Description of the last instar larva of Cordulegaster vanbrinkae and emergence place from northern Iran (Odonata: Cordulegastridae) Author HoluŠa, Otakar text International Journal of Odonatology 2022 2022-06-22 25 72 79 https://doi.org/10.48156/1388.2022.1917175 journal article 310144 10.48156/1388.2022.1917175 5478100f-e5a3-4f1d-ad56-8332df31f98e 2159-6719 15554929

Table 1. Biometric data of larvae of Cordulegaster vanbrinkae (instar F-0). (L – prementum length, W+ – maximal width, W- – minimal width).

Feature		Range (mean, replicate)
Total length	♂ larvae	34.0–35.6 mm (x=34.9, n=6)
	♀ larvae	33.9–39.3 mm (x=36.5, n=8)
	♂ exuviae	37.1–43.2 mm (x=40.7, n=12)
	♀ exuviae	40.2–45.9 mm (x=43.8, n=13)
Head/prothorax	larvae	1.14–1.18 (x=1.16, n=14)
Antennae segment 1/4+5	larvae+exuviae	0.9–1.1 (x=0.96, n=25)
Prementum L/W+	larvae+exuviae	0.96–1.14 (x=1.08, n=36)
Prementum W+/W-	larvae+exuviae	2.25–3.36 (x=2.82, n=36)
Anal pyramid L/W	larvae+exuviae	0.91–1.27 (x=1.08, n=36)