Casuarinicola, a new genus of jumping plant lice (Hemiptera: Triozidae) from Casuarina (Casuarinaceae) Author Taylor, Gary S. Author Austin, Andy D. Author Jennings, John T. Author Purcell, Matthew F. Author Wheeler, Gregory S. text Zootaxa 2010 2601 1 27 journal article 10.5281/zenodo.197605 37defae7-75b5-41e0-93ff-11f5fbdfd36a 1175-5326 197605 Casuarinicola novacaledonica Taylor , sp. nov. Figs 30–36 , 44–46 , Tables 1–8 Types . NEW CALEDONIA : Holotype : 1 ɗ (slide) Tontouta River, 21°58.729’S , 166°11.861’E , JTJ, 28.xi.2009 , Casuarina collina , ABCL 2009 570 (MNHN). Paratypes : 3 Ψ, 1 parasitised nymph (slide) same data as holotype (MNHN); 3 Ψ, 2 nymphs (slide) Rue du Fare, Ouen Toro, 22°18.340’S , 166°27.033’E , JTJ, 27.xi.2009 , C. collina , ABCL 2009 568 (WINC); 1 Ψ (spirit) nr Sarramea, 21°39.506’S , 165°49.672’E , JTJ, 28.xi.2009 , C. collina , ABCL 2009 572 (WINC). Description. Adult. Colour ( Figs 30–35 ): Male: general colour pale ochraceous with light orange-brown markings. Vertex with a pale brown spot in vicinity of fovea; genal processes pale; antennal segments 1–2 ochraceous to brown; segment 3 yellow-brown; segments 4–10 brown to dark brown; pronotum with a pair of pale brown submedial spots; mesopraescutum with a pair of broad triangular light orange-brown markings anteriorly; mesoscutum with a pair of light orange-brown longitudinal submedial stripes; mesoscutellum pale ochraceous; fore wing clear; legs pale ochraceous with dorsal brown longitudinal infuscation; tarsi brown to dark brown; abdominal tergites pale brown; proctiger pale brown; subgenital plate ochraceous; parameres brown to dark brown. Female: as for male, except proctiger pale ochraceous merging to dark brown to black around circum-anal pore ring and at apex; subgenital plate pale ochraceous with brown towards apex. FIGURES 30–36. Casuarinicola novacaledonica sp. nov. (30), habitus, female (dorsal aspect); (31), habitus, male (dorsal aspect); (32), habitus female (lateral aspect); (33), habitus male (lateral aspect); (34), fore wing, female; (35), fore wing, male; (36), head (dorsal aspect). Scale = 0.5 mm. Structure: measurements and ratios as in Tables 1–5. Antenna ( Fig. 36 ) short, 1.09–1.33 times width of head; genal processes short, conical 0.39–0.48 times length of vertex; length of vertex 0.40–0.46 times width of head; anterior margin of vertex delineated by moderate ridge, vertex with weakly defined medial suture and fovea; pronotum with moderate anterior medial node; fore wing elongate-oval with broadly rounded apex; Rs short, terminating well short of wing apex; vein M1+2 terminating near wing apex; cell m1 short, broad, m1 cell value 1.4–1.8; cell cu1 elongate triangular, cu1 cell value 0.7–1.0; male terminalia as in Figs 44–45 ; proctiger short with broad lateral expansions; parameres thin elongate, curved inward towards apex [note: distal segment of aedeagus appears twisted in Fig. 44 , but this is an artefact of the slide preparation of the only male specimen]; female terminalia as in Fig. 46 ; proctiger short, with dorsal profile flat, little rounded from lateral aspect, with broadly rounded flange-shaped lateral lobes. Final instar nymph. As for generic description (see above). Measurements and ratios as in Tables 6–7 . Etymology. Named after New Caledonia where the species was collected. Distribution. Recorded from southern New Caledonia . Host plant. Recorded from C. collina Poisson ex Pancher & Sebert. Casuarina collina (river sheoak) is the most common Casuarinaceae , and the only endemic species of Casuarina from New Caledonia . It occurs as a tall tree along watercourses, and is abundant on a wide range of mineral-deficient soils, particularly on veins of serpentinite in metamorphic rock or on calcareous soils up to an altitude of about 350 m . It becomes the dominant species in disturbed lands due to its rapid growth, ability to sucker and resistance to fire, thereby having a high potential for rehabilitation of degraded sites ( Jaffré et al . 1994 ). Comments. This is the only species of Casuarinicola in which both females and males have clear wings, and the only one recorded from New Caledonia . Casuarina novacaledonica sp. nov. has short conical genal processes (shared with C. australis sp. nov. , C. nigrimaculatus sp. nov. and C. mucronalatus sp. nov. , but differs from C. warrigalensis sp. nov. in which they are considerably shorter); the pronotum has a moderate median lobe (shared with C. nigrimaculatus sp. nov. and C. mucronalatus sp. nov. , but is more prominent in C. australis sp. nov. and reduced in C. warrigalensis sp. nov. ); the fore wing is elongate oval with a rounded apex, cell m1 is short and broad and cell cu1 is narrow and high, each with a low cell value (shared with C. australis sp. nov. , C. nigrimaculatus sp. nov. and C. warrigalensis sp. nov. , but differs from C. mucronalatus sp. nov. in which the fore wing has a subangular apex, cell m1 is long and narrow and cell cu1 is short and broad, each with a high cell value); the hind tibia is short with a low length to head width ratio (differs from C. australis sp. nov. , C. nigrimaculatus sp. nov. , C. mucronalatus sp. nov. and C. warrigalensis sp. nov. , with longer hind tibia and a higher tibia length to head width ratio). It is the only species known from C. collina .