According to Platnick (2011), the order Araneae possesses 110 families, 3,849 genera, and 42,473 species. It is divided into two suborders: Mesothelae, consisting of only one family (Liphistiidae), and Opisthothelae. The latter suborder is divided into two infra-orders: Mygalomorphae, consisting of spiders with paraxial chelicerae, and Araneomorphae, consisting of spiders with diaxial chelicera...

A new record of Loxosceles rufescens (Dufour, 1820) (Araneae, Sicariidae) from Eastern India is discussed herein. This paper extends the distribution L. rufencens Western to India. It was sampled wild habitat area inside campus Berhampur University, Ganjam, Odisha,

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 proce...

Calymmochilus dispar Bouček & Andriescu (Hymenoptera, Eupelmidae) and Gelis apterus (Pontoppidan) (Hymenoptera, Ichneumonidae) are newly recorded as parasitoids of the ant-eating spider Zodarion styliferum (Simon) (Araneae, Zodariidae). The larvae of both parasitoid species fed on juvenile spiders. The final instar larva and pupa of Calymmochilus dispar and the male of Gelis apterus are describ...

A new fossil site near Gilboa, New York, is one of only three where fossils of terrestrial arthropods of Devonian age have been found. The new Gilboan fauna is younger than the other two but richer in taxa. Fragmentary remains and nearly whole specimens assigned to Eurypterida, Arachnida (Trigonotarbida, Araneae, Amblypygi, and Acari), Chilopoda [Craterostigmatomorpha(?) and Scuterigeromorpha(?...

Here for the first time the presence of the trapdoor spider genus Conothele Thorell, 1878 (Araneae: Ctenizidae) is reported from mainland China and Laos. Four Conothele species collected from the regions are described as new to science, based on the female genital morphology: Conothele baiyunensis Xu, Xu & Liu, sp. n. (Guangdong Province), Conothele daxinensis Xu, Xu & Li, sp. n. (Guangxi Provi...

Vesubia jugorum (Simon, 1881) (Araneae: Lycosidae) is a large-sized wolf spider that occurs in alpine rocky areas above 2,000 m altitude. The species is stenoendemic, with a limited number of populations documented in the literature from the Maritime Alps (Italy, France). Due to the climate change, the current observed extent of occurrence (EEO 4,412 km ) and the area of occupancy (AOO 835 km )...

An organ of stridulation is described from Macrothele gigas Shimojana et Haupt, 1998 (Araneae, Hexathelidae). One part is located on the retrolateral side of the pedipalpal trochanter and its counterpart is a specialized structure on the anterolateral side of the first leg's trochanter. Stridulation facilities occur in both sexes. This descripton emphazises differences between large and smaller...

Morphological evidence for resolving relationships among arachnid orders was surveyed and assembled in a matrix comprising 59 euchelicerate genera (41 extant, 18 fossil) and 202 binary and unordered multistate characters. Parsimony analysis of extant genera recovered a monophyletic Arachnida with the topology (Palpigradi (Acaromorpha (Tetrapulmonata (Haplocnemata, Stomothecata nom. nov. )))), w...

Die wenig bekannte Spinnenart Harpactea cecconii (Araneae: Dysderidae) wird anhand von Material wiederbeschrieben, welches auf der Insel Zypern gesammelt wurde. Fotografien weiblichen Kopulationsorgane werden zum ersten Mal präsentiert. Zusätzlich mithilfe SEM-Fotografien die Feinstrukturen des spiniformen Embolus, einem Teil männlichen Kopulationsorgans, gezeigt. Es Möglichkeit erörtert, dass ...