Pristina trifida sp. nov., a new soil-dwelling microannelid (Oligochaeta: Naididae) from Amazonian forest soils, with comments on species recognition in the genus

Zootaxa ◽  
2002 ◽  
Vol 118 (1) ◽  
pp. 1 ◽  
Author(s):  
RUT COLLADO ◽  
RÜDIGER M. SCHMELZ
Keyword(s):  
New Species ◽  
Forest Soils ◽  
Reproductive System ◽  
Distal Part ◽  
Vas Deferens ◽  
Species Recognition ◽  
Prostate Gland ◽  
High Similarity ◽  
Large Prostate ◽  
A New Species

A new species of the oligochaete genus Pristina (Naididae) is described from Central Amazonian soil and litter samples. Investigations were carried out on living and preserved material, with emphasis on characters of the soft-bodied anatomy as seen in living specimens, including the sexual organs. Regarding the chaetal pattern, Pristina trifida is almost indistinguishable from the syntopic P. silvicola Collado & Schmelz, 2000. Conspicuous differences exist, however, in the presence of a stomach with intracellular canals, in the location of the first nephridium in segment IX, and in details of the male reproductive system such as a large prostate gland and a widening of the distal part of the vas deferens. The new species resembles also a group of taxonomically problematic species, P. sima, P. minuta, and P. osborni, whose synonymy has been assumed by several authors. Pristina trifida differs from this group mainly by smaller needle and ventral chaetae and by equally long teeth in the anterior ventral chaetae. The high similarity in the chaetal pattern between P. trifida and P. silvicola implies that there are more species in Pristina than the chaetae might suggest. It further questions the accuracy of chaetae-based species identifications and synonymizations in the group of P. osborni, P. minuta, and P. sima, and possibly the genus in general.

Achaeta becki sp. nov. (Oligochaeta: Enchytraeidae) from Amazonian forest soils

Zootaxa ◽  
2005 ◽  
Vol 1084 (1) ◽  
pp. 49 ◽  
Author(s):  
RÜDIGER M. SCHMELZ ◽  
RUT COLLADO
Keyword(s):  
New Species ◽  
Blood Vessel ◽  
Forest Soils ◽  
Rain Forest ◽  
Vas Deferens ◽  
Terra Firme ◽  
Pharyngeal Gland ◽  
Similarities And Differences ◽  
Almost All ◽  
A New Species

A new species of the mainly terrestrial enchytraeid oligochaete genus Achaeta is described from 'terra firme' soils of the Amazonian primary rain forest near Manaus, Brazil. Achaeta becki sp. nov. is about 6 mm long; its main distinguishing characters are a very short vas deferens, thickened septa in almost all segments, and a dorsal blood vessel origin in the clitellar region. Oesophageal appendages, pyriform glands (=setal follicles), and secondary pharyngeal gland lobes are absent. Further distinguishing characters are: pharyngeal glands separate in VI, extending into VII, preclitellar nephridia at 6/7 and 8/9, spermathecal ectal pores lateral. The new species is most similar to A. maorica Benham, 1903, A. neotropica Ñernosvitov, 1937, and A. iridescens Christoffersen, 1979, all from the southern hemisphere. Similarities and differences are discussed in detail.

A New Species of Rhacophorus Genus (Amphibia: Anura: Rhacophoridae: Rhacophorinae) from Van Ban District, Lao Cai Province, Northern Vietnam

2019 ◽  
Vol 26 (6) ◽  
pp. 325-334
Author(s):  
Ivan I. Kropachev ◽  
Nikolai L. Orlov ◽  
Hoa Thi Ninh ◽  
Tao Thien Nguyen
Keyword(s):  
New Species ◽  
Distal Part ◽  
Slender Body ◽  
Northern Vietnam ◽  
Lao Cai ◽  
Lower Ratio ◽  
A New Species ◽  
Green Triangle ◽  
Brown Color

We describe a new species of the Rhacophorus genus, which differs from all species known in Asia by the combination of characters. It strongly differs also from small and middle-sized species of Rhacophorus sensu lato: Rhacophorus calcaneus Smith, 1924, Leptomantis cyanopunctatus (Manthey et Steiof, 1998), Rhacophorus hoabinhensis Nguyen, Pham, Nguyen, Ninh et Ziegler, 2017, Rhacophorus hoanglienensis Orlov, Lathrop, Murphy et Ho, 2001, Zhangixalus jarujini (Matsui et Panha, 2006), Rhacophorus laoshan Mo, Jiang, Xie et Ohler, 2008, Rhacophorus pardalis Günther, 1858, Rhacophorus rhodopus Liu et Hu, 1960, Rhacophorus robertingeri Orlov, Poyarkov, Vassilieva, Ananjeva, Nguyen, Sang, and Geissler, 2012, Leptomantis robinsonii (Boulenger, 1903), Rhacophorus spelaeus Orlov, Gnophanxay, Phimminith, and Phomphoumy, 2010, Rhacophorus translineatus Wu, 1977, Rhacophorus turpes Smith, 1940, Rhacophorus vampyrus Rowley, Le, Thi, Stuart et Hoang, 2010, Rhacophorus viridimaculatus Ostroshabov, Orlov et Nguyen, 2013 by having brown color with two green dorsolateral stripes starting at the groin level and connecting through the distal part of eyelid with green triangle on the head, slender body and head, lower ratio HW/HL 0.86, lower HW/SVL 0.28 and lower ratio HL/SVL 0.32.

A new species of soil predatory flagellate, Colponema edaphicum sp. n., from Vorontsovskaya Cave, North Caucasus (Protista, Alveolata: Colponemidae)

2007 ◽  
Vol 16 (1) ◽  
pp. 1-4
Author(s):  
A.P. Mylnikov ◽  
D.V. Tikhonenkov
Keyword(s):  
New Species ◽  
Distal Part ◽  
Oval Cell ◽  
North Caucasus ◽  
A New Species

A new species of soil predatory flagellate, Colponema edaphicum sp. n., is described from Vorontsovskaya Cave (Krasnodar Terr.). This species is characterized by the smallsized flattened oval cell with small rostrum and pointed distal part as well as by amphorashaped toxicysts. Morphological diagnoses of other known Colponema species are given. Intrageneric distinctions are discussed.

On the Anatomy and Histology of Phreoryctes

1890 ◽  
Vol 16 ◽  
pp. 117-119
Author(s):  
Frank E. Beddard
Keyword(s):  
New Species ◽  
New Zealand ◽  
Natural History ◽  
Reproductive System ◽  
Single Specimen ◽  
Published Account ◽  
A New Species

(Abstract.)The genus Phreoryctes has been known to zoologists since the year 1843, but there is no published account of the reproductive system sufficiently detailed to permit of comparison with other Oligochæta. The gonads (testes and ovaries) and spermathecœ were discovered by Leydig, who did not distinguish between ovaries and testes, owing to the immature condition of the specimens studied. This writer considered that the genital products were evacuated through the nephridia of their segment. The supposition is, however, incorrect, as genital ducts exist. Mr W. W. Smith of Ashburton, New Zealand, forwarded to the author in the spring of 1888 a single specimen of a new species of Phreoryctes, which was described in the Annals and Magazine of Natural History for June 1888 as Phreoryctes Smithii. In that paper the gonads and their ducts were briefly described and figured.

scholarly journals A NEW SPECIES OF MALDIVEA GERLACH, 1962 (NEMATODA, OXYSTOMINIDAE) FROM FELIDHOO ATOLL (MALDIVES, INDIAN OCEAN) AND AN EMENDED DIAGNOSIS OF THE SUB-FAMILY AND GENUS

2019 ◽  
Vol 20 ◽  
pp. 1-9
Author(s):  
Federica Semprucci ◽  
Maria Balsamo
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Type Species ◽  
Distal Part ◽  
Complex Structure ◽  
Dorsal Side ◽  
The Other ◽  
Ventral Part ◽  
Endemic Genus ◽  
A New Species

Maldivea Gerlach, 1962 is a possible endemic genus of the Maldivian archipelago for which only M. xarifae Gerlach, 1962 has been described so far. A new species of this genus, M. complexa n.sp., was recently found in Felidhoo atoll. It reveals a more complex structure of gubernaculum than in type species which appears to be divided into two pieces: one is a sort of long wing in the ventral part of the spicule and the other one, more complex, is characterized by several curved stripes which envelop the dorsal side of the spicule distal part. According to the present considerations, diagnoses of Paroxystomininae and Maldivea are emended.

scholarly journals New species of Temnocephala (Platyhelminthes, Temnocephalida) ectosymbiont on vulnerable species of aeglids (Crustacea, Anomura) from the Neotropical Region

2018 ◽  
Vol 18 (4) ◽  
Author(s):  
Samantha Alves Seixas ◽  
Norton Dametto ◽  
Eduardo Périco
Keyword(s):  
New Species ◽  
Reproductive System ◽  
Rio Grande ◽  
First Record ◽  
Neotropical Region ◽  
Vulnerable Species ◽  
Rio Grande Do Sul ◽  
Anterior Portion ◽  
Vaginal Sphincter ◽  
A New Species

Abstract: A new species of the genus Temnocephala Blanchard, 1849 from southern Brazil was found on two species of anomuran crustaceans, Aegla spinipalma Bond-Buckup & Buckup, 1994 and Aegla grisella Bond-Buckup & Buckup, 1994, the latter classified as a vulnerable species by the "Lista de Referência da Fauna Ameaçada de Extinção no Rio Grande do Sul. Decreto no 41.672, de 11 junho de 2002". The crustaceans were collected from a tributary creek of the Forqueta river, Perau de Janeiro, Arvorezinha and a tributary creek of the Fão river, Pouso Novo, Rio Grande do Sul, Brazil; both localities belong to the Sub-Basin of Forqueta River. The new species differs from seven other temnocephalans epibionts on Aegla Leach, 1820, by having the following characters: 1. a long and slightly curved cirrus, 2. two vaginal sphincters, one proximal, big and asymmetric, and one distal, smaller and symmetric, and; 3. longer than wide, elongated epidermal 'excretory' syncytial plates (EPs), with a almost horizontally central excretory pore, displaced to the anterior portion of the plate. The new species' EP is the largest in total length among epibionts temnocephalans in crustaceans already registered. Regarding the similarities with the male reproductive system of Temnocephala axenosMonticelli, 1898, the new species has important differences in the female reproductive system. It has a larger proximal vaginal sphincter, located in the middle of the vagina, while the smaller distal one is at the extreme end of the organ. Besides that, the vaginal portion between the proximal and distal sphincters is conspicuous, with a strong muscular wall. This is the first record of a species of Temnocephala in the Taquari Valley, as well in the 'Perau de Janeiro', which is an area with a rich endemic fauna.

A new species of the genus Mallomonas (Synurales, Chrysophyceae), Mallomonas fimbriata, sp. nov.

Phytotaxa ◽  
2015 ◽  
Vol 195 (4) ◽  
pp. 291 ◽  
Author(s):  
Evgeniy Sergeevich Gusev
Keyword(s):  
New Species ◽  
Distal Part ◽  
Scale Morphology ◽  
Special Group ◽  
Silica Scale ◽  
Central Vietnam ◽  
Means Of Transmission ◽  
A New Species ◽  
Oval Body ◽  
Scanning Electron

Mallomonas fimbriata, sp. nov. is described from bog pool, located in Cam Ranh Peninsula, Khanh Hoa Province, Central Vietnam. The description is based on silica-scale morphology studied by means of transmission and scanning electron microscopy. New species has 3 types of scales: oval body scales, caudal ones with robust, long, forward pointing spines and elongated, widened to distal part apical scales. Scales are thick, 3-layered, with inner reticulation. Mallomonas fimbriata and the similar M. fenestrata form a special group with unique features of scales structure close to the sections Retrorsae and Quadratae.

A new species of the genus Neoverruca (Cirripedia, Thoracica, Verrucidea, Neoverrucidae) from a hydrothermal vent area in the Okinawa Trough

Crustaceana ◽  
2015 ◽  
Vol 88 (9) ◽  
pp. 991-1001 ◽  
Author(s):  
Zhong-Li Sha ◽  
Xian-Qiu Ren
Keyword(s):  
New Species ◽  
Hydrothermal Vent ◽  
Distal Part ◽  
Okinawa Trough ◽  
Longitudinal Ridge ◽  
Longitudinal Groove ◽  
The Okinawa Trough ◽  
Inner Surface ◽  
A New Species

A new species of the neoverrucid barnacle genusNeoverrucaNewman, 1989,N. intermediasp. nov., collected from a hydrothermal vent area in the Okinawa Trough, is described and illustrated. It differs fromN. brachylepadoformisNewman, 1989 by the apical end of the inner surface of the movable scutum being in a pocket-form, with a longitudinal groove upwards, and without median ridges; the adductor ridge (or myophore) of the fixed scutum stout and the inner distal part of the scutum without longitudinal ridge.

Cruznema brevicaudatum n. sp. (Nematoda: Rhabditidae) and Indiana coimbatoriensis n. sp. (Nematoda: Pulchrocephalidae) from the mole-cricket, Gryllotalpa africana Beauvois, from India

1972 ◽  
Vol 50 (11) ◽  
pp. 1457-1462 ◽  
Author(s):  
M. A. Latheef ◽  
A. R. Seshadri
Keyword(s):  
New Species ◽  
Seminal Vesicle ◽  
Unknown Function ◽  
Vas Deferens ◽  
First Record ◽  
The Body ◽  
Lateral Field ◽  
Mole Cricket ◽  
A New Species

Cruznema brevicaudatum is described as a new species because its lips are not distinctly set off, and it has nine pairs of tubular and one pair of pyriform bursal ribs. Two diverticula of unknown function occur at the junction of the vas deferens and seminal vesicle. This is the first record of a Cruznema as an insect associate. Indiana coimbatoriensis is recognized as a new species on the basis of size and arrangement of spines on the body and lateral field. Only females were found.

New mouthless nematode of the genus Parastomonema Kito, 1989 (Nematoda: Siphonolaimidae) from a mangrove forest on the coast of Thailand, and erection of the new subfamily Astomonematinae within the Siphonolaimidae

Zootaxa ◽  
2006 ◽  
Vol 1177 (1) ◽  
pp. 39 ◽  
Author(s):  
KENJI KITO ◽  
CHITTIMA ARYUTHAKA
Keyword(s):  
New Species ◽  
Reproductive System ◽  
Mangrove Forest ◽  
Type Species ◽  
Alimentary Canal ◽  
Diagnostic Feature ◽  
Female Reproductive System ◽  
Muddy Sediments ◽  
Short Body ◽  
A New Species

A new species of mouthless nematode Parastomonema papillosum sp. nov. was described based on specimens collected in muddy sediments of a mangrove forest in Samut Songkhram, Thailand. Parastomonema papillosum sp. nov. is the second species of the genus and differs from the type species P. fijiense Kito, 1989 in having short body length (1.5–3.0 mm), short cephalic setae (1.5–2.6 µm), and a weakly cuticularized gubernacular apophysis in the male. Astomonematinae subfam. nov. was erected for the two mouthless genera Astomonema and Parastomonema in the Siphonolaimidae based on the diagnostic feature of a degenerate alimentary canal and female reproductive system with paired ovaries.

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