Nomenclature of the veins of the fore-wing of Teleogryllus oceanicus
| Name of vein . | Abbreviation . | Description . |
|---|---|---|
| Costa | C | Anterior edge |
| Subcosta | Sc | Strong vein with branches towards anterior edge of wing |
| Radius | R | Strong vein between Sc and M |
| Media | M | With Sc and R forms the lever that drives wing opening and closing |
| Cubitus 1 | Cu1 | Its ascending and descending branches form the distal edges of the harp |
| Cubitus 2 | Cu2 | Forms the proximal edge or base of the harp and bears the file on its underside |
| Anal 1 | A1 | Runs parallel to and adjacent to Cu2, fusing with Cu2 near the anal node |
| Anal 2, 3 | A2, A3 | Veins traversing the anal area and meeting at or near the anal node |
| Name of vein . | Abbreviation . | Description . |
|---|---|---|
| Costa | C | Anterior edge |
| Subcosta | Sc | Strong vein with branches towards anterior edge of wing |
| Radius | R | Strong vein between Sc and M |
| Media | M | With Sc and R forms the lever that drives wing opening and closing |
| Cubitus 1 | Cu1 | Its ascending and descending branches form the distal edges of the harp |
| Cubitus 2 | Cu2 | Forms the proximal edge or base of the harp and bears the file on its underside |
| Anal 1 | A1 | Runs parallel to and adjacent to Cu2, fusing with Cu2 near the anal node |
| Anal 2, 3 | A2, A3 | Veins traversing the anal area and meeting at or near the anal node |
Nomenclature follows the Comstock—Needham system(Comstock, 1918; Snodgrass, 1935) and the description given by Ragge(1955). The veins are named in order from the anterior to the posterior edge; Fig. 1 follows this usage. The C, Sc, R and M veins form the lateral or anterior field of the wing; The anal veins are somewhat ill-defined — that part of the wing is termed the anal area; the region in which Cu1, Cu2 and the anal veins run is the dorsal or posterior field of the wing.