Millipede bleed (Blaniulus guttulatus) has a cylindrical body, variable in color, from whitish to gray-yellow. The body length of the male is 7.5-14 mm, and the females from 7.5 to 14 mm. Males have 37-50 segments, and females are built from 41-60 segments. The male has 59-87 pairs of legs, and the female has 67 to 103 pairs. There is a row of 40 red spots along each side of the body; these are glands secreting a red, burning liquid, containing, among others prussic acid (hydrocyanic acid). Larvae are similar to adults, but have fewer segments. Millipede bleed is more and more associated with human activity and companions.
Occurs on strawberry, potato, beet, cucumber, pea, bean and many other plantations. It damages germinating seeds and young plants in the ground and under covers. At night it feeds on above-ground parts of seedlings, the day under the soil surface. Millipedes are dangerous for emerging plants, especially in the period of prolonged cool weather, delaying germination and emergence.
Millipede also feed on roots, tubers and fruits, previously attacked by other pests. When the plantation is strongly dominated by millipedes, then in the roots of almost every plant feeds for a few pests. Damage can be particularly high on peat soils, humus and humid soils. Rare appearances of this species are rare.
Black millipede (Cylindroiulus teutonicus) is a West European species. The eastern border of its range runs through Poland, which is why it is more numerous in the western part of our country. Black millipede is shiny, cylindrical, brown-black color. His body consists of 38-53 segments, whose armor combines to form a tight, strong body layer. There are 63 to 85 pairs of legs in a male and 65-97 pairs of legs in a female. The length of the male is 19-32 mm, and the width of the body is 1.6-2.6 mm; The dimensions of the females are as follows: length 18 -37 mm, width 2-3.2 mm.
Black millipede is common in the field and in buildings, for example in greenhouses, where it damages most of the cultivated plants. In the field he destroys root plants. The black millipede is especially common in gardens and parks, from where he makes trips to human buildings. The black millipede appears around buildings and enters rooms on the ground floor and basements. He does not bite people or pets, but worries about his excessive numbers.
Brown millipede (Cylindroiulus frisius) is found in greenhouses, crops under shelter and in vegetable gardens and parks. It has a gray-brown color. The body is made up of 34-50 rings. The male has 49-77 pairs of legs, and the female 67-91 pairs. The length of the male body is 9.5-14 mm, width 0.7-1.0 mm; in females, respectively, 13-19 mm and 1.1-1.4 mm. The eyes form one black spot.