PhyIN: trimming alignments by phylogenetic incompatibilities among neighbouring sites.

In phylogenomics, regions of low alignment reliability and high noise are typically trimmed from multiple sequence alignments before they are used in phylogenetic inference. I introduce a new trimming tool, PhyIN, which deletes regions in which a large proportion of sites (characters) have conflicting phylogenetic signal. It does not require inference of a phylogenetic tree, as it finds neighbouring characters that cannot agree on any possible tree.

, a new genus of jumping spiders (Salticidae, Plexippina) from South Asia, with the new Indian species .

We describe a new plexippine genus, , supported by phylogenomic data from ultraconserved elements (UCEs), Sanger sequences of four genes, and morphological evidence. The type species, (Caleb, Christudhas, Laltanpuii & Chitra, 2014), is transferred from , as is (Caleb, 2022), The phylogenomic data places among the plexippines near C.L.

On the enigmatic jumping spider genus Peckham, 1908 (Araneae, Salticidae, Chrysillini).

The monotypic genus Peckham, 1908, is redefined based on the redescription of the holotype of (Peckham & Peckham, 1907), along with the newly discovered male specimens and intraspecific variation from China, Malaysia, Singapore, and Vietnam. Description, illustrations, and photographs are provided.

Phylogeny and biogeography of harmochirine jumping spiders (Araneae: Salticidae).

We use ultraconserved elements (UCE) and Sanger data to study the phylogeny, age, and biogeographical history of harmochirine jumping spiders, a group that includes the species-rich genus Habronattus, whose remarkable courtship has made it the focus of studies of behaviour, sexual selection, and diversification. We recovered 1947 UCE loci from 43 harmochirine taxa and 4 outgroups, yielding a core dataset of 193 UCEs with at least 50 % occupancy. Concatenated likelihood and ASTRAL analyses confirmed the separation of harmochirines into two major clades, here designated the infratribes Harmochirita and Pellenita.

, a new genus of harmochirine jumping spiders from the Marquesas Islands (Araneae, Salticidae, Harmochirina).

The genus is established for the harmochirine jumping spiders of the Marquesas Islands, formerly placed in F.O. Pickard-Cambridge, 1901 and Prószyński, 2002.

, a new species and genus of plexippine jumping spider from the Western Ghats of India (Salticidae, Plexippini, Plexippina).

We propose a new genus of plexippine jumping spiders from the Western Ghats of India based on the new species While it bears a superficial resemblance to in body form and in membrane-bearing embolus, our UCE phylogenomic data-the first to resolve broad relationships within the Plexippina-as well as morphological features justify its status as a new genus. In addition to the molecular data and morphological descriptions, we provide photographs of living specimens of and information on their natural history.

Taxonomic revision of Orcevia Thorell, 1890, with description of fifteen new species (Araneae, Salticidae, Euophryini).

The Asian euophryine genus Orcevia Thorell, 1890 is revised, and fifteen new species from southern China and Southeast Asia are described: Orcevia bokoblin Yu, Maddison & Zhang, sp. nov. (), O.

Review of Chalcovietnamicus Marusik, 1991, with description of four new species (Araneae, Salticidae, Euophryini).

The euophryine genus Chalcovietnamicus Marusik, 1991, a member of the Laufeia group of genera, is reviewed, and four new species from southern China and Southeast Asia are described with both sexes: Chalcovietnamicus logunovi Yu, Maddison & Zhang, sp. nov., C.

Two new genera of Euophryini from southern China and Malaysia (Araneae, Salticidae, Salticinae).

Two new genera of euophryine jumping spiders in the Laufeia group are established for species from Southeast Asia: Amoenema Yu & Zhang, gen. nov. and Lokina Yu, Maddison & Zhang, gen.

 gen. nov., a new Asian lineage of marpissine jumping spiders (Araneae, Salticidae, Marpissina).

The genus Maddison & Ruiz, , is described for a lineage of bark-dwelling Asian marpissine jumping spiders that represent a dispersal to Eurasia separate from that of the - lineage, according to the phylogeny recovered from analysis of four gene regions. All species of are new to science except (Simon, 1901), , which is transferred from Simon, 1901. is known from Hong Kong, Guangdong, Guangxi, and likely Taiwan.

Revision of the genus Charippus Thorell, 1895, with descriptions of eight new species (Araneae, Salticidae, Euophryini).

The euophryine genus Charippus Thorell, 1895 is revised and eight new species are described: Charippus asper Yu, Maddison Zhang, sp. nov. ( ), C.

Three new and notes on two other jumping spider species of the genus Stenaelurillus Simon, 1886 (Salticidae: Aelurillina) from the Deccan Plateau, India.

We describe three new species of Stenaelurillus Simon, 1886 from the Deccan Plateau of India, and report on populations of S. sarojinae Caleb Mathai, 2014 and S. marusiki Logunov, 2001.

New species of the monotypic thiratoscirtine genera Ajaraneola and Nimbarus (Araneae: Salticidae: Aelurillini: Thiratoscirtina).

Two new species of the currently monotypic thiratoscirtine genera Ajaraneola Wesołowska Russell-Smith, 2011 and Nimbarus Rollard Wesołowska, 2002 are described from Uganda and Cameroon: Ajaraneola pajakwandy sp. nov. (male) and Nimbarus nimbus sp.

A phylogenetic and taxonomic review of baviine jumping spiders (Araneae, Salticidae, Baviini).

The systematics and taxonomy of the tropical Asian jumping spiders of the tribe Baviini is reviewed, with a molecular phylogenetic study (UCE sequence capture, traditional Sanger sequencing) guiding a reclassification of the group's genera. The well-studied members of the group are placed into six genera: Simon, 1877, Caleb & Sankaran, 2019, Simon, 1901, Thorell, 1895, Simon, 1885, and one new genus, Maddison, The identity of is clarified, and Kanesharatnam & Benjamin, 2018 synonymized with it. Strand, 1911 is synonymized with .

Sitticine jumping spiders: phylogeny, classification, and chromosomes (Araneae, Salticidae, Sitticini).

The systematics of sitticine jumping spiders is reviewed, with a focus on the Palearctic and Nearctic regions, in order to revise their generic classification, clarify the species of one region (Canada), and study their chromosomes. A genome-wide molecular phylogeny of 23 sitticine species, using more than 700 loci from the arachnid Ultra-Conserved Element (UCE) probeset, confirms the Neotropical origins of sitticines, whose basal divergence separates the Aillutticina (a group of five Neotropical genera) from the subtribe Sitticina (five genera of Eurasia and the Americas). The phylogeny shows that most Eurasian sitticines form a relatively recent and rapid radiation, which we unite into the genus Simon, 1868, consisting of the subgenera Simon, 1901 (seven described species), (41 described species), and Prószyński, 2017 (one species).

A new lapsiine jumping spider from North America, with a review of Simon's species (Araneae, Salticidae, Spartaeinae).

A new spider genus and species from México and Guatemala, , is described, distinct from other members of the jumping spider tribe Lapsiini (subfamily Spartaeinae) by its four retromarginal cheliceral teeth and the large sclerite cradling the embolus. It is the first living lapsiine known outside of South America. This tribe has received attention recently for new species and genera in Ecuador and Brazil, but Simon's original four species of , described from Venezuela in 1900 and 1901, remain relatively poorly known.

A revision of the concept of Mago O. Pickard-Cambridge, 1882, and proposal of a new genus (Araneae: Salticidae: Amycini).

In this paper we redescribe the type species of Mago O. Pickard-Cambridge, M. intentus O.

Myrmarachnine jumping spiders of the new subtribe Levieina from Papua New Guinea (Araneae, Salticidae, Myrmarachnini).

A previously unreported radiation of myrmarachnine jumping spiders from New Guinea is described, which, although having few known species, is remarkably diverse in body forms. This clade is the new subtribe Levieina, represented by seven new species in three new genera. Within are three new species, , , and , all of which are unusual among the myrmarachnines in appearing as typical salticids, not antlike.

New chrysilline and aelurilline jumping spiders from Pakistan (Araneae, Salticidae).

Ali & Maddison, and Ali & Maddison, are described from Khyber Pakhtunkhwa Province, Pakistan. Noted for the first time is the presence in of a small bump just anterior to the fovea of the carapace, of unknown functional significance, otherwise known in the unrelated L. Koch, 1880 and Pocock, 1897.

Phylogeny with introgression in Habronattus jumping spiders (Araneae: Salticidae).

Background: Habronattus is a diverse clade of jumping spiders with complex courtship displays and repeated evolution of Y chromosomes. A well-resolved species phylogeny would provide an important framework to study these traits, but has not yet been achieved, in part because the few genes available in past studies gave conflicting signals. Such discordant gene trees could be the result of incomplete lineage sorting (ILS) in recently diverged parts of the phylogeny, but there are indications that introgression could be a source of conflict.

Co-occurrence of related asexual, but not sexual, lineages suggests that reproductive interference limits coexistence.

We used randomizations to analyse patterns of co-occurrence of sexual and apomictic (asexual) members of the North American agamic complex (Asteraceae). We expect strong asymmetry in reproductive interactions in : apomicts produce clonal seeds with no need for pollination and are not subject to reproductive interference from co-occurring relatives. However, because they still produce some viable pollen, apomicts can reduce reproductive success of nearby sexual relatives, potentially leading to eventual local exclusion of sexuals.