including two species from Taiwan: Simulium serenum Huang & Takaoka and S. ufengense Takaoka. It is the third species of the S. crocinum species-group from Taiwan. In addition, the male of S. serenum is described for the first time, and intraspecific variations in a few features of the male of S. chungi Takaoka & Huang of the S. chungi species-group are noted.

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New species of Smittium and Stachylina and other trichomycetes in larval Diptera from streams in Nova Scotia, Canada 1This paper is dedicated to Jo-Ann Frost, one of the first students of these fungi in Nova Scotia, and to the numerous other undergraduates who have engaged with us in our studies of gut fungi, not only in the province, but wherever our studies have taken us.

Botany ◽

10.1139/b2012-081 ◽

2012 ◽

Vol 90 (12) ◽

pp. 1204-1219 ◽

Cited By ~ 5

Author(s):

Merlin M. White ◽

D.B. Strongman

Keyword(s):

New Species ◽

Nova Scotia ◽

The Other ◽

Atlantic Canada ◽

Ecological Group ◽

Eastern Canada ◽

Species Inventory ◽

Terrestrial Habitats ◽

Protistan Species ◽

First Time

The guts of non-predaceous invertebrates in aquatic and moist terrestrial habitats are often colonized by an ecological group of microorganisms called trichomycetes. Taxonomically, these endobionts are currently a diverse, polyphyletic assemblage including both zygomycetous fungi as well as protistan species. Trichomycetes are worldwide in distribution and are from varied habitats, but the species inventory of gut fungi from hosts in Canada is far from complete. We summarize the findings from our earliest surveys (from 1997 to 2005) and collections of candidate dipteran hosts in Nova Scotia. Nine new species of gut fungi are added to the inventory list, including the following seven Smittium spp.: Smittium aggregatum, Smittium gronthidium, Smittium papillum, Smittium pavocaudatum, Smittium radiculans, Smittium sparsum, and Smittium verticillatum, and the following two Stachylina spp.: Stachylina brevicellaris and Stachylina subgrandis. Four of the other 13 Harpellales, Pennella digitata, Smittium megazygosporum, Stachylina penetralis, and Zancudomyces culisetae are reported for the first time in Atlantic Canada. Also recorded is Paramoebidium curvum, with many more specimens of this genus from various locations and hosts included as Paramoebidium spp. only. We suggest that future collections of Diptera, to further document and discover trichomycetes, are warranted across the varied host habitats that abound not only in eastern Canada but the rest of the country as well.

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Trichomycetes from Newfoundland, including Gros Morne National Park

Botany ◽

10.1139/b10-073 ◽

2010 ◽

Vol 88 (12) ◽

pp. 1011-1022 ◽

Cited By ~ 9

Author(s):

D. B. Strongman

Keyword(s):

New Species ◽

North America ◽

Aquatic Insects ◽

National Park ◽

New Records ◽

Atlantic Canada ◽

East And West ◽

Three New Species ◽

First Time

Twenty-one taxa of trichomycetes are recorded from aquatic insects collected from sites on the east and west coasts of Newfoundland. Three new species, Smittium colboi Strongman sp. nov., Smittium georgense Strongman sp. nov., and Stachylina forantipes Strongman sp. nov., are described. Spartiella barbata Tuzet & Manier ex Manier is reported for the first time in North America, and six species are new geographic records for Newfoundland. Of these six, three are new records for Atlantic Canada. Pennella hovassi Manier ex Manier was recovered from sites in eastern Newfoundland, and taxonomically important features of this and other species in the genus are discussed.

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A new species of Chimarra Stephens 1829 (Trichoptera: Philopotamidae) and new caddisfly records from Rio Grande do Norte State, Brazil

Zootaxa ◽

10.11646/zootaxa.4885.1.6 ◽

2020 ◽

Vol 4885 (1) ◽

pp. 99-106

Author(s):

LARISSA L. QUEIROZ ◽

EVERTON S. DIAS ◽

ADOLFO R. CALOR

Keyword(s):

New Species ◽

Aquatic Insects ◽

Rio Grande ◽

Northeastern Brazil ◽

Dorsal Margin ◽

General Shape ◽

Cosmopolitan Distribution ◽

The North ◽

First Time ◽

A New Species

Trichoptera is the largest order of exclusively aquatic insects, comprising more than 16,000 described species with cosmopolitan distribution. There are about 800 species recorded from Brazil so far, mostly from the North, Southeast, and South regions. In Northeastern Brazil, the state of Rio Grande do Norte has only one Trichoptera species recorded so far (Oecetis excisa). Here, Chimarra (Chimarra) potiguar n. sp. is described and illustrated. The new species can be easily distinguished from its congeners by the following features: Segment X has its mesal lobe elongate, sub-rectangular; lateral lobes long and rounded apically, dorsal margin with subapical invagination; the apex of each inferior appendage has a pronounced apicodorsal acute projection, and the phallotremal sclerite complex is curved, with small spines dorsally. Chimarra (C.) potiguar is morphologically similar to Chimarra (Chimarra) bidens, but the new species differs from it by the length and shape of the mesal lobe and lateral lobes of segment X, and by general shape of the basal regions of inferior appendages. Five additional caddisfly species are recorded for the first time from Rio Grande do Norte state: three in Hydropsychidae (Leptonema sparsum, Macrostemum hyalinum, and Smicridea (Smicridea) palifera) and two in Polycentropodidae (Cyrnellus fraternus and Cernotina bibrachiata).

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Trichomycetes occurring in both lentic (lake) and lotic (stream) habitats within the Halifax Regional Municipality, Nova Scotia, Canada

Botany ◽

10.1139/cjb-2012-0238 ◽

2013 ◽

Vol 91 (6) ◽

pp. 382-402 ◽

Cited By ~ 4

Author(s):

R.T. William ◽

D.B. Strongman

Keyword(s):

New Species ◽

Nova Scotia ◽

Habitat Preference ◽

Aquatic Insect ◽

Ecological Group ◽

Frequency Of Occurrence ◽

Aquatic Habitats ◽

Insect Larvae ◽

Chironomidae Larvae ◽

Aquatic Insect Larvae

Trichomycetes are an ecological group of fungi and protists found inside the gut lumen of aquatic insect larvae and have been reported virtually everywhere trichomycetologists have looked for them. Trichomycetes are common in freshwater aquatic habitats, both lentic and lotic, though lentic habitats have been explored less frequently. An inventory of trichomycetes inhabiting both stream (lotic) and lake (lentic) habitats was conducted within the Halifax Regional Municipality, Nova Scotia, Canada, including one site at the interface where a stream emptied into a lake. Twenty-six species of trichomycetes were collected from both lotic and lentic sites, nine of which are new species, all isolated from midge (Chironomidae) larvae. These are as follows: Smittium adaiosporum sp. nov. R.T. William and Strongman, Smittium cryptancora sp. nov. R.T. William and Strongman , Smittium petilum sp. nov. R.T. William and Strongman, Smittium peculiare sp. nov. R.T. William and Strongman, Stachylina abundans sp. nov. R.T. William and Strongman, Stachylina extensiva sp. nov. R.T. William and Strongman, Stachylina infrequens sp. nov. R.T. William and Strongman, Stachylina somnisimilis sp. nov. R.T. William and Strongman, and Stachylina uranus sp. nov. R.T. William and Strongman. In addition, a new continental record for Smittium hecatei L.G. Valle & Santam. previously reported from Spain and new regional geographic records for Smittium minutisporum Lichtw., Siri & M.M. White and Smittium mucronatum Manier & Mathiez ex Manier are documented. In addition, 14 other trichomycetes previously reported from Atlantic Canada were recorded and these included both harpellid fungi and protists in the genus Paramoebidium. Insects from the orders Diptera, Ephemeroptera, and Plecoptera were all found to contain trichomycetes. Data on the frequency of occurrence and the habitat preference for some gut fungi are discussed.

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Diatoms of the genus Navicula of Lake Teletskoye (Altai) and some rivers of its basin

Novosti sistematiki nizshikh rastenii ◽

10.31111/nsnr/2019.53.2.255 ◽

2019 ◽

Vol 53 (2) ◽

pp. 255-278

Author(s):

D. A. Chudaev

Keyword(s):

New Species ◽

Diatom Species ◽

Lake Teletskoye ◽

First Time ◽

One New Species

As a result of study of 18 samples, collected in Lake Teletskoye and inflowing rivers in 1992–1995, 34 diatom species of the genus Navicula Bory were found. Among them 21 taxa are new for the studied region, 7 species (Navicula arkona, N. hangaica, N. cf. pseudoreinhardtii, N. ricardae, N. scaniae, N. schweigeri, N. suecicarum) are recorded for the first time in Russia. One new species (N. pseudoharmoniae sp. nov.) is described. It is compared with N. harmoniae and N. digitoconvergens.

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