scholarly journals New genus of the family Delphacidae (Homoptera: Cicadina) from North America

2019 ◽  
Vol 323 (3) ◽  
pp. 369-372
Author(s):  
A.F. Emeljanov

A new genus, Euryburnia gen. nov. (type species: Megamelus magnifrons Crawford, 1914) is erected to accommodate the group of Nearctic species of the family Delphacidae erroneously placed by Hamilton (2002) in the genus Eurybregma Scott, 1875. The new genus differs from Eurybregma by narrower metope without intermediate carinae on eumetope (only median carina is developed). According to male genitalia structure the new genus is close to the genera Unkanodes Fennah, 1956 and Chilodelphax Vilbaste, 1968, but distinguished by angular (not rounded) latero-ventral lobes of pygofer and by pygofer phragme without teeth and processes. From the genus Eurybregma the new genus differs by the presence of latero-ventral lobes of male pygofer. According to presence of unique, well developed beak-shaped basal lobes of dorso-lateral plates of ovipositor (first valvifers) the new genus is distinguished within all Delphacidae. New combinations proposed: Euryburnia magnifrons (Crawford, 1914), comb. nov. (=Megamelus magnifrons Crowford, 1914), Euryburnia montana (Beamer, 1952), comb. nov., (=Eurysa montana Beamer, 1952), Euryburnia obesa (Beamer, 1952), comb. nov. (=Eurysaobesa Beamer, 1952), Euryburnia eurytion (Hamilton, 2002), comb. nov. (=Eurybregma eurytion Hamilton, 2002).

1988 ◽  
Vol 62 (2) ◽  
pp. 218-233 ◽  
Author(s):  
John Mark Malinky

Concepts of the family Hyolithidae Nicholson fide Fisher and the genera Hyolithes Eichwald and Orthotheca Novak have been expanded through time to encompass a variety of morphologically dissimilar shells. The Hyolithidae is here considered to include only those hyolithid species which have a rounded (convex) dorsum; slopes on the dorsum are inflated, and the venter may be flat or slightly inflated. Hyolithes encompasses species which possess a low dorsum and a prominent longitudinal sulcus along each edge of the dorsum; the ligula is short and the apertural rim is flared. The emended concept of Orthotheca includes only those species of orthothecid hyoliths which have a subtriangular transverse outline and longitudinal lirae covering the shell on both dorsum and venter.Eighteen species of Hyolithes and one species of Orthotheca from the Appalachian region and Western Interior were reexamined in light of more modern taxonomic concepts and standards of quality for type material. Reexamination of type specimens of H. similis Walcott from the Lower Cambrian of Newfoundland, H. whitei Resser from the Lower Cambrian of Nevada, H. billingsi Walcott from the Lower Cambrian of Nevada, H. gallatinensis Resser from the Upper Cambrian of Wyoming, and H. partitus Resser from the Middle Cambrian of Alabama indicates that none of these species represents Hyolithes. Hyolithes similis is here included under the new genus Similotheca, in the new family Similothecidae. Hyolithes whitei is designated as the type species of the new genus Nevadotheca, to which H. billingsi may also belong. Hyolithes gallatinensis is referred to Burithes Missarzhevsky with question, and H. partitus may represent Joachimilites Marek. The type or types of H. attenuatus Walcott, H. cecrops Walcott, H. comptus Howell, H. cowanensis Resser, H. curticei Resser, H. idahoensis Resser, H. prolixus Resser, H. resseri Howell, H. shaleri Walcott, H. terranovicus Walcott, and H. wanneri Resser and Howell lack shells and/or other taxonomically important features such as a complete aperture, rendering the diagnoses of these species incomplete. Their names should only be used for the type specimens until better preserved topotypes become available for study. Morphology of the types of H.? corrugatus Walcott and “Orthotheca” sola Resser does not support placement in the Hyolitha; the affinities of these species are uncertain.


Zootaxa ◽  
2009 ◽  
Vol 2221 (1) ◽  
pp. 27-40 ◽  
Author(s):  
JIANG-LI TAN ◽  
BAO-ZHEN HUA

Bicaubittacus gen. nov., the second genus of the family Bittacidae from the Oriental Region, is erected with Bittacus appendiculatus Esben-Petersen, 1927 as its type species. A key to the 17 extant genera of Bittacidae is compiled to include the new genus. Two new species, Bicaubittacus yangi sp. nov. and Bi. mengyangicus sp. nov. are described and illustrated from China. Three new combinations, Bicaubittacus appendiculatus (Esben-Petersen, 1927) and Bi. longiprocessus (Huang & Hua, 2005) from China, and Bi. burmanus (Tjeder, 1974) from Myanmar (formerly Burma), are transferred from the genus Bittacus Latreille. A key to the five species of Bicaubittacus is provided. The validity of Neobittacus and Thyridates is briefly discussed


1983 ◽  
Vol 61 (1) ◽  
pp. 31-44 ◽  
Author(s):  
Frank Dicosmo ◽  
T. R. Nag Raj ◽  
Bryce Kendrick

An emendation of the Phacidiaceae is presented. Of 24 genera placed in the family by previous authors, only 2, Lophophacidium and Phacidium (=Phacidiostroma) are retained. Four new species are described, and three new combinations made, in Phacidium. The Apostrasseria or Ceuthospora anamorphs of six of these are also described. Phacidium symplocinum is made the type species of a new genus, Ascluella, tentatively maintained in the Dermateaceae. The new combinations, Coccomyces gaultheriae, Odontotrema sieversiae, Pseudophacidium kumaonense, and Schizoxylon hemisphaericum, are introduced.


2020 ◽  
Vol 70 (3) ◽  
pp. 2147-2154 ◽  
Author(s):  
Guang-Da Feng ◽  
Xian-Jiao Zhang ◽  
Song-Zhen Yang ◽  
An-Zhang Li ◽  
Qing Yao ◽  
...  

During a phylogenetic analysis of Sphingorhabdus and its closely related genera in the family Sphingomonadaceae , we found that the genus Sphingorhabdus and the species Sphingopyxis baekryungensis might not be properly assigned in the taxonomy. Phylogenetic, phenotypic and chemotaxonomic characterizations clearly showed that the genus Sphingorhabdus should be reclassified into two genera (Clade I and Clade II), for which the original genus name, Sphingorhabdus , is proposed to be retained only for Clade I, and a new genus named as Parasphingorhabdus gen. nov. is proposed for Clade II with four new combinations: Parasphingorhabdus marina comb. nov., Parasphingorhabdus litoris comb. nov., Parasphingorhabdus flavimaris comb. nov. and Parasphingorhabdus pacifica comb. nov. Moreover, Sphingopyxis baekryungensis should represent a novel genus in the family Sphingomonadaceae , for which the name Novosphingopyxis gen. nov. is proposed, with a combination of Novosphingopyxis baekryungensis comb. nov. The study provides a new insight into the taxonomy of closely related genera in the family Sphingomonadaceae .


1979 ◽  
Vol 111 (8) ◽  
pp. 949-954 ◽  
Author(s):  
Leonard A. Kelton

AbstractBrooksella n. gen. is described (type-species, Asciodema inconspicua Uhler). Lectotypes are designated for Asciodema inconspicua Uhler and Orthotylus viridicatus Uhler. The following North American species currently in Melanotrichus Reuter are transferred to Brooksella: Asciodema inconspicua Uhler (= M. atricornis Knight, n. syn.), M. chelifer Knight (= M. brevirostris Knight, M. custeri Knight, n. syn.), M. azteci Knight, M. incurvus Knight, M. malvastri Knight, M. nevadensis Knight, M. nicholi Knight, M. shoshonea Knight, Orthotylus althaeae Hussey, O. ferox Van Duzee, O. tibialis Van Duzee, and O. viridicatus Uhler. Male genitalia and tergal process are illustrated for each species and a key to separate them is provided.


Fossil Record ◽  
2021 ◽  
Vol 24 (1) ◽  
pp. 135-139
Author(s):  
Andrei A. Legalov

Abstract. A new genus, Palaeatalasis gen. nov. (type species P. monrosi sp. nov.), from the tribe Megamerini (Chrysomelidae: Sagrinae) from the early-middle Eocene Green River Formation is described and illustrated. The new genus is similar to the Recent Atalasis Lacordaire, 1845 but differs from it in the subparallel sides of the pronotum, metafemora without teeth, and non-emarginate eyes. It differs from the Eocene Eosagra Haupt, 1950 in the large, convex, non-emarginate eyes, wide elytra, and transverse pronotum. The new genus is distinguished from the Paleocene Gallopsis Legalov, Kirejtshuk et Nel, 2019 in the wide forehead and convex eyes. It is the first record of the Sagrinae from North America and the fourth known species of the family Chrysomelidae from the Green River.


1976 ◽  
Vol 108 (1) ◽  
pp. 23-48 ◽  
Author(s):  
Evert E. Lindquist

AbstractThe systematic status of the genus Tarsocheylus Berlese, 1904 and the position of the family Tarsocheylidae Atyeo and Baker, 1964 in the Prostigmata is reviewed. The family does not belong in either the Raphignathoidea or the Anystoidea but in its own superfamily, the Tarsocheyloidea, which is described for this purpose. In turn, this superfamily is placed alongside the Heterocheyloidea in the Heterostigmata.Because the type-species of Tarsocheylus, T. paradoxus Berlese, 1904, is conspecific with Hoplocheylus discalis Atyeo and Baker, 1964 (new synonymy), the concept of Hoplocheylus Atyeo and Baker, 1964, which has remained until now as originally proposed, is the same as that of Tarsocheylus. However, a new case is made for recognizing these genera as mutually distinct, based on other morphological criteria. Tarsocheylus atomarius Berlese, 1913, the type-species of Hoplocheylus, is apparently conspecific with Hoplocheylus canadensis Marshall, 1966 (new synonymy) and perhaps with one or two other described species from North America. A third generic entity, represented by Hoplocheylus johnstoni Atyeo and Baker, 1964, is noted but not named or formally described. Hoplocheylus pickardi Smiley and Moser, 1968 is conspecific with H. similis Delfinado and Baker, 1974 (new synonymy).Hemitarsocheylus Soliman and Zaher, 1975, which was described as a new genus in the Tarsocheylidae, is congeneric with Stigmocheylus Berlese, 1910 (new synonymy). This genus does not belong in the Tarsocheyloidea, but rather in the Anystoidea.A list of character states found useful in recognizing groupings of species of Tarsocheylidae is presented. Based on the collection data with specimens representing described and undescribed species at hand, the known distribution of the Tarsocheylidae is extended to include Australia and western North America, and the second known instance of an association with passalid beetles is recorded.From a phylogenetic standpoint, the Tarsocheyloidea and Heterocheyloidea are proposed as sister groups that together constitute a new suprafamilial taxon, the Tarsocheylina. In turn, the Tarsocheylina and Tarsonemina are proposed as sister groups, and both are described; together, they form the Heterostigmata.The systematic and phylogenetic relationships of the Heterostigmata (including the Tarsonemina) to the Prostigmata and the Astigmata are reviewed. Not only should the Heterostigmata be retained in the Prostigmata but it should be lowered in hierarchic rank, such that it is a part of the Eleutherengona. The stock that gave rise to the Anystoidea and related superfamilies is shown to be ancestral to the Heterostigmata as well.


2007 ◽  
Vol 15 (2) ◽  
pp. 301-303
Author(s):  
V.M. Gnezdilov ◽  
M.R. Wilson

A new genus Pamphylium gen. n. (type species: Latematium cingulatum Dlabola, 1983) is erected. Irakopterum Dlabola, 1985 is placed in synonymy under Libanissum Dlabola, 1980 and Paratetrica Distant, 1916 is placed in synonymy under Thabenoides Distant, 1916. New combinations for 11 species are proposed.


Acarologia ◽  
2018 ◽  
Vol 58 (Suppl) ◽  
pp. 25-42
Author(s):  
Kamila Hrúzová ◽  
Peter Fenďa

The family Parasitidae comprises two subfamilies, Parasitinae and Pergamasinae. A generic concept of this family is not stable and requires a revision. The number of genera varies depending on authors and their view on the systematics of the family, especially on the rank of taxa. We recognize 23 genera within Parasitinae and 22 genera within Pergamasinae, 4 of them are subdivided into subgenera. A dichotomous key for separation of genera and subgenera is provided. A new genus, Coprocarpais n. g. with type species Parasitus copridis Costa, 1963 is proposed and a diagnosis is given. The genus Erithosoma is not assigned to any subfamily because a description of females is missing. The most pressing taxonomic problems at generic and subgeneric levels are discussed. Fourteen new combinations are proposed.


Phytotaxa ◽  
2014 ◽  
Vol 186 (4) ◽  
pp. 188 ◽  
Author(s):  
Ying-Ying Zhou ◽  
HONG-WEI ZHANG ◽  
JIANG-QIN HU ◽  
Xiao-Feng Jin

Sinalliaria is described here as a new genus of the family Brassicaceae from eastern China, based on the morphological characters and molecular sequences. Sinalliaria differs from the related genus Orychophragmus in having basal leaves petiolate, simple or rarely with 1‒3 lateral lobes (not pinnatisect); cauline leaves petiolate, cordate at base (not sessile, auriculate or amplexicaul at base); petals obovate to narrowly obovate, claw inconspicuous (not broadly obovate, with a claw as along as sepal); siliques truncate (not long-beaked) at apex. The microscopic characters of seed testa also show significant differences between Sinalliaria and Orychophragmus. Phylogenetic evidence from DNA sequences of nuclear ribosomal ITS and plastid region trnL-trnF indicates that Sinalliaria is a distinct group related to Orychophragmus and Raphanus, but these three genera do not form a clade. The new genus Sinalliaria is endemic to eastern China and has only one species and one variety. The new combinations, S. limprichtiana (Pax) X. F. Jin, Y. Y. Zhou & H. W. Zhang and S. limprichtiana var. grandifolia (Z. X. An) X. F. Jin, Y. Y. Zhou & H. W. Zhang are proposed here.


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