Systematic revision and morphological phylogenetic analysis of Anchylorhynchus Schoenherr, 1836 (Coleoptera, Curculionidae: Derelomini)

Zootaxa ◽  
2020 ◽  
Vol 4839 (1) ◽  
pp. 1-98 ◽  
Author(s):  
BRUNO A. S. DE MEDEIROS ◽  
SERGIO A. VANIN
Keyword(s):  
Common Ancestor ◽  
Strong Support ◽  
Taxonomic Revision ◽  
Valid Species ◽  
Systematic Revision ◽  
Software Pipeline ◽  
Plant Associations ◽  
Dichotomous Key ◽  
The Common ◽  
Species Descriptions

Anchylorhynchus Schoenherr is a genus of palm-associated weevils currently including 22 described species in the Neotropics. These weevils engage in brood pollination interactions with species in at least four genera of palms (Arecaceae), representing an emerging system for the study of mutualisms. Here we revise the taxonomy of Anchylorhynchus and propose the first phylogenetic hypothesis for the group, based on morphology. Anchylorhynchus chrysomeloides sp. nov., Anchylorhynchus goiano sp. nov., Anchylorhynchus imitator sp. nov., Anchylorhynchus latipes sp. nov., Anchylorhynchus multisquamis sp. nov. and Anchylorhynchus rectus sp. nov. are described, Anchylorhynchus gottsbergerorum Vanin is a new junior subjective synonym of Anchylorhynchus bicarinatus O’Brien, and Anchylorhynchus eriospathae Bondar and Anchylorhynchus pictipennis Hustache are new junior subjective synonyms of Anchylorhynchus tremolerasi Hustache, resulting in 25 valid species for the genus. We provide genus and species descriptions with a new dichotomous key to the species and updated information on geography and host associations based on museum records and extensive new collections. We also produce a new morphological matrix with 113 characters, 11 of them based on measurements while accounting for allometry, correlation and power to delimit groups. The software pipeline to produce these characters was encoded in a graphical user interface named DiscretzR, made available here. Analysis of this matrix under parsimony and Bayesian inference resulted in strong support for the monophyly of Anchylorhynchus, but weaker support for most clades within the genus. Reconstruction of the host plant associations indicates that the common ancestor of Anchylorhynchus visited flowers of Syagrus Mart., with later transitions to other genera restricted to one of the major clades of Anchylorhynchus. This taxonomic revision with the first phylogeny for the group provides a foundation for future evolutionary studies in the genus. 

scholarly journals Evolution, Diversification, and Biogeography of Grasshoppers (Orthoptera: Acrididae)

2018 ◽  
Vol 2 (4) ◽  
Author(s):  
Hojun Song ◽  
Ricardo Mariño-Pérez ◽  
Derek A Woller ◽  
Maria Marta Cigliano
Keyword(s):  
South America ◽  
Common Ancestor ◽  
Taxonomic Revision ◽  
Valid Species ◽  
Mitochondrial Genomes ◽  
Behavioral Diversity ◽  
The Family ◽  
The Common ◽  
Biogeographical Analysis ◽  
Forest Habitats

Abstract The grasshopper family Acrididae is one of the most diverse lineages within Orthoptera, including more than 6,700 valid species distributed worldwide. Grasshoppers are dominant herbivores, which have diversified into grassland, desert, semi-aquatic, alpine, and tropical forest habitats, and exhibit a wide array of morphological, ecological, and behavioral diversity. Nevertheless, the phylogeny of Acrididae as a whole has never been proposed. In this study, we present the first comprehensive phylogeny of Acrididae based on mitochondrial genomes and nuclear genes to test monophyly of the family and different subfamilies as well as to understand the evolutionary relationships among them. We recovered the monophyletic Acrididae and identified four major clades as well as several well-characterized subfamilies, but we also found that paraphyly is rampant across many subfamilies, highlighting the need for a taxonomic revision of the family. We found that Acrididae originated in the Paleocene of the Cenozoic period (59.3 million years ago) and, because the separation of South America and Africa predates the origin of the family, we hypothesize that the current cosmopolitan distribution of Acrididae was largely achieved by dispersal. We also inferred that the common ancestor of modern grasshoppers originated in South America, contrary to a popular belief that they originated in Africa, based on a biogeographical analysis. We estimate that there have been a number of colonization and recolonization events between the New World and the Old World throughout the diversification of Acrididae, and, thus, the current diversity in any given region is a reflection of this complex history.

Two new species of the problematic harpacticoid genus Itunella (Copepoda, Canthocamptidae)

Crustaceana ◽  
2021 ◽  
Vol 94 (8) ◽  
pp. 951-972
Author(s):  
Tomislav Karanovic
Keyword(s):  
Sandy Beach ◽  
East Coast ◽  
Intraspecific Variability ◽  
Alternative Methods ◽  
Valid Species ◽  
Single Female ◽  
Apical Seta ◽  
Dichotomous Key ◽  
Polymorphic Species ◽  
Species Descriptions

Abstract The genus Itunella Brady, 1896 has a troubled taxonomic past, partly because of paucity of its members, but mostly because of inadequate research. A lack of detail in species descriptions and redescriptions, absence of alternative methods for testing species hypotheses, combined with a notion that most marine and estuarine animals have wide distributions and enormous intraspecific variability, all resulted in blurring of some interspecific boundaries, synonymizing without examination of the type material, and founding species diagnoses on dubious characters. Itunella yeondeokensis sp. nov. is described here in great detail from a small sandy beach on the east coast of Korea. It differs from all reported and illustrated congeners by an extremely long inner apical seta on the third exopodal segment of second to fourth swimming legs. This is the second member of this genus from Korea, the first one being described from three estuaries also on the east coast. All other congeners are European species. An overview of all published species and records of this genus is provided, as well as a dichotomous key to valid species to aid in their identification. Itunella kieferi sp. nov. is a new name for a single female from Germany, previously reported as a member of a widely distributed and polymorphic species.

scholarly journals Morphology-based phylogenetic analysis of the treehopper tribe Smiliini (Hemiptera: Membracidae: Smiliinae), with reinstatement of the tribe Telamonini

Zootaxa ◽  
2011 ◽  
Vol 3047 (1) ◽  
pp. 1 ◽  
Author(s):  
MATTHEW S. WALLACE
Keyword(s):  
Phylogenetic Analysis ◽  
Common Ancestor ◽  
Hind Wing ◽  
Morphological Characters ◽  
Dorsal Margin ◽  
Incertae Sedis ◽  
Plant Associations ◽  
Original Dataset ◽  
The Common ◽  
Morphological Differences

Members of the Smiliini, the nominotypical tribe of the large New World subfamily Smiliinae, are predominately Nearctic in distribution. This tribe included 169 mostly tree-feeding species in 23 genera. A parsimony-based phylogenetic analysis of an original dataset comprising 89 traditional and newly discovered morphological characters for 69 species, including representatives of 22 of the 23 described genera of Smiliini and five other previously recognized tribes of the subfamily, resulted in a single most parsimonious tree with three major clades. The broad recent concept of Smiliini (including Telamonini as a junior synonym) was not recovered as monophyletic by the analysis. Instead, the analysis supported narrower definitions of both Telamonini, here reinstated from synonymy, and Smiliini. A key and diagnoses are given to define these tribes, along with discussions of their phylogeny, biogeography, and host plant associations. The genera Antianthe Fowler, Hemicardiacus Plummer, Smilirhexia McKamey, and Tropidarnis Fowler are placed as Smiliinae, incertae sedis. Based on the phylogeny, several genera from both tribes including Atymna Stål, Cyrtolobus Goding, Heliria Stål, and Telamona Fitch are not monophyletic. Diagnostic characters emphasizing the morphological differences between the Smiliini and Telamonini include the dorsal margin of the head, the shape of the pronotum, the size of the pronotal humeral angles, the presence or absence of pronotal longitudinal rugae, the size of forewing cells, variations in the fusion of veins R and M apically in both the foreand hind wing, and the shape of the apex of the female second valvulae. Mapping geographic distribution onto the phylogeny suggests that the common ancestor of the ingroup (all three clades) occurred in Central America and Mexico, with multiple dispersals to temperate North America. Many Smiliini and Telamonini feed on various species of oak (Quercus) and the close evolutionary association between these insects and their hosts is discussed.

Systematic revision of Ericydeus Pascoe (Coleoptera: Curculionidae)

1995 ◽  
Vol 26 (4) ◽  
pp. 393-424 ◽  
Author(s):  
Analia A. Lanteri
Keyword(s):  
United States ◽  
New Species ◽  
United States Of America ◽  
Cladistic Analysis ◽  
The United States ◽  
Valid Species ◽  
Systematic Revision ◽  
Distribution Maps ◽  
Dichotomous Key ◽  
Three New Species

AbstractThe genus Ericydeus Pascoe (Polydrosinae: Naupactini) distributed throughout the United States of America up to Argentina is revised and a cladistic analysis including 16 species is conducted. Three new species are described: E. bahiensis, E. argentinensis and E. cupreolus. Ericydeus humeralis Hustache is synonymized under E. nigropunctatus (Chevrolat); and E. modestus viridans (Boheman) and E. modestus duodecimpunctatus (Dalla-Torre, Emden & Emden) are elevated to species rank. Other valid species are: E. hancocki (Kirby), E. schoenherri (Perty), E. sedecimpunctatus (Linnaeus), E. yucatanus (Champion), E. roseiventris (Champion), E. quadripunctatus (Champion), E. modestus (Gyllenhal), E. forreri (Champion), E. lautus (LeConte) and E. placidus (Horn). In the cladogram obtained the species from South America gather in a clade (E. argentinensis, E. sedecimpunctatus, E. nigropunctatus, E. schoenherri, E. hancocki, and E. bahiensis) and the species from Central and North America form a separate clade (E. yucatanus, E. roseiventris - E. quadripunctatus, E. cupreolus, E. viridans - E. modestus, E. duodecimpunctatus, E. forreri, E. lautus - E. placidus). The character evolution follows a southern-northern direction. The paper includes a redescription of the genus, redescriptions or descriptions of its 16 species, a dichotomous key, habitus photographs, drawings of diagnostic structures, distribution maps, a cladogram, and a discussion of the phylogeny and distribution of the genus.

A taxonomic revision of the genus Haplosyllis Langerhans, 1887 (Polychaeta: Syllidae: Syllinae)

Zootaxa ◽  
2009 ◽  
Vol 2220 (1) ◽  
pp. 1-40 ◽  
Author(s):  
PATRICIA LATTIG ◽  
DANIEL MARTIN
Keyword(s):  
Taxonomic Revision ◽  
New Combination ◽  
Valid Species ◽  
Incertae Sedis ◽  
Dichotomous Key ◽  
Taxonomic Feature ◽  
Nomina Dubia ◽  
San Martín

The genus Haplosyllis Langerhans, 1887 is revised based on available types and newly collected specimens. 19 species are considered as valid, five as incertae sedis and four are referred to nomina dubia. Trypanoseta (Imajima, 1966) is synonymised with Haplosyllis, as the presence of trepan is considered a non-robust taxonomic feature, affecting H. ohma new comb. (Imajima & Hartman, 1964) and H. granulosa new comb. (Lattig, San Martín & Martín, 2007). Haplosyllis streptocephala (Grube, 1857) is a new combination and two species are considered to belong to Alcyonosyllis Glasby & Watson, 2001: A. bisetosa new comb. (Hartmann-Schröder, 1960) and A. gorgoniacola new comb. (Sun & Yang, 2004). All valid species are described and figured except those described during the last decade, which only includes diagnoses and chaetae illustrations. A dichotomous key to all valid species of Haplosyllis is provided.

Taxonomic revision of the New World genus Chlorotabanus Lutz, 1913 (Diptera: Tabanidae)

Zootaxa ◽  
2010 ◽  
Vol 2656 (1) ◽  
pp. 1 ◽  
Author(s):  
TIAGO KÜTTER KROLOW ◽  
AUGUSTO LOUREIRO HENRIQUES
Keyword(s):  
New Species ◽  
International Institutions ◽  
New World ◽  
Taxonomic Revision ◽  
External Morphology ◽  
Type Material ◽  
Valid Species ◽  
Dichotomous Key ◽  
Three New Species ◽  
New Synonymy

The genus Chlorotabanus Lutz is revised herein based on examination of external morphology of type material and specimens from Brazilian and international institutions (total of 2,134 specimens, 201 males and 1,933 females). Eight currently valid species are recognized: C. crepuscularis (Bequaert, 1926); C. fairchildi Wilkerson, 1979; C. flagellatus Krolow & Henriques, 2009; C. inanis (Fabricius, 1787); C. leucochlorus Fairchild, 1961; C. mexicanus (Linnaeus, 1758); C. ochreus Philip & Fairchild, 1956; C. parviceps (Kröber, 1934). Three new species are described: C. falsiflagellatus n. sp. (Brazil, Amazonas), C. leuconotus n. sp. (Amazon region) and C. microceratus n. sp. (Brasil, Maranhão). Tabanus tetrapunctus Thunberg, 1827, previously synonymous with C. mexicanus, here is synonymous with C. crepuscularis (new synonymy). We provide diagnosis, descriptions, redescriptions, distribution records, illustrations and discussion for all species, as well as a dichotomous key for identification of females.

Contributions to the taxonomy of the Normanellidae (Copepoda, Harpacticoida): description of a new genus from the Brazilian continental shelf and re-assignment of Pseudocletodes vararensis Scott & Scott, 1893 (ex Nannopodidae)

Zootaxa ◽  
2009 ◽  
Vol 2233 (1) ◽  
pp. 1-38 ◽  
Author(s):  
TERUE CRISTINA KIHARA ◽  
RONY HUYS
Keyword(s):  
Continental Shelf ◽  
New Genus ◽  
Common Ancestor ◽  
Valid Species ◽  
Northern Coast ◽  
New Genus And Species ◽  
Paulo State ◽  
The Family ◽  
The Common ◽  
Caudal Rami

A new genus and species of Normanellidae (Copepoda, Harpacticoida), Paranaiara inajae gen. et sp. nov., is described from the continental shelf off the northern coast of São Paulo State, Brazil. The new genus differs from the type genus Normanella Brady, 1880 and Sagamiella Lee & Huys, 1999 in its presence of lamelliform caudal rami, a maxillulary endopod represented by 2 setae, an unarmed maxillipedal syncoxa, and reduced setation on P2 enp-2 (without outer spine) and P3 enp-2 (with only 2 inner setae). All these apomorphic character states are shared with the genus Pseudocletodes Scott & Scott, 1893, formerly placed in the family Nannopodidae (ex Huntemanniidae) and here assigned to the Normanellidae. Pseudocletodes can be differentiated from Paranaiara by the loss of the P1 endopod and of the inner seta on P2–P4 enp-1, the presence of only 2 inner setae on P2 enp-2 (instead of 3) and only 1 inner seta on P4 exp-3 (instead of 2), the presence of a second inner seta on P4 enp-2 (instead of 1), the morphology of the fifth pair of legs which are not medially fused and have only 3 endopodal elements (instead of 4) in the male, and the well developed caudal ramus seta V (instead of rudimentary). It is postulated that prehensility of the P1 endopod was secondarily lost in the common ancestor of Paranaiara and Pseudocletodes. An updated family diagnosis of the Normanellidae and a dichotomous identification key to the 22 currently valid species are presented.

Systematics and host plant associations of the Australian lace bug genus Nethersia (Insecta: Heteroptera: Tingidae), including the description of eighteen new species

2017 ◽  
Vol 48 (1) ◽  
pp. 1-95 ◽  
Author(s):  
Gerasimos Cassis ◽  
Philippe Koenig ◽  
Celia Symonds ◽  
Ryan Shofner
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Host Plant ◽  
Host Plants ◽  
Valid Species ◽  
Systematic Revision ◽  
Incertae Sedis ◽  
Lace Bug ◽  
Plant Associations ◽  
Key Species

A systematic revision of the lace bug genusNethersiaHorváth 1925 is given including a redescription of the genus. Previously described speciesN.absimilisDrake 1944,N.haplotesDrake and Ruhoff 1962,N.maculosaHorváth 1925 andN.setosa(Hacker 1927) are redescribed. The New Caledonian speciesTingis chazeauiGuilbert (1997) is transferred toNethersia. Eighteen new species are described:N.acaciaphilasp.n.,N.apphasp.n.,N.bipannanotasp.n.,N.boorabbinensissp.n.,N.costatasp.n.,N.finlayaesp.n.,N.kimberleyensissp.n.,N.magnasp.n.,N.mareebasp.n.,N.mcquillanisp.n.,N.nigrasp.n.,N.pilbarasp.n.,N.silveiraesp.n.,N.stipulasp.n.,N.tatarnicisp.n.,N.tanamisp.n.,N.tomentosasp.n. andN.westralensissp.n.Nethersia pugnaDrake 1944 is removed from synonymy withN.maculosaHorváth and treated as a valid species. An identification key species is given which relies on colour patterning, vestiture and texture of the dorsum.Nethersia nigritarsis(Horváth, 1925) is transferred fromNethersiatoTingisand designated asincertae sedis. Phylogenetic analysis ofNethersiawas undertaken resulting in fully resolved topologies for a range of concavity constant settings (K= 2–6) under implied weights. The plant associations ofNethersiaare documented, with most species recorded from phyllodinousAcaciaspecies, with twenty designated as host plants.

The Possible Common Origin of tRNA and 5S rRNA

1983 ◽  
Vol 38 (5-6) ◽  
pp. 501-504 ◽  
Author(s):  
Mária Ujhelyi
Keyword(s):  
Common Ancestor ◽  
Common Origin ◽  
5S Rrna ◽  
Mitochondrial Trna ◽  
Trna Molecule ◽  
The Common

Seryl tRNA (anticodon GCU) from mammalian mito­chondria shows in comparison to other mitochondrial tRNAs additional special features differing from the generalized tRNA model. When arranged in the tradi­tional cloverleaf form, eight bases fall within the TΨC loop, and the entire dihydrouridine loop is lacking. This seryl tRNA molecule is therefore shorter than other tRNAs. It was originally thought to represent a mito­chondrial analogon of 5 S rRNA and its precise classifica­tion is still disputed. The present studies suggest that this mitochondrial tRNA represents a fossil molecule which is related to the common ancestor of the present tRNA and 5 S rRNA molecules.

scholarly journals Role of the Digestive Gland in Ink Production in Four Species of Sea Hares: An Ultrastructural Comparison

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Jeffrey S. Prince ◽  
Paul Micah Johnson
Keyword(s):  
Digestive Gland ◽  
Common Ancestor ◽  
Aplysia Californica ◽  
Digestive Cell ◽  
Digestive Cells ◽  
Sea Hare ◽  
Red Algal ◽  
The Common ◽  
Algal Chloroplast

The ultrastructure of the digestive gland of several sea hare species that produce different colored ink (Aplysia californicaproduces purple ink,A. julianawhite ink,A. parvulaboth white and purple ink, whileDolabrifera dolabriferaproduces no ink at all) was compared to determine the digestive gland’s role in the diet-derived ink production process. Rhodoplast digestive cells and their digestive vacuoles, the site of digestion of red algal chloroplast (i.e., rhodoplast) inA. californica, were present and had a similar ultrastructure in all four species. Rhodoplast digestive cell vacuoles either contained a whole rhodoplast or fragments of one or were empty. These results suggest that the inability to produce colored ink in some sea hare species is not due to either an absence of appropriate digestive machinery, that is, rhodoplast digestive cells, or an apparent failure of rhodoplast digestive cells to function. These results also propose that the digestive gland structure described herein occurred early in sea hare evolution, at least in the common ancestor to the generaAplysiaandDolabrifera. Our data, however, do not support the hypothesis that the loss of purple inking is a synapomorphy of the white-ink-producing subgenusAplysia.

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