Diallactiini

Jaschhof, Mathias, 2016, A review of world Diallactiini (Diptera, Cecidomyiidae, Winnertziinae), with the description of six new genera and seventeen new species, Zootaxa 4127 (2), pp. 201-244 : 206

Extant Diallactiini , including new taxa

Key to genera (males)

1 Costa extends beyond R5. Flagellomeres 11....................................................... Sylvenomyia

- Costa merged with R5 ( Fig. 10D ). Flagellomeres 14, exceptionally 13........................................... 2

2 M1+2 present. R-m discrete............................................................................. 3

- M1+2 absent. R-m merged in btv ( Fig. 10D )................................................................ 4

3 M4 absent. Flagellomeres with crenulate whorls of sensory hairs........................................ Diallactia

- M4 present. Flagellomeres without crenulate whorls ( Fig. 21C ).......................................... Wyattella

4 Gonostylus normal-sized, single-lobed and with normal-sized apical tooth ( Fig. 4A )............................... 5

- Gonostylus variously modified ( Figs 3A , 11A , 15A , 17A , 18A )................................................ 9

5 Gonocoxae with dorsomedial process ( Fig. 20A )..................................................... Wahabia

- Gonocoxae without process............................................................................ 6

6 Legs bicolored, either banded or tarsi brighter than other segments. Palpus usually longer than head height. Mostly large spe- cies with body lengths> 2.5 mm ......................................................................... 7

- Legs unicolored. Palpi usually shorter than head height. Mostly small species with body lengths <2.5 mm .............. 8

7 Wing with dark spot on Rs and surrounding membrane ( Fig. 10D ), a similar spot often on CuA. Membrane often milky white (almost invisible in balsam-mounts). Legs usually conspicuously banded.................................. Haplusia

- Wing without spots, but Rs usually darkly tinted ( Fig. 14D ). Membrane brownish to grayish. Legs never banded................................................................................................... Johnsonomyia

8 Tegmen pointed apically..................................................................... Ferovisenda

- Tegmen blunt-ended, concave or rounded apically............................................... Gynapteromyia

9 Parameres separated from each other, forming a pair of excessively long sticks ( Fig. 11B )................... Japoplusia

- Parameres fused to form a tegmen ( Fig. 13A )............................................................. 10

10 Gonostylus single-lobed, either miniaturized or enlarged.................................................... 11

- Gonostylus bilobed, rather normal-sized................................................................. 12

11 Gonostylus tiny, embedded in large gonocoxal lobe ( Fig. 18A )........................................ Mikrostyles

- Gonostylus large (including an excessively long curved tooth), inserted posterior to gonocoxa ( Fig. 17A )...... Makrostyles

12 Ejaculatory apodeme very short, rod-like ( Fig. 15A )................................................ Loboplusia

- Ejaculatory apodeme excessively large, strongly broadened apically ( Fig. 3A ).......................... Bruneiplusia

Figures

FIGURE 10 A – D. Haplusia afrotropica, male. A: Fourth flagellomere, lateral (paratype). B: Genitalia, ventral (holotype). C: Palpus, vestiture omitted except for second segment, lateral (holotype). D: Wing (paratype). Scales for A – C, 0.05 mm, for D, 1.0 mm. Btv = basal transverse vein.

FIGURE 21 A – F. Wyattella japonica. A: Male genitalia, ventral (holotype). B: Apex of male ninth tergite, dorsal (paratype). C: Male fourth flagellomere, lateral (holotype). D: Female fourth flagellomere, lateral (paratype). E: Palpus, vestiture omitted except for second segment, lateral (paratype). F: Ovipositor, lateral (paratype). Scales 0.05 mm. Bc = basicercus, dc = disticercus, gx = gonocoxa, sg = segment, st = sternite, tg = tergite.

FIGURE 4 A – F. Gynapteromyia brevipalpis (A – D) and Gynapteromyia heteroptera (E – F), males (Sweden). A: Genitalia, ventral. B: Palpus, lateral. C: Palpus, lateral, variation. D: Fourth flagellomere, lateral. E: Palpus, lateral. F: Palpus, lateral, variation. Scales 0.05 mm.

FIGURE 3 A – C. Bruneiplusia kaspraki (holotype male). A: Genitalia, ventral. B: Fourth flagellomere, lateral. C: Wing. Scales for A – B, 0.05 mm, for C, 1.0 mm.

FIGURE 11 A – D. Japoplusia honshuensis (holotype male). A: Gonostylus, ventral. B: Genitalia, ventral. C: Fourth flagellomere, lateral. D: Wing. Scales for A – C, 0.05 mm, for D, 1.0 mm.

FIGURE 15 A – E. Loboplusia zurqui, male. A: Genitalia, ventral (holotype). B: Fourth flagellomere, lateral (holotype). C: Scutum, showing prescutellar window, dorsal (paratype). D: Wing (holotype). E: Apex of third tarsomere of midleg with fringed setae, lateral (paratype). Scales for A – B, E, 0.05 mm, for C, 0.1 mm, for D, 1.0 mm.

FIGURE 17 A – C. Makrostyles terrifica, male. A: Genitalia, ventral (holotype). B: Wing (paratype). C: Fourth flagellomere, lateral (paratype). Scales for A, C, 0.05 mm, for B, 1.0 mm.

FIGURE 18 A – E. Mikrostyles angustilobata (holotype male). A: Genitalia, ventral. B: Outline of genitalia, ventral. C: Palpus and labella, lateral. D: Fourth flagellomere, lateral. E: Wing. Scales for A – D, 0.05, for E, 0.5 mm.

FIGURE 20 A – B. Wahabia mantici (holotype male). A: Genitalia, left side: ventral, right side: dorsal. B: Tegmen and ejaculatory apodeme, ventral. Scales 0.05 mm.

FIGURE 14 A – D. Johnsonomyia serrata (holotype male). A: Genitalia, ventral. B: Palpus, vestiture omitted except for second segment, lateral. C: Fourth flagellomere, lateral. D: Wing. Scales for A – C, 0.05 mm, for D, 1.0 mm.

FIGURE 13 A – C. Johnsonomyia scabra, male. A: Genitalia, ventral (holotype). B: Palpus, vestiture omitted except for second segment, lateral (paratype). C: Fourth flagellomere, lateral (paratype). Scales = 0.05 mm. Ant pr = anterior process (of gonocoxal apodeme), gcx em = gonocoxal emargination, tgm = tegmen, tr sut = transverse suture.