Chresmoda
Chresmoda is an extinct genus of insects within the family Chresmodidae.
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Fossil specimen of Chresmoda obscura from Germany, on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
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Genus: | Chresmoda Germar 1839 |
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Description
Chresmoda are large enigmatic insects with very long specialized legs, probably adapted for skating on the water surface similar to pond skaters. They can reach a body length of about 25 millimetres (0.98 in), with a forewing length of about 28 millimetres (1.1 in).[1]
These Polyneoptera of uncertain position have been considered aquatic and living on the water surface, probably predaceous on nektonic small animals.[2][3]
They lived during the Cretaceous of Brazil,[4] China,[5] Lebanon,[3] Spain, United Kingdom, Mongolia and Myanmar, as well as in the Late Jurassic of Germany, from 150.8 to 94.3 Ma from the Tithonian to the Cenomanian ages.[1] While most species are known from compression fossils, Chresmoda chikuni is known from well preserved 3-dimensional specimens in amber.[6]
Species
- Chresmoda aquatica Martinez-Delclos, 1989 La Pedrera de Rubies Formation and Las Hoyas, Spain, Barremian
- Chresmoda chikuni Zhang & Ge in Zhang et al., 2017 Burmese amber, Myanmar, Cenomanian
- Chresmoda libanica Nel et al., 2004 Sannine Formation, Lebanon, Cenomanian
- Chresmoda multinervis Zhang et al., 2009 Dabeigou Formation, China, Early Cretaceous
- Chresmoda mongolica Ponomarenko, 1986 Gurvan-Eren Formation, Mongolia, Aptian
- Chresmoda neotropica Engel & Heads, 2008 Crato Formation, Brazil, Aptian
- Chresmoda obscura Germar, 1839 Solnhofen Limestone, Germany, Tithonian
- Chresmoda orientalis Esaki, 1949 Yixian Formation, China, Aptian
- Chresmoda oweni Westwood, 1854 Purbeck Group, United Kingdom, Berriasian
- Chresmoda shihi Zhang et al., 2009 Dabeigou Formation, China, Early Cretaceous
References
- The Paleobiology Database
- A. G. Ponomarenko Fossil insects from the Tithonian «Solnhofener Plattenkalke» in the Museum of Natural History, Vienna
- Nel, Andre; Azar, Dany; Martinez-Delclos, Xavier; Makhoul, Edouard (2004-03-25). "A new Upper Cretaceous species of Chresmoda from Lebanon - a latest representative of Chresmodidae (Insecta: Polyneoptera inc. sed.): first record of homeotic mutations in the fossil record of insects". European Journal of Entomology. 101 (1): 145–151. doi:10.14411/eje.2004.019.
- Delclòs, Xavier; Nel, André; Azar, Dany; Bechly, Günter; Dunlop, Jason A.; Engel, Michael S.; Heads, Sam W. (2008-03-01). "The enigmatic Mesozoic insect taxon Chresmodidae (Polyneoptera): New palaeobiological and phylogenetic data, with the description of a new species from the Lower Cretaceous of Brazil". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 247 (3): 353–381. doi:10.1127/0077-7749/2008/0247-0353.
- Zhang, Xinwen; Ren, Dong; Pang, Hong; Shih, Chungkun (2010-01-27). "Late Mesozoic Chresmodids with Forewing from Inner Mongolia, China (Polyneoptera: Archaeorthoptera)". Acta Geologica Sinica - English Edition. 84 (1): 38–46. doi:10.1111/j.1755-6724.2010.00168.x.
- W. W. Zhang and S. Q. Ge. 2017. A new species of Chresmodidae from Mid-Cretaceous amber discovered in Myanmar. Zoological Systematics 42:243-247