Tranzschelia asiatica sp.nov. and its taxonomic relationship to Tranzschelia arthurii

1994 ◽  
Vol 72 (8) ◽  
pp. 1178-1186 ◽  
Author(s):  
Yoshitaka Ono

Prunus grayana (subg. Padus) was found to serve as the uredinial-telial host of two distinct Tranzschelia species in Japan. Tranzschelia pruni-spinosae has been known to occur on P. grayana, and the other species was previously overlooked. The latter fungus was experimentally proven to form its spermogonial and aecial stages on Hepatica nobilis var. japonica f. variegata and f. magna. The fungus was similar in morphology and host relationships to Tranzschelia arthurii, whose spermogonial and aecial stages occur on H. nobilis var. acuta and uredinial and telial stages on Prunus serotina and Prunus virginiana (subg. Padus) and Prunus americana (subg. Prunophora) in North America. However, the spores at all stages in the life cycle of the Japanese fungus were significantly smaller than those of the North American fungus. Because of this, a new species, Tranzschelia asiatica, was proposed for the geographically separated fungus. This species is expected to occur in East Asia outside of Japan, but this is not yet confirmed. Key words: rust fungus, Uredinales, Rosaceae, Prunus, Ranunculaceae, Hepatica.

Zootaxa ◽  
2009 ◽  
Vol 2021 (1) ◽  
pp. 57-65 ◽  
Author(s):  
JOHN S. BUCKERIDGE

A new deep-sea stalked barnacle, Ashinkailepas kermadecensis sp. nov. has been recovered from a cold-water seep at depths of 1165 metres in the vicinity of the Kermadec Ridge to the northeast of the North Island, New Zealand. There are now two species of Ashinkailepas—the other, Ashinkailepas seepiophila Yamaguchi, Newman & Hashimoto, 2004, occurs in deep, cold seeps off central Japan. As there are two species within Ashinkailepas, formal diagnoses are provided for both taxa.


1963 ◽  
Vol 70 (1) ◽  
pp. 17-21
Author(s):  
Merrill H. Sweet

In the course of current work upon the biology and ecology of the Rhyparochrominae of New England, a new species of Ligyrocoris was discovered. The species runs in Barber's (1921) key to the couplet separating diffusus (Uhler) from sylvestris (L.), but is distinct from either species. While the new species is closely related to these species, it is also quite close to L. depictus which is separated out in a different part of Barber's key.These four closely related species are sympatric in New England, although they are markedly different in their overall distribution. The habitat preferences and life cycles of the species are quite different (Sweet, unpublished). The habitat of the new species described below is most unusual for the genus. The greater part of the type series was collected along the margin of a small pond where sedge clumps were standing in the water among occasional exposed rocks rather than in relatively dry fields or slope habitats where the other species occur. The species feeds upon the seeds of the sedge, Carex stricta Lam, and its life cycle is apparently adapted to that of the sedge, which fruits in late May and June. The insect becomes adult in mid-June and lays eggs until mid-July. The eggs remain in diapause over the summer and winter and hatch in May.


Author(s):  
C.M. Howson ◽  
S.J. Chambers

A new species of Ophlitaspongia (Porifera: Microcionidae) from wave-exposed sublittoral rock in the north-east Atlantic is described and compared to the two other species recorded from the genus in the north-east Atlantic. The species known as Ophlitaspongia seriata is considered to be a junior synonym of Halichondria panicea. Consequently, the name O. papilla has been reinstated. The other recorded species O. basifixa, is from deep water. Ophlitaspongia basifixa has characters which differentiate it from Ophlitaspongia sp. nov. The genus Ophlitaspongia has been separated from related genera and reinstated for species in the North Atlantic.


Zootaxa ◽  
2019 ◽  
Vol 4563 (1) ◽  
pp. 135 ◽  
Author(s):  
BENNY K.K. CHAN ◽  
SE-JONG JU ◽  
SE-JOO KIM

A new species of eolepadid stalked barnacle, Vulcanolepas fijiensis sp. nov., was collected from a hydrothermal vent in the North Fiji Basin, Southwestern Pacific Ocean, at a depth of 1988 m. Based on morphological characteristics, this new species was distinguished from its relatives, V. osheai Buckeridge, 2000, V. parensis Southward, 2005, V. scotiaensis Buckeridge, Linse & Jackson, 2013, and V. buckeridgei Chan & Chang, 2018. Based on morphological characteristics, Vulcanolepas species are divided mainly into two groups by the size of the first mandibular tooth; the first group has a large mandibular first tooth (V. parensis, V. scotiaensis, and V. fijiensis sp. nov., the second a small mandibular first tooth (V. osheai and V. buckeridgei). The new species can be easily distinguished from V. parensis and V. scotiaensis by the length ratio of antenniform segments to robust segments of the rami of cirrus I. Vulcanolepas fijiensis sp. nov. also differs from V. parensis by the length ratio of the penis and cirrus VI (1/10 vs 1/4), and the extension the carinal apex to the tergum (extended vs not extended). Additionally, the sequence divergence of the cytochrome c oxidase 1 gene between V. fijiensis sp. nov. and the other neolepadid species (except V. parensis from its original locations) ranged from 4.2% to 14.0%. In a neighbor-joining tree, V. fijiensis sp. nov. formed an independent branch. These results infer that V. fijiensis sp. nov. is a new species, distinct from the other known neolepadids. 


1981 ◽  
Vol 59 (5) ◽  
pp. 726-734 ◽  
Author(s):  
R. Shyam

This paper deals with the morphology, reproduction, and cytology of a new species of Dysmorphococcus, viz., Dysmorphococcus sarmaii sp. nov. (Phacotaceae, Volvocales) from India. The lorica of this flagellate displays a remarkable morphological variability in nature as well as in culture under laboratory conditions. The alga is characterised by an anteriorly bilobed pentagonal lorica ornamentated with polygonal pores, a massive globose chloroplast that lacks a pyrenoid and almost completely occupys the protoplast, a prominent red stigma, two contractile vacuoles located anteriorly near the insertion of the flagella, and flagella that are equal to or a little longer than the length of the lorica. The pentagonal lorica of the present taxon differs remarkably from the broadly ovoid to globose lorica of D. variabilis Takeda, D. coccifer Korschikoff, and D. globosus Bold and Starr. The lorica of D. sarmaii is somewhat comparable in shape to D. punctatus Fott because of its bilobed anterior but differs from the latter in its ornamentation. The massive globose chloroplast lacking a pyrenoid in the present alga differs remarkably from the other species of this genus where the chloroplast possesses one or several pyrenoids. In addition, asexual reproduction, which is accomplished by division of the protoplast within the lorica, results in the production of 8–16 zoospores as compared with the earlier record of 2 and 4 zoospores in this genus. The alga is heterothallic and sexual reproduction, which was not known for the earlier described species of the genus Dysmorphococcus, takes place by isogametes produced 16–32(–64) per cell. The chromosome number recorded for D. sarmaii is n = 10.


Nematology ◽  
2008 ◽  
Vol 10 (4) ◽  
pp. 501-523 ◽  
Author(s):  
Alexander Fürst von Lieven ◽  
Walter Sudhaus

AbstractA new species of the diplogastrid genus Oigolaimella is described in colonies of termites belonging to the genus Reticulitermes from Corsica (France) and USA. Oigolaimella attenuata n. sp. males can be recognised by the conspicuous length of the ventral unkeeled part of the otherwise keeled gubernaculum and, in contrast to the other members of the genus, the fact that the lateral field of both adult stages is marked by a single line. A diagnostic key for the five species of Oigolaimella is presented. Life cycle and development, including spermiogenesis, sperm transfer, sperm competition and fertilisation are described in detail. Some interesting aberrations of the reproductive system are documented. The new species uses the preoral cavities of the termites for internal phoresis and is associated with non-pathogenic gut-inhabiting flagellates of the taxon Kinetoplastida. The heads of 76 of 117 examined termites were infested with dauer juveniles of O. attenuata n. sp. with an average of 6.4 nematodes per termite. Six additional nematode species were isolated from the bodies of the termites, particularly a species of Pristionchus and, for the first time, Halicephalobus sp., Mesorhabditis spiculigera and Rhabditella axei. Rhabpanus ossiculum was isolated from termite-inhabited wood from Corsica, the first such detection in Europe. In the course of our discussion of the literature on termite-associated nematodes, we propose the new combination Pristionchus formosianus (Poinar, Meikle & Mercadier, 2006) n. comb. (=Chroniodiplogaster formosiana).


1944 ◽  
Vol 22c (5) ◽  
pp. 251-271 ◽  
Author(s):  
A. J. Skolko

A new species of Aleurodiscus is described and designated Aleurodiscus canadensis. The basidia of this fungus are regularly two-spored, but occasionally basidia bearing three spores or rarely one spore are encountered. From the cultural and cytological evidence presented the normal life cycle may be described as follows. The cells of the subhymenium are dikaryotic with clamp connections. The young basidia are at first binucleate. Following karyogamy the fusion nucleus undergoes reduction division producing the usual tetrad of nuclei. Each spore of the two-spored basidium receives two of the four daughter nuclei. The two nuclei in these spores undergo further division while the spore is still attached or shortly after discharge, so that the mature spore contains four nuclei. Such a spore is capable of producing a mycelium bearing clamp connections. Although the majority of the spores produce mycelia with clamp connections, a spore may occasionally develop a mycelium that does not bear clamps. When such exceptional mycelia are mated in compatible combinations, dikaryotic mycelia with clamp connections are obtained. From the mating of a number of these exceptional haplonts the heterothallic and bipolar relationship is made evident. Although complete cytological information on the spores that give rise to these exceptional haploid mycelia is lacking, it is probable that these spores are originally uninucleate and that this results from the distribution of the four nuclei in a three-spored basidium in such a way that one spore receives two nuclei and the other two spores one nucleus each. The two nuceli that migrate into the normal spore, therefore, probably bear allelomorphic inter-fertility factors. If this species can be considered homothallic, the homothallism is a different type from that found in species that complete their life cycle from the development of a single uninucleate spore. The necessity for such a distinction is stressed.


2016 ◽  
Vol 91 (1) ◽  
pp. 162-178 ◽  
Author(s):  
Andrew B. Heckert ◽  
Nicholas C. Fraser ◽  
Vincent P. Schneider

AbstractWe describe a new species of the aetosaurCoahomasuchus,C.chathamensis, based on an incomplete, but largely articulated, anterior portion of a skeleton recovered from a quarry in the Upper Triassic Pekin Formation of Chatham County, North Carolina. This is only the second documented occurrence ofCoahomasuchus, with the other being the holotype ofC.kahleorumHeckert and Lucas, 1999 from the Upper Triassic Colorado City Formation of Texas. Although much of the specimen is the same size as the holotype ofC.kahleorum, the dorsal paramedian osteoderms of the North Carolina taxon are considerably (~1.3×) wider than homologous counterparts inC.kahleorum, and the ventral thoracic osteoderms are also rectangular (~1.5× wider than long), rather than square, presumably to accommodate the wider body. This is a rare instance where two articulated specimens of closely related aetosaur species are available for direct comparison of homologous osteoderms. Isolated osteoderms with similar ornamentation from the same locality indicate thatC.chathamensismay have been one of the earliest aetosaurs to attain the broad osteoderm proportions (width:length >3.5:1) otherwise known solely from later branching, spinose taxa such asTypothorax. The co-occurrence ofLucasuchusandCoahomasuchusin both North Carolina and Texas supports past correlations indicating an Otischalkian (Carnian) age for these strata and demonstrates that plesiomorphic, non-spinose aetosaur genera were not necessarily endemic to a single basin in North America.


Zootaxa ◽  
2011 ◽  
Vol 3018 (1) ◽  
pp. 21
Author(s):  
THOMAS WESENER

A new species of the previously monotypic Malagasy pachybolid genus Zehntnerobolus Wesener, 2009, Z. hoffmani new species, is described. The diagnosis of the genus Zehntnerobolus is updated and new characters of potential phylogenetic importance for the classification of Malagasy Spirobolida are described. The here described specimens are the first known representatives of Zehntnerobolus collected since 1900. The late discovery of another Zehntnerobolus is a clear indication of how little we know about the soil arthropod macrofauna of Madagascar. Particularly the eastern rainforest region and the north of Madagascar are still underexplored. The specimens were collected in the eastern montane rainforest more than 380 km south of the known distribution of the other Zehntnerobolus species. The collection method used, as well as morphological parameters of Zehntnerobolus indicate that its species live in the leaf litter of Malagasy rainforests.


Zootaxa ◽  
2018 ◽  
Vol 4504 (1) ◽  
pp. 128
Author(s):  
FARZANEH MOMTAZI ◽  
ABDOLVAHAB MAGHSOUDLOU ◽  
JEAN JUST

The first member of Cephaloecetes in the north-western part of the Indian Ocean, Cephaloecetes ungulatus sp. nov., is described from Chabahar Bay, the Gulf of Oman and Qeshm Island in the western Hormuz Strait, Iran. The new species is characterized from the other two species of genus Cephaloecetes by a unique claw-shaped ventral plate on antenna 2 article 2. 


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