Camponotus castaneus

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Camponotus castaneus
Camponotus castaneus P1260416a.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Genus: Camponotus
Subgenus: Camponotus
Species:
C. castaneus
Binomial name
Camponotus castaneus
(Latreille, 1802)

Camponotus castaneus, the red hazelnut carpenter ant, is a species of carpenter ant located in the eastern United States. [1] [2] [3] [4] [5] [6] [7] It is a primarily orangish-red ant in the family Camponotus. Its workers are usually around 8-10 mm, and queens around 18-20 mm. As with most Camponotus species, C. castaneus has majors and super-majors, usually appearing in the second or third year of the colony's founding, majors are usually 10-14 mm, with super majors being around 13-17 mm. C. castaneus has a generalist diet, feeding on insects and carbohydrates such as honeydew, which is easily accessible. The ant has a smooth thorax and abdomen, with 1 node separating them.

Contents

C. castaneus alate queen, side view Camponotus castaneus P1440422a.jpg
C. castaneus alate queen, side view
C. castaneus alate queen, top view Camponotus castaneus P1440425a.jpg
C. castaneus alate queen, top view
C. castaneus antweb.org specimen Camponotus castaneus casent0103654 profile 1.jpg
C. castaneus antweb.org specimen

Diapause (hibernation)

Similar to other Camponotus , C. castaneus will go into a hibernation-like state during the winter, called diapause. Though, unlike other ants, they go into diapause very early, usually during the first cool days of fall, they stop foraging; this is usually the reason they are not seen during fall or winter. In some hot areas, such as Southern Florida, they still go through diapause during fall and winter, regardless of the temperatures.

Development

Like all ants, C. castaneus has 4 main stages, egg, larvae, pupa or pupae, and adult ant. The entire process from egg to adult ant takes around 35-60 days, depending on the environment factors, such as heat, food, and humidity.

Egg

The eggs are laid by the queen ant, which is around 18-20 mm, common in Camponotus. Eggs are very small, usually 1-3 mm, and look like white beads. They can take up to 1 or two weeks to hatch into the next stage, larvae.

Larvae

Once the egg hatches, it hatches into larvae, which is the longest stage before adult ant, taking a few weeks at least. These larvae need to be fed, and they are hook shaped, and they must be fed, unlike the eggs and pupae. During diapause, developing ants are usually kept at this stage. More on feeding in the social behavior section, during this stage is also when the gender of the ant is decided, whether it is a female queen or worker, or a drone (male ant).

Pupa/pupae

Once the larvae develops, it turns into a pupa, which depending on the species of ant, may be what is said to be "naked". Naked pupae look like pale worker ants that are clumped together. C. castaneus however, does not have naked pupae, meaning the pupae are "spun". which makes it look brown and oval-shaped, these are usually spun by the queen and worker ants, though sometimes it is spun with the developing ant itself. This way of spinning a cocoon can be useful to some species such as a weaver ant.

Location

C. castaneus is located in Eastern North America, stretching from Florida to Maine. These ants are most commonly found in rotting wood, as most Camponotus ants enjoy hollowing out this wood using their large mandibles to carve through. Unlike termites, Camponotus ants do not eat the wood, as their digestive systems are not strong enough to break it down.

Nuptial flights

A nuptial flight is a mating frenzy found in some insects but also found in all winged ants. They come in different times depending on the species, and C. castaneus has nuptial flights in June and July, some queens may even be found in August, though in smaller amounts. During a nuptial flight, hundreds of alate queens and drones (males) are released into the air, in a ratio of 1:10. Usually, these queens mate with one or several males before flying to the ground, ripping off their wings, then setting out to find a good place to start a colony. This is the most common place and time queen ants die, usually to other ants that take them as prey. Nuptial flights can be of any size, with massive nuptial flights being high in the air, to tiny ones with a few queens and many males. Usually, the largest nuptial flights are at the beginning of June.

Founding

Once a queen has found its founding place, it burrows into the ground or hides in a small space. Queens get stressed easily, another common way a colony will fail its founding. If a queen becomes stressed from light or vibrations, it may eat its eggs in fear. In its first year, it usually gets fewer than ten workers, due to its long incubation time, before initiating diapause.

Lifespan

Generally, C. castaneus colonies have a very long maximum lifespan, a common trait in Camponotus species. Though in the wild most queens die before founding, or possibly when the colony is small, workers can live up to multiple years, and the queen can live for over a decade.

Identification

C. castaneus is mostly orangish-red in color. Like all Camponotus colonies, they have a square-ish head with a smooth thorax and abdomen with 1 node separating them. They generally have darker heads; they grow darker, depending on the worker's age. Workers are usually dark orangish-red with queens being a light to dark red. [8] Drones are very commonly a maroon color. Queens have 3 eyes on their head called ocelli, which when they had wings helped them get a better view for flying. Camponotus in general, do not have stingers, therefore do not sting.

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References

  1. "Camponotus Castaneus Report". Integrated Taxonomic Information System . Retrieved 2018-04-30.
  2. "Camponotus castaneus species details". Catalogue of Life . Retrieved 2018-04-30.
  3. "Camponotus castaneus". GBIF. Retrieved 2018-04-30.
  4. "Camponotus castaneus Species Information". BugGuide.net. Retrieved 2018-04-30.
  5. Ward, Philip S.; Blaimer, Bonnie B.; Fisher, Brian L. (2016). "A revised phylogenetic classification of the ant subfamily Formicinae(Hymenoptera: Formicidae), with resurrection of the genera Colobopsis and Dinomyrmex". Zootaxa . 4072 (3). Magnolia Press: 343–57. doi: 10.11646/zootaxa.4072.3.4 . PMID   27395929.
  6. Christopher M. Wilson; Autumn Smith-Herron (2016). "Morphology of the male genitalia of Brachymyrmex and their implications in the Formicinae phylogeny". Journal of Hymenoptera Research . 50. Pensoft Publishers: 81–95. doi: 10.3897/JHR.50.8697 . ISSN   1070-9428.
  7. "AntWeb". California Academy of Sciences . Retrieved 2018-04-30.
  8. "Camponotus (Tanaemyrmex) Castaneus (Latrielle)". Mississippi State University. Joe A. MacGown.

Further reading