Wing and body size polymorphism in populations of the stonefly Arcynopteryx dichroa McL. (Plecoptera: Perlodidae) in the Ural Mountains, Russia

Figures & data

Fig. 1  Study sites in the Ural Mountains, Russia.

Table 1 Environmental parameters, body (BL), forewing (FL) and hindwing (HL) length in female and male Arcynopteryx dichroa from different localities in the Ural Mountains, Russia.

			Females				Males
Locality	T^a (°C)	Altitude m a.s.l.	N^b	BL (mm) x±se^c (min–max)	FL (mm) x±se (min–max)	HL (mm) x±se (min–max)	N	BL (mm) x±se (min–max)	FL (mm) x±se (min–max)	HL (mm) x±se (min–max)
Short-winged populations
Ozernoe Lake	9.0	850	38	13.20±0.24 (9.0–15.6)	3.97±0.16 (1.8–5.7)	3.38±0.11 (1.8–4.9)	62	11.50±0.11 (9.2–14.0)	1.85±0.03 (1.2–2.5)	1.50±0.02 (1.2–1.9)
Bolshaya Lagorta Lake	7.0	378	15	12.90±0.29 (11.0–15.2)	5.98±0.51 (2.5–10.0)	5.64±0.51 (1.7–8.4)	22	12.60±0.15 (11.4–14.0)	2.38±0.05 (2.0–2.8)	2.17±0.05 (1.7–2.5)
Long-winged populations
Lomes-vozh Brook	5.0	775	9	15.80±0.50 (13.2–18.2)	14.50±0.39 (12.7–16.0)	13.30±0.27 (11.6–14.2)	9	12.40±0.37 (10.2–13.8)	3.82±0.17 (3.0–4.5)	3.20±0.16 (2.5–4.2)
Balban-Ty Lake	12.6	600	4	15.00±0.61 (13.5–16.3)	10.30±0.91 (7.8–12.0)	9.40±0.51 (8.0–10.3)	–^d	–	–	–
Patok River	9.4	561	11	14.30±0.36 (12.8–16.3)	13.10±0.46 (11.0–15.7)	11.50±0.45 (9.1–14.0)	15	12.80±0.25 (10.6–14.8)	3.33±0.1 (2.6–4.0)	2.73±0.10 (2.0–3.4)
Shchugor River	4.3	167	13	16.80±0.45 (13.2–19.4)	–	–	8	13.40±0.47 (12.3–15.6)	–	–

^aTemperature of water during collection of imago (°C). ^bNumber of specimens. ^cMean±standard error. ^dNo data.

Fig. 2  The venation of forewings of different populations of Arcynopteryx dichroa in the Ural Mountains, Russia: (a) macropterous (from Lillehammer 1988), (b) brachypterous and (c) micropterous.

Fig. 3  Box and whisker plots of variability of body length among (a) females and (b) males of Arcynopteryx dichroa and latitude in the Ural Mountains, Russia.

Fig. 4  Forewing length of Arcynopteryx dichroa females versus altitude in the Ural Mountains, Russia.

Fig. 5  The relationship among (a) females and (b) males between body length of Arcynopteryx dichroa at different altitudes in the Ural Mountains, Russia.

Lillehammer A. Stoneflies (Plecoptera) of Fennoscandia and Denmark. Fauna Entomologica Scandinavica 21. 1988; Copenhagen: E.J. Brill/Scandinavian Science Press.

 Google Scholar