Swezeyana magnaccai, Percy, Diana M., 2018

Percy, Diana M., 2018, Revision of the Hawaiian psyllid genus Swezeyana, with descriptions of seven new species (Hemiptera, Psylloidea, Triozidae), ZooKeys 758, pp. 75-113 : 75

Swezeyana magnaccai sp. n. Figures 1F, 11

Diagnosis.

Small, red- to yellow-brown species, with fore wing membrane patterned, antennae and genal processes medium long, and paramere short.

Description.

Adult. General body colour orange-red to yellow-brown, last 2-3 antennal segments darker brown. Fore wing patterned with irregular clouds of orange-brown pigmentation, darker patches indicate position of cross pseudoveins, intersections of veins and wing margin, as well as 1-2 darker patches on the dorsal claval wing margin, and a more or less distinct patch on vein R+M+Cu1 just basal to vein trifurcation, unpigmented areas surround the marginal clusters of radular spines (Figs 1F, 11M). Fore wing apex bluntly acute; pseudopterostigma relatively long (Fig. 11J, L), 2-3 cross pseudoveins in cell r1 (Fig. 11L); surface spinules densely distributed in all cells; medium long setae on ventral margin and medium short to short setae on veins and dorsal margin. Antennae medium long (ratio AL:HW 1.41) (Fig. 11B); genal processes medium long (GP <0.35 mm, ratio HW:GP <1.65) and not or only slightly upturned at apices (Fig. 11 A–B); medium short to short setae on vertex and thorax. Meracanthus extremely small to almost absent, genual spine reduced or absent (Fig. 11 E–F). Male terminalia (Fig. 11 H–I): paramere short (ratio PL:HW <0.30), tapering to apex with two short stout setae; distal aedeagus segment long relative to paramere (ratio PL:AEL <1.10), apex developed into a large rounded hook with acute apex.

Egg. Unknown.

Immature. Unknown.

Host plant.

Planchonella sandwicensis .

Distribution.

Oahu. Only known from the Waianae Mountains.

Etymology.

Named for Karl Magnacca, a talented biologist who contributed several specimens for this study (noun in the genitive case).

Comments.

Currently only known from males, it may belong in the reticulata species group based on fore wing characters and paramere shape, but is currently unplaced.

Material examined.

Holotype male (slide mounted), Mokuleia Forest Reserve, Pahole, N Waianae Mnts, Oahu, USA, N21.53208, W-158.1786, ex Planchonella sandwicensis , 6 July 2014, “Hi74-14” D. Percy leg. (BMNH). Paratypes (slide mounted) 2m, as for holotype (BMNH). Other material: 1m, Puu Hapapa, Central Waianae Mnts, Oahu, USA, N21.4666, W-158.1029, ex Planchonella sandwicensis , 17 May 2014, “KM14-14” K. Magnacca leg. (BMNH).

Gene sequences.

KY294144 (COI) KY294628 (cytB) (Hi74-14) [previously submitted to GenBank as Swezeyana reticulata Caldwell, 1940 (in Percy 2017a)]; KY294145 (COI) KY294629 (cytB) (KM15-14) [previously submitted to GenBank as Swezeyana reticulata Caldwell, 1940 (in Percy 2017a)].