Illustrations from Morphology of the Honey Bee Larva by J.A. Nelson

Bee Health March 11, 2010 Print Friendly and PDF

These images are taken from 'Morphology of the Honey Bee Larva' by J.A. Nelson. Download a .pdf: Morphology of the Honeybee Larva.


Nervous system and ventral body wall of mature honeybee larva, showing the brains (Br), the central body of the tentorium (Ten), thoratic letgs (1L, 2L, 3L), ventral nerve cord (VNC), ganglion (Gng), genital rudiments (G1-3), rudiments of wings (WngR)and Suboesophageal ganglion (SoeGng).

Download a larger version: Nervous system and ventral body wall of mature honeybee larva.


A: Honey bee larva treated with caustic potash showing tracheal trunk (TraTr), spiracle (Sp), anterior tracheal loop(ATraL), tracheal commissure (TraCom) and posterior tracheal loop (PTraL)system.

B: head of larva treated with caustic potash showing anterior tracheal loop (ATraL), tracheal branches to head (Bra1-2) and spriacle (Sp).

Download a larger version: Nervous system and ventral body wall of mature honeybee larva.



A: Posterior end of a honey bee larva treated with caustic potash showing trachael trunk (TraTr), spiracle (Sp) and hind-intestine (HInt).

B: Distal end of tracheal branch showing tracheoles (tra) and nuclei of tracheal end cells (Nu).

Download a larger version: Posterior distribution of tracheae.


A: Head of mature larva showing endoskeleton, viewed from dorsal surface.

B: Brain and suboesophageal ganglion of mature larva, face view.

C: Same as B, side view.

D: Mature worker larva, removed from cell, viewed from the right side.

E: Mature worker larva, fixed within the cell and afterwards removed, showing the compressed hexagonal form assumed while within the cell. The head and anus are both turned toward the observer, the body being bent in the shape of the letter U.

F: Face view of head of mature larva.

G: Head of mature larva, side view.

Explanation of symbols and letters can be found at the bottom of this page.

Download a larger version: Images of mature larva.


Alimentary canal, silk glands (SlkGl) and Malpighian tubules (Mal) of a mature larva.

Download a larger version: Alimentary canal, silk glands and Malpighian tubules of mature larva.



Dorsal diaphragm and heart, fourth, fifth, and sixth abdominal segments, viewed from the inner surface. Diaphragm cells represented by heavy wavy lines.

Download a larger version: Alimentary Dorsal diaphragm and heart of mature larva.