Two new species of the genus Notacanthurus from China (Ephemeroptera: Heptageniidae, Ecdyonurinae)

Zootaxa ◽  
2020 ◽  
Vol 4802 (2) ◽  
pp. 335-348
Author(s):  
WEI ZHANG ◽  
MIN ZHANG ◽  
NA HAN ◽  
CHANG-FA ZHOU
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Anterior Margin ◽  
Two New Species

Previously, only three of seven species in the Asian genus Notacanthurus were reported both nymphs and imagoes, and no Chinese species was found. Here two new species collected from China, which are named as Notacanthurus maculatus sp. n. and N. lamellosus sp. n. respectively, are described and pictured in detail. The nymph of N. maculatus sp. n. has following combined characters: posterior margin of sternum IX straight, claws with two subapical denticles, and gills V–VI with arrow-like accessory lobes. The male imago has unspecialized anterior margin of head and Electrogena-like penis lobes. The second species N. lamellosus sp. n. is more distinguishable. Its nymph has pale dots on head, median dorsal ridges on abdominal terga I–IX, claws with five subapical denticles, and dorsal lamellae of gills II–IV divided into two portions. Anterior margin of male imago is not protruding either, forewings have less pigmented crossveins between Sc and R1, and penis lobes have apical and ventral sclerites. A key to all known nymphs of the genus is provided. 

TWO NEW SPECIES OF CIXIUS (HOMOPTERA, FULGORIDAE)

1932 ◽  
Vol 64 (1) ◽  
pp. 21-22
Author(s):  
G. Stuart Walley
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Anterior Margin ◽  
Median Length ◽  
Lower Margin ◽  
Median Carina ◽  
Two New Species

Length, apex of head to tips of wings 5.75 mm.; width of wing at apex of clavus 1.75 mm.Vertex broad, transverse, resembling pini, median length distinctly less than half as great as width at middle of posterior margin; anterior margin very broadly arcuate, posterior margin scarcely less so. Frons almost twice as long at middle as is clypeus, slightly transversely elevated just before lower margin; greatest width equal to median length. Pronotum with posterior margin slightly obtusely angulate at middle. Mesonotum tricarinate, median carina well defined anteriorly but obsolescent at apex, lateral carinae entire, distinctly divergent posteriorly.

Two new species of Cossura (Cossuridae, Annelida) from the terminal lobes of the Congo River deep-sea fan

2017 ◽  
Vol 97 (5) ◽  
pp. 881-888
Author(s):  
Anna Zhadan
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Anterior Margin ◽  
Posterior Part ◽  
Entire Body ◽  
Congo River ◽  
Two New Species ◽  
Dark Pigmentation ◽  
Sea Fan ◽  
Scanning Electron

Two new species of Cossura Webster & Benedict, 1887 were found in material collected during sampling from the terminal lobes of the Congo deep-sea fan. They were described using light and scanning electron microscopy. Cossura platypus sp. nov. has 15–17 thoracic chaetigers, a prostomium longer than it is wide, with a widely rounded anterior margin, an abruptly expanded posterior prostomial ring the same length as the peristomium, without a mid-ventral notch, a branchial filament attached to the midlength of chaetiger 3, and a pygidium with three anal cirri. Cossura platypus sp. nov. is similar to C. brunnea Fauchald, 1972 but differs in the shape of the prostomium, which is widely rounded anteriorly in C. platypus sp. nov. and is broadly triangular in C. brunnea; furthermore, C. platypus sp. nov.is uniformly pale, whereas C. brunnea has dark pigmentation. Cossura candida Hartman, 1955 differs from C. platypus sp. nov. in the conical shape of the prostomium and 24–35 thoracic chaetigers. Cossura flabelligera sp. nov. has 16–19 thoracic chaetigers, a conical prostomium, and a branchial filament arising from the posterior part of chaetiger 2; the entire body, including the chaetae, is covered by a thick mucous sheath similar to the tunic of flabelligerids. Cossura flabelligera sp. nov. resembles C. longocirrata Webster & Benedict, 1887 in the position of the branchial filament, the shape of the prostomium, and the number of thoracic chaetigers; it differs in having a thick mucous sheath. This character seems to be unique for the Cossuridae.

scholarly journals Two new species of Hyphessobrycon (Teleostei: Characidae) from upper rio Tapajós basin on Chapada dos Parecis, central Brazil

2006 ◽  
Vol 4 (3) ◽  
pp. 301-308 ◽  
Author(s):  
Tiago Pinto Carvalho ◽  
Vinicius Araújo Bertaco
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Caudal Fin ◽  
Mato Grosso ◽  
Central Brazil ◽  
Dorsal Fin ◽  
Two New Species ◽  
Fin Rays ◽  
Black Band

Two new species of Hyphessobrycon are described from the upper rio Tapajós basin, Mato Grosso, Brazil. Hyphessobrycon melanostichos is distinguished from its congeners by the combination of a conspicuous longitudinal broad black band beginning on the posterior margin of orbit and reaching the tip of middle caudal fin rays, a distinct vertically elongate humeral spot, and 16 to 18 branched anal-fin rays. Hyphessobrycon notidanos is distinguished from its congeners by the combination of an elongate dorsal fin in mature males, a vertically elongate humeral spot, 2-4 maxillary teeth, iii,8 dorsal-fin rays, and 16 to 21 branched anal-fin rays.

Two new species of Hoplomegistidae (Acari: Mesostigmata) associated with passalid Beetles from China

2017 ◽  
Vol 22 (6) ◽  
pp. 797
Author(s):  
Xin-Feng Zhang ◽  
Tian-Ci Yi ◽  
Jian-Jun Guo ◽  
Dao-Chao Jin
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
First Record ◽  
Lateral Margin ◽  
Adult Females ◽  
The Family ◽  
Two New Species

Stenosternum cordata sp. nov. and Stenosternum bifurcata sp. nov., new to science, are described, which is the first record of Hoplomegistidae from Asia. Stenosternum cordata sp. nov. is distinguished by its heart-shaped latigynal shield with two pairs of setae along the lateral margin, and two pairs of setae along the posterior margin of the sternal shield. Stenosternum bifurcata sp. nov. is distinguished by having remarkable bifurcate corniculus, six pairs of setae on the sternal shield and three pairs setae on the latigynal shield. The family Hoplomegistidae Camin & Gorirossi, 1955 is redefined and a key to adult females of species is provided. 

Okubasca Dworakowska (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini) elevated to separate genus status with description of two new species from China

Zootaxa ◽  
2019 ◽  
Vol 4609 (2) ◽  
pp. 395
Author(s):  
XIAOFEI YU ◽  
MAOFA YANG
Keyword(s):  
New Species ◽  
Anterior Margin ◽  
Dorsal Side ◽  
Lateral View ◽  
Uniform Thickness ◽  
Separate Genus ◽  
Small Tooth ◽  
Two New Species ◽  
The Face ◽  
Genus Two

Okubasca Dworakowska, 1982, formerly treated as a subgenus of Empoasca Walsh, 1862, is elevated to status as a separate genus. Two new species of Okubasca from China are described and illustrated: Okubasca convoluta Yu & Yang sp. nov.; Okubasca paracalvata Yu & Yang sp. nov. Okubasca convoluta is similar to O. okubella in having the aedeagal shaft about as long as the preatrium but differs in having the aedeagus of uniform thickness in lateral view, the anal tube process straight and the face mostly black. Okubasca paracalvata resembles Okubasca calvata in aedeagal shape, but differs in having a lamellar swelling and a small tooth on the dorsal side of the aedeagus, and the vertex anterior margin rounded. 

Two new species of Sphaeromopsis (Crustacea: Isopoda: Sphaeromatidae) from the Persian Gulf

Zootaxa ◽  
2009 ◽  
Vol 2305 (1) ◽  
pp. 33-50 ◽  
Author(s):  
VALIALLAH KHALAJI-PIRBALOUTY ◽  
JOHANN-WOLFGANG WÄGELE
Keyword(s):  
New Species ◽  
Persian Gulf ◽  
Posterior Margin ◽  
Rounded Apex ◽  
Two New Species ◽  
The Persian Gulf ◽  
Single Suture ◽  
Electronmicroscope Study

Two new species of Sphaeromopsis (Sphaeromatidae: Isopoda) from Iran are described based on light and electronmicroscope study: Sphaeromopsis sarii sp. nov. from the coasts of Kish and Qeshm Islands, and S. persikolpos sp. nov. from Kish Island, Qeshm Islands and the southern coasts of Iran. The two species are sympatric in most areas. Sphaeromopsis sarii is distinct among other species in the genus for having a pleotelson with a faint dorsomedial furrow and a broadly rounded apex. Sphaeromopsis persikolpos sp. nov. is unique for the single suture at either side of the posterior margin of the pleon, a narrow pleotelsonic apex, and the uropodal exopod extensions that reach well beyond the pleotelsonic apex.

Two new Gammarus species (Crustacea: Amphipoda: Gammaridae) from Zagros Mountains, Iran

Zootaxa ◽  
2011 ◽  
Vol 2894 (1) ◽  
pp. 39 ◽  
Author(s):  
MARYAM HEKMATARA ◽  
ALIREZA SARI ◽  
MOHAMMAD-HADI HEIDARY BALADEHI
Keyword(s):  
New Species ◽  
Geographical Distribution ◽  
Anterior Margin ◽  
Gammarus Pulex ◽  
The Other ◽  
Zagros Mountains ◽  
Remarkable Feature ◽  
New Findings ◽  
Two New Species ◽  
Morphological Differences

The present study tries to focus on describing two new species belonging to genus Gammarus from western Iran along the Zagros Mountains range. The most remarkable feature of Gammarus hegmatanensis sp. n. is the shape of epimeral plate 3, which is sharply pointed posteriorly with a distinct lobate anterior margin. This species has some similarities with and differences from some other species of Gammarus pulex–group such as G. parthicus and G. syriacus. The other species, G. sirvannus sp. n. with elongated eyes is similar to G. duebeni, G. lobifer, G. balutchi and G. loeffleri, but it shows prominent morphological differences and a distinct geographical distribution from these species. These new findings shed more light on the information available on amphipod fauna of Iran.

A new genus and two new species of stoneflies (Plecoptera: Perlodidae) from Guizhou Province, China

Zootaxa ◽  
2020 ◽  
Vol 4718 (4) ◽  
pp. 470-480
Author(s):  
QING-BO HUO ◽  
YU-ZHOU DU
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
New Genus ◽  
Guizhou Province ◽  
Southwestern China ◽  
Two New Species

A new genus of family Perlodidae, Parisoperla Huo & Du, gen. nov. is described including two new species from Guizhou Province in southwestern China. Both sexes of the new genus are characterized by the posterior margin of tergum 10 with a sclerotized process. The male membranous aedeagus is covered ventrally by patches of fine spines. 

Acrochordonichthys gyrinus, a new species of akysid catfish (Teleostei: Siluriformes) from Thailand

Zootaxa ◽  
2003 ◽  
Vol 183 (1) ◽  
pp. 1 ◽  
Author(s):  
CHAVALIT VIDTHAYANON ◽  
HEOK HEE NG
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Anterior Margin ◽  
Species Group ◽  
Unique Combination ◽  
Maximum Width ◽  
Body Depth ◽  
Adipose Fin ◽  
Chao Phraya River ◽  
A New Species

Acrochordonichthys gyrinus, a new species of akysid catfish belonging to the A. ischnosoma species group, is described from the Chao Phraya River drainage in Thailand. It can be distinguished from congeners by a concave posterior margin of the pectoral fin and the unique combination of the following characteristics: head depth 9.8–11.4% SL; dorsal to adipose distance 7.4–8.6% SL; body depth at anus 8.3–10.5% SL; maximum width of humeral process 16.3% its length; and anterior margin of anal fin and posterior margin of adipose fin straight. This species represents the northernmost distribution of the genus.

Two new species of idoteid isopods (Crustacea, Isopoda, Idoteidae) from Korea

Zootaxa ◽  
2020 ◽  
Vol 4858 (2) ◽  
pp. 186-200
Author(s):  
SUNG HOON KIM ◽  
TAE WON JUNG ◽  
SEONG MYEONG YOON
Keyword(s):  
New Species ◽  
Anterior Margin ◽  
The Body ◽  
Lateral Margin ◽  
Korean Waters ◽  
Two New Species ◽  
Lateral Margins

Two new species, Cleantiella ampliscutula sp. nov. and Pentias pluriarticulatus sp. nov., are reported from Korean waters with keys to all known species of the genera Cleantiella and Pentias. Cleantiella ampliscutula sp. nov. can be distinguished from its congeners by the following characteristics: the body is relatively small; pereonite 1 is expanded anterolaterally; coxal plates 2–7 are triangular; the pleon has three partial sutures; the pleotelson is widening posteriorly on the lateral margin; the flagellum of the antenna is single-articled; and the maxillipedal palps are four-articled. Pentias pluriarticulatus sp. nov. can be distinguishable from its congeners by the following characteristics: the lateral margins of the body are parallel; the anterior margin of the cephalon is slightly concave and has a small median notch; the coxal plates are invisible dorsally on pereonites 2–4, but visible on pereonites 5–7; the pleon has three partial sutures; the flagellum of the antenna is composed of nine articles; and the distal ends of the uropodal endopods are sinuous. 

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