| Dolichoderus pinguis | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Dolichoderinae |
| Genus: | Dolichoderus |
| Species: | †D. pinguis |
| Binomial name | |
| †Dolichoderus pinguis Dlussky, Rasnitsyn & Perfilieva, 2015 | |
Dolichoderus pinguis is an extinct species of formicid in the ant subfamily Dolichoderinae known from a fossil found in Asia. The species is one of a number in the genus described from fossils.
Dolichoderus pinguis is known from a single ant found in Russia. [1] The specimen was described from a compression fossil preserved in diatomite deposits of the Bol’shaya Svetlovodnaya site. Located in the Pozharsky District, on the Pacific Coast of Russia, the fossil bearing rocks preserve possibly Priabonian plants and animals which lived in a small lake near a volcano. The site has been attributed to either the Maksimovka or Salibez Formations and compared to the Bembridge Marls and Florissant Formation, both of which are Priabonian in age. [1]
At the time of description, the holotype specimen, number PIN 3429/1134 was preserved in the A. A. Borissiak Paleontological Institute collections, part of the Russian Academy of Sciences. The fossil was first described by the trio of paleomyrmecologists Gennady Dlussky, Alexandr Rasnitsyn and Ksenia Perfilieva. In the type description, Dlussky, Rasnitsyn and Perfilieva named the species D. pinguis, with the specific epithet derived from the Latin "pinguis", which means fat. [1]
D. pinguis is one of over forty five species in Dolichoderus that have been described from fossils, and is the only one to have been described from a male, all others being described from females. [1]
D. pinguis was described from a lone 6.3 mm (0.25 in) long male preserved as a partial profile impression, missing portions of the legs, wings, and antennae. The head is shorter than it is long with rounded sides in the areas of the compound eyes. The eyes are big, being about half the length of the head. On the mesosoma, the scutum is larger than the scutellum which is only about half as long. The propodium bulges into a humped upper surface and the connecting area for the petiole is concave. A short neck connects the propodium to a node-like expanded petiole. While the D. pinguis male is the only fossil male described in the genus, the petiole does show similarity to Dolichoderus kutscheri described from Bitterfeld amber in Europe. [1]
Ypresiomyrma is an extinct genus of ants in the subfamily Myrmeciinae that was described in 2006. There are four species described; one species is from the Isle of Fur in Denmark, two are from the McAbee Fossil Beds in British Columbia, Canada, and the fourth from the Bol’shaya Svetlovodnaya fossil site in Russia. The queens of this genus are large, the mandibles are elongated and the eyes are well developed; a stinger is also present. The behaviour of these ants would have been similar to that of extant Myrmeciinae ants, such as solitary foraging for arthropod prey and never leaving pheromone trails. The alates were poor flyers due to their size, and birds and animals most likely preyed on these ants. Ypresiomyrma is not assigned to any tribe, and is instead generally regarded as incertae sedis within Myrmeciinae. However, some authors believe Ypresiomyrma should be assigned as incertae sedis within Formicidae.
Emplastus is an extinct morphogenus of ants in the subfamily Dolichoderinae, known from fossils found in Asia and Europe. The genus contains twelve species described from sites in England, Eastern Europe and Far Eastern Russia.
Casaleia is an extinct genus of ants in the formicid subfamily Amblyoponinae described by Pagliano & Scaramozzino in 1990 from fossils found in Europe. The genus contains four species dating from the Eocene to Miocene, Casaleia eocenica, Casaleia inversa, Casaleia longiventris, Casaleia orientalis.
Pachycondyla eocenica is an extinct species of ant in the formicid subfamily Ponerinae described from fossils found in Europe. P. eocenica is one of six Lutetian Pachycondyla species.
Pachycondyla? messeliana is an extinct species of ants in the formicid subfamily Ponerinae described by from a fossil found in Europe. P.? messeliana is one of six Lutetian Pachycondyla species.
Pachycondyla parvula is an extinct species of ant in the formicid subfamily Ponerinae described by from a fossil found in Europe. P. parvula is one of six Lutetian Pachycondyla species.
Pachycondyla petiolosa is an extinct species of ant in the formicid subfamily Ponerinae described by from a fossil found in Europe. P. parvula is one of six Lutetian Pachycondyla species.
Pachycondyla petrosa is an extinct species of ant in the formicid subfamily Ponerinae described from a fossil found in Europe. P. petrosa is one of six Lutetian Pachycondyla species.
Paraneuretus is an extinct genus of formicid in the ant subfamily Aneuretinae known from fossils found in Asia and Europe. The genus contains three middle to late Eocene age species, Paraneuretus dubovikoffi, Paraneuretus longicornis, and Paraneuretus tornquisti.
Liometopum incognitum is an extinct species of formicid in the ant subfamily Dolichoderinae known from fossils found in eastern Asia.
Formica biamoensis is an extinct species of formicid in the ant subfamily Formicinae known from fossils found in eastern Asia.
Formica paleosibirica is an extinct species of formicid in the ant subfamily Formicinae known from fossils found in eastern Asia.
Gesomyrmex macrops is an extinct species of formicid in the ant subfamily Formicinae known from a fossil found in eastern Asia.
Gesomyrmex magnus is an extinct species of formicid in the ant subfamily Formicinae known from a fossil found in eastern Asia.
Gesomyrmex incertus is an extinct species of formicid in the ant subfamily Formicinae known from a fossil found in eastern Asia.
Pachycondyla oligocenica is an extinct species of formicid in the ant subfamily Ponerinae known from a fossil found in eastern Asia.
Pachycondyla aberrans is an extinct species of formicid in the ant subfamily Ponerinae known from a single fossil found in Russia.
Proceratium petrosum is an extinct species of formicid in the ant subfamily Proceratiinae known from a fossil found in eastern Asia.
Proceratium eocenicum is an extinct species of formicid in the ant subfamily Proceratiinae known from fossils found in the Baltic region.
Agastomyrma is an extinct genus of formicid in the ant subfamily Myrmicinae known from the fossil species Agastomyrma laticeps found in eastern Asia.