Table 1 Description of the 15 anatomical landmarks used to characterise S. calcitrans wing geometry. Numbers relate to landmarks shown in Fig. 1

1

Costal vein intersection with humeral vein

2

Costal vein intersection with subcosta vein

3

Costal vein intersection with radial vein 1

4

Costal vein intersection with radial vein 2+3

5

Costal vein intersection with radial vein 4+5

6

Costal vein intersection Medial vein

7

Basal median cubital vein intersection medial vein

8

Basal median cubital vein and anterior cubital 2

9

Radial vein 4+5 vein intersection with radial medial

10

Medial vein intersection with radial medial vein

11

Radial 2+3 vein intersection with radial 4+5 vein

12

Medial vein intersection with distal median cubital

13

Anterior cubital vein 1 intersection with distal median cubital

14

Anterior cubital vein 1 intersection with anterior cubital vein 2

15

Anal vein 1 intersection with anterior cubital vein 2