Andricus lustrans

Classification

Pronunciation

How to pronounce Andricus lustrans: //ænˈdraɪkəs ˈlʌstrænz//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Andricus lustrans by the Smithsonian. Used under a CC0 license.
Andricus lustrans by the Smithsonian. Used under a CC0 license.
Andricus lustrans by the Smithsonian. Used under a CC0 license.
Andricus lustrans by the Smithsonian. Used under a CC0 license.

Summary

Andricus lustrans is a small gall wasp that is part of the Cynipidae family. This species induces gall formation on oak trees, providing habitat for its larvae and contributing to the ecosystem dynamics of temperate woodlands.

Physical Characteristics

Andricus lustrans is characterized by its small size, typically measuring 3-5 mm in length. The adult wasps have a cylindrical body shape, with a smooth, shiny exoskeleton that can vary in color from yellowish to dark brown. The morphological features include distinctive antennae with multiple segments and a pronounced ovipositor.

Identification Tips

To identify Andricus lustrans, look for the characteristic shape of its antennae, which have several segments. Additionally, the coloration and size of the wasp can help distinguish it from other species within the Andricus genus, especially during its active season.

Habitat

Andricus lustrans is commonly found in temperate woodlands and areas with abundant oak trees, as it relies on these trees for its lifecycle.

Distribution

This species is primarily distributed across North America and parts of Europe, usually in regions where oaks are prevalent.

Diet

Andricus lustrans is a gall wasp that feeds on the plant tissues of oak trees, particularly in the larval stage where they induce gall formation on the tree.

Life Cycle

The lifecycle of Andricus lustrans involves egg laying, larval development within galls, pupation, and emergence of adult wasps. The galls formed are typically round and can be seen on the leaves or buds of oak trees.

Reproduction

Andricus lustrans reproduces sexually. Females lay eggs in the developing tissues of oak trees, where the larvae develop inside galls that provide nourishment and protection.

Predators

Predators of Andricus lustrans include larger insects and birds that feed on the larvae or adult wasps. Additionally, parasitic wasps may also target them.

Conservation Status

Not currently listed as threatened or endangered, but habitat loss may affect local populations.

Ecosystem Role

Andricus lustrans plays a role in oak forest ecosystems, contributing to the plant community dynamics through its interactions with oaks and other organisms.

Economic Impact

The presence of Andricus lustrans can have an economic impact on oak trees, as significant gall formation may affect the growth and health of these trees, which are valuable for timber and landscape purposes.

Collecting Methods

  • Trapping with malaise traps
  • Visual inspection of oak trees for galls
  • Sweep netting in oak woodland areas

Preservation Methods

  • Preserving specimens in ethanol
  • Drying specimens for long-term storage
  • Mounting on pins for display

Evolution

Part of an evolutionary lineage that has adapted to live symbiotically with oak trees by inducing gall formation for larvae development.

Similar Taxa

Misconceptions

Some people mistakenly believe that all galls are harmful to trees; however, many gall-forming insects like Andricus lustrans play an important ecological role.

Tags

  • gall wasps
  • Cynipidae
  • oak trees
  • Andricus