Tinged Cobweb Spider, Mottled Comb-footed Spider
Platnickina tincta
Theridiidae (Cobweb Spiders / Comb-footed Spiders), Order Araneae
Physical Description
Small, delicate spider with a rounded to oval-shaped abdomen typical of theridiids. The cephalothorax is relatively flat with a central dark stripe or patch. The specimen shown appears slightly deceased or curled up on a paper towel, hiding exact proportions, but exhibits the classic compact body and slender, pale, banded legs.
Size Estimate
Body length is typically around 2.5 mm to 4.5 mm for females, and slightly smaller for males (2.0 mm to 3.5 mm). Leg span is usually around 8 mm to 12 mm. This specimen appears to be an adult or subadult within this tiny size range.
Coloration & Markings
Variable light tan, yellowish, to pale brown base color. The carapace features a prominent central dark brown or black longitudinal stripe. The abdomen usually displays an intricate pattern of mottled white, yellow, brown, and black markings, often with a central dark foliate band. Legs are pale yellowish-tan with dark brown ringed bands near the joints.
Web Type
Builds small, irregular tangle webs (cobwebs) in low vegetation, shrubs, tree bark, under leaves, and occasionally around exterior window frames or quiet indoor corners.
Eye Arrangement
Eight eyes arranged in two compact transverse rows of four on the front of the carapace. The eyes are relatively equal in size and typically ringed with dark pigment.
Leg Characteristics
Slender, moderately long legs with distinct dark banding at the joints. Typical of comb-footed spiders, the fourth pair of legs possesses a row of serrated bristles (the comb) used to comb sticky silk over prey.
Venom & Safety Information
Venom Information
Contains mild venom used exclusively to immobilize tiny insect prey. The venom is harmless to humans and large pets, with no medically significant neurotoxins or cytotoxins.
Medical Significance
Not medically significant. The chelicerae (fangs) are far too small and weak to pierce human skin. Biting incidents are virtually non-existent, and even if bitten, symptoms would be limited to minor, transient localized redness or itching.
Safety Recommendations
No special safety measures are necessary as this spider poses zero health risk. If found indoors, it can be gently wiped away or relocated outside using a soft brush or tissue.
Habitat & Behavior
Habitat & Range
Widespread across Europe, Holarctic regions, and introduced/established in parts of North America. Commonly found in woodlands, gardens, hedges, bushes, and occasionally inside buildings, sheds, or around outdoor fixtures.
Behavior & Temperament
Reclusive, non-aggressive, and nocturnal. Spends the day resting hidden near the edge of its web or under a leaf cover. When disturbed, it typically drops from its web on a dragline thread or curls up into a tight, motionless ball.
Diet & Prey
Feeds on small flying and crawling insects such as gnats, mosquitoes, aphids, small flies, and occasionally other small spiders that get entangled in its sticky web strands.
Seasonal Activity
Most active from late spring through early autumn, with adult males actively searching for females in early summer. Overwinters as immatures in leaf litter or bark crevices.
Description
Platnickina tincta is a charming, tiny cobweb spider frequently encountered in outdoor gardens and natural habitats across temperate zones. Recognizing it is easy due to its distinctively striped carapace and mottled, patterned abdomen. Despite its small stature, it is an efficient predator of garden pests, snaring flying insects in its loose tangle web.
Key Features
Small size (under 5mm), strong dark central stripe on a pale cephalothorax, dark banding on pale legs, and a mottled, high-contrast pattern on a globular abdomen.
Similar Species
Other Theridiidae species such as Theridion varians, Phylloneta sisyphia, or Steatoda triangulosa (Triangulate Cobweb Spider). Easily distinguished from medically significant spiders like the Black Widow (Latrodectus species) by color, size, and pattern.
Life Cycle
Females produce a small, globose, pale silk egg sac in early to mid-summer, which they guard near their retreat. Spiderlings emerge in late summer, disperse via ballooning or crawling, and overwinter as subadults before reaching maturity the following spring.
Ecological Importance
Serves as an effective natural biological control agent for small agricultural and garden pests, including aphids and fungus gnats, while providing food for birds, wasps, and larger spiders.
Conservation Status
Not evaluated by the IUCN, but populations are abundant, stable, and widespread with no conservation concern.
Interesting Facts
Despite its tiny size, Platnickina tincta can capture insects significantly larger than itself by rapidly casting sticky silk lines over the struggling prey using its specialized leg combs.
Photography Tips
Due to its miniature size and tendency to curl up when disturbed, use a macro lens with good diffused lighting. Focus sharply on the dark carapace stripe and the abdominal pattern for accurate species verification.
Identified: 2026-07-27T04:32:30.054550