[Morphological anomalies in ticks (Acari: Ixodida) collected from natural environment].

: Among the ticks with morphological anomalies were: Argas persicus--fed female with atrophia of the third right leg together with the coxa from the chicken in the hen house (Mfakar Alsrki--Syria); Hyalomma marginatum--partly fed female with complete absence of the fourth right leg, was found on a sheep (Mfakar Alsrki); Ixodes ricinus--partly fed female with asymmetry of the body from the roe-deer (Popielno, province Suwalki); I. I. ricinus--partly fed female with anomaly in shape of the dorsal disk, was found probably on a cattle in province Krakow.