Discal cell
- Pronunciation
- /DIS-kal sel/
- Category
- Anatomy
- Singular
- discal cell
- Plural
- discal cells
Definition
A closed or nearly closed in the central region of an insect wing, bounded by and typically located in the medial or cubital area of the wing. The presence, absence, shape, and position of the discal cell serve as critical diagnostic characters in lepidopteran, neuropteran, and other insect , often distinguishing , , or .
Etymology
From Latin 'discus' (disk, circle) + '' (enclosed chamber), referring to its typically rounded, central position on the wing
Example
In (: ), the shape of the discal on the forewing—whether elongated, shortened, or angled—helps distinguish such as from ; in (: ), a characteristic quadrate discal cell separates them from related .
Related Terms
Usage Notes
The term is most commonly applied in and , where discal is taxonomically significant; in and Hymenoptera, homologous structures may be referred to by different names (e.g., 'basal cell' or 'discoid cell') depending on the venation system used. Not all insect wings possess a discal cell—its absence is itself a diagnostic feature in some groups.