🍓 Hydei Fruit Fly Care Guide

(Drosophila hydei — larger, flightless fruit flies)

Hydei are bigger and meatier than melanogaster, making them perfect for L3–L5 mantises and other small insectivores. They breed a little slower but produce large, long-lasting cultures.

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🧪 Supplies Needed

• 32–48 oz deli cups or culture jars

• Ventilated lids (fabric mesh, coffee filter, or foam plug)

• Dry fruit fly media

• Excelsior or coffee filters

• A healthy starter culture of hydei

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🥣 Fruit Fly Media

You can use a commercial mix or homemade media. A good recipe includes:

• Potato flakes

• Brewer’s yeast

• Sugar/honey

• Vinegar or citric acid (mold inhibitor)

Mix with water until the texture is thick batter / wet oatmeal.

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🪵 Excelsior / Climbing Material

Important for pupation and holding humidity down:

• Wood excelsior (preferred)

• Coffee filters

• Shredded cardboard

Fill ⅓ of the cup loosely.

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🌡️ Temperature & Humidity

• Temp: 74–82°F

• (Hydei breed slower than melanogaster — higher temps help a lot.)

• Humidity: Normal household humidity is fine.

• Avoid condensation; too much moisture causes mold and culture collapse.

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🧬 Life Cycle Timeline (Hydei)

Hydei take longer than melanogaster:

Stage

Time

Eggs laid

Within 24 hours of seeding

Larvae

~5–7 days

Pupae

~6–10 days

New flies emerge

~16–20 days

Peak production

Days 20–35

Culture decline

After ~5–6 weeks