Longieusarima, Zhang, 2017

Zhang, Yalin, 2017, New Oriental genera in the family Issidae (Hemiptera: Fulgoromorpha), Zootaxa 4312 (2), pp. 355-367 : 362-363

Longieusarima gen. nov.

Type species: Longieusarima lunulia sp. nov., here designated.

Diagnosis. Longieusarima gen. nov. looks similar to Eusarima Yang, 1994 , but differs by: 1) Vertex nearly as wide as long ( Fig. 29 ), while more wider than long in Eusarima ( Chan & Yang, 1994: fig. 45a); 2) The first fork of MP vein occurs well before the fork of CuA vein on forewing ( Fig. 31 ), while in Eusarima , almost in the same level ( Chan & Yang, 1994: fig. 45c); 3) both median carina and sublateral carinae of frons only visible at basal half ( Fig. 30 ), while both are very clear from base to apex in Eusarima ( Chan & Yang, 1994: fig. 45b). This genus is also very similar to Parasarima Yang, 1994 , from which it differs by: 1) ScP+RA vein of forewing obvious shorter than Parasarima ; 2) The ratio of length and width of vertex is 1.0 in this genus ( Fig. 29 ) but less than 0.5 in Parasarima ( Chan & Yang, 1994: fig. 39a); 3) MP vein on forewing forks first before CuA vein ( Fig. 31 ), while at the same level in Parasarima ( Chan & Yang, 1994: fig. 39c).

This genus is also close to Sinesarima Yang, 1994 and Neosarima Yang, 1994 , but the longer ScP+RA forewing branch and the longer median and sublateral carinae of frons in Longieusarima allow it to be separated from these two genera.

Description. Head with compound eyes very slightly wider than thorax ( Figs. 27, 29 ). Vertex nearly quadrate, as long as wide, median carina absent; anterior margin obviously and angularly convex, posterior margin roundly concave at middle ( Figs. 27, 29 ). Frons angularly expanded outwardly below antenna; apical margin slightly angularly convex; sublateral carinae obviously elevated at apical half, reaching middle level of compound eyes; median carina present but weak, extending to near middle of frons ( Fig. 30 ). Frontoclypeal suture dorsally convex ( Fig. 30 ). Clypeus flattened, without carina ( Fig. 30 ). Rostrum short, reaching mesocoxae. Gena in lateral view flattened and oblique, vertex and frons meeting at acute angle ( Fig. 28 ). Pronotum triangular, anterior and posterior margins elevated, median area with two small incisions, without median carina ( Figs. 27, 29 ). Mesonotum with weak median carina present in basal half ( Figs. 27, 29 ). Forewings elongate, apparently longer than width, hypocostal plate present; forewing expanded outwardly at basal third, longitudinal veins obvious and elevated ( Figs. 27, 28, 31 ); vein ScP+R first separating near base, ScP+RA short, reaching middle of costal margin, the terminal of RP vein reaching the outer margin of forewing; MP vein first fork at basal third, MP1+2 fork again at apical 1/5, MP3+4 simple, not forking again; CuA vein first bifurcate at middle; MP first fork before CuA ( Figs. 27, 28, 31 ); clavus obvious, veins Pcu and A1 fused near middle, transverse veins of forewing well developed ( Figs. 27, 31 ). Hindwing well developed, 3-lobed, Pcu-A1 lobe as wide as ScP-R-MP-Cu lobe, anal lobe broad; Pcu single, Pcu and A1 anastomosing for long distance; A2 non branched ( Fig. 32 ). Hind tibia with 2 lateral spines on apical half.

Male terminalia. Anal tube long ( Figs. 33 , 38 ). Gonostylus triangular in profile, broadening from base to apex, widest at apical 1/3, caudo-ventral angle rounded, capitulum finger-shaped ( Figs. 33, 35 , 38 ). Pygofer with dorsal margin apparently narrower than ventral margin, posterior margin obviously and caudally produced ( Figs. 33 , 38 ). Periandrium shallowly U-shaped, Aedeagus with pair of ventral processes derived from apical 1/9 and directed basad ( Figs. 36 , 38 ). Apical part of periandrium divided into dorsal lobe, pair of lateral lobes and ventral lobe.

Female terminalia. Anal tube relatively short in lateral view. Anterior connective lamina of gonapophysis VIII with teeth at apex, outer lateral margin and inner lateral margin without teeth ( Fig. 47 ). Gonocoxa VIII subquadrangular, oblique connected with gonapophysis VIII ( Fig. 47 ). Posterior connective lamina of gonapophysis IX with large special structure the top of which is rough on surface ( Figs. 43, 45 ). Gonoplac rounded in lateral view ( Fig. 44 ), fused at middle, widest at basal half ( Fig. 42 ). Hind margin of sternite VII almost straight at middle ( Fig. 46 ).

Etymology. The name is a combination of Latin prefix “longi-” and the genus name Eusarima , indicating this genus with vertex obviously protruded forward in the Eusarima group. The gender is feminine.

Note. This genus refers to the taxon “ gen. nov. apud Eusarima ” on the molecular phylogenic analyses ( Wang et al., 2016).

Figures

FIGURES 27 – 32. Longieusarima lunulia sp. nov. 27. Adult, dorsal view; 28. Adult, lateral view; 29. Head and thorax; 30. Frons and clypeus; 31. Forewing; 32. Hindwing.

FIGURES 33 – 37. Longieusarima lunulia sp. nov. 33. Male terminalia, lateral view; 34. Male anal tube, dorsal view; 35. Gonostylus, lateral view; 36. Phallic complex, lateral view; 37. Phallic complex, ventral view.

FIGURES 38 – 40. Longieusarima lunulia sp. nov. 38. Male terminalia, lateral view; 39. Apical part of phallic complex, ventral view; 40. Schemata of phallic complex. Scale bars = 0.5 mm.

FIGURES 41 – 47. Longieusarima lunulia sp. nov. 41. Female anal tube, dorsal view; 42. Gonoplac, dorsal view; 43. Gonapophysis IX and gonaspiculum bridge, ventral view; 44. Gonoplac, lateral view; 45. Gonapophysis IX and gonaspiculum bridge, lateral view; 46. Sternite VII; 47. Gonocoxa VIII and gonapophysis VIII, lateral view.