Pseudolycoriella, Menzel & Mohrig, 1998

Köhler, Arne, 2019, The genus Pseudolycoriella Menzel & Mohrig, 1998 (Diptera, Sciaridae) in New Zealand, Zootaxa 4707 (1), pp. 1-69 : 6

Key to the males of New Zealand Pseudolycoriella species

1. Gonostylus with one or two obvious spines.................................................. Psl. bruckii group, 2

- Gonostylus with more than two small spines....................................... Psl. macrotegmenta complex, 26

2. Gonostylus with two spines............................................................................. 3

- Gonostylus with one spine............................................................................. 11

3. Wing length greater than 2.4 mm; length of gonocoxites more than 200 µm ....................................... 4

- Wing length less than 2.4 mm; length of gonocoxites 200 µm or less............................................. 5

4. Base of the ejaculatory apodeme horseshoe-shaped...................................... Psl. zealandica (Edwards)

- Base of the ejaculatory apodeme elongate and slender......................................... Psl. aotearoa sp. n.

5. Fourth flagellomere less than twice as long as wide.......................................... Psl. cavatica (Skuse)

- Fourth flagellomere more than twice as long as wide....................................... Psl. bispina complex, 6

6. Fourth flagellomere less than three times as long as wide, with dense setae ( Fig. 5 ).................... Psl. puhihi sp. n.

- Fourth flagellomere at least three times as long as wide, with sparsely scattered setae (e.g. Fig. 4 )...................... 7

7. Wings slender, anal area weakly developed................................................................. 8

- Wings of normal shape, anal area well developed............................................................ 9

8. Wing length less than 2.2 mm; c/w ratio greater than 0.65.......................................... Psl. orite sp. n.

- Wing length 2.2 mm or more; c/w ratio less than 0.65........................................... Psl. porehu sp. n.

9. Base of the ejaculatory apodeme lyre-shaped; apex of tegmen surrounded by a sclerotized margin ( Figs 14 & 18 ); body length more than 1.8 mm, gonocoxites of normal length........................................................... 10

- Base of the ejaculatory apodeme u-shaped; apex of tegmen with membranous area ( Fig. 15 ), body length less than 1.8 mm, gonocoxites short........................................................................... Psl. teo sp. n.

10. Apex of R 5 with macrotrichia only on ventral side; hind tibia with ten or more robust bristles in a longitudinal row............................................................................................. Psl. bispina Mohrig

- Apex of R 5 with macrotrichia on both sides; hind tibia with less than ten robust bristles in a longitudinal row.................................................................................................. Psl. mahanga sp. n.

11. Fourth flagellomere less than twice as long as wide; tegmen apically roundish ( Fig. 11 )............... Psl. kaikoura sp. n.

- Fourth flagellomere more than twice as long as wide; tegmen with a pronounced apex (at in Fig. 22 )..................................................................................................... Psl. jejuna complex, 12

12. Scape and pedicel bright yellowish, contrasting strongly with the brown flagellomeres............................. 13

Figures

FIGURES 1–9. Various body parts of Pseudolycoriella spp., in lateral view. 1. Pseudolycoriella dagae sp. n., fourth flagellomere. 2. Pseudolycoriella jejunella sp. n., fourth flagellomere. 3. Pseudolycoriella aotearoa sp. n., fourth flagellomere. 4. Pseudolycoriella bispina Mohrig, fourth flagellomere. 5. Pseudolycoriella puhihi sp. n., fourth flagellomere. 6. Pseudolycoriella jejunella sp. n., palp. 7. Pseudolycoriella robustotegmenta sp. n., head. 8. Pseudolycoriella jejunella sp. n., tibial organ. 9. Pseudolycoriella hauta sp. n., wing. Abbreviations: aa = anal area; bM = base of the medial vein; c = distance between intersection of vein R5 and radial vein and the end of costal vein; CuA1/CuA2 = first and second branch of the anterior branch of the cubital vein; M1/M2 = first and second branch of the medial vein (“M-fork”); R = radial vein; R1/R5 = first and fifth branch of the radial vein; r-m = crossvein between radial and median veins; w = distance between intersection of vein R5 and radial vein and intersection of vein M1 and wing margin.

FIGURES 14–19. Pseudolycoriella bispina complex, hypopygia. 14. Pseudolycoriella bispina Mohrig. 15. Pseudolycoriella teo sp. n. 16. Pseudolycoriella puhihi sp. n. 17. Pseudolycoriella orite sp. n. 18. Pseudolycoriella mahanga sp. n. 19. Pseudolycoriella porehu sp. n. Abbreviation: ti = insertion of the tendon of the gonostylus adductor.

FIGURES 10–11. Pseudolycoriella bruckii group, hypopygia. 10. Pseudolycoriella cavatica (Skuse). 11. Pseudolycoriella kaikoura sp. n. Abbreviations: aga = anterior portion of gonocoxal apodeme; pa = parameral apodeme; pga = posterior portion of gonocoxal apodeme.

FIGURES 20–24. Pseudolycoriella jejuna complex, Pseudolycoriella tewaipounamu sp. n., details of hypopygium. 20. Hypopygium, ventral. 21. Hypopygium, dorsal, tergite IX removed. 22. Hypopygium, ventral. 23. Tegmen, ventral. 24. Tegmen, dorsal. Abbreviations: ac = apical cavity; at = apex of tegmen; be = base of ejaculatory apodeme; be* = base of ejaculatory apodeme covered by the membranous area; dc = dorsal carina; df = dorsal fold; ea = ejaculatory apodeme; gc = gonocoxite; gs = gonostylus; ll = lateral lobe; ma = membranous area; mf = median fold; pa = parameral apodeme; pa* = parameral apodeme covered by integument; sp = gonostylar spine; wh = whip-lash hair.