Four new species of Utivarachna Kishida, 1940 (Araneae: Trachelidae) from Sumatra.

Four new species of trachelid spiders belonging to the genus Utivarachna Kishida, 1940 are described: U. angsoduo sp. nov., U. balonku sp. nov., U. rimba sp. nov., and U. trisula sp. nov. Part of the EFForTS project, the spider specimens were uncovered in a canopy fogging collection of tree crown arthropods along a land-use gradient from rainforest via jungle rubber (rubber agroforestry) to monocultures of rubber and oil palm in Jambi Province, Sumatra, Indonesia. Three of the proposed new species were found exclusively in rainforest or jungle rubber agroforest (U. angsoduo sp. nov., U. rimba sp. nov., U. trisula sp. nov.), and one of them exclusively in monocultures of rubber trees (U. balonku sp. nov.). We provide photographs and distribution maps for the proposed new species, and discuss their potential ecology based on their sampling locations. We also encountered a fifth species of the genus in all four land-use systems, U. phyllicola Deeleman-Reinhold, 2001, one of two species of the genus previously recorded from Sumatra, and also provide photographs and distribution maps for this species in the research area of the EFForTS project.

From the lowlands to the highlands of Ecuador, a study of the genus Masteria (Araneae, Mygalomorphae, Dipluridae) with description of seven new species.

Dipluridae represent a small Mygalomorphae family of South American origin, the family includes two subfamilies Diplurinae and Masteriinae although the placement of the latter in Dipluridae is still under debate. The family has a predominantly South American distribution although the genus Masteria L. Koch, 1873 presents an interesting distribution with representatives found in Fiji, Micronesia, New Caledonia, New Guinea and Australia. This genus is diverse at the species level in tropical South America and the Caribbean but no species have been described from Ecuador to date. Ongoing field work as part of the BIO-GEEC Projecta consortium established by several Ecuadorian and German institutionshas resulted in the discovery of several new species from both lowlands and highland habitats in Ecuador. Herein we described seven new species of Masteria from Ecuador: M. jatunsacha n. sp. (male); M. machay n. sp. (female); M. chalupas n. sp. (male); M. papallacta n. sp. (male and female); M. pasochoa n. sp. (male and female); M. lasdamas n. sp. (male); and M. otongachi n. sp. (male). The type species of the genus, Masteria hirsuta L. Koch, 1873 from Fiji, is redescribed and re-illustrated, from the original type specimen.