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Lubischew data (1962, pp. 460--461, table 2): 39 Haltica flea beetles specimens which belong to two cryptic species.
Sources of specimens:
Haltica oleracea:
1, 2, 3, 4, 6: Western Europe (Germany, France, Italy); 5: Leningrad; 7, 8: Perm; 11, 12: Kiev; 15, 16: Middle Volga (Kuibyshev); 17: Orel district, Middle Russia; 9, 10: Northern Caucasus; 13, 14, 18, 19: Transcaucasia (Delizhan, Akstafa).
H. carduorum:
6: Northern Russia (Elabuga); 1, 5, 9, 10, 11, 12, 14, 16, 20: Middle Russia (Penza, Orel, Voronezh districts); 3, 4, 17; Northern Caucasus; 2, 15, 18, 19: Black Sea Coast of the Caucasus; 13: Transcaucasia (Armenia); 7, 8: Middle Asia (Schachriziabs).
haltica
These data frame contains the following columns:
Species
Species epithet
No
Number of sample (see below)
x5
The distance of the transverse groove from the posterior border of the prothorax, in microns
x14
The length of the elytram, in 0.01 mm
x17
The length of the second antennal joint, in microns
x18
The length of the third antennal joint, in microns
# NOT RUN {
plot(prcomp(haltica[, -(1:2)])$x[, 1:2], col=haltica$Species)
haltica.qj <- Classproj(haltica[, -(1:2)], haltica$Species, method="QJ")
plot(haltica.qj$proj, col=haltica$Species)
text(haltica.qj$centers, levels(haltica$Species), col=1:2)
# }
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