From Bible Encyclopedia
(1) עכּבישׁ, ‛akkābhīsh; compare Arabic ‛ankabût, English Versions of the Bible “spider”; Septuagint ἀράχνη, aráchnē (Job 8:14; Isaiah 59:5). In Job 8:14 the spider's web is an emblem of frailty: “Whose confidence shall break in sunder, and whose trust is a spider's web.” Frailty or futility seems to be indicated also in Isaiah 59:5, Isaiah 59:6 : “They hatch adders' eggs, and weave the spider's web:... Their webs shall not become garments, neither shall they cover themselves with their works” “Spider's web” is in Job 8:14 bēth ‛akkābhīsh, “spider's house,” while in Isaiah 59:5 it is ḳūrē ‛akkābhīsh, קוּר, ḳūr, according to BDB, being “thread” or “film.” The trust of the hypocrite is compared to the spider's web or house (Job 8:14). It is said of the wicked by Isaiah that they “weave the spider's web” (Isaiah 59:5), i.e., their works and designs are, like the spider's web, vain and useless. The Hebrew word here used is 'akkabish, “a swift weaver.”
(2) שׂממית, semāmīth, “lizard,” the King James Version “spider”; Septuagint καλαβώτης, kalabṓtēs (Proverbs 30:28). Semāmīth of Proverbs 30:28 is probably the gecko, a kind of lizard, as Septuagint and the Revised Version (British and American) have it. See Lizard. It is rendered in the Vulgate by stellio, and in the Revised Version by “lizard.” It may, however, represent the spider, of which there are, it is said, about seven hundred species in Israel.