07/24/2024
THE SQUASH VINE BORER
The squash vine borer has four stages in its life cycle: egg, larval, pupal, and adult:
1. Egg
In late June or early July, adult squash vine borers emerge from cocoons in the ground and lay eggs singly on the stems of susceptible plants, usually near the soil line. The eggs are tiny, brown, flattened ovals that are glued to the stem or petiole. Each female can lay 150–200 eggs in her lifetime.
2. Larval
After 8–14 days, the eggs hatch and the larvae immediately bore into the stem, leaving a small hole surrounded by sawdust-like frass. The larvae feed on the plant tissue for 4–6 weeks, tunneling through the center of the stem and blocking water flow to the rest of the plant. They are wrinkly, white to cream-colored caterpillars that can grow up to 1 inch long with dark heads.
3. Pupal
When they are ready to pupate, the larvae exit the stem and burrow 1–2 inches into the soil, where they spin a black, rough-textured cocoon and overwinter as pupae. The pupae are dark brown and shiny with tapered ends, and take 14–30 days to complete development.
In warmer climates, they can emerge for a second life in cooler climates they stay buried and overwinter in your soil. 
4. Adult
In the following summer, the adults emerge from the cocoons to begin the life cycle again. They are fat, black clear-winged moths with orange legs and an orange and black abdomen, and look similar to wasps.
Rototilling and plowing is one way to kill them as you will be bringing their pupae  and cocoons to the surface, where they will be frozen or fed on by birds or buried even deeper, preventing them from emerging.
Crop rotation does no good as the moth is winged and will just move to a new area.  the Trichogramma wasp  is one way to battle it, but only does good in late spring time when the eggs are being laid .
Identifying the eggs on the stem of your squash and Identifying them in the plants , destroying them through either larva extraction, BT injection ( https://www.facebook.com/share/v/j45QonT2qeu441wv/?mibextid=WC7FNe ) or fire are supplementary Control . 
Planting later in cooler climates seems to be one of the best methods, especially if you are growing in urban or suburban areas where other people will be growing cucurbits as well . By planting later, your stems will be too small for the moth to lay her eggs  and there will not be a second cycle that year.