Jumping plant-lice of Socotra Island (Hemiptera: Psylloidea) Author Malenovský, Igor Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, CZ- 611 37 Brno, Czech Republic & Department of Entomology, Moravian Museum, Hviezdoslavova 29 a, CZ- 627 00 Brno, Czech Republic malenovsky@sci.muni.cz & imalenovsky@mzm.cz Author Burckhardt, Daniel Naturhistorisches Museum, Augustinergasse 2, CH- 4001 Basel, Switzerland daniel.burckhardt@bs.ch text Acta Entomologica Musei Nationalis Pragae 2014 2014-12-30 54 23 61 journal article 20299 10.5281/zenodo.5314350 8839e56a-8836-4002-8a03-6fd4ee00cb99 0374-1036 5314350 44343D04-2985-45F4-BA26-4F5C3B481BDAD Diaphorina elegans Burckhardt & Mifsud, 1998 ( Figs 39–43 , 49–55 ) Diaphorina elegans Burckhardt & Mifsud, 1998: 26 ; BURCKHARDT & HARTEN (2006) : 204 . Type material examined. HOLOTYPE ♀ ( MHNG , dry-mounted): Yemen , Socotra , Noged , 16.iv.1993 , on Suaeda sp. , A. van Harten leg. PARATYPE : 1 ♀ , same data as holotype but Noged to Hadiboh ( MHNG , slide-mounted). Additional material examined. 12 ♂♂ 16 ♀♀ , north-eastern Socotra , Homhil protected area , 12°34′30″N 54°18′30″E , 435 m , 11.vi.2012 , open dry woodland with Boswellia elongata and Dracaena cinnabari trees , on Lycium sokotranum , I. Malenovský, P. Kment & J. Bezděk leg.; 6 ♂♂ 6 ♀♀ , north-eastern Socotra , Kazazhan area, 12°33′48″N 54°19′48″E , 540 m , 10.vi.2012 , dry shrubland , on Lycium sokotranum , I. Malenovský leg.; 1 ♂ , central Socotra , Dixam plateau , wadi Zerig , 12°29′36″N 53°59′30″E , 655 m , 13.–14.vi.2012 , open Dracaena cinnabari woodland , I. Malenovský leg.; 5 ♂♂ 4 ♀♀ , southern Socotra , northern edge of Noged plain , Deiqab cave entrance environs , 12°23′03″N 54°00′56″E , 115 m , 12.vi.2012 , Croton socotranus and Jatropha unicostata shrubland , on Lycium sokotranum , I. Malenovský leg.( MMBC , NHMB , NMPC ; dry- and slide-mounted and preserved in alcohol). Description. Adult female was described by BURCKHARDT & MIFSUD (1998) . Here we provide description also for the male: Similar in coloration and structure to female. Male subgenital plate with slightly sinuate dorsal margin and few sparse, moderately long setae posteroventrally ( Fig. 49 ). Male proctiger relatively broad, with well-developed, broadly rounded posterior lobes ( Fig. 49 ). Paramere, in lateral view, slightly clavate with apex slightly bent posteriorly; apex broadly rounded, bearing a small tooth on inner side; inner face covered with numerous long unsclerotised setae ( Fig. 50 ). Distal segment of aedeagus with a simple, obovate apical dilation, ductus ejaculatorius short and sinuate ( Fig. 51 ). Measurements (in mm). Males (n = 2): HW 0.43, AL 0.35–0.37, WL 1.46–1.51, WW 0.63–0.72, TL 0.38–0.41, MPL 0.24–0.25, PL 0.18, AEL 0.14. Females (n = 3, including values from BURCKHARDT & MIFSUD 1998 ): HW 0.43–0.46, AL 0.34–0.35, WL 1.53–1.60, WW 0.69–0.74, TL 0.36–0.40, FPL 0.41–0.49, SL 0.29–0.38. Ratios: AL/HW 0.74–0.86, WL/HW 3.33–3.63, WL/WW 2.03–2.40, TL/HW 0.84–0.93, MPL/HW 0.56–0.58, FPL/HW 0.85–1.00, FPL/SL 1.21–1.41. Figs 39–43. Diaphorina elegans Burckhardt & Mifsud, 1998 , adult. 39 – habitus, lateral view; 40 – habitus, dorsal view; 41 – forewing; 42 – detail of forewing membrane in cell m 1 at M-fork; 43 – head, dorsal view. Fifth instar immature unknown. Differential diagnosis. Diaphorina elegans is easily diagnosable within the genus by the strongly angular apical portion of the forewing anterior margin and the forewing pattern ( Figs 39, 41 ). Host plant. Lycium sokotranum Wagner & Vierh. (Solanaceae) ( Fig. 26 ). Although no immature stages could be collected, D. elegans was invariably associated with this plant in Socotra . Suaeda sp. (Chenopodiaceae) reported by BURCKHARDT & MIFSUD (1998) and BURCKHARDT & HARTEN (2006) as a possible host plant (based on a record of a single specimen) is not confirmed here. Biology. Unknown. No deformations were observed on the host plant with the presence of the psyllid. Occurrence in Socotra . Probably widespread, although perhaps somewhat local, at lower and medium elevations in the vegetation of the coastal plains (e.g. the Croton socotranus community sensu BROWN & MIES 2012 ) and open woodland on limestone plateaus ( Buxanthus pedicellatus – Dracaena cinnabari community, BROWN & MIES 2012 ), including dry and grazed areas ( Fig. 26 ). Distribution. So far only known from the Socotra Island . The host plant is endemic to Socotra ( MILLER & MORRIS 2004 , BROWN & MIES 2012 ).