Question

Which of the following holometabolous insect order does not belong to Panorpoid orders

• A. Mecoptera
• B. Siphonaptera
• C. Lepidoptera
• D. Hymenoptera

Hint:

To remember the Panorpoid orders, use the mnemonic: "Many Silly Flies Try Leaping" (Mecoptera, Siphonaptera, Diptera, Trichoptera, Lepidoptera). Hymenoptera is evolutionary distinct and basal compared to this group.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Holometabolous insects (superorder Endopterygota) undergo complete metamorphosis, which includes egg, larval, pupal, and adult stages.
Within Holometabola, major evolutionary lineages are recognized.
The Panorpoid complex (superorder Mecopterida) is a major monophyletic clade of holometabolous insects.
Detailed Explanation:
The Panorpoid complex (Mecopterida) comprises several closely related orders that share evolutionary traits, particularly wing venation and larval characteristics.
This group includes:
1. Mecoptera (scorpionflies)
2. Siphonaptera (fleas)
3. Diptera (true flies)
4. Trichoptera (caddisflies)
5. Lepidoptera (butterflies and moths)
Hymenoptera (wasps, bees, and ants), although holometabolous, belongs to a separate and basal lineage within Endopterygota (often grouped in its own division, Hymenopterida or as a sister group to the rest of the Holometabola).
Therefore, Hymenoptera is not part of the Panorpoid orders.

Step 2: Final Answer:
Among the given options, Hymenoptera does not belong to the Panorpoid orders.