In female spiders, the second pair of appendages, pedipalps serves as a sensory organ and in males they are modified as secondary reproductive organs. Interestingly, females
The tetragnathid spider genus Orsinome is presently recognized by 17 species, mostly known from Asian tropics, many with singular records and restricted distribution. Although a valid genus,
Patu digua, the smallest known spider (0.37 mm long) on the planet belongs to the family of miniature spiders, Symphytognathidae. The informal group of symphytognathoids
Amblypygi (whip spiders) and Solifugae (camel spiders) [both are not spiders, really!] are the last remaining groups in Chelicerata with foundational hypothesis about their evolutionary