scholarly journals The karyotype and morphology of Chironomus brevidentatus sp. n. (Dipt., Chironomidae). A species with a "salinarius type" larva from northern Finland

1998 ◽  
Vol 9 (4) ◽  
pp. 225-236
Author(s):  
Mauri Hirvenoja ◽  
Paraskeva Michailova

The karyotype and morphology of Chironomus brevidentatus sp. n. has been described from the Lokka reservoir in northern Finland. The species belongs to the thummi complex with the chromosome arm combination AB, CD, EF and G. The relationships between the karyotypes of C.brevidentatus, C. major Wülker & Butler, C. neocorax Wülker and Butler, C. tardus Butler, and "Chironomus sp. 2n = 6, Lokka" are described. The external morphology has been compared with the suggested nearest relatives or otherwise similar species. The known ecological conditions in the type locality are discussed.

2015 ◽  
Vol 42 (2) ◽  
pp. 226-235 ◽  
Author(s):  
G. N. H. Waller

Eight species of mesoplodont whales (genus Mesoplodon Gervais, 1850) named during the nineteenth century are based on valid descriptions. A checklist with the original description and type material for each of these species is provided. Additional data given may include type locality and illustrative sources, type material holding institution and type registration number(s). The only type specimen for which a record of external morphology was published relates to the 1803 stranding of Sowerby's beaked whale (Mesoplodon bidens).


Zootaxa ◽  
2017 ◽  
Vol 4254 (3) ◽  
pp. 357 ◽  
Author(s):  
DANIEL CHIRIVI JOYA

We present the description of Phrynus calypso sp. nov. from Trinidad and Tobago, and Venezuela This species is very similar to Phrynus pulchripes (Pocock), however after examining Colombian specimens of P. pulchripes (ca. type locality), many differences were found. Characters commonly used in diagnosis of Phrynus species are variable and make identification difficult. Differences in a few structures, like pedipalpal spines, could not be enough to provide a useful diagnosis.  It is necessary to account for variation of similar species in conjunction, and select non overlapping groups of characters. Observations in the variation in both species are presented, pointing out sources of confusion, and suggesting alternative characters to support diagnoses. At the moment, details about variation in many species in Phrynus, like that of P. pulchripes, are poorly known, and for this reason a redescription is provided. 


Zootaxa ◽  
2021 ◽  
Vol 4984 (1) ◽  
pp. 98-107
Author(s):  
GONZALO GIRIBET ◽  
CAITLIN M. BAKER ◽  
DAMIEN BROUSTE

New Caledonia has an endemic opiliofauna with two named species of Triaenonychidae, 17 Troglosironidae and eight Zalmoxidae. The recent finding of Neopilionidae on Grande Terre was thus surprising, and required the formal description of a new genus, which we undertake here. Martensopsalis gen. nov. is characterized by a small unsclerotized body with a unique palp with a pointed basal apophysis on the ventral side of the femur and with a distal apophysis on the prolateral side of the patella. The distinct external morphology, simple penis and unique phylogenetic position justify the erection of the new genus with Martensopsalis dogny spec. nov. as its type species. In addition to the type locality we report several other localities of putative congeneric, yet undescribed species. 


Zootaxa ◽  
2019 ◽  
Vol 4585 (1) ◽  
pp. 100 ◽  
Author(s):  
VINÍCIUS J. C. REIS ◽  
MÁRIO DE PINNA

The trichomycterid catfish species Trichomycterus alternatus (Eigenmann, 1917) and Trichomycterus zonatus (Eigenmann, 1918) are reportedly among the most pervasive species in mid- to high-elevation coastal streams of Southeastern Brazil. Despite their apparent abundance and ecological ubiquity, the applicability of their names is still uncertain. Examination of the type material of the two species reveals that part of the confusion stems from a mixing of species in the T. zonatus type series. Other issues relate to reports of character conditions in the respective species that do not actually correspond to the situation in their type specimens. Such situation triggered a long-lasting chain of taxonomic misinterpretations and erroneous identification protocols and traditions so that even the taxonomic distinctiveness of the two species is nebulous. That situation is disentangled in detail on the basis of new information on the holotypes and remaining type specimens of each species by classical and new (stereo triplet radiography) morphology analyses for data acquisition. Results show that the type specimens of T. alternatus and T. zonatus differ pronouncedly in several traits of internal and external morphology and represent markedly distinct taxa. The latter species does not correspond to most identifications in the literature and is, in fact, endemic to the region of its type locality. We also clarify and map the reported localities of the type material and offer comments on the validity of T. alternatus and T. zonatus, along with that of possibly related forms. 


Zootaxa ◽  
2007 ◽  
Vol 1653 (1) ◽  
pp. 57-68 ◽  
Author(s):  
EIJIROH NISHI ◽  
KATSUHIKO TANAKA ◽  
YOSHIMI FUJIOKA ◽  
MASANORI SATO

Sigambra hanaokai (Kitamori 1960), originally described from Japan, was regarded as a junior synonym of S. tentaculata (Treadwell 1941), described from the Northwestern Atlantic Ocean. We studied Japanese materials and compared them with a recent redescription of S. tentaculata and with S. phuketensis Licher and Westheide, 1997, another similar species. The validity of S. hanaokai is confirmed. In order to avoid any further confusion, we redescribe the species based on topotype specimens collected in Hiroshima, Seto Inland Sea, Japan, the type locality of the species. Additionally, we emphasize the differences between S. hanaokai and S. phuketensis, particularly in regard to the relative length of the median antenna. Lastly, we summarize the recent systematic status of all species of the genus, and provide a table summarizing taxonomic characters.


Zootaxa ◽  
2008 ◽  
Vol 1675 (1) ◽  
pp. 67
Author(s):  
RALF HENDRIX ◽  
ANNA GAWOR ◽  
MIGUEL VENCES ◽  
THOMAS ZIEGLER

Based on recent mtDNA analyses, Microhyla fissipes Boulenger was removed from the synonymy  with M. ornata (Duméril & Bibron) by Matsui et al. (2005),where previously it had been placed by Parker (1934). M. fissipes inhabits southern China (type locality: Taiwan) and large parts of Southeast Asia, including the north-ern Malay Peninsula (Matsui et al. 2005). As a contribution to future comprehensive revisions of larval mor-phology of Microhyla Tschudi, we here provide a detailed description of external morphology of reliably identified tadpoles recently collected from the Truong Son mountain range, central Vietnam.


Zootaxa ◽  
2020 ◽  
Vol 4790 (2) ◽  
pp. 375-386
Author(s):  
SHALVA BARJADZE ◽  
ROSANNA GIORDANO ◽  
FELIPE SOTO-ADAMES

Plutomurus jordanai sp. nov. from Zeda Kvilishori Cave (Tskaltubo Municipality, Imereti region, Western Georgia) is described, illustrated and differentiated from other morphologically similar species‒‒P. kelasuricus Martynova, 1969 and P. eristoi Barjadze, Baquero, Soto-Adames, Giordano & Jordana, 2016. In addition, morphological characters omitted or erroneously provided in the original description of Plutomurus birsteini Djanashvili & Barjadze, 2011 are described and illustrated from the specimen sampled in the type locality‒‒Sakishore Cave (Racha region, Western Georgia). An identification key to the species of the genus Plutomurus reported from the Caucasus is presented. A list of the invertebrate communities for Zeda Kvilishori and Sakishore caves is provided. 


Zootaxa ◽  
2005 ◽  
Vol 1088 (1) ◽  
pp. 1
Author(s):  
EDUARDO G. VASCONCELOS

Four nominal southern Brazilian species of Gonyleptinae are studied: Geraecormobius clavifemur (Mello-Leit„o, 1927), Mischonyx meridionalis (Mello-Leit„o, 1927), Ariaeus tuberculatus S¡¥rensen, 1932 and a new species of Geraecormobius Holmberg, 1887. Mischonyx meridionalis and Ariaeus tuberculatus are herein considered junior subjective synonyms of Geraecormobius clavifemur. Ariaeus S¡¥rensen, 1932 is herein considered a junior subjective synonym of Geraecormobius. New records are recorded for G. clavifemur, hitherto known only from the type locality, Blumenau, Santa Catarina state, Brazil. Geraecormobius reitzi n. sp., is described from Santa Catarina state, Brazil and considered closest to G. clavifemur, based upon general aspects of external morphology. The two species occur at different altitudes. G. clavifemur inhabits the lower part of the Atlantic Plateau of Santa Catarina at 0 to 300 m, whereas Geraecormobius reitzi n. sp. occurs at higher elevations.


Zootaxa ◽  
2007 ◽  
Vol 1498 (1) ◽  
pp. 35-43 ◽  
Author(s):  
JONH JAIRO MUESES-CISNEROS

Two new species of Eleutherodactylus from the Valle de Sibundoy, Putumayo, Colombia, are described. These species can be distinguished easily from similar species by external morphology and by their distinctive coloration patterns. This report demonstrates that southwestern Colombia continues to be one of the least studied regions in terms of its amphibian fauna.


Zootaxa ◽  
2010 ◽  
Vol 2514 (1) ◽  
pp. 1 ◽  
Author(s):  
STEPHEN MAHONY

The systematic status of many Asian Draconine agamids has long been in dispute. Herein, four such species, Mictopholis austeniana, Japalura kaulbacki, Calotes kingdonwardi and Salea kakhienensis are examined on the basis of external morphological characters. The monotypic genus Mictopholis was compared to other Asian Draconine genera and found to be indistinguishable from Pseudocalotes, with which it is here considered a synonym. Japalura kaulbacki is compared to other members of the genus Japalura as well as other similar species. Based on external morphology it is found to be separable from Japalura and conspecific with Calotes kingdonwardi, under which it is considered a junior subjective synonym. Salea kakhienensis is redefined morphologically based on nontype material and shown to represent a close member of this group. C. kingdonwardi is most similar to Salea kakhienensis both of which share a complement of characters with M. austeniana. The generic placement of S. kakhienensis relative to Salea, both with strongly overlapping synapomorphic characters is briefly discussed with respect to biogeographical implications that strongly support the exclusion of this species from the genus. Mictopholis austeniana, Calotes kingdonwardi and Salea kakhienensis are redescribed in detail and transferred to Pseudocalotes. The inclusion of these three species provides a generic range extension of approximately 800 km north-west of the previously considered range. The nomen Oriocalotes discolor is considered a primary objective synonym of Pseudocalotes kakhienensis new comb. and the systematic status of Calotes kingdonwardi bapoensis is briefly discussed.


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