beetles: Flea beetles dataset

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Flea beetles dataset

Description

Data were collected on the genus of flea beetle Chaetocnema, which contains three species: concinna, heikertingeri, and heptapotamica. Measurements were made on the width and angle of the aedeagus of each beetle. The goal of the original study was to form a classification rule to distinguish the three species.

Usage

beetles

Format

The dataset has 74 instances described by 3 variables. The variables are as follows:

Width

The maximal width of aedeagus in the forpart (in microns).

Angle

The front angle of the aedeagus (1 unit = 7.5 degrees).

Species

Species of flea beetle from the genus Chaetocnema.

Source

Lubischew, A.A. (1962) On the use of discriminant functions in taxonomy. Biometrics, 18, 455-477.

fdm2id documentation built on Aug. 28, 2026, 9:07 a.m.