Juxta

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Phallus and juxta in ventro-lateral view of the moth Antispila oinophylla Antispila oinophylla - Phallus and juxta.png
Phallus and juxta in ventro-lateral view of the moth Antispila oinophylla

In insect anatomy, the juxta is an organ in the males of most Lepidoptera (i.e. moths and butterflies) that supports the aedeagus, the organ used for reproduction in insects. The juxta is located between the two valvae. [1] Juxta has also been used to refer to a similar structure in fleshflies. [2] [3]

The term comes from the Latin iuxta, meaning alongside. The biological use of the term should not be confused with the more general use of juxta- as a prefix.

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<span class="mw-page-title-main">Halteres</span> Pair of small club-shaped insect organs

Halteres are a pair of small club-shaped organs on the body of two orders of flying insects that provide information about body rotations during flight. Insects of the large order Diptera (flies) have halteres which evolved from a pair of ancestral hindwings, while males of the much smaller order Strepsiptera (stylops) have halteres which evolved from a pair of ancestral forewings.

<span class="mw-page-title-main">Fly</span> Order of insects

Flies are insects of the order Diptera, the name being derived from the Greek δι- di- "two", and πτερόν pteron "wing". Insects of this order use only a single pair of wings to fly, the hindwings having evolved into advanced mechanosensory organs known as halteres, which act as high-speed sensors of rotational movement and allow dipterans to perform advanced aerobatics. Diptera is a large order containing an estimated 1,000,000 species including horse-flies, crane flies, hoverflies and others, although only about 125,000 species have been described.

<span class="mw-page-title-main">Tachinidae</span> Family of insects

The Tachinidae are a large and variable family of true flies within the insect order Diptera, with more than 8,200 known species and many more to be discovered. Over 1,300 species have been described in North America alone. Insects in this family commonly are called tachinid flies or simply tachinids. As far as is known, they all are protelean parasitoids, or occasionally parasites, of arthropods, usually other insects. The family is known from many habitats in all zoogeographical regions and is especially diverse in South America.

<span class="mw-page-title-main">Ovoviviparity</span> Gestation type

Ovoviviparity, ovovivipary, ovivipary, or aplacental viviparity is a term used as a "bridging" form of reproduction between egg-laying oviparous and live-bearing viviparous reproduction. Ovoviviparous animals possess embryos that develop inside eggs that remain in the mother's body until they are ready to hatch.

<span class="mw-page-title-main">Flesh fly</span> Family of insects

Sarcophagidae are a family of flies commonly known as flesh flies. They differ from most flies in that they are ovoviviparous, opportunistically depositing hatched or hatching maggots instead of eggs on carrion, dung, decaying material, or open wounds of mammals, hence their common name. Some flesh fly larvae are internal parasites of other insects such as Orthoptera, and some, in particular the Miltogramminae, are kleptoparasites of solitary Hymenoptera. The adults mostly feed on fluids from animal bodies, nectar, sweet foods, fluids from animal waste and other organic substances. Juveniles need protein to develop and may be laid on carrion, dung or sweet plant foods.

<span class="mw-page-title-main">Calyptratae</span> Genus of flies

Calyptratae is a subsection of Schizophora in the insect order Diptera, commonly referred to as the calyptrate muscoids. It consists of those flies which possess a calypter that covers the halteres, among which are some of the most familiar of all flies, such as the house fly.

<span class="mw-page-title-main">Oestroidea</span> Superfamily of flies

Oestroidea is a superfamily of Calyptratae including the blow flies, bot flies, flesh flies, and their relatives. It occurs worldwide and has about 15,000 described species.

<i>Sarcophaga</i> Genus of insects (true flies)

Sarcophaga is a genus of true flies and the type genus of the flesh-fly family (Sarcophagidae). The members of this cosmopolitan genus are frequently known as common flesh flies.

<i>Wohlfahrtia magnifica</i> Species of fly

Wohlfahrtia magnifica, the spotted flesh fly, or sometimes called the screwworm fly, though species of flies from other families go by this name. It is a species of fly belonging to the family Sarcophagidae. The adults are about 6–10 mm in length; third-instar larvae are 5–7 mm in length.

<span class="mw-page-title-main">Miltogramminae</span> Subfamily of flies

The Miltogramminae are a subfamily of the family Sarcophagidae. They are kleptoparasites of solitary bees and solitary wasps.

<i>Sarcophaga pernix</i> Species of fly

Sarcophaga pernix, also known as the red-tailed flesh fly, is a fly in the Sarcophagidae family. This fly often breeds in carrion and feces, making it a possible vector for disease. The larvae of this species can cause myiasis, as well as accidental myiasis. It is potentially useful in forensic entomology.

<i>Sarcophaga bullata</i> Species of fly

Sarcophaga bullata, or the grey flesh fly, is a species of fly belonging to the family Sarcophagidae. It varies in size from small to large, 8 to 17 millimeters in length and is very similar in appearance and behavior to a closely related species, Sarcophaga haemorrhoidalis. S. bullata is a common scavenger species in the Eastern United States, but is found throughout the Nearctic region. Identification down to the species level in the family Sarcophagidae is notably difficult and relies primarily on the male genitalia. Though limited information is available regarding S. bullata, it has gained increasing recognition in the field of forensic entomology as a forensically-relevant fly species, as it may be among the first species to colonize human remains. In these instances, recovered maggots may be analyzed for post-mortem interval (PMI) estimations, which may be used as evidence in courts of law. Current studies regarding S. bullata have revealed a maternal effect operating in these flies that prevents pupal diapause under certain environmental conditions, which is an important factor to be considered during forensic analyses.

<i>Sarcophaga carnaria</i> Species of fly

Sarcophaga carnaria is a European(globalized) species of flesh fly within the common flesh fly genus, Sarcophaga.

Sarcofahrtiopsis is a genus of small flesh flies. Most are known from the Antilles and Central America. Many species feed on semiterrestrial crabs of the genus Cardisoma or are associated with bats.

Senotainia is a genus of satellite flies in the family Sarcophagidae. There are more than 70 described species in Senotainia.

<i>Wohlfahrtia</i> Genus of flies

Wohlfahrtia is a genus of flesh flies in the family Sarcophagidae. There are at least 20 described species in Wohlfahrtia.

<span class="mw-page-title-main">Paramacronychiinae</span> Subfamily of flies

Paramacronychiinae is a subfamily of flesh flies.

<i>Brachicoma</i> Genus of flies

Brachicoma is a genus of true flies in the family Sarcophagidae.

Galopagomyia is a genus of true flies in the family Sarcophagidae.

Goniophyto is a genus of true flies in the family Sarcophagidae.

References

  1. Eyer, J. R. (1926). "The morphological significance of the juxta in the male genitalia of Lepidoptera". Bull. Brook. Ent. Soc, 21, 32–37.
  2. Buenaventura, Ellana; Szpila, Krzysztof; Cassel, Brian; Wiegmann, Brian; Pape, Thomas (October 2019). "Anchored hybrid enrichment challenges the traditional classification of flesh flies (Diptera: Sarcophagidae)". Systematic Entomology. 45 (2): 281–301. doi: 10.1111/syen.12395 . S2CID   209586901.
  3. Buenaventura, Ellana; Pape, Thomas (January 2015). "Phylogeny of the Peckia-genus group: evolution of male genitalia in the major necrophagous guild of Neotropical flesh flies (Diptera: Sarcophagidae)". Organisms Diversity & Evolution. 15 (2): 301–331. doi:10.1007/s13127-015-0203-0. S2CID   16036600 . Retrieved 10 November 2020.