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Genus

About: Genus is a research topic. Over the lifetime, 68921 publications have been published within this topic receiving 590966 citations. The topic is also known as: monospecies genus & genus (zoology).


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Journal ArticleDOI
TL;DR: Cladistic analyses of morphological characters of adult bumble bees show significantly higher congruence among characters of the male genitalia than among other characters of males and females, which supportsylogenetic interpretations of groups supported by the combined morphological evidence.
Abstract: . Cladistic analyses of morphological characters of adult bumble bees show significantly higher congruence among characters of the male genitalia than among other characters of males and females. Phylogenetic interpretations of groups supported by the combined morphological evidence (even with minimal assumptions) include (1) that the earliest diverging species belong to the para-phyletic subgenus Mendacibombus, together with Bombus nevadensis and B.confusus; (2) that, in contrast, species of the subgenus Bombus (sensu stricto) share a relatively recent common ancestor with B.pressus and B.rufipes; and (3) that Psithyrus (the social parasites) is a monophyletic group, and the sister-group of B.persicus. For genus-group nomenclature a single genus Bombus (sensu lato) is recommended, to include Psithyrus as another subgenus. Names for sections and for groups of subgenera are synonymized with subgeneric names.

86 citations

Journal ArticleDOI
01 Jan 1970-Grana
TL;DR: The diagnosis of its senior synonym Spiniferites is expanded in order to incorporate additional information gained since 1850 and all species according with the expanded diagnosis are listed.
Abstract: Following the recent official rejection of proposals for conservation of the generic name Hystrichosphaera, the diagnosis of its senior synonym Spiniferites is expanded in order to incorporate additional information gained since 1850 and all species according with the expanded diagnosis are listed (24 species are transferred to Spiniferites). The cyst-family name “Hystrichosphaeraceae” is replaced by the new name “Spiniferitaceae”.

86 citations

Journal ArticleDOI
TL;DR: A species‐level phylogenetic analysis of 32 taxa results in eight most parsimonious cladograms and places Clitaetra as sister to the clade (Herennia+ (Nephilengys+Nephila), which contains the orb‐weaving spider family Nephilidae Simon, but not Deliochus or Phonognatha.
Abstract: This study revises the taxonomy, biology, phylogeny, and biogeography of the basal-most nephilid spider lineage, the Clitaetrinae, with the least known nephilid genus Clitaetra. The five previously known species are redescribed: Clitaetra clathrata Simon from western Africa, C. simoni Benoit from central Africa, C. episinoides Simon from the Comoro Islands and Mayotte, C. perroti Simon from Madagascar, and C. thisbe Simon from Sri Lanka with first descriptions of the males of C. clathrata and C. perroti. Additionally, C. irenae sp. nov. is described in both sexes from southern Africa. Clitaetra biology, so far largely unknown, is presented here based on observations of C. irenae in South Africa, and clitaetrine anatomy is summarized to assess phylogenetic homologies. A species-level phylogenetic analysis of 32 taxa scored for 197 morphological and behavioural characters results in eight most parsimonious cladograms and places Clitaetra as sister to the clade (Herennia+ (Nephilengys+Nephila)). Thus, the orb-weaving spider family Nephilidae Simon contains the (sub)tropical genera Nephila, Nephilengys, Herennia, and Clitaetra, but not Deliochus or Phonognatha. Contra recent cladistic treatments, the nephilines are not tetragnathids, but the sister group to the newly proposed clade, Nephilidae, is ambiguous. The three species clades (subgenera) within Clitaetra show a seemingly old Gondwanan biogeographic pattern: Afroetra subgen. nov., with the three mainland African species, is sister to Clitaetra with the two Indian Ocean island species. Indoetra subgen. nov. contains the unstudied species from Sri Lanka, C. thisbe. Future understanding of the morphology and biology of C. thisbe is important for the polarization of many nephilid features. Vicariance would estimate the clitaetrine subgeneric clades and basal nephilid lineages to be at least 160 Myr old and of Gondwanan origin.

86 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20232,790
20226,199
20212,431
20202,299
20192,015
20182,000