Rhysida nuda (Centipede)

A short list of key identifying features for this species:
- 20 pairs of walking legs plus one pair of non-walking legs at rear of body
- body length between 40-73mm (average 58mm)
- head and most body segments bluish yellow to blackish green (viewed from above)
- rear margin of body segments usually darker than the rest of the segment
- first (basal) antennae segments dark to light bluish or greenish, other segments a lighter colour, usually yellowish
- under (ventral) side of body and first (proximal) part of legs yellowish, further (distal) part of legs usually bluish
- antennae long to very long (would reach back to between body segments 4-7) with 17-21 segments, first 3 segments with a smooth surface 

Full list of identifying features from Koch, L.E. (1985) J.Nat.History 19:205-214.
- 9 pairs of spiracles - on segments 4 6 9 11 13 15 17 19 21
- Cephalic plate width 2.5-4.2mm, mean 3.5
- Anal-leg trochanter length 3.1-5.1mm, mean 4.1
- Tergites with mesodorsal line and often with dark posterior margins
- Maxilliped base-plates with oblique sulci, extending posterolaterally from teeth-base sulci, often long
- Median sulcus, extending posteriorly from junction of teeth-base sulci, weak 
- Main teeth on each side usually 5, sometimes 4, teeth-bases short
- Tooth process on trochanter of maxilliped large and with 1 (1-3, usually 2-3) teeth on mesal edge apically
- Tergites without supplementary longitudinal keels
- Pair of median sulci complete from tergite III, lateral margins starting on tergite 6-9
- Tergite 21 slightly wider than long, posterior edge strongly convex 
- Sternite 21 narrowing moderately, middle part of lateral edges practically straight, middle part of posterior edge strongly to weakly concave, sometimes straight, median depression varies from strong to weak or absent
- Legs with two bristles at base of claw short 
- Claw of legs 1-10 0.5-0.75X of distal tarsus
- Anal leg coxopleuron 1.5X length of sternite 21, porose area reaching posterior edge, 2 apex spines, 1 dorsal spine 
- Anal leg trochanter long, 4-8 spines