Pineapples culture Ananas comosus of Valle, they have been attacked by symphylids last vean (Symphyla), classified by Dr. Evert Lindquist like Scutigerella inmaculata. Biologie aspects, distribution, harms and relationships with some microorganisms some studied in this work. This has a wide distribution on Valle and through surveys and inspections over soil and plants their presance was verified in Palmira, Pradera, Buga; Bugalagrande, Sevilla, Dagua y Darien, the main producer pineapple zones in this department. Laboratory essays showed that this symphilids has saphrophytes and plant eater food habits and by this way could produce harm the pineapples roots causing symptom broom, foliage getting red color and weakness in plant; also is shown that three symphylids per plant produce tipical symptom of attacking. It is made evident from seed bed being early attacks were more grave causing' root losses about 66% (percent) aproximatilly.