Pamphobeteus sp. “costa” female • 2 1/2″

Description

Pamphobeteus sp. “costa” has been in the US hobby since 2014. As an undescribed species the only available information has been name, country of origin and a photograph supplied by the original breeder. The name ‘costa’ refers to the coast, the coast of Ecuador in this case. Since introduction, hobbyists have raised C. sp. “costa” to adulthood. Adult males show the expected purple iridescence. Adult females are black, without the purple sheen shown in the original breeder’s photos. Nevertheless, an adult P. sp. “costa” is something to see.

Spiderlings show an X-mass tree pattern on their rumps, a common feature in some Pamphobeteus spiderlings. In early juveniles the pattern gives way to a black rump covered with reddish light brown hairs. Females grow to around 7 inches.

Care is straightforward. Keep spiderlings in moderately elevated humidity, 75-90% RH. Boost humidity to this level with slightly dampened substrate. Limit ventilation only enough to allow humidity to build. Room temperature (68-72F) is fine. Warmth up to 80F will speed growth, but note, with warmth comes dryness. A water dish can help stave off dehydration if you wish to use higher temperatures.

Note, substrate should be slightly damp not wet. Wetness encourages microbial growth. As your specimen grows it can be kept under a wider range of conditions. You’ll be able to increase ventilation and limit substrate dampening to half the enclosure or less. A water dish may still be helpful if you, like us, prefer dry substrate for later instars.

We have not seen this species burrow, but it will use a hide if provided.

Photos: 1-one of the juvenile females for sale (ArachnoEden); 2-early instars (overseas breeder); 3-adult female (overseas breeder 2014)

Care highlights:

• slightly dampened substrate for spiderlings
• moderately elevated humidity (75-90% RH), adjust ventilation to achieve
• lower substrate water content for juveniles & adults
• consider a water dish for hydration and humidity
• room temperature (68-72F) up to 80F
• consider a hide, forest litter and plantings for enrichment