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Figure 2 | EvoDevo

Figure 2

From: Comparative gene expression supports the origin of the incisor and molar process from a single endite in the mandible of the red flour beetle Tribolium castaneum

Figure 2

Scanning electron micrographs (SEMs) of developing gnathal appendages of Tribolium embryos showing the inner and outer lobes. All views are ventral with anterior to the left unless otherwise indicated. The inner lobe is indicated with a star. The outer lobe is indicated with an arrowhead. The labial endite is indicated with an arrow in B. (A) Embryo at germ band retracting stage. Endites are visible on the maxillary appendage (Lc - Lacinia and Ga- Galea). The labial appendages have not yet fused at the ventral midline. The inner and outer lobes of the mandible are faintly distinguishable. (B, C) Lateral view of mandibular, maxillary and labial appendages of an embryo at a similar stage to A. (D) Close-up of mandibular limb bud with clearly distinguishable inner and outer lobes present. Anterior is bottom, lateral is to the right. Mandibular (Mn), maxillary (Mx) and labial (La) segments are indicated, as are the lacinia (Lc), galea (Ga), and maxillary palp (P).

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ISSN: 2041-9139