''Chresmoda'' is an extinct genus of insects within the family Chresmodidae.

Description

''Chresmoda'' are large enigmatic insects with very long specialized legs, probably adapted for skating on the water surface similar to

pond skaters The Gerridae are a family of insects in the order Hemiptera, commonly known as water striders, water skeeters, water scooters, water bugs, pond skaters, water skippers, or water skimmers. Consistent with the classification of the Gerridae as tr ...

. They can reach a body length of about , with a forewing length of about . Some lagre specimens could reached a size of about . These Polyneoptera of uncertain position have been considered aquatic and living on the water surface, probably predaceous on nektonic small animals. They lived during the

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of ...

of Brazil, China, Lebanon, Spain, United Kingdom, Mongolia and Myanmar, as well as in the

Late Jurassic The Late Jurassic is the third epoch of the Jurassic Period, and it spans the geologic time from 163.5 ± 1.0 to 145.0 ± 0.8 million years ago (Ma), which is preserved in Upper Jurassic strata.Owen 1987. In European lithostratigraphy, the ...

of Germany, from 150.8 to 94.3 Ma from the

Tithonian In the geological timescale, the Tithonian is the latest age of the Late Jurassic Epoch and the uppermost stage of the Upper Jurassic Series. It spans the time between 152.1 ± 4 Ma and 145.0 ± 4 Ma (million years ago). It is preceded by t ...

to the Cenomanian ages. While most species are known from

compression fossils A compression fossil is a fossil preserved in sedimentary rock that has undergone physical compression. While it is uncommon to find animals preserved as good compression fossils, it is very common to find plants preserved this way. The reason fo ...

, ''

Chresmoda chikuni ''Chresmoda'' is an extinct genus of insects within the family Chresmodidae. Description ''Chresmoda'' are large enigmatic insects with very long specialized legs, probably adapted for skating on the water surface similar to pond skaters. They ...

'' is known from well preserved 3-dimensional specimens in

amber Amber is fossilized tree resin that has been appreciated for its color and natural beauty since Neolithic times. Much valued from antiquity to the present as a gemstone, amber is made into a variety of decorative objects."Amber" (2004). In M ...

Species

*''Chresmoda aquatica'' Martinez-Delclos, 1989

La Pedrera de Rubies Formation LA most frequently refers to Los Angeles, the second largest city in the United States. La, LA, or L.A. may also refer to: Arts and entertainment Music * La (musical note), or A, the sixth note * "L.A.", a song by Elliott Smith on ''Figure ...

and Las Hoyas, Spain,

Barremian The Barremian is an age in the geologic timescale (or a chronostratigraphic stage) between 129.4 ± 1.5 Ma ( million years ago) and 121.4 ± 1.0 Ma). It is a subdivision of the Early Cretaceous Epoch (or Lower Cretaceous Series). It is pre ...

*''Chresmoda chikuni'' Zhang & Ge ''in'' Zhang ''et al.'', 2017

Burmese amber Burmese amber, also known as Burmite or Kachin amber, is amber from the Hukawng Valley in northern Myanmar. The amber is dated to around 100 million years ago, during the latest Albian to earliest Cenomanian ages of the mid-Cretaceous period. ...

, Myanmar, Cenomanian *''Chresmoda libanica'' Nel ''et al.'', 2004 Sannine Formation, Lebanon, Cenomanian *''Chresmoda multinervis'' Zhang ''et al.'', 2009

Dabeigou Formation The Dabeigou Formation is a palaeontological formation located in Hebei, China.Gurvan-Eren Formation, Mongolia,

Aptian The Aptian is an age in the geologic timescale or a stage in the stratigraphic column. It is a subdivision of the Early or Lower Cretaceous Epoch or Series and encompasses the time from 121.4 ± 1.0 Ma to 113.0 ± 1.0 Ma (million years ag ...

*''Chresmoda neotropica'' Engel & Heads, 2008 Crato Formation, Brazil, Aptian *''Chresmoda obscura'' Germar, 1839 Solnhofen Limestone, Germany, Tithonian: can reach a size of about . These Polyneoptera of uncertain position have been considered aquatic and terrestrial bug or phasmids. They should instead be anomalous paraplecopterids living on the water surface, probably predaceous on nektonic small animals.A. G. Ponomarenko
Fossil insects from the Tithonian «Solnhofener Plattenkalke» in the Museum of Natural History, Vienna
/ref> They lived during the

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...

of Germany, from 150.8 to 145.5 Ma. *''Chresmoda orientalis'' Esaki, 1949

Yixian Formation The Yixian Formation (; formerly transcribed as Yihsien Formation) is a geological formation in Jinzhou, Liaoning, People's Republic of China, that spans the late Barremian and early Aptian stages of the Early Cretaceous. It is known for its ...

, China, Aptian *''Chresmoda oweni'' Westwood, 1854 Purbeck Group, United Kingdom, Berriasian *''Chresmoda shihi'' Zhang ''et al.'', 2009 Dabeigou Formation, China, Early Cretaceous

References

External links

Encyclopedia of LifeLacewing Digital Library
{{Taxonbar, from=Q18347473, from2=Q10747731 Mesozoic insects of Europe Prehistoric insect genera Polyneoptera