Nostolepis scale remains (stem Chondrichthyes) from the Lower Devonian of Qujing, Yunnan, China

Based initially on microfossils, Nostolepis is one of the first known ‘acanthodians’, which constitute a paraphyletic assemblage of plesiomorphic members of the total group Chondrichthyes. Its wide distribution has potential implications for stratigraphic comparisons worldwide. Six species of Nostolepis have been reported in China, including one species from the Xitun Formation (Lochkovian, Lower Devonian) of Qujing, eastern Yunnan. Acid preparation of rock samples from the Xitun Formation has yielded abundant acanthodian remains. Based on both morphological and histological examinations, here we identify five species of Nostolepis, including two new species. N. qujingensis sp. nov. is characterized by thin scales devoid of the neck anteriorly and the dentine tubules rarely present in the anterior part of the crown. N. digitus sp. nov. is characterized by parallel ridges on anterior and lateral margins of the crown, and the neck constricted and ornamented with pore openings. We extend the duration of N. striata in China from the Pridoli of Silurian (Yulungssu Formation) to the Lower Devonian in Qujing and report the first occurrences of N. amplifica and N. consueta in this region. This study increases the diversity of the Lower Devonian Xitun Fauna and provides a better understanding of the paleogeographic distribution of Nostolepis.

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Description of two new sympatric species of the genus Hisonotus Eigenmann and Eigenmann, 1889, from upper Rio Tapajós, Mato Grosso state, Brazil (Pisces: Ostariophysi: Loricariidae)

Brazilian Journal of Biology ◽

10.1590/s1519-69842007000300005 ◽

2007 ◽

Vol 67 (3) ◽

pp. 413-420 ◽

Cited By ~ 10

Author(s):

HA. Britski ◽

JC. Garavello

Keyword(s):

New Species ◽

Anterior Part ◽

Sympatric Species ◽

Growing Up ◽

Small Species ◽

Mato Grosso ◽

Moderate Number ◽

Two New Species ◽

Yellow Line

Two new species of the genus Hisonotus are described from the upper Rio Tapajós basin, Mato Grosso State, Brazil. They are small species, growing up to about 30.0 mm SL, having the scapular bridge wide and totally exposed or having a small median pair of arrector fossae, and the abdomen completely covered with large plates in adult specimens (about 23.0 mm SL). They are distinguished from their congeners by the following combination of characters: Hisonotus chromodontus has 20-40 reddish-brown tipped premaxillary teeth, and 15-38 on the dentary bones; 2324 plates on the longitudinal series; a prominent large dark brown lateral stripe extending from the tip of the snout to the caudal blotch; transversal dark brown bars very inconspicuous or absent. Hisonotus luteofrenatus has a moderate number (12-28) of hyaline or slightly yellow-tipped premaxillary teeth, and 9-26 on the dentary bones; 25-26 plates on the longitudinal series; a characteristic yellow line extending from the anterior part of each orbit, over the inferior nostril, both converging to the tip of the snout.

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An integrated approach to delimiting species borders in the genus Chrysotoxum Meigen, 1803 (Diptera: Syrphidae), with description of two new species

Contributions to Zoology ◽

10.1163/18759866-08404002 ◽

2015 ◽

Vol 84 (4) ◽

pp. 285-304 ◽

Cited By ~ 17

Author(s):

Zorica Nedeljković ◽

Jelena Ačanski ◽

Mihajla Đan ◽

Dragana Obreht-Vidaković ◽

Antonio Ricarte ◽

...

Keyword(s):

New Species ◽

Integrated Approach ◽

Integrative Taxonomy ◽

Species Boundaries ◽

Integrative Approach ◽

Taxonomic Study ◽

Additional Species ◽

Two New Species ◽

Lateral Margins ◽

A New Species

Integrative taxonomy tests the validity of taxa using methods additional to traditional morphology. The existence of two different morphotypes in specimens identified as Chrysotoxum vernale Loew (Diptera: Syrphidae) prompted their taxonomic study using an integrative approach that included morphology, wing and male-surstylus geometric morphometrics, genetic and ecological analyses. As a result, a new species is recognised, Chrysotoxum montanum Nedeljković & Vujić sp. nov., and C. vernale is re-defined. A lectotype and paralectotypes are designated for C. vernale to stabilize this concept. An additional species, Chrysotoxum orthostylum Vujić sp. nov., with distinctive male genitalia is also described. The three species share an antenna with the basoflagellomere shorter than the scape plus pedicel and terga with yellow fasciae not reaching the lateral margins. This study confirms the value of integrative approach for resolving species boundaries.

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Two new species of Tricorythodes Ulmer, 1920 (Insecta, Ephemeroptera) from Southeastern Brazil

Zootaxa ◽

10.11646/zootaxa.2721.1.7 ◽

2019 ◽

Vol 2721 (1) ◽

pp. 62 ◽

Cited By ~ 2

Author(s):

INÊS C. GONÇALVES ◽

ELIDIOMAR R. DA-SILVA ◽

JORGE L. NESSIMIAN

Keyword(s):

New Species ◽

Southeastern Brazil ◽

Two New Species ◽

Lateral Margins

Two news species of Tricorythodes are described from both, nymph and male imago: Tricorythodes chalaza sp. nov. and Tricorythodes diasae sp. nov. Imagoes of T. diasae sp. nov. can be characterized as follows: vein CuP of wings absent or incomplete; distal 3/4 of hind legs black; inner margins of styliger plate projected; penes rectangular with lateral margins sclerotized, forming two distal lobes inserted apico-dorsally with rounded margins whereas imagoes of T. chalaza sp. nov. present: vein CuP incomplete or absent; inner margins of styliger plate projected; basal swelling on segment II of forceps shaded with black; penes pyramidal with lateral margins sclerotized, divided apically.

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A revision of the Australian Tortricini, Schoeotenini, and Chlidanotini, (Lepidoptera: Tortricidae: Tortricinae)

Australian Journal of Zoology ◽

10.1071/zo9650613 ◽

1965 ◽

Vol 13 (4) ◽

pp. 613 ◽

Cited By ~ 7

Author(s):

IFB Common

Keyword(s):

New Species ◽

New Zealand ◽

Rain Forest ◽

New Guinea ◽

Wide Distribution ◽

Leaf Miners ◽

Australian Species ◽

Eastern Australia ◽

Two New Species ◽

Cape York

The Australian Tortricini, Schoenotenini, and Chlidanotini together include 40 species in 17 genera. The Tortricini which are represented by 16 species in six genera, fall into two groups, the Phricanthes group with two genera and the Eboda group with four genera. Phricanthes Meyr. contains four Australian species, P. peistica and P. diaphorus being described as new. The other two species have a wide distribution abroad. The larvae attack plants in the family Dilleniaceae. The endemic genus Scolioplecta Meyr. includes seven widely scattered species, of which S. exochus and S. allocotus are described as new. A new species, A. diapella, from the Cape York Peninsula is referred to Amboyna Razowski, based on an Indonesian species. Anameristes, gen. nov. is a monotypic genus from north Queensland rain forest, established for Eboda cyclopleura Turn. Eboda Walk, contains one Australian species, and a series of others in the Indo- Malayan and Papuan areas. Asterolepis Razowski includes three species from Australia and New Guinea, with A. earina from Cape York and A. brandti from Papua described as new. The Schoenotenini are represented by 19 Australian species in seven genera. Two elements are distinguished. The Proselena group ranges from India to the New Hebrides and Rapa, including eastern Australia and New Zealand, while the Schoenotenes group has reached its greatest diversity in New Guinea. Proselena Meyr, has two species; Syncratus, gen. nov. has two new species, S. scepanus and S. paroecus; Tracholena, gen, nov., with type species Cnephasia sulfurosa Meyr., has three species; and Palaeotoma Meyr. is monotypic. The larvae of Proselena are leaf miners in Bursaria, those of T. sulfurosa tunnel in the bark of exotic Cupressus, while Palaeotoma has larvae boring in insect galls on Eucalyptus. Larval characters of these are discussed and compared with those of the New Zealand Prothelymna and Dipterina. The wide-ranging Diactenis Meyr., with a single new Australian species D. tryphera, may also belong to this group. Two genera of the Schoenotenes group are known from Australia. Cornuticlava Diak. includes three rain forest species in northern Queensland, including C. aritrana and C. phanera described as new. Epitrichosma Low. contains seven Australian species, one of which comes from the Darwin area, another E. hesperia, sp. nov. from south-western Australia, one from rain forest in southern Queensland and eastern New South Wales, and four including two new species E. ceramina and E. metreta from north-eastern Queensland. The last also occurs in New Guinea. The Chlidanotini contain five Australian species in four genera. Trymalitis Meyr. and Caenognosis Wals. are small but widely distributed Old World genera. The two new monotypic endemic genera Daulocnema, based on D. epicharis, sp. nov., and Leurogyia, based on L. peristictum, sp. nov., are described. The venation, genitalia, mouth-parts, and other adult structures, used to distinguish the genera, together with the larval characters of a few species, are discussed and figured. The genitalia of both sexes and the wings of the Australian species are figured and keys to the genera and species are given.

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

Zootaxa ◽

10.11646/zootaxa.4858.2.2 ◽

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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Two new species of Paramunnidae (Crustacea, Isopoda, Asellota) from the South Shetland Islands

Antarctic Science ◽

10.1017/s0954102004002093 ◽

2004 ◽

Vol 16 (3) ◽

pp. 239-252 ◽

Cited By ~ 2

Author(s):

JOSÉ CASTELLÓ

Keyword(s):

New Species ◽

The Other ◽

South Shetland Islands ◽

The South ◽

Shetland Islands ◽

Two New Species ◽

Lateral Margins

Two new species of Paramunnidae (Crustacea, Isopoda, Asellota) from the South Shetland Islands (sub-Antarctic) are described. Austrosignum escandellae sp. nov. has long eyestalks, dorsum slightly sculpted (transverse bumps on pereonites 1–5), and lateral margins of pereonites rounded. The closest species is A. spinosum Kussakin, 1982 that also shows dorsum sculpted. The main differences are the ocular peduncle (short in A. spinosum) and the lateral margins of pereonites (pointed in A. spinosum). Coulmannia ramosae sp. nov. differs from the other two species of this genus (C. australis Hodgson, 1910 and C. frigida Hodgson, 1910) in that only the margins of pereonites 2–4 are expanded (into one point). A discussion of the Austrosignum/Munnogonium complex is provided with a comparative table of the species involved.

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Synopsis of the spurred species of Lobelia section Stenotium (Campanulaceae) in Sierra Madre Occidental, Mexico, and the description of two new species

Phytotaxa ◽

10.11646/phytotaxa.338.1.3 ◽

2018 ◽

Vol 338 (1) ◽

pp. 33

Author(s):

ROSA IVONNE GUTIÉRREZ-SÁNCHEZ ◽

ARTURO CASTRO-CASTRO ◽

JESÚS GUADALUPE GONZÁLEZ-GALLEGOS ◽

IRMA LORENA LÓPEZ-ENRÍQUEZ ◽

ALFREDO FRÍAS-CASTRO

Keyword(s):

New Species ◽

North America ◽

Wide Distribution ◽

Diverse Group ◽

Middle Portion ◽

Sierra Madre Occidental ◽

Staminal Tube ◽

The Pacific ◽

Sierra Madre ◽

Two New Species

The genus Lobelia is cosmopolitan and comprises 423 species in 18 sections. Lobelia sect. Stenotium is the most diverse group with 153 species, has a wide distribution in continental North America and is segregated into two subgroups based on the presence of spurred flowers. There are 16 spurred Lobelia species that occur in streamside or seep areas, throughout pine and oak mixed forests from USA to Costa Rica, but they are frequent along the Pacific slopes of the Sierra Madre Occidental (SMO), Mexico, where 10 species grow. In this paper we present a synopsis of the spurred species of Lobelia in the SMO and propose two new taxa. First, Lobelia rzedowskii is morphologically similar to L. ayersiae, L. cordifolia and L. endlichii but differs by its rosulate leaves, blades 0.5–1.5 × 0.4–1 cm, subsessile, racemose to paniculate inflorescences, with (4–)10–35(–191) flowers, flowers 4–6 mm long including hypanthium, spur 0.5–1 × 0.5–0.8 mm, with the lower two calyx lobes positioned at the middle portion of the spur, white corolla with a yellow spot above lobe sinuses on the throat and staminal tube 1.3–2.5 mm long. Second, Lobelia saturnini is morphologically similar to L. knoblochii, L. macrocentron, L. mcvaughii and L. villaregalis, but differs from them by leaves (2–)4–14(–17) mm long, petioles 2–6(–17) mm long, solitary flowers, flowers 12–16 mm long including hypanthium, hypanthium 1.2–2.5 mm long, spur 2–3 mm long, pedicels (1.3–)2–9(–12) cm long and anthers 1–2.2 mm long. We include an identification key for spurred species of Lobelia in the SMO, photographs, distribution notes with a map, and illustrations.

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Revision of Southern Hemisphere Austronanus Hodgson, 1910, with two new genera and five new species of Paramunnidae (Crustacea: Isopoda: Asellota)

Zootaxa ◽

10.11646/zootaxa.1111.1.2 ◽

2006 ◽

Vol 1111 (1) ◽

pp. 21 ◽

Cited By ~ 6

Author(s):

JEAN JUST ◽

GEORGE D.F. WILSON

Keyword(s):

New Species ◽

Southern Hemisphere ◽

Type Species ◽

New Genus ◽

Cold Water ◽

New Genera ◽

Macquarie Island ◽

Subantarctic Islands ◽

Two New Species ◽

Lateral Margins

Paramunnid species of Southern Hemisphere cold-water Austronanus Hodgson, 1910 and related genera are characterised by simple, smooth, flattened, rather elongate oval bodies, a broadly projecting frontal head margin, well-developed, short, mostly distally bulging eyestalks with ommatidia, pereonites with lateral margins contiguous, rounded or truncate, and dorsally visible coxae V–VII. Just and Wilson (2004) rejected synonymy of Austronanus with Paramunna Sars proposed by Nordenstam (1933), following a revision of the latter genus. The type species, Austronanus glacialis Hodgson, 1910, is re-described based on topotypic material from McMurdo Sound, Antarctica, (the holotype is a small manca). The types of Paramunna dentata Nordenstam, 1933 and P. dubia Hale, 1937 are re-described and the two species referred to Austronanus together with three new Antarctic and subantarctic species, A. aucklandensis, A. gelidus and A. mawsoni. Paramunna patagoniensis Winkler, 1994 is redescribed and made the type species of a new genus, Xigonus. A new genus, Stephenseniellus, is established for two new species from the subantarctic islands south of New Zealand and Australia, S. palliolatipes (type species) from Macquarie Island, and S. serraticornis (originally reported by Stephensen, 1927 as “Paramunna (serrata (Richardson) ?”) from Auckland Island.

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Two new species of Colletteidae (Crustacea: Tanaidacea: Tanaidomorpha) from Bransfield Strait, Antarctica

European Journal of Taxonomy ◽

10.5852/ejt.2017.364 ◽

2017 ◽

Author(s):

Juliana L. Segadilha ◽

Kátia C. Dos Santos ◽

Cristiana S. Serejo

Keyword(s):

New Species ◽

The Other ◽

Bransfield Strait ◽

Number Of Species ◽

Two New Species ◽

Lateral Margins

Samples from deep benthic areas in the Bransfield Strait, Antarctica, revealed the presence of two new species of Colletteidae: Filitanais elongatus sp. nov. and Macrinella lavradoae sp. nov. Filitanais elongatus sp. nov. resembles F. moskalevi in its habitus; it can, however, be distinguished by characters such as the pleonites and pleotelson with lateral margins parallel and the uropod exopod being longer than half of the first endopod article. Macrinella lavradoae sp. nov. differs from the other species of Macrinella in the shape of the uropod and the pleotelson, with the uropod exopod shorter than the first article of the endopod, the uropod about as long as the pleotelson and the pleotelson with a rounded tip. The number of species of Tanaidacea recorded from Antarctica increases to 162, while the colletteids are now represented by 16 species. Moreover, the diagnosis of the genus Filitanais is herein modified.

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Two new species of Temeritas Richards (Collembola, Symphypleona, Sminthuridae) from Neotropical Region, with comments on the genus

Zootaxa ◽

10.11646/zootaxa.4586.3.9 ◽

2019 ◽

Vol 4586 (3) ◽

pp. 536 ◽

Cited By ~ 1

Author(s):

GLEYCE DA SILVA MEDEIROS ◽

BRUNO CAVALCANTE BELLINI

Keyword(s):

New Species ◽

Antennal Segment ◽

Neotropical Region ◽

Identification Key ◽

Two New Species ◽

Lateral Margins ◽

Small Genus

Temeritas Richards is a small genus of Sminthuridae with 40 species described worldwide, 10 of them from Neotropical Region. Herein we describe in detail two new species of the genus from Brazil: T. andreazzei sp. nov., similar to other neotropical taxa such T. amazonensis Arlé & Oliveira and T. caatingae Arlé & Oliveira in the presence of several long chaetae on body and appendages, absence of oval organs on tibiotarsi and presence of mucronal chaeta, but can be readily separate from both by its exclusive combination of fourth antennal segment articles and head, male’s parafurcal area and dorsal dens chaetotaxy; and T. paradoxalis sp. nov., unique in the genus by the combination of low number of fourth antennal segment articles, absence of remarkably long chaetae on third and second antennal segments and head, ungues with serrated dorsal and lateral margins, and mucronal chaeta absent. We also present an updated diagnosis, a comparison of neotropical Temeritas with an identification key to these species and notes on the genus.

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