Prochresmoda from the Triassic of Kyrgyzstan is not currently considered part of the group and is considered to be more closely related to Triassophasma and Palaeochresmoda.[7]
Their affinities within the Polyneoptera have long been considered uncertain.[8] Some authors have suggested that they represent a derived group of cockroaches.[9]
Description
Chresmodidae are large enigmatic insects with very long specialized legs, probably adapted for skating on the water surface, similar to extant water skaters. They can reach a size of about 17 centimetres (6.7 in).[10][11] and even 19 centimetres (7.5 in).[12]
These Polyneoptera of uncertain position have been considered aquatic, living on the water surface, probably predaceous on nektonic small animals.[13][14]
They lived during the Cretaceous of Brazil, China, Lebanon, Spain, United Kingdom, as well as in the Jurassic of Germany and China, from ~166.0 to 94.3 Ma.[1]
^ZHANG, XIN-WEN; REN, DONG; PANG, HONG; SHIH, CHUNG-KUN (2008-05-05). "A water-skiing chresmodid from the Middle Jurassic in Daohugou, Inner Mongolia, China (Polyneoptera: Orthopterida)". Zootaxa. 1762 (1): 53. doi:10.11646/zootaxa.1762.1.3. ISSN1175-5334.
^ZHANG, XIN-WEN; REN, DONG; PANG, HONG; SHIH, CHUNG-KUN (2008-02-13). "A new genus and species of Chresmodidae (Insecta: Gryllones) from Upper Jurassic-Lower Cretaceous of Yixian Formation, Inner Mongolia, China". Zootaxa. 1702 (1): 26. doi:10.11646/zootaxa.1702.1.2. ISSN1175-5334.
^Nel, André; Marchal-Papier, Francine; Béthoux, Olivier; Gall, Jean-Claude (January 2004). "A "stick insect-like" from the Triassic of the Vosges (France) ("pre-Tertiary Phasmatodea")". Annales de la Société Entomologique de France. Nouvelle Série (in French). 40 (1): 31–36. doi:10.1080/00379271.2004.10697402. ISSN0037-9271.