Is that your honeydew vine? It looks strange to me because of the concrete floor. Have you planted a honeydew before in the same place? From what I know, honeydew and cantaloupe prefer the soil or even grass but not cement. But in fairness to the concrete, there is no pest that would eat the fruits. Our recent harvest of cantaloupe in the backyard suffered some holes because of insects that feasted on the skin of the cantaloupe.