Latrodectus mactansnach Deutschland eingeschleppt (Araneae: Theridiidae)

Ultralow oxygen treatment for control of Latrodectus hesperus (Araneae: Theridiidae) on harvested table grapes.

The spider Latrodectus hesperus Chamberlin & Ivie (Araneae: Theridiidae) was subjected to low and ultralow oxygen (ULO) treatments at different temperatures. Complete control of the spiders was achieved in 24-h ULO treatments with 0.5% O2 or lower at 1 degrees C and in a 24-h low oxygen (2%) treatment at 15 degrees C. Oxygen level and temperature greatly affected spider mortality. At 1 degrees ...

The black widow spider genus Latrodectus (Araneae: Theridiidae): phylogeny, biogeography, and invasion history.

The spider genus Latrodectus includes the widely known black widows, notorious because of the extreme potency of their neurotoxic venom. The genus has a worldwide distribution and comprises 30 currently recognized species, the phylogenetic relationships of which were previously unknown. Several members of the genus are synanthropic, and are increasingly being detected in new localities, an occu...

The Occurrence of Red-Back Spider Latrodectus hasselti (Araneae: Theridiidae) in Bandar Abbas, Southern Part of Iran

BACKGROUND Due to importance and fatal affect of Red-back spiders, Latrodectus hasselti, a faunistic survey for presence of this spider in Bandar Abbas has been conducted. This animal is considerably the most medically importance spiders all over the world. METHODS Live adult spider specimens were collected from Bandar Abbas town using hand catch conventional method and transferred to the lab...

‘Rectangular orb’ webs of Synotaxus (Araneae: Theridiidae)

new records of three latrodectus species found in khorasan province (araneae: theridiidae)

three threidiid spiders of the genus latrodectus occur in khorasan province: l.tredecimguttatus, l.pallidus, l.dahli. the three are described, their diagnostic features are illustrated, and taxonomic notes are given where possible. spider bites are very common in these regions, so, further notes about the medical importance of these species are given. a dichotomic key to the species of the genu...