Casuarinaceae

Taylor, Gary S., Jennings, John T., Purcell, Matthew F. & Austin, Andy D., 2011, A new genus and ten new species of jumping plant lice (Hemiptera: Triozidae) from Allocasuarina (Casuarinaceae) in Australia, Zootaxa 3009, pp. 1-45 : 4-5

Key to the triozid fauna of Casuarinaceae

1. Fore wings of female usually with dark markings [clear in species from New Caledonia]; fore wings of male clear; anterior margin of vertex not overhanging genal processes; genal processes short conical, little-declined to longitudinal axis of body and visible from above; female proctiger short with a pair of lateral lobes; male parameres short, narrow, little curved to apex; nymphs broadly ovate, weakly sclerotised, typically ‘triozine’ in type; host: Casuarina ................................................................................................ Casuarinicola Taylor [see Taylor et al. 2010]

- Fore wings of female and male clear; anterior margin of vertex overhanging genal processes; genal processes moderate in length, produced ventrad to longitudinal axis of body; female proctiger short with rounded apex or with apical upturned process or hook; male parameres short, strongly curved to apex, long and thin ( Figs 94–95, 98 ) to short and wide ( Figs 131, 134 ); nymphs scale-like, usually strongly to moderately sclerotised; host: Allocasuarina .................................. 2

2. Rhinaria on antennal segments 4, 6 and 9; hind tibia without apical spurs, at most with a corona of setae; female proctiger short, with apex rounded (without an apical upturned process or hook) ( Figs 18 , 39 )… [ Aacanthocnema ]3

- Rhinaria on antennal segments 4, 6, 8 and 9; hind tibia with 2 inner and 1 outer apical spurs; female proctiger short, with an apical upturned process ( Figs 99, 102 ) or prominent hook ( Figs 96 , 135 ).............. [ Acanthocasuarina gen. nov.]....8

3. Fore wings with brown infuscation along veins R+M+Cu, M, m1+2, m3+4, Cu, Cu1a, Cu1b and distal portion of Rs ( Figs 3 , 10–11 ).............................................................................................. 4

- Fore wings without brown infuscation (e.g., Figs 23–24 ), or at most with brown infuscation restricted to portion of vein Cu1a ( Figs 47–48 )......................................................................................... 5

4. Large species (for all parameters measured in Tables 1–3); antennal length proportional to head width long, AL:HW>1.5; fore wings long, WL:WW>3.0; host: Allocasuarina tolulosa ; distribution: coastal, subcoastal eastern Australia.......................................................................................... Aa. burckhardti Taylor , sp. nov.

- Smaller species (for all parameters measured in Tables 1–3); antennae shorter, AL:HW <1.5; fore wings short, WL:WW <3.0; host: Allocasuarina distyla ; distribution: coastal, subcoastal south-eastern Australia, Tasmania.... Aa. casuarinae (Froggatt)

5. Head narrow, <0.70 mm, distinctly narrower than mesoscutum; male parameres strongly curved inward with flattened, bladelike apices ( Fig. 64 ); host: A. torulosa ; distribution: coastal, subcoastal eastern Australia...... Aa. torulosae Taylor sp. nov.

- Head moderate to wide,> 0.70 mm, equal to or wider than mesonotum; male parameres strongly curved inward with rounded, horn-shaped apices ( Figs 38, 41 , 61 )...................................................................... 6

6. Head very wide,> 0.80 mm; vertex very short and wide (VL:HW <0.35; AL:HW <1.20); anterior edge of vertex rather flat when viewed from dorsal aspect ( Figs 29–30 ); host: A. huegeliana ; distribution: subcoastal, inland Western Australia................................................................................. Aa. huegelianae Taylor sp. nov.

- Head moderately wide, ≤ 0.80 mm; vertex long and narrow (VL:HW>0.35; AL:HW>1.20); anterior edge of vertex distinctly curved when viewed from dorsal aspect ( Figs 19–20 , 43–44 , 51–52 )............................................. 7

7. Basal half of adult fore wing vein Cu1a with brown infuscation ( Figs 47–48 ); male parameres with basal lobe ( Fig. 61 ); host: A. luehmannii ; distribution: inland eastern Australia.................................. Aa. luehmannii Taylor sp. nov.

- Basal half of adult fore wing vein Cu1a without infuscation; basal portion of male parameres more or less parallel-sided when viewed from lateral aspect, without basal swelling ( Fig. 38 ); host: A. verticillata ; distribution: southern Australia, Tasmania.................................................................................... Aa. dobsoni (Froggatt)

8. Vertex short and wide (VL:VW <0.60) (Table 4)............................................................ 9

-. Vertex moderately long and wide (VL:VW>0.65).......................................................... 10

9. Male terminalia as in Fig. 93 ; male parameres long, thin, 0.25–0.27 mm ( Figs 94–95 ); dorso-posterior margin of female proctiger angled when viewed from lateral aspect; proctiger with a prominent sharply-upturned apical hook ( Fig. 96 ); host: A. acutivalvis ; distribution: subcoastal, inland Western Australia................................... Ac. acutivalvis sp. nov.

- Male terminalia as in Fig. 97 ; male parameres moderately long, thin, 0.23–0.25 mm ( Fig. 98 ); dorso-posterior margin of female proctiger evenly curved when viewed from lateral aspect; proctiger with less prominent upturned apical process ( Fig. 99 ); host: A. campestris ; distribution: subcoastal, inland Western Australia...................... Ac. campestris sp. nov.

10. Cu1 cell value <1.00 ( Table 5).......................................................................... 11

- Cu1 cell value>1.15.................................................................................. 12

11. Male parameres short, parallel-sided when viewed from lateral aspect ( Fig. 131 ); dorso-posterior margin of female proctiger moderately curved when viewed from lateral aspect; proctiger with a less prominent upturned apical process ( Fig. 132 ); host: A. (?) littoralis ; distribution: Tasmania.................................................... Ac. tasmanica sp. nov.

- Male parameres short, with prominent posterior lobe when viewed from lateral aspect, ( Fig. 134 ); dorso-posterior margin of female proctiger angled when viewed from lateral aspect; proctiger with a prominent sharply-upturned apical hook ( Fig. 135 ); host: A. verticillata ; distribution: southern Australia, Tasmania.............................. Ac. verticillatae sp. nov.

12. Male parameres moderately long, pyriform, 0.18–0.21 mm ( Fig. 101 ); dorso-posterior margin of female proctiger evenly curved to apex when viewed from lateral aspect ( Fig. 102 ); host: A. diminuta ; distribution: central New South Wales.......................................................................................... Ac. diminutae sp. nov.

- Male parameres moderately long, thin, 0.21–0.23 mm ( Fig. 128 ); lateral profile of proctiger rather flat dorsally, angling more abruptly to apex when viewed from lateral aspect ( Fig. 129 ); host: A. muelleriana ; distribution: southern South Australia.................................................................................... Ac. muellerianae sp. nov.

Figures

FIGURES 93 – 102. Acanthocasuarina acutivalvis sp. nov., Ac. campestris sp. nov., and Ac. diminutae sp. nov.: Ac. acutivalvis: (93), male terminalia (lateral aspect); (94), paramere (inner face, lateral aspect); (95), paramere (dorsal aspect); (96), female terminalia (lateral aspect); Ac. campestris: (97), male terminalia (lateral aspect); (98), paramere (inner face, lateral aspect); (99), female terminalia; Ac. diminutae: (100), male terminalia (lateral aspect); (101), paramere (inner face, lateral aspect); (102), female terminalia (lateral aspect). Scale = 0.2 mm.

FIGURES 127 – 135. Acanthocasuarina muellerianae sp. nov., Ac. tasmanica sp. nov. and Ac. verticillatae sp. nov.: Ac. muellerianae: (127), male terminalia (lateral aspect); (128), paramere (inner face, lateral aspect); (129), female terminalia (lateral aspect); Ac. tasmanica: (130), male terminalia (lateral aspect); (131), paramere (inner face, lateral aspect); (132), female terminalia; Ac. verticillatae: (133), male terminalia (lateral aspect); (134), paramere (inner face, lateral aspect); (135), female terminalia (lateral aspect). Scale = 0.2 mm.

FIGURES 14 – 18. Aacanthocnema burckhardti sp. nov. and Aa. casuarinae (Froggatt): Aa. burckhardti: (14), male terminalia (lateral aspect); (15), paramere (inner face, lateral aspect); Aa. casuarinae: (16), male terminalia (lateral aspect); (17), paramere (inner face, lateral aspect); (18), female terminalia (lateral aspect). Scale = 0.2 mm.

FIGURES 37 – 42. Aacanthocnema dobsoni (Froggatt) and Aa. huegelianae sp. nov.: Aa. dobsoni: (37), male terminalia (lateral aspect); (38), paramere (inner face, lateral aspect); (39), female terminalia (lateral aspect); Aa. huegelianae: (40), male terminalia (lateral aspect); (41), paramere (inner face, lateral aspect); (42), female terminalia (lateral aspect). Scale = 0.2 mm.

FIGURES 1 – 5. Aacanthocnema burckhardti sp. nov.: (1), habitus, male (dorsal aspect); (2), habitus, male (lateral aspect); (3), fore wing, male; (4), head, male (dorsal aspect, dried); (5), head, male (dorsal aspect, slide). Scale = 0.5 mm.

FIGURES 6 – 13. Aacanthocnema casuarinae (Froggatt): (6), habitus, male (dorsal aspect); (7), habitus, female (dorsal aspect); (8), habitus, male (lateral aspect); (9), habitus, female (lateral aspect); (10), fore wing, male; (11), fore wing, female; (12), head (dorsal aspect); (13), nymph (dried). Scale = 0.5 mm.

FIGURES 19 – 28. Aacanthocnema dobsoni (Froggatt): (19), habitus, male (dorsal aspect); (20), habitus, female (dorsal aspect); (21), habitus, male (lateral aspect); (22), habitus, female (lateral aspect); (23), fore wing, male; (24), fore wing, female; (25), head (dorsal aspect); (26), nymph (dorsal aspect); (27), nymphal exuvium (dorsum, dorsal aspect) (28), nymphal exuvium (ventrum, ventral aspect) [note: dorsum and ventrum separated]. Scale = 0.5 mm.

FIGURES 43 – 50. Aacanthocnema luehmannii sp. nov.: (43), habitus, male (dorsal aspect); (44), habitus, female (dorsal aspect); (45), habitus male (lateral aspect); (46), habitus female (lateral aspect); (47), fore wing, male; (48), fore wing, female; (49), head, male (dorsal aspect); (50), head, female (dorsal aspect). Scale = 0.5 mm.

FIGURES 60 – 65. Aacanthocnema luehmannii sp. nov. and Aa. torulosae sp. nov.: Aa. luehmannii: (60), male terminalia (lateral aspect); (61), paramere (inner face, lateral aspect); (62), female terminalia (lateral aspect); Aa. torulosae: (63), male terminalia (lateral aspect); (64), paramere (inner face, lateral aspect); (65), female terminalia (lateral aspect). Scale = 0.2 mm.

FIGURES 29 – 36. Aacanthocnema huegelianae sp. nov.: (29), habitus, male (dorsal aspect); (30), habitus, female (dorsal aspect); (31), habitus male (lateral aspect); (32), habitus female (lateral aspect); (33), fore wing, male; (34), fore wing, female; (35), head (dorsal aspect); (36), nymph (dorsal aspect). Scale = 0.5 mm.

FIGURES 51 – 59. Aacanthocnema torulosae sp. nov.: (51), habitus, male (dorsal aspect); (52), habitus, female (dorsal aspect); (53), habitus male (lateral aspect); (54), habitus female (lateral aspect); (55), fore wing, male; (56), fore wing, female; (57), head, female (dorsal aspect); (58), nymph (dorsal aspect); (59), nymph (lateral aspect). Scale = 0.5 mm.