| Sisyridae Temporal range: | |
|---|---|
 | |
| Sisyra terminalis imago | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Neuroptera |
| Superfamily: | Osmyloidea |
| Family: | Sisyridae Banks, 1905 |
| Subfamilies | |
See text | |
Sisyridae, commonly known as spongeflies or spongillaflies, are a family of winged insects in the order Neuroptera. There are approximately 60 living species described, and several extinct species identified from the fossil record.
In general appearance, the adults resemble some brown lacewings (Hemerobiidae). The forewings of spongillaflies have a span of 4–10 millimetres. The greyish or brownish wings have few cross veins except in the costal field, and most of these are not forked. The subcostal (Sc) and radial (R1) veins are fused near the wingtip.
The larvae of spongillaflies look rather bizarre. Similar to those of some osmylids (Osmylidae) at first glance, they have spindly legs on a bulky thorax, long antennae, and flexible, threadlike mouthparts. However, the second and third instars carry seven pairs of jointed, movable tracheal gills beneath their plump abdomen. These gills are possessed by no other extant insect family, and readily distinguish them from osmylid larvae.
Adult spongillaflies are crepuscular or nocturnal. They are omnivores, sometimes hunting small invertebrates, but mainly scavenging on such animals' carcasses, as well as on pollen and honeydew.
The females deposit their eggs singly or as small clutches on plants that droop over freshwater lakes or slow-moving rivers. A protective web is spun to cover the eggs. When the larvae hatch, they drop down into the water where they develop until pupation. They use their mouthparts to parasitize Spongillidae freshwater sponges (e.g. of the genus Spongilla , hence the name "spongillaflies") and Phylactolaemata freshwater bryozoans by stinging into the host animals' body and sucking out cell contents. The antennae are stouter than they look and are used to aid in locomotion. Development to pupation takes between several weeks and one year.
Spongillafly larvae leave the water and go to hidden places nearby to pupate, choosing locations like beneath rocks or behind tree bark. They spin a cocoon for pupation, but in temperate climates they overwinter in the cocoon as larvae, pupating only the following spring.
Spongillaflies were formerly placed in the Osmyloidea, as their closest relatives were held to be the osmylids (Osmylidae) and the Nevrorthidae. This was due to the similar adaptations of the larvae of spongillaflies and osmylids. But this is apparently due to convergent evolution; actually, the spongillaflies seem to be closer to the brown lacewings (Hemerobiidae) than to the osmylids, but even more closely related to the dustywings (Coniopterygidae). And even though they are not often placed in the superfamily Coniopterygoidea yet, they most likely form a clade with the Coniopterygidae and thus it would seem that the Coniopterygoidea, rather than being an unnecessarily monotypic taxon, is expanded to signify that the spongillaflies and the dustywings are each other's closest relatives.[ citation needed ]
A few fossil genera are known, mainly from the Eocene like "Sisyra" amissa which may or may not be the first record of the living genus. [1] The genus Cratosisyrops , from the Aptian Crato Formation, was suggested to be a spongillafly member, but later authors Perkovsky and Makarkin in 2015 noted the fossil lacks details to confidently place it in the family. The oldest members of the family are species in the subfamily Paradoxosisyrinae [2] from Cenomanian Burmese amber and Prosisyrina from Santonian Taimyr amber. [3] [4]
The family is currently divided into two subfamilies with the four extant genera and two of the extinct genera placed into Sisyrinae, while five extinct genera are placed into the subfamily Paradoxosisyrinae. [2]
Sisyridae
The insect order Neuroptera, or net-winged insects, includes the lacewings, mantidflies, antlions, and their relatives. The order consists of some 6,000 species. Neuroptera is grouped together with the Megaloptera and Raphidioptera (snakeflies) in the unranked taxon Neuropterida.
Green lacewings are insects in the large family Chrysopidae of the order Neuroptera. There are about 85 genera and 1,300–2,000 species in this widespread group. Members of the genera Chrysopa and Chrysoperla are very common in North America and Europe; they are very similar and many of their species have been moved from one genus to the other time and again, and in the nonscientific literature assignment to Chrysopa and Chrysoperla can rarely be relied upon. Since they are the most familiar neuropterans to many people, they are often simply called "lacewings". Since most of the diversity of Neuroptera are properly referred to as some sort of "lacewing", common lacewings is preferable.
Mantispidae, known commonly as mantidflies, mantispids, mantid lacewings, mantisflies or mantis-flies, is a family of small to moderate-sized insects in the order Neuroptera. There are many genera with around 400 species worldwide, especially in the tropics and subtropics. Only five species of Mantispa occur in Europe. As their names suggest, members of the group possess raptorial forelimbs similar to those of the praying mantis, a case of convergent evolution.
Osmylidae are a small family of winged insects of the net-winged insect order Neuroptera. The osmylids, also called lance lacewings, stream lacewings or giant lacewings, are found all over the world except North and Central America. There are around 225 extant species.
Hemerobiidae is a family of Neuropteran insects commonly known as brown lacewings, comprising about 500 species in 28 genera. Most are yellow to dark brown, but some species are green. They are small; most have forewings 4–10 mm long. These insects differ from the somewhat similar Chrysopidae not only by the usual coloring but also by the wing venation: hemerobiids differ from chrysopids in having numerous long veins and forked costal cross veins. Some genera are widespread, but most are restricted to a single biogeographical realm. Some species have reduced wings to the degree that they are flightless. Imagines (adults) of subfamily Drepanepteryginae mimic dead leaves. Hemerobiid larvae are usually less hairy than chrysopid larvae.
The Berothidae are a family of winged insects of the order Neuroptera. They are known commonly as the beaded lacewings. The family was first named by Anton Handlirsch in 1906. The family consists of 24 genera and 110 living species distributed discontinuously worldwide, mostly in tropical and subtropical regions. Numerous extinct species have also been described. Their ecology is poorly known, but in the species where larval stages have been documented, the larvae are predators of termites.
The Nevrorthidae are a small family of winged insects of the order Neuroptera. Extant species may be described as living fossils. There are 19 extant species in four genera, with a geographically disjunct distribution: Nevrorthus, comprising 5 species with scattered distributions around the Mediterranean; Austroneurorthus, with two species known from southeastern Australia; Nipponeurorthus, comprising 11 species known from China and Japan; and Sinoneurorthus, known from a single species described from Yunnan Province, China. They are traditionally placed in the Osmyloidea, alongside Osmylidae and the spongillaflies (Sisyridae), but some research has considered them to be the sister group to the rest of Neuroptera. The larvae have unique straight jaws that are curved at the tips, and live as unspecialised predators in the sandy bottom sediments of clear, fast flowing mountain rivers and streams. They pupate underwater on the underside of stones. The adults are likely predators or feed on honeydew and other sugar-rich fluids.
Nymphidae, sometimes called split-footed lacewings, are a family of winged insects of the order Neuroptera. There are 35 extant species native to Australia and New Guinea.
Psychopsidae is a family of winged insects of the order Neuroptera. They are commonly called silky lacewings.
Rhachiberothidae, sometimes called thorny lacewings, are a family of winged insects in the order Neuroptera. The family has only 14 extant species in 4 genera found in Sub-Saharan Africa, but has a diverse fossil record extending back to the Early Cretaceous in Lebanon, Eurasia and North America. Like the closely related Mantispidae members of the group possess raptorial forelegs, which probably only evolved once in the common ancestor of the groups.
The dustywings, Coniopterygidae, are a family of Pterygota of the net-winged insect order (Neuroptera). About 460 living species are known. These tiny insects can usually be determined to genus with a hand lens according to their wing venation, but to distinguish species, examination of the genitals by microscope is usually necessary.
Microberotha is an extinct monotypic genus of "beaded lacewing" in the family Berothidae known from a fossil found in North America. When described the genus contained a single Ypresian-age species Microberotha macculloughi.
Coniopterygoidea is a superfamily in the lacewing order Neuroptera which is considered the basal most linage in the order and sister to all other neuropteran clades. The superfamily includes the single living family Coniopterygidae (dustywings). In past classifications, Coniopterygoidea was expanded to include Sisyridae (spongillaflies) and placed in the paraphyletic suborder Hemerobiiformia.
Prosisyrina is an extinct genus of lacewing in the neuropteran family Sisyridae. The genus contains two described species, Prosisyrina sphinga and Prosisyrina sukachevae. Prosisyrina is known from a group of Late Cretaceous fossils which were found in Asia.
Paradoxosisyra is an extinct genus of lacewing in the spongefly family, Sisyridae. The genus contains a single species, Paradoxosisyra groehni and is placed into the extinct subfamily Paradoxosisyrinae. Paradoxosisyra is known from a solitary Middle Cretaceous fossil which was found in Asia.
Dlusskyidris is an extinct genus of ant in the Formicidae subfamily Sphecomyrminae, and is one of the five genera placed in the tribe Sphecomyrmini. The genus contains a single described species, Dlusskyidris zherichini, and is known from three Late Cretaceous fossils which have been found in northern Russia.
2017 in paleoentomology is a list of new fossil insect taxa that were described during the year 2017, 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 2016, as well as other significant discoveries and events related to paleoentomology that were scheduled to occur during the year.
Dipteromantispidae is an extinct family of neuropterans known from the Cretaceous period. Unlike other neuropterans, the family possesses only a single set of fully developed forewings, with the hindwings reduced to haltere-like structures. They are generally small in size and possess raptorial forelegs. They are considered to belong to Mantispoidea, with an uncertain position within the clade. Some authors have suggested that they represent a subgroup of Mantispidae, and should instead be referred to as the subfamily Dipteromantispinae within that family.
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.
