Description of Crassolabium costaricense sp. n. (Nematoda: Dorylaimida: Dorylaimidae) from Costa Rica

Nematology ◽  
2018 ◽  
Vol 20 (10) ◽  
pp. 1007-1014 ◽  
Author(s):  
Ingrid Varela-Benavides ◽  
Reyes Peña-Santiago
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Body Length ◽  
Evolutionary Relationship ◽  
Neck Length ◽  
Natural Habitats ◽  
Nearly Continuous ◽  
A New Species

Summary A new species of Crassolabium, C. costaricense sp. n., collected from natural habitats in Costa Rica, is described and illustrated. The new species is characterised by its body length of 1.26 (1.22-1.30) mm in the female and 1.28 (1.16-1.37) mm in the male, lip region nearly continuous and 13.5 (12.5-14.5) μm broad in the female and 13.1 (12.5-14.0) μm broad in the male, odontostyle 17.3 (15.5-19.0) μm long in the female and 18.1 (17.0-19.0) μm long in the male with the aperture occupying 33-42% its length, neck 302-334 μm long, pharyngeal expansion 120-142 μm long or occupying 40-45% of total neck length, uterus tripartite and 163 (134-176) μm long or 2.6-3.1 times the corresponding body diam., pars refringens vaginae well developed, vulva transverse (V = 57.1 (56.0-58.0)), tail short and rounded in female (17.9 (17.0-19.0 μm) long; c = 70.3 (67.0-72.0); c′ = 0.56 (0.50-0.60)) and more conoid in males (21.6 (17.0-23.0) μm long; c = 60.4 (56.0-77.0); c′ = 0.65 (0.50-0.70)), spicules 47 (44-49) μm long, and presence of 8-10 closely spaced ventromedian supplements with an hiatus. Its molecular (LSU D2-D3) characterisation supports an evolutionary relationship with members of the Dorylaimidae.

A new species of the genus Aporcelinus Andrássy, 2009 (Nematoda, Dorylaimida, Aporcelaimidae) from Costa Rica

Zootaxa ◽  
2018 ◽  
Vol 4450 (4) ◽  
pp. 489 ◽  
Author(s):  
INGRID VARELA-BENAVIDES ◽  
REYES PEÑA-SANTIAGO
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Neck Length ◽  
Natural Habitats ◽  
Body Diameter ◽  
A New Species

A new species of the genus Aporcelinus, A. elongicaudatus sp. n., collected from natural habitats of Costa Rica, is described and illustrated. The new species is characterized by its 0.92–1.05 mm long body, lip region offset by weak constriction and 15 µm broad, odontostyle 15–18 µm or 1.0–1.2 times the lip region diameter, neck 270–300 µm long, pharyngeal expansion 130–150 µm long or 45–55% of total neck length, uterus 33–41 µm long or 0.70–0.85 times the corresponding body diameter (but certainly longer), vulva transverse (V = 49–51), and tail conical elongated (45–71 µm, c = 14–22, c’ = 2.0–3.2) and dorsad bent. 

Eudorylaimus kahaqensis sp. n. (Nematoda: Dorylaimida: Qudsianematidae), an interesting new species from Iran

Zootaxa ◽  
2018 ◽  
Vol 4369 (1) ◽  
pp. 128
Author(s):  
E. KAZEMI ◽  
G. NIKNAM ◽  
H. JABBARI ◽  
R. PEÑA-SANTIAGO
Keyword(s):  
New Species ◽  
Short Distance ◽  
Cell Mass ◽  
Nerve Ring ◽  
Neck Length ◽  
Caudal Region ◽  
Nearly Continuous ◽  
A New Species

A new species of the genus Eudorylaimus is described from Kahaq region, Maragheh, East Azarbaijan province in Iran. Eudorylaimus kahaqensis sp. n. is characterized by its 1.40–1.75 mm long body, lip region nearly continuous and 17–21 µm wide and bearing a weakly sclerotized but distinct cephalic framework, cheilostom broad and with convex walls, odontostyle 21–23 µm long with aperture occupying 33–44% of its length, presence of a dorsal coelomocyte a short distance behind the nerve ring, neck 347–397 µm long, DN rather posterior (66–70%), pharyngeal expansion 162–205 µm or occupying 45–53% of total neck length, presence a dorsal cell mass at level of pharyngo-intestinal junction, V = 48–52, caudal region conical elongate (50–73 µm, c = 24–30, c’ = 1.9–2.6 in females; 45–68 µm, c = 22–32, c’ = 1.7–2.3 in males) and regularly curved ventrad with large hyaline portion, spicules 48–55 µm long and 7–9 irregularly spaced ventromedian supplements lacking hiatus. 

scholarly journals Two atypical new species of the genus Sectonema Thorne, 1930 (Nematoda, Dorylaimida, Aporcelaimidae) from Vietnam

2016 ◽  
Author(s):  
Thi Anh Duong Nguyen ◽  
Joaquín Abolafia ◽  
Michael Bonkowski ◽  
Reyes Peña-Santiago ◽  
Sergio Álvarez-Ortega
Keyword(s):  
New Species ◽  
Ventral Side ◽  
The Body ◽  
Neck Length ◽  
Natural Habitats ◽  
Body Diameter ◽  
Two New Species ◽  
Atypical Feature ◽  
Nearly Continuous ◽  
Scanning Electron

Two new species of the genus Sectonema from natural habitats of northern Vietnam are studied. This paper includes their descriptions, measurements, line illustrations, and light microscope (LM) and scanning electron microscope (SEM) pictures. Sectonema tropicum sp. nov. is characterized by a 2.56–3.24 mm long body, 19–21 μm broad lip region, odontostyle 20–21 μm long at its ventral side, 730–834 μm long neck, pharyngeal expansion occupying 52–59% of total neck length, uterus a simple tube-like structure 150–242 μm long or 1.2–2.5 times the body diameter, pars refringens vaginae present, V = 48–52, short (31–40 μm, c = 70–91, c’ = 0.5–0.6) and rounded tail, 91–97 μm long spicules, and only one weakly developed ventromedian supplement. Sectonema vietnamense sp. nov. is characterized by its slender (a = 33–49) and 2.71–4.25 mm long body, 14–16 μm broad lip region, odontostyle 8–9 μm long at its ventral side, 716–918 μm long neck, pharyngeal expansion occupying 63–67% of total neck length, uterus simple and 209–242 μm long or 2.5–2.9 times the corresponding body diameter, pars refringens vaginae absent, V = 54, short (34–39 μm, c = 70–115, c’ = 0.6–0.8) and rounded tail, 59–75 μm long spicules, and three or four irregularly spaced ventromedian supplements bearing hiatus. Both species are also characterized by their nearly continuous lip region, an atypical feature in this genus. Molecular analysis of S. tropicum sp. nov. confirms that Sectonema is a natural (monophyletic) taxon, very close to Metaporcelaimus.

Three new species of Sectonema Thorne, 1930 (Dorylaimida: Aporcelaimidae) from Vietnam

Nematology ◽  
2016 ◽  
Vol 18 (5) ◽  
pp. 517-536 ◽  
Author(s):  
Sergio Álvarez-Ortega ◽  
Thi Anh Duong Nguyen ◽  
Joaquín Abolafia ◽  
Thi Thanh Tam Vu ◽  
Michael Bonkowski ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Relationship ◽  
Ventral Side ◽  
Molecular Data ◽  
Evolutionary Tree ◽  
Neck Length ◽  
Natural Habitats ◽  
Line Drawings ◽  
Close Phylogenetic Relationship ◽  
Three New Species

Three new species of the genus Sectonema collected from natural habitats in Vietnam are studied, described and illustrated, including line drawings, LM and/or SEM pictures. Sectonema birrucephalum sp. n. is characterised by its 2.73-4.35 mm long body, lip region 18-20 μm broad and offset by deep constriction, odontostyle 10.0-11.5 μm long on its ventral side, 659-989 μm long neck, pharyngeal expansion occupying 63-68% of total neck length, uterus a simple tube, 221-277 μm long, pars refringens vaginae present, V = 54-56, tail short (31-43 μm, c = 85-111, c′ = 0.6-0.8) and rounded, spicules 72-75 μm long, and four or five irregularly spaced ventromedian supplements beyond the range of the spicules. Sectonema buccociliatum sp. n. is distinguished by its 2.00-2.46 mm long body, lip region offset by constriction, 19-20 μm broad and bearing perioral cilia-like structures, odontostyle 13-14 μm long at its ventral side, 530-625 μm long neck, pharyngeal expansion occupying 62-69% of total neck length, uterus a simple tube, 116-152 μm long, pars refringens vaginae present, V = 56-62, tail short (23-31 μm, c = 72-104, c′ = 0.6-0.8) and rounded, spicules 56-68 μm long, and 3-5 spaced and weakly developed ventromedian supplements beyond the range of the spicules. Sectonema ciliatum sp. n. is characterised by its 2.79-3.13 mm long body, lip region offset by constriction, 21-22 μm broad and bearing perioral cilia-like structures, odontostyle 14-15 μm long at its ventral side, 699-722 μm long neck, pharyngeal expansion occupying 60% of total neck length, uterus a simple tube, 201-244 μm long, pars refringens vaginae present, V = 52-53, tail short (33-35 μm, c = 82-92, c′ = 0.6-0.7) and rounded, spicules 70-72 μm long, and three or four spaced and weakly developed ventromedian supplements beyond the range of the spicules. Molecular data obtained for S. ciliatum sp. n. and the derived evolutionary tree show a close phylogenetic relationship with other species of the genus.

A new species of the genus Eudorylaimus Andrássy, 1959 (Nematoda: (Dorylaimida: Qudsianematidae) associated with Picea crassifolia in China

Zootaxa ◽  
2018 ◽  
Vol 4526 (4) ◽  
pp. 576
Author(s):  
WEN-JIA WU ◽  
CHUN-LING XU ◽  
DONG-WEI WANG ◽  
HUI XIE
Keyword(s):  
New Species ◽  
Rhizosphere Soil ◽  
Phylogenetic Analyses ◽  
Small Subunit ◽  
Neck Length ◽  
Picea Crassifolia ◽  
Body Diameter ◽  
Small Subunit Rdna ◽  
C Value ◽  
A New Species

A new species, Eudorylaimus piceae n. sp., extracted from rhizosphere soil of Picea crassifolia from Inner Mongolia, China was identified. The new species is characterized by these combined characters: body length of 1.03–1.27 mm; lip region distinctly offset; odontostyle 20–22 μm and 1.1–1.4 times the lip region diameter in length; odontophore 1.1–1.2 times the odontostyle length; basal expansion of pharynx occupying 42%–50.5% of the total neck length; genital system didelphic-amphidelphic; vulva transverse; vagina extending inwards 32%–43%; V value averaging more than 60; pars refringens vaginae with two trapezoidal sclerotizations and pars distalis vaginae weakly sclerotized; prerectum 72–107 μm long, 2.3–3.3 times the anal body diameter, and rectum 1–1.6 times the anal body diameter in length; tail conoid and bent ventrally, c’ value 1.5–1.8 and males unknown. Phylogenetic analyses based on sequences of 18S small subunit rDNA and the D2-D3 expansion region of 28S rDNA are presented. 

scholarly journals A New Species of Galipea (Rutaceae-Cuspariinae) from Costa Rica and Nicaragua

1994 ◽  
Vol 4 (4) ◽  
pp. 347
Author(s):  
Jorge Gómez-Laurito ◽  
Quírico Jiménez Madrigal ◽  
Jorge Gomez-Laurito ◽  
Quirico Jimenez Madrigal
Keyword(s):  
New Species ◽  
Costa Rica ◽  
A New Species

Redescription of the Central American genus Moribaetis Waltz & McCafferty 1985 (Ephemeroptera, Baetidae)

Zootaxa ◽  
2018 ◽  
Vol 4521 (2) ◽  
pp. 231
Author(s):  
NIKITA J. KLUGE ◽  
JUAN A. BERNAL VEGA
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Type Species ◽  
Central American ◽  
Type Locality ◽  
New Combination ◽  
Single Male ◽  
Male And Female ◽  
A New Species

A new definition for the genus Moribaetis Waltz & McCafferty 1985 is given. Its type species, Moribaetis maculipennis (Flowers 1979) is redescribed based on male and female imagoes reared from larvae near the type locality in Panama. Larvae, formerly wrongly attributed to Moribaetis salvini (Eaton 1885), and a male imago, formerly wrongly attributed to Moribaetis macaferti Waltz 1985, belong to a new species Moribaetis latipennis sp. n., which is described here based on a male imago reared from larva in Panama. Both species, M. maculipennis and M. latipennis sp. n., are distinct from M. salvini, which is known as a single male imago (lectotype) from Costa Rica. All other species, formerly attributed to Moribaetis, are excluded from this genus; a new combination Caribaetis macaferti comb. n. is proposed for the species originally described as Moribaetis macaferti Waltz (in Waltz & McCafferty) 1985, and a new combination Baetis (Rhodobaetis) mimbresaurus comb. n. is proposed for the species originally described as Moribaetis mimbresaurus McCafferty 2007. 

scholarly journals Pleodendron costaricense (Canellaceae), a new species for Costa Rica

Lankesteriana ◽  
2015 ◽  
Vol 5 (3) ◽  
Author(s):  
Barry Hammel ◽  
Nelson Zamora
Keyword(s):  
Puerto Rico ◽  
New Species ◽  
Costa Rica ◽  
A New Species

Se describe e ilustra Pleodendron costaricense, una especie de árboles muy rara en el bosque lluvioso de bajura del Pacífico Sur de Costa Rica. La única otra especie congenérica, P. macranthum, se encuentra ca. 2000 km al nordeste, en Puerto Rico. Hasta ahora, la única especie de Canellaceae conocida en Centroamérica era Canella winterana, principalmente de las Antillas, que llega a la Península de Yucatán en México. 

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