Caresheet - Messor minor

Messor minor is a poorly known species of Harvester Ant found all over the Mediterranean and the Middle East. It is a polymorphic red species with larger soldiers and smaller minor workers. Coming from a more tropical area, these ants do not require hibernation and are active year round.

These ants are particularly suited for displaying digging behaviour, as they will need to excavate chambers for both their brood and for storing seeds. As a result, they are also particularly destructive, and care should be taken to ensure they cannot escape.

 

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Taxonomy

-Familia: Formicidae/ants (Latreille, 1809)

--Subfamilia: Myrmicinae (Lepeletier, 1835 )

---Tribus: Stenammini (Ashmead, 1905)

----Genus: Messor (Forel, 1890)

------Species: Messor minor (Andre, 1883)

-------Subspecies: Messor minor maurus (Barquin, 1981); Messor minor hesperius (Santschi, 1927), Messor minor capreensis (Santschi, 1927), Messor minor calabricus (Santschi, 1927)

Basic information

Origin: around the Mediterranean sea (Morocco, southern France, Italy, Libya, Tunisia) and the Middle East (Israel and Palestine, Saudi Arabia, Iran, and Iraq) and

Habitat: Highlands in the Middle East, Steppe Areas

Colony: Monogynous

Colony size: 15000-50000 workers

Colony age: up to 25 years

Founding: Claustral

Workers: Polymorphic

Nest Areas: Soil Nests

Feeding: Graniphagy, Zoophagy (seeds, grains, nuts, almonds and dead insects)

Hibernation: None

Reproduction: Nuptial flight in September - November

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Appearance/Coloration

Workers: glossy, black abdomen, majors heads red-brown or black

Queen: black body, head and thorax

Males: black, small head, very hairy

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Size

Workers: 4-11mm

Queen: 11-12mm

Males: 7-8mm

Development time

Workers: 6 weeks, if heated

 

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Antkeeping information

Recommended for beginners: Yes, but starting colonies can be sensitive to light and Messor can grow fast.

Temperature: Outworld: 25 - 30°C, Nesting area: 23 - 28°C

Humidity: Outworld: 30 - 50%, Nesting area: 50 - 70%

Nest types: Messor require a dry area and a wet area. A hard plaster or even an acrylic nest can go a long way.

Formicarium size: Even small colonies should be provided with a decent sized outworld. From there on the setup should fit the current colony size.

Formicarium accessories: Heat source (heat mate, heating cable or heat lamp).

 

Temper/Behavior

Messor barbarus are very active, creative ants that love to dig, build and modify their environment to fit their needs. In the wild, Messor colonies will clear out some of the space from their surroundings. This behaviour can be very annoying for ant-keepers trying to decorate their outworlds.

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Additional antkeeping information

Messor need lots of water in order to construct their nests. Messor minor will often drown in open pools of water and so any water should be supplemented with an absorbent material.

Messor species will often chew up seeds into a form of "ant bread" which is distributed throughout the colony, and so do not share food via social stomachs.

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Diet & Nutrition

Sugars/Carbohydrates

Messor harvester ants get carbohydrates from seeds (almonds). Although feeding seeds is the most common method, most cereals can work as well (but only as a supplement,) as they are missing most other nutrients. Young colonies (before majors are born) require small seeds, such as dandelion or poppy seeds.

Messor will harvest as many seeds as they can and can build supplies for months, which leads to a pause in foraging.

Protein

Messor do not need to be fed any additional protein outside of their seeds, but they will do better with a range of feeder insects or "human" proteins such as eggs and unseasoned chicken.