A new genus of Prodidominae cave spider from a Paleoburrow and Ferruginous caves in Brazil (Araneae: Prodidomidae)

A new monotypic genus of Prodidominae, Paleotoca gen. n., is proposed to include one cave species collected in a paleoburrow and ferruginous caves from Quadrilátero Ferrífero, Minas Gerais, Brazil: Paleotoca diminas sp. n. (♂♀). The new genus is closely related to other Neotropical Prodidominae by sharing the classic claw tuft clasper. Paleotoca gen. n. is diagnosed by the absence of a dorsal abdominal scutum, a ventral parallel rows of strong spines on the tibia and metatarsus I–II, a lack of a conductor, a discrete median apophysis on the bulb and a bifid retrolateral tibial apophysis in the male palp, a posterior extension that is beak-shaped, and folds of a copulatory duct ventrally visible in the female epigyne. Like other Prodidominae species from caves, P. diminas sp. n. is a troglobitic spider with morphological characteristics that indicate specialization to live in subterranean environments, including reduction in cuticular pigments, eye loss, heavy spination and trichobothria.

A new species of Strotarchus Simon, 1888 from Honduras (Araneae, Cheiracanthiidae)

A new species, Strotarchus chamevazquezi sp. nov., is described based on both sexes from Department Francisco Morazán, Honduras. A detailed description, diagnosis, photographs, and distribution map of the new species are given. This is the first species of this genus recorded from Honduras.

An update of morphological and distributional data of the genus Patrera Simon (Araneae: Anyphaenidae: Anyphaeninae) with the description of twenty-five new species from Colombia.

The knowledge on the diversity of the genus Patrera Simon in Colombia is widely expanded. P. auricoma (L. Koch, 1866) and P. armata (Chickering, 1940) are redescribed and their females are described for the first time and recorded from Cundinamarca and Meta departments, respectively. Aysha strandi (Caporiacco, 1947) is synonymized with P. armata. Three species groups in the genus Patrera are proposed to include the bulk of its species (fulvastra, florezi, and philipi). These groups are diagnosed based on sexual characters. Twenty-five new species are herein described, illustrated and mapped: P. anchicaya n. sp. (♂♀); P. barbacoas n. sp. (♂); P. borjai n. sp. (♂♀); P. danielae n. sp. (♂♀); P. dimar n. sp. (♂♀); P. perafani n. sp. (♂♀); P. platnicki n. sp. (♂); P. quillacinga n. sp. (♂♀), and P. ramirezi n. sp. (♂♀) into the fulvastra species group. P. bonaldoi n. sp. (♂♀); P. boteroi n. sp. (♂); P. carvalhoi n. sp. (♂♀); P. florezi n. sp. (♂♀); P. perijaensis n. sp. (♀); P. quimbaya n. sp. (♂♀); P. sampedroi n. sp. (♂); P. yukpa n. sp. (♂♀), and P. wiwa n. sp. (♂♀) in florezi species group. P. sutu n. sp. (♂); P. chucurui n. sp. (♂♀); P. dawkinsi n. sp. (♂); P. dentata n. sp. (♂); P. dracula n. sp. (♂); P. kuryi n. sp. (♂♀), and P. longitibialis n. sp. (♂) in philipi species group. We also briefly discuss some aspects of the species groups' genital morphology, based on a comparison with the type, P. fulvastra Simon. Additionally, distribution maps for all Colombian species including new records for P. armata (Chickering, 1940), P. auricoma (L. Koch, 1866) and P. suni Dupérré Tapia, 2016 from Cundinamarca, Meta and Nariño departments are also herein included.

A taxonomic revision of the spider genus Meriola Banks (Araneae: Trachelidae).

The genus Meriola Banks currently includes 24 known species of spiders distributed across America, especially in southern South America. They have a nearly straight and narrower posterior eye row compared to other American genera of Trachelidae, and elongated and sharply tipped ventral leg cuspules. The study of specimens of Meriola available in collections revealed two undescribed species, M. avalosi sp. nov. and M. peras sp. nov., and the previously unknown females of M. balcarce Platnick Ewing and M. quilicura Platnick Ewing, all of which are described here. The female of M. lineolata (Mello-Leitão) comb. nov., transferred from Cetonana Strand, is described for the first time. Two further new combinations are proposed here: M. macrocephala (Nicolet) comb. nov., transferred from Trachelopachys Simon, and M. setosa (Simon) comb. nov., transferred from Cetonana; these two species are also considered senior synonyms of M. barrosi (Mello-Leitão) and M. hyltonae (Mello-Leitão), respectively. Additionally, a new sex matching of M. ramirezi Platnick Ewing and M. davidi Grismado is proposed, with a redescription of the female of M. ramirezi provided. New geographical records are provided for all of the species, with images and a revised diagnosis for the genus and the previously known species.

The genus Syspira Simon, 1895 (Araneae: Miturgidae) from Hispaniola, with the description of four new species.

The species of Syspira Simon from Hispaniola are revised and detailed documentation is provided for all known species from this island. Four new species (Syspira alayoni sp. n., S.  armasi sp. n., S.  barbacoa sp. n., and S.  bryantae sp. n.), and the unknown male of Syspira agujas Brescovit, Sánchez-Ruiz Bonaldo are described. New distribution records were found for three known species (S. agujas, S. cimitarra Brescovit, Sánchez-Ruiz Bonaldo and S.  medialuna Brescovit, Sánchez-Ruiz Bonaldo). The Hispaniolan endemic species Teminius monticola (Bryant, 1948) is transferred to Syspira based on the revision of its holotype. A key for Hispaniola Syspira species is provided. These species can be separated into two distinct groups based on features of the male palpal morphology and female genitalia: the cimitarra group including S. cimitarra, S. jimmyi Brescovit, Sánchez-Ruiz Bonaldo, S. alayoni and S. barbacoa sp. n., and the agujas group including S. agujas, S. medialuna, S. monticola comb. n., S. armasi sp. n. and S. bryantae sp. n.

The genus Syspira Simon, 1895 (Araneae: Miturgidae) from Hispaniola, with the description of four new species

The species of Syspira Simon from Hispaniola are revised and detailed documentation is provided for all known species from this island. Four new species (Syspira alayoni sp. n., S. armasi sp. n., S. barbacoa sp. n., and S. bryantae sp. n.), and the unknown male of Syspira agujas Brescovit, Sánchez-Ruiz & Bonaldo are described. New distribution records were found for three known species (S. agujas, S. cimitarra Brescovit, Sánchez-Ruiz & Bonaldo and S. medialuna Brescovit, Sánchez-Ruiz & Bonaldo). The Hispaniolan endemic species Teminius monticola (Bryant, 1948) is transferred to Syspira based on the revision of its holotype. A key for Hispaniola Syspira species is provided. These species can be separated into two distinct groups based on features of the male palpal morphology and female genitalia: the cimitarra group including S. cimitarra, S. jimmyi Brescovit, Sánchez-Ruiz & Bonaldo, S. alayoni and S. barbacoa sp. n., and the agujas group including S. agujas, S. medialuna, S. monticola comb. n., S. armasi sp. n. and S. bryantae sp. n.

Three new species of Thaloe Brescovit (Araneae: Anyphaenidae: Anyphaeninae), with descriptions of the first known females of the genus.

Three new species of the genus Thaloe are described from Antillean region: Thaloe maricao n. sp., from Maricao, Puerto Rico and Virgin Island, Thaloe leboulet n. sp., from Le Boulet and Mariani, Haiti and Thaloe ebano n. sp., from the Dominican Republic. Females of species of this genus are described for the first time.

Three new species of Thaloe Brescovit (Araneae: Anyphaenidae: Anyphaeninae), with descriptions of the first known females of the genus

Three new species of the genus Thaloe are described from Antillean region: Thaloe maricao n. sp., from Maricao, Puerto Rico and Virgin Island, Thaloe leboulet n. sp., from Le Boulet and Mariani, Haiti and Thaloe ebano n. sp., from the Dominican Republic. Females of species of this genus are described for the first time.

Five new species of the Ghost Spider genus Anyphaenoides Berland from Colombia (Araneae: Anyphaenidae: Anyphaeninae).

Five new species of the ghost spider genus Anyphaenoides Berland from Colombia are described and illustrated: A. sierraensis sp. nov. (based on male and female) from Magdalena department, A. caribensis sp. nov. (male and female) from Atlántico department, A. foreroi sp. nov. (male) from Vaupes department, A. hilli sp. nov. (male) from Putumayo department and A. enigmaticus sp. nov. (male and female) from Santander department.

Five new species and novel descriptions of opposed sexes of four species of the spider genus Attacobius (Araneae: Corinnidae).

Five new Brazilian species of the spider genus Attacobius Mello-Leitão, 1925 are described: A. demiguise n. sp. (based on male and female) and A. carimbo n. sp. (male), both from State of Pará; A. thalitae n. sp. (male) from the State of Minas Gerais; A. lauricae n. sp. (male) from State of Tocantins; and A. tremembe n. sp. (female) from State of Piauí. The males of A. luederwaldti (Mello-Leitão, 1923) and A. verhaaghi Bonaldo Brescovit, 1998, and the females of A. uiriri Bonaldo Brescovit, 2005 and A. blakei Bonaldo Brescovit, 2005, are described for the first time. Additionally, new records of A. attarum (Roewer, 1935), A. carranca Bonaldo Brescovit, 2005, A. kitae Bonaldo Brescovit, 2005 and A. tucurui Bonaldo Brescovit, 2005 are given.

Revisiting the spider genus Eutichurus Simon, 1897 (Araneae, Eutichuridae): new species and complementary descriptions.

Six new species of the genus Eutichurus Simon, 1897 are described: E. murgai new species (based on male and female) and E. paredesi new species (male) from Peru; E. cumbia new species (female) and E. tequendama new species (male) from Colombia; E. yungas new species (male and female) from Bolivia, and E. nancyae new species (male and female) from Brazil. The males of E. marquesae Bonaldo, 1994, E. madre Bonaldo, 1994 and E. zarate Bonaldo, 1994 are described for the first time. Eutichurus brescoviti Bonaldo, 1994, described on males, is synonymized with E. tropicus (L. Koch, 1866), previously known only from females. New records for E. ibiuna Bonaldo, 1994, E. ravidus Simon, 1897, E. putus O. Pickard-Cambridge, 1898, E. silvae Bonaldo, 1994, E. lizeri Mello-Leitão, 1938, E. saylapampa Bonaldo, 1994, E. tropicus and E. manu Bonaldo, 1994 are presented. A key to all species of Eutichurus is provided, variation in the epigynal morphology of E. ibiuna is recorded and the fine morphology of E. marquesae is documented.

There and back again: More on the taxonomy of the crab spiders genus Epicadus (Thomisidae: Stephanopinae).

The Neotropical crab spider genera Tobias Simon, 1895 and Epicadus Simon, 1895 comprise species with remarkable somatic morphology and confounding taxonomic history. The results of our recent cladistic analysis corroborate and extend preceding taxonomic assumptions in showing that Tobias is a junior synonym of Epicadus. In the present paper the six species recently transferred from Tobias to Epicadus are redescribed. Two new species are described based on both males and females: Epicadus dimidiaster sp. nov. and Epicadus tigrinus sp. nov.; the male of Epicadus granulatus Banks, 1909 is described for the first time. The diagnosis of the genus is revised, an identification key is provided, and information on geographical distribution is updated. Epicadus now comprises eleven species.

Five new species of the Ghost Spider genus Anyphaenoides Berland from Colombia (Araneae: Anyphaenidae: Anyphaeninae)

Five new species of the ghost spider genus Anyphaenoides Berland from Colombia are described and illustrated: A. sierraensis sp. nov. (based on male and female) from Magdalena department, A. caribensis sp. nov. (male and female) from Atlantico department, A. foreroi sp. nov. (male) from Vaupes department, A. hilli sp. nov. (male) from Putumayo department and A. enigmaticus sp. nov. (male and female) from Santander department.

A new species of the genus Parachemmis Chickering, 1937 from Colombia (Araneae, Corinnidae, Corinninae).

The spider genus Parachemmis Chickering, 1937 (Araneae: Corinnidae: Corinninae) is reported from Colombia for the first time. Parachemmis julioblancoisp. n. Martinez-G & Villarreal is described and illustrated from the Sierra Nevada de Santa Marta, Magdalena department. The exclusive morphology of the short and apically truncated retrolateral tibial apophysis and club-like tegular laminar process of the male palp indicates that the specimens described herein belong to a new species of Parachemmis. A map of the distribution of species in the genus is included.