Camponotus ocreatus (Carpenter Ant)

Meet Camponotus ocreatus: Orange Desert Carpenter Ant!

Why Camponotus ocreatus?

Camponotus ocreatus is a polymorphic carpenter ant of the southwestern United States and northern Mexico. A dark head against an orangey-brown body, large majors and nocturnal foraging make an attractive arid-land colony.

Rocky foothills and woodland edges

Emery described the taxon in 1893 (as a subspecies of C. maculatus; later raised to species). Mackay and Mackay (2002) record nests under stones in rocky loam, often on north-facing slopes and at forest edges in New Mexico foothills, oak-juniper woodland and pinyon pine. Wheeler and Wheeler (1986) list southern Nevada records from Hot Desert and Pinyon-Juniper, with nests under stones or as open craters of excavated earth. Foraging is nocturnal.

Colony:

• Type: Typically monogyne; occasional multi-queen reports in hobby literature (confirm for your stock)
• Founding: Fully claustral
• Mature size: Not firmly published; grows to a large western carpenter colony in hobby reports

Queen:

• Size: Hobby reports roughly 14-17 mm (Wheeler major worker length about 12 mm for comparison)
• Colour: Darker head; orangey mesosoma and gaster tones common

Workers:

• Size: Hobby reports roughly 6.5-9 mm for typical workers; majors up to about 14 mm
• Polymorphic: Yes
• Colour: Often blackish head with brown to orange remainder (colour varies)

Development:

• Egg to adult worker: Hobby figure around 4-6 weeks with proper heating (UNVERIFIED scientifically)

Housing:

• Nest: Under stones in rocky soil in nature; acrylic, plaster, ytong or similar dry-leaning setups
• Temperature: Keep warm; hobby targets often about 27-29°C active season (roughly 80-85°F)
• Humidity: Medium nest moisture; outworld on the dry side

Hibernation / Diapause:

• Notes: Sources disagree. Some southwestern sellers skip cold storage; others suggest a mild cool rest for higher-elevation stock. American desert carpenter guidance often favours a light winter slowdown rather than deep fridge diapause. Match locality (OPINION)

Diet:

• Primary: Constant sugars plus insects after workers appear

Interaction:

• Sting: No (Formicinae)
• Bite: Yes; majors can pinch; formic acid spray

Key Stats:

• Queen Size: Estimated: 14-17mm
• Worker Size: Estimated: 6.5-9mm (typical workers)
• Major Worker Size: Estimated: up to about 14mm
• Temperature: Estimated: 27-29°C (Nest) active season
• Humidity: Estimated: medium nest moisture; outworld on the dry side
• Diet: Sugars & Insects
• Colony Size: Estimated: large western carpenter colony (exact maximum unpublished)
• Diapause: Hobby sources conflict: many southwestern sellers skip fridge storage; higher-elevation stock may take a mild cool rest

Ready for a desert carpenter?

Warmth, sugars and protein, plus a dry-leaning outworld, suit Camponotus ocreatus. Watch for night activity and enjoy those orange-toned majors.