Habronyx Explained

Habronyx is a genus of parasitoid wasps belonging to the family Ichneumonidae.[1] The species of this genus are found in Europe, Australia, and North and South America.

Distribution

Habronyx species are found in most realms, with the exception of the Afrotropical realm.[2]

Reproduction

Habronyx adults lay their eggs inside Lepidopteran larvae (i.e. caterpillars) by piercing them with their ovipositor. Habronyx eggs consist of an equatorial disc and a caudal stalk, making them look a bit like the cartoon oil lamp from Aladdin.[3] It's thought that the shape is adapted to attach the egg to the inside of the caterpillar's integument.[4] Once the eggs hatch, the Habronyx larvae consume the caterpillar from the inside. They emerge from the deceased caterpillar as adults.

Description

The adult of most Habronyx species are generally about 30mm in length.

Like all ichneumons, the genitals of the male Habronyx consists of a capsule formed by two lateral gonosquamae. The membraneous part of the aedeagus is covered in small spines; Habryonx shares this feature with several other genera but some genera have a smooth aedeagus.

Species

Notes and References

  1. Web site: Habronyx (Foerster, 1868) . 23 February 2021 . . en.
  2. Alvarado . Mabel . Grados . Juan . 2015-03-24 . Habronyx Förster (Hymenoptera: Ichneumonidae: Anomaloninae) in Peru and Ecuador: three new species, a range extension, and a new host record . Zootaxa . 3937 . 1 . 50–60 . 10.11646/zootaxa.3937.1.2 . 25947460 . 1175-5334.
  3. Gauld . I. D. . Ian D. Gauld . 1976 . THE CLASSIFICATION OF THE ANOMALONINAE HYMENOPTERA ICHNEUMONIDAE . Bulletin of the British Museum (Natural History) Entomology . 33 . 1–135.
  4. Book: Tothill, John D. . The natural control of the fall webworm (Hyphantria cunea Drury) in Canada : together with an account of its several parasites . 1922 . F.A. Acland, King's Printer . Ottawa. 10.5962/bhl.title.63051 .
  5. Web site: Habronyx victorianus . 2022-12-17 . Australian Faunal Directory . en.