On the boundary of the jumping spider genus Rhyphelia Simon, 1902 (Araneae: Salticidae: Euophryini), with description of ten new species.

In this paper we synonymize Soesilarishius Makhan, 2007 with Rhyphelia Simon, 1902. We give new illustrations of the male holotype of the type species Rhyphelia variegata Simon, 1902 for comparisons, and describe the closely related Rhyphelia brevistylus sp. nov.

On the taxonomy of the jumping spider genus Matinta Ruiz & Maddison, 2019, with a taxonomic revision of the vicana species-group (Araneae: Salticidae: Amycini).

The male of Matinta opiparis (Simon, 1900) is redescribed based on fresh material, and the female is described for the first time. Matinta tatianae sp. nov.

On the Amazonian cricket Phalangopsis Serville, 1831 (Orthoptera: Grylloidea: Phalangopsidae): biology, morphology, and a new species.

Phalangopsis mimbypysara n. sp. is described from specimens collected in natural cavities in the region of Altamira and Vitória do Xingu, state of Pará, Brazil.

 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.

A new huriine genus and notes on morphological characters (Araneae: Salticidae: Salticinae).

Huriini Simon, 1901 currently consists of six genera and 17 species, distributed exclusively in South America. In this work, the huriine genus Guriurius Marta, Bustamante, Ruiz Rodrigues, gen. nov.

Queens remate despite traumatic mating in stingless bees.

Males can control female reproduction using genital plugs to impede access by rivals. In social bees, ants, and wasps, plugging may involve traumatic mating, with females being harmed. In stingless bees, chances are that plugs may promote ovarian activan, and are thought to ensure single mating-a general tendency among the social Hymenoptera.

Revision of Gypogyna Simon, 1900 (Araneae: Salticidae).

Gypogyna Simon, 1900 is revised. Three species are recognized and diagnosed. The type species, Gypogyna forceps Simon, 1900, is redescribed and recorded from several localities in South America.

Taxonomic revision of Marma Simon, 1902 (Araneae: Salticidae: Euophryini).

The Neotropical genus Marma Simon, 1902 is revised. With exception of the holotype of M. femella (Caporiacco, 1955), which was redescribed in previous work, all the other species of the genus were revised based on their types.

New species and records of thiodinines from North and South America (Araneae: Salticidae: Salticinae: Thiodinini).

Five new species of thiodinines are described: Atomosphyrus wandae sp. nov. (♂, from state of Piauí, Brazil); Cyllodania marietae sp.

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.

Seven new species of Amphidraus Simon, 1900 (Araneae: Salticidae: Euophryini).

Seven new species of Amphidraus Simon, 1900 are described from Brazil: A. araripe sp. nov.

Description of a new species of Surazomus (Arachnida: Schizomida), with comments on homology of male flagellum and mating march anchorage in the genus.

Surazomus saturninoae sp. nov. is described from eastern Amazon.

Two new species of Neonella Gertsch, 1936 (Araneae: Salticidae: Euophryini).

Two new species of Neonella Gertsch, 1936 from Brazil are described: N. gyrinus sp. nov.

Systematics of Thiodinini (Araneae: Salticidae: Salticinae), with description of a new genus and twelve new species.

The jumping spider tribe Thiodinini is revised at generic level: diagnoses are proposed for all valid genera, based on the type species of each genus, and in some cases, on new species herein described. The tribe contains seven genera: Thiodina Simon, 1900; Cyllodania Simon, 1902; Hyetussa Simon, 1902; Atomosphyrus Simon, 1902; Arachnomura Mello-Leitão, 1917, Titanattus Peckham & Peckham, 1885 and the new genus Tartamura gen. nov.

On four new species of the jumping spider genus O. Pickard-Cambridge, 1882 from South America (Araneae: Salticidae).

Four new species of Mago O. Pickard-Cambridge, 1882 are described. Mago furcatus sp.

Twenty-seven new species of the goblin spider genus Birabén, 1953 (Araneae: Oonopidae) from Brazil.

Twenty-seven new species of the genus Neoxyphinus are described, all from Brazil, raising the total number of species of the genus to 48. The new species with the respective geographic distribution and known sexes are: N. capiranga sp.

, a new genus of goblin spiders (Araneae: Oonopidae) from the Brazilian Amazon.

The new genus Amazoonops is proposed for a group of species from the Brazilian Amazon that belong to the Varioonops group, which is presently composed by Varioonops Bolzern & Platnick, Ponsoonops Bolzern and Bipoonops Bolzern. In these genera, female lacks the dorsal abdominal scutum, have a reduced abdominal post-epigastric scutum, and the male palp has unfused cymbium and tegulum. The incomplete abdominal epigastric scutum of females and the sternal surface covered with deep pits in both sexes are considered as putative synapomorphies of the new genus.

Three new species and redescription of the type species of Makhan, 2007 (Araneae: Salticidae: Euophryini).

Four syntopic species of Soesilarishius Makhan, 2007 are recorded from the Floresta Estadual do Trombetas, Oriximiná, Pará, Brazil. The first is the type species of the genus, S. amrishi Makhan, 2007, of which we redescribe the male and describe the female for the first time.

Edwardsya, a new genus of jumping spiders from South America (Araneae: Salticidae: Freyina).

Edwardsya gen. nov. is proposed to include the type species Attus simoni Taczanowski, 1871 from lower Amazon River, and E.

Three new species of Kalcerrytus Galiano, 2000 from Brazil (Araneae: Salticidae).

Three new species of Kalcerrytus Galiano, 2000 from the state of Pará in the Brazilian Amazon are described: K. amplexus sp. nov.

Description of eleven new species of the goblin spider genus Neoxyphinus Birabén, 1953 (Araneae, Oonopidae).

The spiders of the genus Neoxyphinus Birabén differ from those of other oonopid genera by the male endites with an api-cal, retrolateral excavation bearing a subapical tooth-like apophysis and, in females, by the ellipsoid genital atrium, with angular lateral margins. In this paper, eleven new species of the genus are described, mainly from northern South America: N. amazonicus Moss & Feitosa, sp.

The new Andean jumping spider genus Urupuyu and its placement within a revised classification of the Amycoida (Araneae: Salticidae).

Urupuyu gen. nov. is described for three new species of small black jumping spiders from the cloud forests of Ecuador: Urupuyu antisana sp.

The jumping spider genus Thiodina Simon, 1900 reinterpreted, and revalidation of Colonus F.O.P-Cambridge, 1901 and Nilakantha Peckham & Peckham, 1901 (Araneae: Salticidae: Amycoida).

In this paper we call attention to the identity of the type species of Thiodina Simon, 1900, T. nicoleti Roewer, 1951. When Simon proposed the genus, he characterized it based on morphological features found in species he described, but not found in the type species he designated, and whose type specimens, apparently, he had not examined.

Description of four new species of Hypaeus Simon and redescription of H. taczanowskii Mello-Leitão (Araneae: Salticidae: Amycinae).

Four new species of Hypaeus Simon are described from the Brazilian Amazon, all based on both sexes: H. tridactylus sp. nov.