# Triploidy in parthenogenetic Chinese Helophorus aquilaAngus et al., 2014

## TL;DR

A female paratype of the Chinese Helophorus aquila beetle was found to have a triploid nucleus with 32 chromosomes.

## Contribution

The paper reports the first observation of triploidy in the species Helophorus aquila.

## Key findings

- A slide revealed a triploid nucleus with 32 chromosomes in a female H. aquila beetle.
- One chromosome was likely lost during slide preparation.

## Abstract

Checking old unphotographed slides of chromosome preparations in the possession of R.B.A. revealed one slide labelled “frater ♀7g 6/6/13 ✓”. The beetle with these data is a female paratype of H.
aquila Angus et al., in the general collection of the Natural History Museum, London. One almost complete dividing nucleus was found, with 32 chromosomes, indicating a triploid nucleus with one chromosome lost in the course of preparation of the slide.