Ultrastructure ofDeinopisEgg Sac (Araneae: Deinopidae)

A revision of the endemic South African sac spider genus Lessertina Lawrence, 1942 (Araneae: Eutichuridae).

The endemic South African sac spider genus Lessertina Lawrence, 1942, previously known only from the type species (L. mutica Lawrence, 1942), is revised. Both sexes of L. mutica are redescribed and the species is recorded from the Eastern Cape, KwaZulu-Natal and Limpopo Provinces. A new species, L. capensis sp. nov., is described from the Eastern and Western Cape Provinces.

Five new species of the Afrotropical dark sac spider genus Messapus Simon, 1898 (Araneae: Corinnidae).

The Afrotropical dark sac spider genus Messapus Simon, 1898 (Corinnidae: Corinninae) currently only comprises two described species, the type species M. martini Simon, 1898 and M. natalis (Pocock, 1898), which have both recently been redescribed. The leg and setal morphology of Messapus is studied using scanning electron microscopy for the first time, for M. martini and M. tigris sp. n., and ad...

Details of the ultrastructure of Rickettsia prowazekii grown in the chick yolk sac.

SAC and neighbourhood SAC

This paper introduces a new kind of local consistency based on the general idea of singleton arc consistency (SAC). This is a reduced form of SAC that only considers neighbourhoods of a variable with a singleton domain; hence, the name “neighbourhood SAC” (NSAC). Like AC and SAC, NSAC has a unique fixpoint, so that NSAC algorithms will produce the same result when applied to a problem regardles...

Castianeira furva sp. nov. (Araneae, Corinnidae, Castianeirinae), a new polymorphic ground sac spider from the southern Western Ghats of India.

The ground-dwelling, ant-mimicking corinnid spider genus Castianeira, with Castianeira rubicunda as type species, was erected by Keyserling (1879). Members of the genus are closely related to the Afrotropical genus Cambalida Simon, 1910 (Haddad 2012a) and are distributed mainly in tropical and temperate regions of the world except for Australia and nearby islands (World Spider Catalog 2015). Th...