Four new species of Amynthas earthworms in southeastern Vietnam (Annelida, Oligochaeta, Megascolecidae)

Zootaxa ◽  
2020 ◽  
Vol 4790 (2) ◽  
pp. 277-290
Author(s):  
TUNG T. NGUYEN ◽  
BINH T.T. TRAN ◽  
DANG H. LAM ◽  
ANH D. NGUYEN

Four new earthworm species of the genus Amynthas Kinberg, 1867 are described from southeastern Vietnam, named A. longiprostaticus sp. nov., A. dorsomorrioides sp. nov., A. minhdam sp. nov., and A. ocularius sp. nov. A. longiprostaticus sp. nov. belongs to the A. minimus group of species, characterized by spermathecal pores in 5/6. It is distinguished by small body size with length 5–7 cm, and by elongate prostate glands, which extend over more than 10 segments. A. dorsomorrioides sp. nov. belongs to the A. morrisi group, characterized by holandry and spermathecal pores in 5/6/7. It is distinguished by a dorsal location of these pores, by one pair of large genital markings presetal in xvii, and by the absence of genital markings in the spermathecal region. A. minhdam sp. nov. also belongs to the A. morrisi group, and is distinguished by a pair of genital markings located medially in xviii and by the spermathecal diverticula, which have a small seminal chamber sub-divided by constrictions into 4 or 5 parts, in chain-form. A. ocularius sp. nov. belongs to the A. gracilis group by virtue of holandry and spermathecal pores in 5/6/7/8. It is distinguished by numerous small genital markings in the male region, postsetal in xviii and presetal in xix, and arranged in a peculiar fashion reminiscent of eyeglasses connected by a bridge. With these descriptions, there are now 119 species of Amynthas known in Vietnam. 

Zootaxa ◽  
2019 ◽  
Vol 4545 (3) ◽  
pp. 389 ◽  
Author(s):  
SURANJAN KARUNARATHNA ◽  
AARON M. BAUER ◽  
ANSLEM DE SILVA ◽  
THILINA SURASINGHE ◽  
LANKANI SOMARATNA ◽  
...  

A new species of Cnemaspis Strauch, 1887 is described from Nilgala Savannah Forest in Sri Lanka. The new species is diagnosed from all other congeners by the following suite of characters: small body size (SVL< 33 mm), dorsal scales on trunk homogeneous, one pair of post mentals separated by a single small chin scale, ventral scales on trunk smooth, subimbricate, 17–19 scales across the belly. Subdigitals scansors smooth, entire, unnotched; lamellae under digit IV of pes 17 –18. Males with femoral pores on each thigh but lacking precloacal pores. Median row of subcaudals smooth, subimbricate, enlarged and in an irregular series of subhexagonal scales. This new species had been previously confused with Cnemaspis alwisi Wickramasinghe & Munidradasa, 2007. The new species differs from Cnemaspis alwisi by having 122–129 ventral scales (versus 146–152), 7–8 supralabials (versus 8–10), and relatively shorter SVL ranging between 31.5–32.9 mm (versus 37.8–39.9 mm). Further, the new species is genetically divergent from Cnemaspis alwisi, the species that it closely resembles by 13.5% and 7.8% from its sister species in the ND2 gene. The present discovery highlights the need for dedicated herpetofaunal explorations in Sri Lanka, especially the intermediate bioclimatic zone and associated cave systems and rock outcrops. 


Zootaxa ◽  
2013 ◽  
Vol 3616 (4) ◽  
pp. 345-356 ◽  
Author(s):  
JUAN M. GUAYASAMIN ◽  
ALEJANDRO F. ARTEAGA

We describe a new Pristimantis from La Libertad and Rumiloma, Reserva Mazar, Andes of Southeastern Ecuador, at elevations between 2895–3415 m. This species is assigned to the P. orestes group, from whose members it differs by its small body size (adult males ≤ 18.1 mm; adult females ≤ 23.7 mm), usually reticulated ventral pattern, and visible tympanum. The vocalization of the new species consists of a series of calls; each call is composed by a pulsed, non-modulated note in frequency, and with a dominant frequency of 3122–3171 Hz. A molecular phylogeny based on a fragment of the mitochondrial gene 12S shows that the new species is sister to Pristimantis simonbolivari.


Zootaxa ◽  
2007 ◽  
Vol 1527 (1) ◽  
pp. 59-65 ◽  
Author(s):  
MING JI ◽  
YUFENG DING ◽  
JIAN-XIU CHEN

A new species, Folsomia wanxianensis, from China (Chongqing) was described in the present paper. The new species shares some characters with F. albens Kaprus’ & Potapov 1999, such as the absence of ommatidia, sensillar formulae and small body size. However, it could be easily distinguished from F. albens by the number of laterodistal setae on the ventral tube and the number of setae on furca. It is also easily distinguished from all known species in the genus by the combination of the following characters: 4+4 laterodistal setae on the ventral tube, 10+10 dorsal setae on manubrium, 10–11 ventral and four dorsal setae on dens, and other features.


2009 ◽  
Vol 30 (2) ◽  
pp. 233-243 ◽  
Author(s):  
Gilson Rivas Fuenmayor ◽  
Paulo Passos ◽  
Cesar Barrio-Amorós

AbstractTwo new species of Atractus are described from Venezuela uplands and highlands on two northern Andean cordilleras. Atractus acheronius, known only from Sierra de Perijá, can be distinguished from congeners by having 17 dorsal scale rows, presence of preocular scales, seven upper and lower labials, seven maxillary teeth, 166 ventrals in the single female, 23 subcaudals, dorsum brown with small dark brown dots, large body size, huge body diameter, and small tail size. Atractus multidentatus, known only from north versant of the Cordillera de Mérida, can be distinguished from congeners by having 17 dorsal scale rows, eight upper and lower labials, 18 maxillary teeth, 153 ventrals in the single female, nine subcaudals, dorsum reddish brown with five longitudinal dark brown stripes, small body size, small body diameter, and small tail size. Additionally, a discussion concerning the species description of Atractus based on unique specimens is provided.


Zootaxa ◽  
2018 ◽  
Vol 4370 (5) ◽  
pp. 519 ◽  
Author(s):  
CONNI M. SIDABALOK ◽  
NIEL L. BRUCE

Two new species of Metacirolana from coral reefs in Indonesia are described and Metacirolana spinosa (Bruce, 1980) is recorded for the first time in Indonesia. Metacirolana lombok sp. nov. and Metacirolana mioskon sp. nov. show similarities with several other species of Metacirolana forming a species group within the genus, characterized by small body size (2.0–3.5 mm), smooth body surfaces, weakly produced rostrum, lack of dorsal carinae and abundant chromatophores. 


Zootaxa ◽  
2016 ◽  
Vol 4200 (1) ◽  
pp. 47 ◽  
Author(s):  
ADRIAN SMOLIS ◽  
NATALIYA KUZNETSOVA

Endonura alticola (Stach, 1951) comb. nov. is redescribed based on the type material and seven new species of the genus Endonura are described from the various parts of the Caucasus. E. paracantabrica sp. nov. can be recognized by the number of chaetae (L+So) on head and a fusion of tubercles Di and De on the first thoracic segment. Specific traits of E. aibgai sp. nov. include small body size, low number of chaetae (L+So) on head, nonogival labrum, dentate claws, and long tibiotarsal chaetae B4 and B5. E. diminutichaeta sp. nov. is characterized by an unusually short chaeta Di1on abdomen IV. E. dobrolyubovae sp. nov. can be distinguished from its congeners by notably long chaeta Ocp on head and the presence of male ventral organ. The absence of chaetae E and O on head, ogival labrum, cryptopygy and dentate claws are typical of E. cryptopyga sp. nov. E. ossetica sp. nov. is most easily recognized by an unusual shape of tubercle Af on head connected with chaetae D and E. Main characteristics of E. kremenitsai sp. nov. include the presence of chaeta E and five chaetae Dl on head. A key to all known species of the genus including the above outlined taxa is given. General remarks on distribution and possible historical biogeography of the genus are also provided. 


Herpetozoa ◽  
2021 ◽  
Vol 34 ◽  
pp. 131-140
Author(s):  
Shuo Liu ◽  
Mian Hou ◽  
Mingzhong Mo ◽  
Dingqi Rao

A new species of the genus Micryletta Dubois, 1987 is described from Yunnan Province, China, based on morphological and molecular analyses. The most obvious differences between the new species and other species of this genus are small body size, unique coloration, and relatively longer hind limbs. In 16S rRNA gene sequences, the new species is diverged from all other congeners by 3.1%–8.0%.


Zootaxa ◽  
2009 ◽  
Vol 2227 (1) ◽  
pp. 53-62 ◽  
Author(s):  
DIEGO F. CISNEROS-HEREDIA ◽  
MARIO H. YÁNEZ-MUÑOZ ◽  
H. MAURICIO ORTEGA-ANDRADE

We describe a new species of Glassfrog of the family Centrolenidae. This new taxon, Terarohyla sornozai sp. nov., is diagnosed by having a protruding snout in lateral profile, uniform green dorsal colouration in life, concealed prepollex, extensive webbing between the outer fingers, fully webbed toes, and small body size. It inhabits the Non-Seasonal Evergreen Foothill and Lowland forests in the provinces of Esmeraldas, Imbabura, and Pichincha, north-western Ecuador.


Author(s):  
Mark J. Costello ◽  
Chris S. Emblow ◽  
Bernard E. Picton

Marine species new to science continue to be discovered around Britain and Ireland. The number of marine species described each year was plotted against time for Pisces, Echinodermata, Anthozoa, Bivalvia, Decapoda, Gastropoda, Bryozoa, Tunicata, Medusozoa, Amphipoda, Porifera, Nudibranchia, Polychaeta, Copepoda, Oligochaeta, and Nematoda. Trends suggest that the latter four taxa in particular, in which individuals generally have a small body size, still have many species remaining to be described. More conspicuous taxa are better known, but new species continue to be described. Whilst the World Wars and advent of new scientific techniques do not appear to have had significant impacts on the general trends in discovery of new species, individual scientists have made major contributions.


Author(s):  
Daoyuan Yu ◽  
Le Cong Man ◽  
Louis Deharveng

Two species of Tomoceridae were found near Dalat, southern Vietnam. Tomocerus ocreatus Denis, 1948 is redescribed based on a neotype specimen. Previous records of Tomocerus ocreatus in non-type localities are reevaluated. A new species Tomocerina annamitica sp. nov. is described. The new species is mainly characterized by its small body size, pointed tenent hair, compound dental spines and the absence of intermediate teeth on mucro.


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