Forelia larvae

Tuzovskij, Petr V., 2019, Larval morphology of the water mite Forelia brevipes (Neuman, 1880) (Acari: Hydrachnidia: Pionidae), Zootaxa 4550 (3), pp. 433-438 : 436

Key to Forelia larvae in Russia

1 Coxal plates III without tmas* ( Wainstein 1980)........................................................................................................... F. variegator

- Coxal plates III with tmas ................................................................................................................................................................. 2

2 II /III-Leg-4 with four heavy distal setae ( Figs14–15 ), III-Leg-3 with three heavy distal setae, III-Leg-4 with 11 simple setae ....... ............................................................................................................................................................................................. F. liliacea

- II/III-Leg-4 with three heavy setae, III-Leg-3 with two heavy distal setae, III-Leg-3 with two heavy distal setae, III-Leg-4 with 9 simple setae........................................................................................................................................................................................ 3

3 P-4 with two thin setae ( Fig. 8 ), tmas with short furca ( Fig. 2 ), dorsal plate large: L 260–270 µm, W 175–185 µm, II/III-Leg-5 long: L 70–75 µm and 76–80 µm, respectively .................................................................................................................. F. brevipes

- P-4 with three thin setae, tmas without furca, Fig. 17 , dorsal plate relatively small: L 230–240 µm, W 145–160 µm, II/III-Leg-5 comparatively short: L 65–70 µm and 65–75 µm, respectively ( Tuzovskij 1997).......................................................... F. samarica

Figures

FIGURES 14–15. Forelia liliacea, larva: 14, II-Leg-3–5; 15, III-Leg-3–5. Scale bar: 20 µm.

FIGURES 3–9. Forelia brevipes (Neuman, 1880), larva: 3-4, excretory pore plate; 5, capitulum, ventral view; 6, chelicera, dorsal view; 7, chela, lateral view; 8, pedipalp, lateral view; 9, leg I. Scale bars: 5–7, 9 = 20 µm.

FIGURES 1–2. Forelia brevipes (Neuman, 1880), larva: 1, dorsal view; 2, ventral view. Scale bar: 50 µm.

FIGURES 16–17. Forelia larvae, ventral view: 16, F. liliacea; 17, F. samarica. Scale bar: 50 µm.