Liometopum occidentaleSpecies Introduction

Species Introduction Claustral. A single newly-mated queen founds the colony alone. Their nuptial flights happen on hot afternoons. Liometopum occidentale are typically found in valleys ranging from Southern Washington to Baja California, where they can be found forming vast trails in search of carbohydrates. These ants are aggressive, territorial, and will readily swarm prey items. Diurnal, peak activity at 90°F+. Very fast growing, expect lots of foraging. They burn through energy fast, making them hungry for both protein and sugar. Keep the nest humid, the food stocked, and they will entertain you constantly. Formicarium Liometopum occidentale are quite adaptable and can 'make do' with most nest types but prefer lower humidity. The TJL Arboreal Nest (large spacer) is a good choice for these. A secure nest and a fluon barrier for the outworld is recommended due to large colony sizes, and aggressive behavior. Moderately warm. They prefer to be active at 90°F+, but construct their nests in the wild to keep the colony itself relatively cool. We suggest a gradient of ~75°F to ~90°F across the setup. 3/8" is right for this small-bodied species. Water & Humidity Dry and warm. Arboreal ants typically prefer drier nesting conditions. Not recommended to use TrapJaw Labs PVA sponges for founding. Keep a liquid feeder with water (distilled, purified, or spring) in the foraging area at all times. Carbohydrates Carbohydrate-loving. In the wild the workers spend their day zooming around in search of food and burn through a lot of energy. These ants will perish without constant access to carbohydrates. Honeydew Honey or basic sugar water both work; honeydew honey better matches their wild micronutrient profile. We recommend providing sugar-water (we use our Ant Nectar Mix) and fresh-water liquid feeders in the outworld at all times. Protein We suggest feeding L. occidentale colonies fruit flies 2–3 times a week. The more frequent, the better. TrapJaw Labs feeds our L. occidentale colonies with pre-killed D. melanogaster and D. hydei fruit flies. These ants will take most feeder insects. Twice per week. Increase amounts to scale with brood development. Maintenance Week 1: Settle the founding queen somewhere dark and undisturbed. Stress from disturbance can cause her to consume her own brood, so avoid checking on her during this process. Weeks 2–4: First workers appear. Start feeding protein (2–3×/week) and put out a 24/7 sugar feeder. You'll quickly see them take advantage of the food they're given and the colony will increase in size. Months 2+: Maintain humidity and liquid feeders 24/7. Consider a larger humid nest upgrade and more outworld space; optional supplemental heating speeds growth (but don't overdo it). Diapause is not required for this species. Care Summary Dry nest environment Liquid feeder kept full High protein requirements Room temp can work; a gradient of 75-90°F significantly accelerates growth Every day: Check liquid feeder is full Two to Three times per week: Offer pre-killed protein, clear leftovers within 24h Every other week: Top up nest humidity