Peruvian Black & White (Cyriocosmus ritae)

A gem from the jungles of Peru, Cyriocosmus ritae is a bold and eye-catching dwarf tarantula. With its velvety black base and striking white patterning — including a stand-out heart-shaped spot on the abdomen — it’s as stunning as it is small. Great for collectors of unique species and dwarf specialists.

Quick Facts

Common Name: Peruvian Black & White

Scientific Name: Cyriocosmus ritae

Origin: Peru

Size: 2–2.5 inches (5–6.5 cm) leg span

Lifespan:

• Females: 8–10+ years
• Males: ~2–3 years

Temperament: Skittish but not defensive — quick and quirky

Coloration

Jet black body with sharp white or cream-colored leg banding

Iconic white “heart” marking on the abdomen

Clean and high contrast — like a mini zebra with flair

Often mistaken for Cyriocosmus elegans, but ritae has more pronounced white striping

Housing & Care

Enclosure Type: Terrestrial — small enclosures with moderate depth

Substrate: 2–3 inches of moist substrate (coco fiber/topsoil mix)

Humidity: 70–80% — higher humidity with good airflow

Temperature: 72–78°F (22–25°C)

Decor:

• Small hide (bark chip, cork shard)
• Leaf litter and moss
• Water dish optional — moisture from substrate usually enough

Despite its size, this species loves to burrow and web — give it anchor points and depth.

Feeding

Diet: Pinhead crickets, micro roaches, small mealworms

Feeding Schedule:

• Slings: 2–3x/week
• Juveniles: Weekly
• Adults: Every 10–14 days

Confident eater for its size — will often take down prey nearly its size

Why Keep This Little Legend?

Striking black and white contrast with a signature heart pattern

Unique dwarf species — perfect for space-conscious collectors

Surprisingly bold and visible when settled

Easy to care for and fast growers (for dwarf tarantulas)

Great intro to the Cyriocosmus genus

Notes

Extremely small — escape risk if enclosure isn’t secure

Very quick — use caution when rehousing

Not for handling

Needs slightly higher humidity and good substrate depth