Latrodectus

(redirected from Widow spider)
Also found in: Dictionary, Thesaurus, Wikipedia.

Latrodectus

 [lat″ro-dek´tus]
a genus of poisonous spiders. L. mac´tans is the black widow spider. See also spider bite.
Latrodectus mac´tans a species found in the United States; commonly known as the black widow. Its bite may cause severe symptoms or even death. (For first aid, see spider bite.)

Latrodectus

(lat'rō-dek'tŭs),
A genus of relatively small spiders, the widow spiders, capable of inflicting highly poisonous, neurotoxic, painful bites; they are responsible, along with Loxosceles species (the brown spiders), for most of the severe reactions from spider envenomation. Medically important species are known from Australia, North and South America, South Africa, and New Zealand. Some venomous species, in addition to Latrodectus mactans (the black widow spider), are Latrodectus bishopi (the red-legged widow spider), Latrodectus euracaviensis, Latrodectus geometricus, and Latrodectus tredecimguttatus.
[L. latro, servant, robber, + G. dēktēs, a biter]

Latrodectus

/Lat·ro·dec·tus/ (-dek´tus) a genus of poisonous spiders, including L. mac´tans, the black widow spider, whose bite may cause severe symptoms or even death.

Latrodectus

A genus of venomous spiders–Family Theridae–eg, black widow spider, Latrodectus mactans, endemic to the US, with a characteristic orange-red hourglass-shaped marking on the abdomen; the venom is a non-hemolytic neurotoxin Clinical Latency of hours, followed by severe myalgia, myospasm, truncal rigidity, N&V, diaphoresis, shock; most cases resolve spontaneously, small children are at ↑ risk of M&M Treatment Establish airway, supportive care

La·tro·dec·tus

(lat-rō-dek'tŭs)
A genus of relatively small spiders, the widow spiders, capable of inflicting highly poisonous, neurotoxic, painful bites.
[L. latro, servant, robber, + G. dēktēs, a biter]

Latrodectus

A genus of poisonous spiders. L. mactans is known as the black widow spider.

Latrodectus

a genus of poisonous spiders belonging to the dipneumomorph family Theridiidae.

Latrodectus hasseltii
the Australian redback spider, an ecological variant of L. mactans and with the same toxicity.
Latrodectus mactans
a species found in the United States; commonly known as the black widow. In New Zealand called katipo. Satiny black with a broad sagittal red stripe in the female, which is venomous. Its bite may cause severe local pain and general paralysis.
References in periodicals archive ?
False widow spiders are not fast moving or aggressive, so have no reason to bite unless they are seriously provoked.
Contrastingly, the bite of the black widow spider, native to North America, can cause severe symptoms and even death.
But a statement added: "Both schools are temporarily shut because of an infestation by false widow spiders.
Jason and Sonia are confident it was a false widow spider.
My first is the sane, rational one that goes, "Hmm, I'm sure this is very exaggerated and that false widow spiders present us with no real threat.
A bite by the black widow spider (Latrodectus mactans) is painful but rarely fatal.
The black widow spider genus Latrodectus (Araneae: Theridiidae): phylogeny, biogeography, and invasion History.
In order to test these two general explanations for the male courtship display, we investigated the courtship behavior of the white widow spider, Latrodectus pallidas O.