Key to species of Pseudolycoriella

1 Gonostylus wide and spoon shaped with many fine spines in between short spine-like bristles on the inner side; without whiplash hairs. Mouth parts in both sexes slightly elongated............................. Psl. planiforceps (Steffan) (Fig. 8)

- Gonostylus not spoon shaped, with one or more apical/subapical spines and one or more distinct whiplash hairs; mouth parts not significantly elongated.............................................................................. 2

2 Ventral base of hypopygium with a basal lobe............................................................... 3

- Ventral base of hypopygium without a basal lobe, sometimes with strong hairs..................................... 5

3 Intergonocoxal lobe without bristles, covered with macrotrichia only........................ Psl. lobosa (Pettey) (Fig. 5)

- Intergonocoxal lobe with long bristles..................................................................... 4

4 Intergonocoxal lobe with long fine bristles; gonostylus with two short and dark spines........ Psl. subjucunda sp. n. (Fig. 9)

- Intergonocoxal lobe with broad hyaline bristles; gonostylus with more than two spines; spines long and hyaline...................................................................................... Psl. jucunda (Johannsen) (Fig. 4)

5 Gonocoxites densely covered with long and robust bristles on the ventral inner side, basally or apically................. 6

- Gonocoxites with short hairs on ventral inner side............................................................ 7

6 Long, robust bristles inserted basally at the inner margin of the gonocoxites; gonostylus elongated with two subapical spines............................................................................. Psl. basisetosa sp. n. (Fig. 1A)

- Long bristles inserted at the apical half of the inner margin only; gonostylus ovoid with three hyaline spines......................................................................................... Psl. longisetosa sp. n. (Fig. 1D)

7 Ventral base of hypopygium u-shaped; gonostylus bulbous, with two long spines of different lengths and a dense patch of short bristles in the middle of the medial margin....................................... Psl. trivialis (Johannsen) (Fig. 6C)

- Ventral base of hypopygium more or less v-shaped; gonostylus shaped differently.................................. 8

8 Inner ventral base of gonocoxites densely covered with short fine bristles.................. Psl. pollicis (Pettey) (Fig. 7A)

- Inner ventral base of gonocoxites uniformly haired........................................................... 9

9 Gonostylus pointed, with two long apical spines................................... Psl. parilis (Johannsen) (Fig. 7B)

- Gonostylus rounded at apex............................................................................ 10

10 Gonostylus with two short spines, not longer than apical bristles............................................... 11

- Gonostylus with two distinct spines, longer than apical bristles................................................. 12

11 Gonostylus with whiplash hair, much longer than both spines; tegmen with a thin thumb-like structure................................................................................................. Psl. flavipila sp. n. (Fig. 3A)

- Gonostylus with whiplash hair, just slightly longer than both spines; tegmen with a broad horseshoe-like inner structure.............................................................................. Psl. brevialata sp. n. (Figs. 2A, B)

12 Gonostylus broad-oval with three long hyaline spines and two equally long whiplash hairs; pleural sclerites and legs yellowish........................................................................ Psl. chlorothoracica sp. n. (Fig. 3E)

- Gonostylus elongated, not broad-oval, whiplash hair longer than three hyaline spines; pleural sclerites and legs dark brown............................................................................... Psl. nocturna sp. n. (Fig. 6A)