Camponotus microps

Camponotus microps

Camponotus microps is a medium-sized carpenter ant native to the mountain ranges of southeastern Arizona and adjacent regions in New Mexico and Sonora, Mexico. The species name comes from Greek meaning 'small eyes', a reference to their notably small eyes that distinguish them from related species in the C. festinatus complex ^[1]. Major workers measure 2.5-3.1mm in head width with a reddish-brown head and pale yellowish-brown mesosoma, while minor workers are smaller at 1.0-1.4mm and more uniformly yellow to yellowish-brown ^[1]. Queens are approximately 4.4mm in total length ^[1]. This is a ground-nesting species that builds nests in fine sandy soil, often marked by a small sand crater about 15cm in diameter, or under stones in grassy areas within mixed pine-oak-juniper woodland ^[1]. The species is currently known only from the Chiricahua Mountains but likely inhabits other nearby mountain ranges including the Dragoon, Huachuca, and Santa Rita Mountains ^[1].

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Mountain ranges of southeastern Arizona (Chiricahua Mountains) and adjacent New Mexico and Sonora, Mexico. Inhabits mixed pine-oak-juniper woodland at elevations of 1645-1680m ^[1]. Nests in fine sandy soil in grassy areas or under stones.
• Colony Type: Likely monogyne (single queen colonies) based on typical Camponotus patterns. Founding is claustral, queens seal themselves in and live off stored fat reserves until first workers emerge.
  • Colony: Monogyne
  • Founding: Claustral
• Size & Growth:
  • Queen: Approximately 4.4mm total length (HL 2.50mm, HW 2.05mm, ML 4.40mm) ^[1]
  • Worker: Major workers: 2.75-3.25mm head length, Minor workers: 1.60-1.90mm head length ^[1]
  • Colony: Estimated several hundred workers based on typical Camponotus colony sizes
  • Growth: Moderate, typical for Camponotus species
  • Development: 6-10 weeks (estimated based on typical Camponotus development at 24-26°C) (Development time is estimated from genus-level data as species-specific timing has not been documented)
• Antkeeping:
  • Temperature: Keep at 24-26°C for optimal brood development. Being from Arizona mountains, they can tolerate cooler temperatures down to around 18°C during cooler months. Provide a temperature gradient so ants can self-regulate.
  • Humidity: Moderate humidity around 50-60%. These ants come from relatively dry mountain habitats, so avoid overly damp conditions. Keep nest substrate slightly moist but allow it to dry between waterings.
  • Diapause: Yes, being from temperate mountain habitats in Arizona, colonies require a winter diapause period. Reduce temperature to 10-15°C for 2-3 months during winter, typically November through February in the Northern Hemisphere.
  • Nesting: Ground-nesting species that does well in Y-tong (AAC) nests, plaster nests, or naturalistic setups with soil substrate. Provide a nest chamber with fine sandy soil or appropriate substrate. Accepts test tube setups for founding colonies.
• Behavior: Typical carpenter ant temperament, generally non-aggressive toward keepers but will defend the nest if threatened. Workers are moderately active, primarily nocturnal or crepuscular foragers. Major workers serve as soldiers and foragers while minor workers handle brood care. Escape risk is moderate due to medium size, standard barrier methods like Fluon on test tube rims are sufficient. Does not have a painful sting but may bite if handled roughly.
• Common Issues: colonies may fail if kept too warm during winter, always provide proper diapause, founding queens are vulnerable to disturbance, minimize vibrations and light exposure during claustral founding, dry conditions can cause brood death, monitor substrate moisture carefully, wild-caught colonies may contain parasites, quarantine and observe new colonies, slow initial growth can lead to overfeeding, start with small prey items and minimal sugar

Nest Preferences and Housing

Camponotus microps is a ground-nesting species that naturally builds nests in fine sandy soil. In captivity, they do well in Y-tong (acrylic) nests with appropriate chamber sizes, plaster nests that retain some moisture, or naturalistic setups with a soil substrate. For founding colonies, a simple test tube setup works well, place the queen in a test tube with a water reservoir plugged with cotton, then wrap the tube in aluminum foil to create dark conditions. The queen will seal herself into a chamber and remain there until her first workers emerge. Once the colony reaches 20-30 workers, you can consider moving them to a formicarium if desired, though they can remain in test tube setups for quite some time. The key is providing appropriately sized chambers, major workers need slightly larger spaces than minor workers. ^[1]

Feeding and Diet

Like other Camponotus species, C. microps is omnivorous with a preference for protein-rich foods. In captivity, offer a varied diet including small insects (fruit flies, small crickets, mealworms cut into pieces), honey or sugar water as an energy source, and occasionally seeds or other plant matter. Major workers can handle larger prey items while minor workers prefer smaller pieces. Feed protein 2-3 times per week, and keep sugar water or honey available at all times. Remove uneaten prey after 24-48 hours to prevent mold. During the founding stage, the queen does not eat, she relies entirely on her stored fat reserves. Once workers emerge, they will begin foraging and can be offered food.

Temperature and Seasonal Care

Maintain nest temperatures around 24-26°C for optimal brood development. These ants come from Arizona mountain habitats where temperatures fluctuate with elevation and season. During the active growing season (spring through fall), warmer temperatures around 24-26°C will promote faster brood development. In winter, you must provide a diapause period, reduce temperatures to 10-15°C for 2-3 months, typically from late November through February. This mimics their natural seasonal cycle and is essential for colony health. During diapause, reduce feeding to once every 2-3 weeks and minimize disturbances. Do not diapause colonies in test tubes with water reservoirs, as the constant moisture combined with low temperatures can kill the colony, transfer to a dry setup for winter. ^[1]

Behavior and Colony Dynamics

Camponotus microps exhibits typical carpenter ant colony structure with distinct worker castes. Major workers (larger soldiers) handle defense and heavy foraging, while minor workers care for brood and maintain the nest. Colonies grow moderately, expect the first workers (nanitics) to emerge 6-10 weeks after the queen lays eggs, depending on temperature. Initial colonies grow slowly as the queen focuses on producing a small first brood. Once established, growth accelerates as more workers can care for more brood. Workers are primarily nocturnal or crepuscular, becoming more active in dim light. The species is not particularly aggressive but will bite defensively if the nest is threatened. They communicate through chemical trails and can recruit nestmates to food sources. ^[1]

Founding and Colony Establishment

Claustral founding is the typical reproductive strategy for this species. After mating during nuptial flights, a newly mated queen excavates a small chamber in soil, seals herself in, and lays her first eggs. She does not leave to forage during this time, she survives entirely on her stored fat reserves (claustral founding). The queen tends her eggs and larvae alone, feeding the larvae from her own metabolic reserves until the first workers emerge. These first workers (nanitics) are typically smaller than normal workers but begin foraging for food to support further colony growth. This founding period is critical, the queen is vulnerable to vibrations, temperature extremes, and mold. Keep founding colonies in dark, quiet locations with stable temperatures and moderate humidity. Do not disturb the queen or her chamber once she has sealed herself in.

Frequently Asked Questions

References