Pseudolycoriella, Menzel & Mohrig, 1998

Mohrig, Werner & Kauschke, Ellen, 2019, New Black Fungus Gnats (Diptera, Sciaridae) of North America. Part V. Genera Pseudolycoriella Menzel & Mohrig and Phytosciara Frey, Zootaxa 4543 (2), pp. 261-283 : 263

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 )

Figures

FIGURE 1. A–C. Pseudolycoriella basisetosa sp. n. Holotype. A. Gonostylus, ventral view. B. Basal part of hypopygium. C. Wing. D–E. Pseudolycoriella longisetosa sp. n. D. Part of hypopygium. E. Apex of fore tibia.

FIGURE 2. Pseudolycoriella brevialata sp. n. Holotype. A. Gonostylus, ventral view. B. Basal part of hypopygium. C. Antennal flagellomeres 3–4. D. Apex of fore tibia. E. Wings.

FIGURE 3. A–D. Pseudolycoriella flavipila sp. n. Holotype. A. Hypopygium. B. Antennal flagellomeres 3–4. C. Palpus. D. Apex of fore tibia. E–G. Pseudolycoriella chlorothoracica sp. n. Holotype. E. Gonostylus, ventral view (3 rd spine hidden). F. Scape, pedicel and antennal flagellomeres 1–4. G. Apex of fore tibia.

FIGURE 4. Pseudolycoriella jucunda (Johannsen). A. Part of hypopygium (ventral and dorsal side combined). B. Head with antennal flagellomeres 1–4. C. Gonostylus, ventral view (drawing 200 x).

FIGURE 5. Pseudolycoriella lobosa (Pettey). A. Part of hypopygium. B. 4 th flagellomere. C. Apex of fore tibia. D. Wing and haltere.

FIGURE 6. A–B. Pseudolycoriella nocturna sp. n. Holotype. A. Part of hypopygium (tegmen deformed). B. Apex of fore tibia. C–D. Pseudolycoriella trivialis (Johannsen). Specimen from Canada. C. Part of hypopygium. D. Antennal flagellomeres 1–4.

FIGURE 7. Pseudolycoriella pollicis (Pettey). A. Part of hypopygium. B. Pseudolycoriella parilis (Johannsen). Hypopygium.

FIGURE 8. Pseudolycoriella planiforceps (Steffan). A. Hypopygium. B. Head. C. Apex of fore tibia. D. Gonostylus, inner side in frontal view (200 x, after Mohrig et al. 2013, fig. 47 b).

FIGURE 9. Pseudolycoriella subjucunda sp. n. A. Paratype. Part of hypopygium, ventral view (specimen from Alabama). B– D. Holotype (from Pennsylvania). B. Basal lobe of hypopygium. C. Antennal flagellomeres 2–4. D. Wing.