Dr. Murai Éva - Gubányi András szerk.: Parasitologia Hungarica 28. (Budapest, 1995)
The guard length of the large hooks of T. taeniaeformis was found to be prominent for the species investigated. The vast range found for T. regis includes values of T. parva, T. laticollis, T. kotlani, T. parenchymatosa, T. hydatigena, T. martis and T. selousi. At the same time, a partial overlap can be shown between T. regis and T. crassiceps, T. solium, T. pisiformis, T. multiceps and T. acinonyxi. Values of the guard length of small hooks of T. serialis represent a normal distribution (P= 0.075). Total width (TW) As regards the total width, three different groups of small hooks can be distinguished. Species with thin small hooks include: T. ovis, T. polyacantha, T. crassiceps, T. solium, T. serialis, T. pisiformis, T. multiceps, T. kotlani, T. parenchymatosa, T. hydatigena, T. brauni and T. acinonyxi. Species with moderately wide small hooks are T. parva, T. regis, T. martis and T. selousi. Wide small hooks are those of T. taeniaeformis and T. laticollis. T. polyacantha, T. ovis, T. crassiceps, T. solium, T. serialis, T. pisiformis, T. multiceps, T. kotlani, T. hydatigena and T. brauni have thin large hooks. T. parva, T. regis, T. laticollis, T. parenchymatosa, T. martis and T. selousi belong to large hooks with medium width. T. taeniaeformis shows the largest value. Only the small hooks of T. multiceps and the large hooks of T. brauni represent a normal distribution (P = 0.063, P = 0.070). Length of the perpendicular from the anterior chord to the lowest point of the curve of the blade (PEL), The small hooks of T. polyacantha, T. ovis, T. crassiceps, T. solium, T. serialis, T. multiceps, and T. brauni have small PEL values. Large PEL value is characteristic of T. parva, T. regis, T. pisiformis, T. laticollis, T. selousi. T. kotlani, T. parenchymatosa, T. liydatigena, T. martis and T. acinonyxi are between the above-mentioned two groups with regard to PEL of small hooks. T. taeniaeformis shows extremely large values. The large hooks of T. polyacantha, T. ovis, T. crassiceps, T. solium, T. serialis, T. multiceps, T. kotlani, T. parenchymatosa and T. brauni have small PEL values. Moderate values have been observed for T. pisiformis, T. parenchymatosa, T. martis and T. acinonyxi. Large values can be found for T. parva, T. regis, T. laticollis and T. selousi and the value of T. taeniaeformis has proved to be the highest. Discriminant Analysis The large and small hooks originally belonging to 18 species have been correctly classified only in 83.2 and 84.3 %, respectively by discriminant analysis using 8 morphometric characters. Because of the low rate of correct classification, the analyses were accomplished at individual level, dividing all specimens into 45 groups. After regrouping all cases, the first two discriminant functions (DF) already consisted of more than 90% of variance and the discrimination based on the first three DF gave surprising results. T. acinonyxi MHNG-94/ 18-mount shows a low discriminationfor both large and small hooks, its hooks are mostly classified into the group of the other T. acinonyxi labelled MHNG-94/20 (in 88.9 and 25.0%, respectively). The small hooks of T. acinonyxi (MHNG-94/ 18) are also similar to those of T. solium in 11.1%, at the same time its large
