Description of a new species of the genus <i>Idiasta</i> Foerster (Hymenoptera: Braconidae) from India

A new species of Idiasta Foerster is described and illustrated from India in this paper. Its distinguishing characters from other closely related species are also discussed. These are : vertex smooth , mandible tridentate , F2 twice longer than F1 , metanotum smooth , propodeum anteriorly polished with mid longitudinal carina and major portion reticulate

Description of a new species of the genus <i>Indiopius</i> Fischer (Hymenoptera: Braconidae) from India

A new braconid species, Indiopius fischeri Samiuddin & Ahmad sp. nov. is described from India. Its distinguishing characters from other closely related species are in the upper mandibular tooth, maxillary palpi, mesosoma, hind femur and basal carina

The edge frequency polygon

A piecewise linear competitor to the frequency polygon, the edge frequency polygon, is proposed: instead of joining histogram ordinates at midpoints of bins by straight lines, one connects values at bin edges by straight lines, those values being averages of contiguous histogram ordinates. The new proposal is as simple and interpretable as the ordinary frequency polygon while holding theoretical and practical advantages

Description of a new species of the genus <i>Bitomus</i> Szepligeti (Hymenoptera: Braconidae)from India

A new species of Bitomus Szepligeti is described and illustrated from India. The taxonomic validity of new species has been supported by description of detail morphology, four illustrations and detail discussion. Its distinguishing characters from other closely related species are also discussed. These are: clypeus 1.3x as wide as high, mesonotum 0.8x as wide as long, propodeum with a short mid-longitudinal carina anteriorly, vain r arising from basal third of stigma

On bin-based density estimation

We contribute to the study of data binning in density estimation. The particular disadvantage of histograms due to the effect of bin edge placement is stressed (again).We investigate how simple methods, both existing (such as the frequency polygon) and novel (proposing other natural piecewise linear adaptations), improve on the basic histogram (and on each other).Lurking in the background throughout are links with kernel density estimation