Losbanosia tamdaoensis, Szwedo, Jacek & Adamczewska, Malgorzata, 2004

Szwedo, Jacek & Adamczewska, Malgorzata, 2004, Notes on some Oriental Derbidae (Hemiptera: Fulgoroidea) with description of new species, Zootaxa 597, pp. 1-11 : 5-7

Losbanosia tamdaoensis sp. nov.

( Figs. 13–30 )

DIAGNOSIS: It differs from other Losbanosia species by this combination of characters: diamond­shaped medioventral process of pygofer (almost subtriangular in L. taivaniae , diamond­shaped but shorter and wider in L. hibarensis ), posterolateral margin of pygofer with distinct lateral process, tapered posteriad (no process in L. taivaniae , process in L. hibarensis shorter and rounded at apex); anal tube about three times as long as wide at base, distinctly widened at base with lateral margins subparallel and without apical processes (anal tube not widened at base and with convex lateral margins and two apical processes in L. taivaniae ; anal tube shorter, about 2.5 times as long as wide at base, with lateral margins concave in L. hibarensis ); aedeagus with acute endosomal process (blunt in L. taivaniae ); flagellar lobe with distinct apical concavity (lack of such concavity in L. hibarensis ), phallotheca with additional process on caudad margin directed dorsolaterally right (no such process in L. hibarensis and L. taivaniae ); VIIIth abdominal segment with distinct crest (lack of such crest in L. taivaniae and small crest in L. hibarensis ); posterior margin of tegmen less undulate than in L. hibarensis , wing with veins CuA2 and CuP fused near margin in common point (transverse veinlet uniting these veins in L. taivaniae and L. hibarensis ); postclypeus with distinct lateral carinae (lack of such carinae in L. hibarensis ).

DESCRIPTION: Length of body 4.06 mm, length of tegmen 10.1 mm. General colour brownish, face darker brown, rostrum yellowish, antennae reddish­brown, femora brownish, tibiae and tarsi yellowish; tegmen hyaline with blackish markings, costal margin red, subcostal area of apical portion of tegmen with whitish markings, basal portions of veins red, apical portion brownish; wings hyaline, with smoky background and blackish markings in apical portion, venation red.

Vertex ( Fig. 13 ) triangular, twice as wide at base as long in mid line (0.16 mm), with bifurcate apex and concave posterior margin, disc distinctly excavate; frons 0.78 mm long, with lateral carinae close to each other; postclypeus 0.61 mm long, convex, with distinct median and lateral carinae; anteclypeus 0.48 mm long with distinct median carina; rostrum 0.92 mm long, subapical segment 4.5 times longer than apical one, apical segment as long (0.17 mm) as wide; compound eyes with distinct ventral incision ( Figs. 14 & 15 ), ocelli lacking; 2nd antennal segment ( Fig. 16 ) 1.31 mm long, cylindrical with apical concavity, covered with numerous sensillae.

Pronotum ( Fig. 13 ) distinctly wider than head with compound eyes, 1.53 mm wide, 0.14 mm long in mid line, with median carinae and distinct postocular carinae reaching posterolateral margin; posterior margin distinctly incised; disc of pronotum in anterior lower portion and posterior portion covered with whitish tubercles.

Mesonotum 1.63 mm long in mid line, 1.7 mm wide, with distinct median carina and lateral carinae, disc distinctly convex, posterior margin carinate.

Metanotum with anterior margin carinate, 0.49 mm long in midline, with median carina, anterior margin distinctly incised, posterior margin roundly triangular.

Tegmina ( Fig. 18 ) longer than widest part about 3.4:1, longer than wings about 1:0.34, with anterior margins almost straight, posterior margin subparallel, slightly concave, with rather indistinct undulation; vein RA with two terminals, RP with three terminals, M with 5 terminals, CuA + CuP with 4 terminals; second transverse veinlet m­cu short.

Wings ( Fig. 19 ) with anterior margin arched anteriad in median portion, ScRA reaching margin about half of wing length, RP and M fused in subapical portion, at the level of m­cu veinlet, M with single terminal, CuA with three terminals, CuP distinctly curved, and deflected basad in terminal portion, at the level junction of CuA2 with CuP, PCu distinctly curved, stridulatory area on anal field distinct.

Fore and mid tibiae slender, subequal in length (2.35 mm), hind femur 1.14 mm long, hind tibia ( Fig. 17 ) 2.69 mm long, slender, with distinct subapical lateral spine and second lateral spine distinctly apicad of half of hind tibia length; tarsus 0.95 mm long, basitarsomere 0.64 mm long, longer than combined length of mid and hind tarsomeres, mid and hind tarsomeres subequal in length (0.34 mm), tarsal claws delicate; tibio­metatarsal formula 5:5:5.

Abdomen ( Figs. 20–22 ) with genital segment about as long as anterior part of body, IIIrd abdominal sternite with distinct (sensory?) pits in median portion and at caudal margin; IVth and Vth abdominal sternites pitted, VIth abdominal tergite with distinct crest and with two impressions, VIIth tergite with distinct crest and single impression, VIIIth tergite with small crest.

Pygofer ( Figs. 20, 22 & 23 ) 0.64 mm long in mid line, with distinct, diamond­shaped, distinctly convex medioventral process; posterolateral margin of pygofer oblique, with distinct, acutely rounded process; anal tube ( Fig. 24 ) 0.98 mm long, slender, about 3 times as long as wide at base, distinctly wider at base, basal portion narrowing apicad, with lateral margins subparallel, apex rounded, without median incision and processes, dorsal portion with bilobed apical margin, anal style quite long; aedeagus ( Figs. 28–30 ) with acute endosomal process; in right lateral view flagellar lobe with distinct apical concavity, phallotheca with additional process on caudal margin directed dorsolaterally right; genital style ( Figs. 25–27 ) with narrow basal portion, apical portion subquadrate, with distinct posterior margin curved mediad, distinct subapical dorsal process present, dorsal margin at middle with distinct, hooked posterolaterad process, ventral margin with distinct ventrolateral, subtriangular protrusion.

ETYMOLOGY: Species named after locality Tam Ðao in Viet Nam.

MATERIAL EXAMINED: Holotype, male. Labelled: [ Losbanosia / tamdaoensis Szw. et Ada. ɗ]; red label [HOLOTYPE]; [ TONKIN: Vinh Phu / Tam Ðao, 1000 m. / road above village / 24.X.1996 / coll. R. Holyński]; [ MZPW 14/2003].

ADDITIONAL MATERIAL EXAMINED: specimens of Losbanosia hibarensis ( Matsumura, 1935) : Museum and Institute of Zoology, Polish Academy of Sciences, Warsaw: 1 female [ Nomuraida / hibarensis (Mats.) &/ det. J. Szwedo 2003], [ Korea, Thomaktong / 20 km N Č ongdżin / (7867) 8.9.1970 / R. Bielawski & / M. Mroczkowski], [Inst. Zool. P.A.N. / Warszawa / 69/70]; 1 male [ Nomuraida / hibarensis (Mats.) ɗ/ det. J. Szwedo 2003], [ Korea / Onpha ad Chongjin / 16.8.1959 / leg. B. Pisarski / & J. Prószyński / right lateral margin (5838)], [Inst. Zool. P.A.N. / Warszawa / 58/59]. Museum National dHistoire Naturelle, Paris: [ Corée / Posoksa / Keumsan / 17/ 21­VIII­1998], [Museum Paris / P. Tripotin réc.], [ Nomuraida / hibarensis (Mats.) ɗ/ det. J. Szwedo 2003]; 6 males [ Corée / Sanan 2 Li / Keumsan / 20/ 30­VII­1998], [Museum Paris / P. Tripotin réc.], [ Nomuraida / hibarensis (Mats.) ɗ/ det. J. Szwedo 2003]; 1 female [ Corée / Posoksa / Keumsan / 17/ 21­VIII­1998], [Museum Paris / P. Tripotin réc.], [ Nomuraida / hibarensis (Mats.) &/ det. J. Szwedo 2003]; 1 male [Museum Paris / COREE DU SUD / Changdong 2 ku], [TAEJON / 14­17.VIII.1996 / P. Tripotin rec.], [ Nomuraida / hibarensis (Mats.) ɗ/ det. J. Szwedo 2003]; 1 female [Museum Paris / COREE DU SUD / Changdong 2 ku], [TAEJON / 14­17.VIII.1996 / P. Tripotin rec.], [ Nomuraida / hibarensis (Mats.) &/ det. J. Szwedo 2003].

Figures

FIGURES 13 – 30. Losbanosia tamdaoensis sp. nov. Fig. 13. Anterior part in dorsal view; Fig. 14. Head in frontal view; Fig. 15. Anterior part in left lateral view; Fig. 16. Antenna; Fig. 17. Hind tibia and tarsus; Fig. 18. Tegmen; Fig. 19. Wing; Fig. 20. Abdomen in left lateral view; Fig. 21. Abdomen in dorsal view; Fig. 22. Abdomen in ventral view; Fig. 23. Pygofer in ventral view; Fig. 24. Anal tube in dorsal view; Fig. 25. Left style in lateral view; Fig. 26. Styles in dorsal view; Fig. 27. Styles in ventral view; Fig. 28. Aedeagus in right lateral view; Fig. 29. Aedeagus in left lateral view; Fig. 30. Aedeagus in dorsal view.