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|Title||Predatory behaviour of the social orb-weaver spider, Geratonephila burmanica n. gen., n. sp (Araneae: Nephilidae) with its wasp prey, Cascoscelio incassus n. gen., n. sp (Hymenoptera: Platygastridae) in Early Cretaceous Burmese amber|
|Publication Type||Journal Article|
|Year of Publication||2012|
|Authors||Poinar, GO, Buckley, R|
|Type of Article||Journal Article|
The present work shows predatory behaviour of the social orb-weaver spider, Geratonephila burmanica n. gen., n. sp. (Araneae: Nephilidae) against a parasitic wasp, Cascoscelio incassus n. gen., n. sp. (Hymenoptera: Platygastridae) in Early Cretaceous Burmese amber. An adult male and juvenile of G. burmanica in the same web provide the first fossil evidence of sociality in spiders. The spider is characterised by a pedipalp with a hemispherical tegulum, a subtegulum curved at 180 degrees and an apical spiralled embolas-conductor bent approximately 45 degrees at midpoint. The male wasp is characterised by an ocellar tubercle, 12-segmented antennae with a feeble five-segmented clava, thick sensilla trichodea curvata with rounded ends on the claval antennomeres, a short uncus, a short post-marginal vein and a nebulose radial sector (Rs) vein extending from the uncus to the costal margin of the forewing. This is the first fossil evidence of spider sociality and a fossil spider attacking prey trapped in its web.
|URL||<Go to ISI>://WOS:000308765200006|