| Sagrinae Temporal range: | |
|---|---|
 | |
| Sagra buqueti | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Chrysomelidae |
| Subfamily: | Sagrinae Leach, 1815 |
| Tribes [1] | |
The Sagrinae are a subfamily of the leaf beetles, or Chrysomelidae.
Beetles of this subfamily are also known as "frog-legged beetles" or "kangaroo beetles". They are very distinctive due to their metafemora, or third pair of legs, which are distinctly larger than other femora and generally sport some type of ridge or tooth on the ventral side. It is theorized[ by whom? ] that the evolutionary function of the large metafemora is to hold the beetle on vegetation for feeding.
These beetles grow to be 1-2 inches in length, and display sexual dimorphism, with the males of the subfamilies being almost twice the size of the females. Males also have significantly larger metafemora than females.
Other identifying features include deep sutural stria, a prognathous head without a median sulcus and with cruciform grooves, a narrow pronotum, and commonly deeply indented eyes. They also have functional wings that aren't used often.
Most beetles of the subfamily display bright colors. [2]
This subfamily is found in Asia and has been observed in Malaysia, Java, Sumatra, Borneo, and the Philippines. It prefers dense tropical jungles for its habitat. [2] There is fossil evidence that suggests these beetles lived in North America and Europe millions of years ago. [3]
There is not much known about reproduction and development in this subfamily, however species in the subfamily often sport large cocoons in the post-larval stage which are commonly found on vining plants.
The cocoons represent a phylogenetic relationship with a type of bacteria called Enterobacteriaceae because the bacteria play a role in the construction of the cocoons. This bacterium also functions as an intracellular symbiont with this subfamily of beetle, and lives in four large blind sacs at the larval foregut. The bacteria provide much needed nutrients throughout the beetle's life cycle. [4]
The sap beetles, also known as Nitidulidae, are a family of beetles.
The Cupedidae are a small family of beetles, notable for the square pattern of "windows" on their elytra, which give the family their common name of reticulated beetles.
The insects of the beetle family Chrysomelidae are commonly known as leaf beetles, and include over 37,000 species in more than 2,500 genera, making up one of the largest and most commonly encountered of all beetle families. Numerous subfamilies are recognized, but the precise taxonomy and systematics are likely to change with ongoing research.
The bean weevils or seed beetles are a subfamily (Bruchinae) of beetles, now placed in the family Chrysomelidae, though they have historically been treated as a separate family. They are granivores, and typically infest various kinds of seeds or beans, living most of their lives inside a single seed. The subfamily includes about 1,650 species and are found worldwide.
Chaeteessidae is a family of praying mantises. It contains a single extant genus, Chaeteessa, native to South America which is thought to be the most primitive and earliest diverging lineage of living mantises. Fossil genera are known from the Paleogene of Eurasia and North America.
Belidae is a family of weevils, called belids or primitive weevils because they have straight antennae, unlike the "true weevils" or Curculionidae which have geniculate (elbowed) antennae. They are sometimes known as "cycad weevils", but this properly refers to a few species from the genera Parallocorynus and Rhopalotria.
Nemonychidae is a small family of weevils, placed within the primitive weevil group because they have straight rather than geniculate (elbowed) antennae. They are often called pine flower weevils. As in the Anthribidae, the labrum appears as a separate segment to the clypeus, and the maxillary palps are long and projecting. Nemonychidae have all ventrites free, while Anthribidae have ventrites 1-4 connate or partially fused. Nemonychidae lack lateral carinae on the pronotum, while these are usually present, though may be short, in Anthribidae.
Cupes is a genus of beetles in the family Cupedidae. The Cupedidae are typical “reticulate” or “net-winged” beetles with incompletely sclerotized elytra that produce the characteristic reticulate appearance.
Chelonariidae or turtle beetles is a family of beetles in the superfamily Byrrhoidea. It was described by Blanchard in 1845. There are 3 genera with around 300 described species. Little is known of their ecology, though it seems they are associated with the roots of orchids and the nests of ants and termites. Their exoskeletons are heavily sclerotised and their limbs can be effectively retracted into their bodies due to the presence of socket-like cavities. Adult specimens have seed-shaped bodies that are typically colored brown or black with lighter patches.
Taphioporus is an extinct genus of leaf beetles in the subfamily Eumolpinae. It is known from Baltic and Rovno amber from the upper Eocene.
Eumolpini is a tribe of leaf beetles in the subfamily Eumolpinae. It is the largest tribe in the subfamily, with approximately 170 genera found worldwide. Members of the tribe almost always have a longitudinal median groove on the pygidium, which possibly helps to keep the elytra locked at rest. They also generally have a subglabrous body, as well as appendiculate pretarsal claws.
2019 in paleoentomology is a list of new fossil insect taxa that were described during the year 2019, as well as other significant discoveries and events related to paleoentomology that were scheduled to occur during the year.
Euryopini is a tribe of leaf beetles in the subfamily Eumolpinae.
Bromiini is a tribe of leaf beetles in the subfamily Eumolpinae. The tribe contains approximately 120 genera, which are found worldwide. They are generally thought to be an artificial group, often with a subcylindrical prothorax without lateral ridges and covered with setae or scales.
2015 in paleoentomology is a list of new fossil insect taxa that were described during the year 2016, as well as other significant discoveries and events related to paleoentomology that were scheduled to occur during the year.
2015 in paleoentomology is a list of new fossil insect taxa that were described during the year 2015, as well as other significant discoveries and events related to paleoentomology that were scheduled to occur during the year.
This paleoentomology list records new fossil insect taxa that were to be described during the year 2021, as well as notes other significant paleoentomology discoveries and events which occurred during that year.
This paleoentomology list records new fossil insect taxa that are to be described during the year 2022, as well as notes other significant paleoentomology discoveries and events which occurred during that year.
This list of 2023 in paleoentomology records new fossil insect taxa that are to be described during the year, as well as documents significant paleoentomology discoveries and events which occurred during that year.
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