Two new species of Astrothelium (Trypetheliaceae) with amyloid ascospores inhabiting the canopy of Quercus humboldtii trees in Colombia

Phytotaxa ◽  
2021 ◽  
Vol 508 (2) ◽  
Author(s):  
DIEGO SIMIJACA ◽  
ROBERT LÜCKING ◽  
BIBIANA MONCADA

Subandine and high Andean forests are often dominated by oak trees and these are recognized as suitable phorophytes for diverse epiphyte communities. Among the latter, lichens in the upper strata appear to be understudied. Here, we report the discovery of two new species of Astrothelium (Trypetheliaceae), a diverse genus of tropical crustose lichens, both with the unusual feature of muriform, amyloid ascospores. Astrothelium mordonialensis is characterized by an olive-green thallus with solitary ascomata producing muriform and amyloid ascospores with tightened center and A. rogitamae by a light brownish to greenish grey thallus with yellow pigmented solitary ascomata, producing muriform and amyloid ascospores.

Nematology ◽  
2021 ◽  
pp. 1-21
Author(s):  
Natsumi Kanzaki ◽  
Hayato Masuya ◽  
Keiko Hamaguchi

Summary Two new Neomisticius species, typologically and phylogenetically close to each other, are described and illustrated from dead Quercus trees and an ambrosia beetle, Platypus quercivorus. The two species share some stylet morphological characteristics, namely, they both possess a long conus occupying more than half of the total stylet length, a long crustaformeria composed of more than 160 cells (eight rows of more than 20 cells each), and a short and broad female tail with a digitate tip. They are distinguished from each other by N. variabilis n. sp. having a wide, spindle-shaped male bursa with a blunt terminus and N. platypi n. sp. having an oval bursa with a rounded terminus. In addition, the males and females of both species have three large rectal glands and the posterior end of the male testis (distal end of the vas deferens) bears three cells that seemingly function as a valve between the vas deferens and the cloacal tube. These characteristics have not been reported in other tylenchids. Currently, the genus contains only three species: the two new species and N. rhizomorphoides, which has a normal stylet with a short conus, a short crustaformeria, and lacks rectal glands and valve cells in the vas deferens. Therefore, the two new species are readily distinguished from N. rhizomorphoides and, based on the previous definition, may even represent a new genus. However, considering their phylogenetic closeness and biological similarities (e.g., association with ambrosia beetles), the generic definition of Neomisticius was emended to include these new species.


Acarologia ◽  
2020 ◽  
Vol 60 (3) ◽  
pp. 595-606
Author(s):  
Sarina Seyedein ◽  
Vahid Rahiminejad ◽  
Ahmad Nadimi

Two new species of the microdispid mites (Acari: Microdispidae) phoretic on Lucanus ibericus are described from Iran: Premicrodispus gorganiensis Rahiminejad and Seyedein sp. nov. and Neomicrodispus lucani Rahiminejad and Seyedein sp. nov. The mites were collected from forests with Hornbeam trees (Carpinus spp.) and Oak trees (Quercus spp.) in Gorgan, northern Iran. The distribution of the heterostigmatic mites on lucanid beetles is reviewed. Also, a key to species of the Neomicrodispus is provided.


Phytotaxa ◽  
2020 ◽  
Vol 458 (2) ◽  
pp. 167-172
Author(s):  
CHAO ZHANG ◽  
ANDRÉ APTROOT ◽  
HUA-JIE LIU ◽  
SHU-HUA JIANG

The humid tropical and subtropical forests in South China harbour a rich diversity of crustose lichens. As a result of taxonomic studies of Anisomeridium, two species new to science are described. Comparisons and discussions with similar species are given. In addition, a key to the species of Anisomeridium in China is also provided.


Phytotaxa ◽  
2020 ◽  
Vol 468 (2) ◽  
pp. 203-213
Author(s):  
KARINNE SAMPAIO VALDEMARIN ◽  
VINICIUS CASTRO SOUZA ◽  
FIORELLA F. MAZINE

During our studies on Eugenia of Espírito Santo state, Brazil, two new species came out of our attention being here described, illustrated and compared morphologically with their similar species. Eugenia mestrealvarensis can be easily recognised by its clusters of fascicules on trunk with pedicellate flowers, an unusual feature among the species of the genus, and E. penduliflora by its two-flowered raceme with later vegetative proliferation with pendular pedicels. Both species are evaluated as critically endangered following IUCN red list criteria, being E. mestrealvarensis restricted to the Área de Proteção Ambiental Estadual de Mestre Álvaro, and E. penduliflora to the Reserva Natural Vale, in Espírito Santo state.


2013 ◽  
Vol 45 (5) ◽  
pp. 657-664 ◽  
Author(s):  
Aline Anjos MENEZES ◽  
Amanda Barreto XAVIER-LEITE ◽  
Katia Almeida de JESUS ◽  
André APTROOT ◽  
Marcela Eugenia da Silva CÁCERES

AbstractTwo new species of the small genus Crypthonia are described from the Chapada do Araripe, an isolated table mountain in the state of Ceará, in NE Brazil. Both share the thallus and ascoma organization with the other known species of the genus, and are mainly characterized by differences in ascospores and chemistry. Crypthonia lichexanthonica A. A. Menezes, M. Cáceres & Aptroot has 7-septate ascospores and contains lichexanthone in the thallus, and C. submuriformis A. A. Menezes, M. Cáceres & Aptroot has (sub)muriform ascospores and also contains lichexanthone, but only in the ascigerous areas. A key to all known species of the genus Crypthonia is provided, in which Crypthonia olivacea Frisch & G. Thor is newly reported from Argentina. The new species Syncesia byssolomoides A. A. Menezes, M. Cáceres & Aptroot is described from the same area. It also has a thin byssoid thallus, but differs by the narrowly fusiform ascospores and by containing psoromic acid. It differs from all Syncesia species by the absence of carbonization and the presence of psoromic acid. The epiphytic lichen flora in this Caatinga forest area is dominated by crustose lichens, with Graphis and Polymeridium as the most speciose genera.


Zootaxa ◽  
2007 ◽  
Vol 1445 (1) ◽  
pp. 57-64 ◽  
Author(s):  
ŞULE BARAN ◽  
NUSRET AYYILDIZ

Two new species of soil mites (Acari: Oribatida), Machuella turcica sp. nov. (Machuellidae) and Oxyoppia (Dzarogneta) ilicaensis sp. nov. (Oppiidae) are described from Turkey. They were collected from moss on rocks and litter under oak trees respectively. A key to the known species of the genus Machuella Hammer, 1961 is provided.


Phytotaxa ◽  
2014 ◽  
Vol 183 (3) ◽  
pp. 159 ◽  
Author(s):  
Carlos L. Leopardi-Verde ◽  
Guillermo A. Reina-Rodríguez ◽  
Germán Carnevali ◽  
Gustavo A. Romero-González

Two new species of Encyclia are proposed, E. silverarum and E. parkeri. Both species belong in the Encyclia chloroleuca complex, conformed also by E. chloroleuca, E. elegantula, and E. peraltensis, among others. Encyclia silverarum is known only from Panama. This species is very similar to Encyclia chloroleuca, but it is distinguished by the color of its sepals and petals (pale green-yellowish brown) and the falcate and proportionally short (<0.60 vs. >0.80 cm long) side lobes of the labellum. Encyclia parkeri, known only from Colombia (Department of Valle del Cauca), also is similar to Encyclia chloroleuca; however, it is distinguished by its flowers with olive-green to ocher petals and sepals, labellum creamy white, with the central lobe with many keels (at least three), all warty and usually slightly tinged red-purple.


2020 ◽  
Vol 45 (2) ◽  
pp. 340-348
Author(s):  
James Lucas da Costa-Lima ◽  
Earl Celestino de Oliveira Chagas

Abstract—A synopsis of Dicliptera (Acanthaceae) for Brazil is presented. Six species are recognized: Dicliptera ciliaris, D. sexangularis, and D. squarrosa, widely distributed in South America; D. purpurascens, which ranges from the North Region of Brazil (in the state of Acre) to eastern Bolivia; D. gracilirama, a new species from the Atlantic Forest of northeastern Brazil; and D. granchaquenha, a new species recorded in dry and semideciduous forests in Bolivia and western Brazil, in the state of Mato Grosso do Sul. Furthermore, we propose new synonyms and designate lectotypes for eleven names. An identification key to the six accepted Dicliptera species in Brazil is provided.


2020 ◽  
Vol 45 (1) ◽  
pp. 75-84
Author(s):  
Llorenç Sáez ◽  
Javier López-Alvarado ◽  
Pere Fraga ◽  
Regina Berjano ◽  
M. Ángeles Ortiz ◽  
...  

Abstract—Two new diploid species, Aira minoricensis and Aira hercynica, are described and illustrated, along with chromosome counts, risk assessment, distribution and habitat, phenology, and comparisons with morphologically similar species. A comparative table and a key for the species of Aira for the Iberian Peninsula and the Balearic Islands are provided to assist in the identification of these overlooked species, and their relationships to other taxa are discussed.


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