Orsonwelles torosus

{{Short description|Species of spider}}

{{Speciesbox

| image =

| image_caption =

| taxon = Orsonwelles torosus

| authority = (Simon, 1900)

| range_map = Orsonwelles torosus distribution.svg

| range_map_caption = Original range in the Hawaiian Islands

| synonyms = *{{nowrap|Labulla torosa Simon, 1900}}

}}

Orsonwelles torosus is a species of linyphiid spider endemic to Kauai in the Hawaiian Islands. It was described in 1900 by the French naturalist Eugène Simon based on a specimen collected in the 1890s, but has not been collected since, and is presumed extinct.