Nealiolus curculionis

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Nealiolus curculionis
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Braconidae
Genus: Nealiolus
Species:
N. curculionis
Binomial name
Nealiolus curculionis
(Fitch, 1859)
Synonyms [1]
  • Sigalphus curculionis Fitch 1859
  • Nealiolus inaratus (Martin 1956)
  • Nealiolus tibiator (Cresson 1872)

Nealiolus curculionis is a species of parasitic wasp in the family Braconidae. It is a parasitoid of the sunflower stem weevil Cylindrocopturus adspersus , [2] and a number of other species of stem-boring weevils.

Contents

Description

Nealiolus curculionis has a body length of just under 4 mm (0.16 in). It has an oval shape, a moderately-curved carapace and a transverse clypeus, and the third tergite is finely sculpted with longitudinal lines. The color is basically black apart from the legs, which are brown, the dark brown antennae, the brown clypeus and mandibles, the brown ovipositor and the dark brown tip of the abdomen. [3]

Distribution

This wasp is found in Canada, the United States and Mexico, and has also been recorded in Costa Rica, Guatemala and Venezuela. [3]

Life cycle

This wasp shows a considerable degree of synchronization with its host species. When parasitizing the sunflower stem weevil, the female wasp lays a single egg into a first instar larva, which feeds just under the epidermis of the stem where it is within reach of the wasp's ovipositor. By the winter, the host larva is fully developed and enters diapause in a chamber near the base of the plant. The wasp larva, still contained within its living host, also enters diapause. In the spring, the wasp larva resumes feeding and after about 21 days chews its way out, feeding on the weevil larval carcase before pupating. The adult wasp emerges about ten days later, and is on the wing between June and August, with males emerging a few days before females. [4]

Hosts

In the United States, the sunflower stem weevil (C. adspersus) is the most common host species, but other larvae parasitised include the red sunflower seed weevil (Smicronyx fulvus), the boll weevil (Anthonomus grandis), the plum curculio (Conotrachelus nenuphar), [2] and the potato stalk borer (Trichobaris trinotata). [4] In Mexico, the main insect host is Trichobaris championi , feeding on the Mexican husk tomato (Physalis ixocarpa). [3]

Related Research Articles

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Ichneumonoidea

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<i>Manduca quinquemaculata</i> Species of moth

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Braconidae

The Braconidae are a family of parasitoid wasps. After the closely related Ichneumonidae, braconids make up the second-largest family in the order Hymenoptera, with about 17,000 recognized species and many thousands more undescribed. One analysis estimated a total between 30,000 and 50,000, and another provided a narrower estimate between 42,000 and 43,000 species.

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<i>Lixus concavus</i> Species of beetle

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<i>Aphelinus mali</i>

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<i>Hypera postica</i> Species of beetle

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<i>Pison spinolae</i> Species of insect

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<i>Lysiphlebus testaceipes</i>

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References

  1. Yu, Dicky Sick Ki. "Nealiolus curculionis (Fitch 1859)". Home of Ichneumonoidea. Taxapad. Retrieved 10 October 2018.[ dead link ]
  2. 1 2 "Nealiolus curculionis". Biological control. Cornell University: College of Agriculture and Life Sciences. Retrieved 2 September 2018.
  3. 1 2 3 López-Martínez, V.; Sánchez-Garciá, J. A.; Huerta-Paniogua, A.; Calyecac-Cortero, G.; Bautista-Martínez, N. & Figueroa-de la Rosa, J. I. (2006). "Redescription of Nealiolus curculionis (FITCH) (Hymenoptera: Braconidae), with a new host record and distribution data". Proceedings of the Entomological Society of Washington. 108: 405–410.
  4. 1 2 Capinera, John L. (2001). Handbook of Vegetable Pests. Gulf Professional Publishing. pp. 130–132. ISBN   978-0-12-158861-8.