What is "dysdera"

Dysdera is a genus of spiders from the family Dysilera (Dysderidae), Dysderidae is the largest family of spiders, containing over 240 types and most inhabit small regions in the Mediterranean. They originated from Central Asia to Central Europe, Dysdera crocata, Dysdera ninnii Canestrini, Dysdera dubrovninnii, Dysdera hungarica Kulczyñski, Dysdera longirostris Doblika are the five groups still found in Central Europe after the last glacial period. They are also abundantly found in North African countries like Morocco, Egypt, Ethiopia, The Iberian Peninsula, and Australia. Some species are found in the U.S., Dysdera crocata is found from New England down to Georgia and all the way across the country in California. However, at least two species inhabit South America (D. solers in Colombia, (possibly a relict species from the post-miocene era) and D. magna in Brazil and Uruguay, they are also very common in the central area of Chile). While Dysdera inhabits all of the Macaronesian archipelagos, the most drastic change from strictly the Canary Islands. Researches have discovered around 50 species just on the Canary Islands, six of those 50 are associated with the oldest eastern island. The spider population are limited to the highest elevation on Lanzarote and Fuerteventura islands. The most likely reason why Dysdera are abundantly found on the Canary Islands is due to 27 species found on the close shores of the Iberian peninsula and North Africa. Groups like Dysdera Crocata and Dysdera Erythrina found on the two neighboring lands are found more often than Dysdera Lata, Longirostris, which are also found in North Africa and Iberia. This family of spiders from there separate species have many common names; European garden spider, slater-eating spider, sow-bug killer, woodlouse hunter, and woodlouse spider.