Gladicosa gulosa

(Walckenaer, 1837)

Drumming Sword Wolf Spider

Gladicosa gulosa, commonly known as the Drumming Sword Wolf Spider, is a medium-sized wolf spider found in deciduous forests of eastern North America. Males of this produce distinctive substrate-borne vibratory signals described as "purring" or "drumming" during courtship. The species is , does not construct webs for prey capture, and has been documented as prey for multiple spider wasp species.

Gladicosa gulosa by (c) Bill Keim, some rights reserved (CC BY). Used under a CC-BY license.

Common Spiders U.S. 179-80 by James Henry Emerton (1847 – 1931). Used under a Public domain license.

Gladicosa gulosa P1080633a by
xpda. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Gladicosa gulosa: /ˌɡlædɪˈkoʊsə ɡjʊˈloʊsə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Males can be distinguished from similar wolf spiders by their specialized courtship involving substrate-borne vibration production. The lacks web-building structures typical of orb-weaving spiders. Specific morphological characters distinguishing G. gulosa from and other lycosids require expert examination and are not documented in available sources.

Images

Habitat

Found in Beech-Maple forests and other deciduous forest types. Occurs in multiple vertical strata including ground layer, herbaceous vegetation, and shrub layer. Has been observed active on snow-covered ground in winter conditions.

Distribution

North America: United States and Canada. Eastern North American distribution with records from Vermont and other eastern states.

Seasonality

Active year-round; observed on snow in mid-winter (mid-20s°F) and presumably active during warmer months. Specific seasonal activity patterns not well documented.

Life Cycle

Females carry in a spherical egg sac attached to the until hatching. Spiderlings may ride on the female's back after hatching until able to forage independently.

Behavior

; hides under leaves during daylight hours. Does not construct webs or permanent shelters. Males produce substrate-borne vibratory signals ("purring" or "drumming") as a primary component of courtship . Has been observed on snow surface in winter.

Similar Taxa

Hogna spp.Large wolf spiders that overlap in and are also preyed upon by the same spider wasp (Anoplius aethiops); distinguished by lack of specialized vibratory courtship signals
Schizocosa ocreataAnother wolf spider that shares and spider wasp ; S. ocreata males produce different types of seismic signals during courtship
Rabidosa santritaOverlaps in and range; distinguished by behavioral and morphological differences not detailed in available sources

More Details

Predation by Spider Wasps

Documented as prey for at least two spider wasp : Anoplius aethiops (Pompilidae) and Priocnemis minorata (Pompilidae). paralyze the spider with venom and cache it in underground burrows as food for their larvae.

Research Significance

The has become a subject of and animal communication research due to its specialized male vibratory signaling. However, quantitative behavioral data remain limited and the species is considered understudied.