Gigasanalis Long & Chen, 2022

Huang, Xiu-Dong, Chen, Xiang-Sheng, Yang, Lin & Long, Jian-Kun, 2022, Gigasanalis, a new genus of the tribe Achilini with the description of a new species from China (Hemiptera, Fulgoromorpha, Achilidae), European Journal of Taxonomy 852 (1), pp. 85-97 : 87-88

Genus Gigasanalis Long & Chen gen. nov.

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Type species

Gigasanalis jianfenglingensis Long & Chen gen. et sp. nov., here designated.

Diagnosis

The new genus differs from other taxa of Achilina Stål, 1866 by the following characters: 1) the genus is readily distinguished from other known genera in the tribe Achilini by disc of pronotum with anterior margin roundly concave; 2) stem MP forked in front of claval apex (Stem MP forked apicad of claval apex in Achilus Kirby, 1818 , Olmiana Guglielmino, Bückle & Emeljanov, 2010 and Ouwea Distant, 1907 ); 3) tegmen with wavy branches of MP and CuA.

Etymology

The genus name, which is masculine, is a combination of ‘gigas’ and ‘analis’, indicates the new genus has a large anal segment in Achilini .

Description

HEAD. Width of head with eyes less than ⅔ of width of pronotum. Vertex flat, the anterior margins obvious, posterior margins carinate, lateral carina present and straight, median carina stronger and thicker ( Fig. 5 ). Frons median carina in lateral view ( Fig. 6 ), upper margin subtruncate, median carina complete, lateral margins carinate, sinuously diverging to below level of antennae thence gradually incurved to suture ( Fig. 7 ). Clypeus with median carina weak, surface concave, fronto-clypeal cuneate, posterior margin at border of lora is strengthened, converging and not passing to clypeus, but lora and clypeus not fused ( Fig. 7 ). Rostrum long, just exceeding metacoxae, with apical segment shorter than subapical segment, about 0.6× as long as subapical segment. Antenna setaceous, scapus short, pedicel truncately subglobose, flagellum degradation or absent ( Fig. 6 ). Ocelli separated from eyes ( Fig. 5 ). Pronotum slightly shielding eyes in dorsal view ( Fig. 5 ).

THORAX. Pronotum in mid line shorter than vertex; anterior margin of disk roundly concave, posterior margin elevated, with an incision angle of 145 degrees, median carina distinct, lateral carinae roundly convex towards eyes, not reaching hind margin; anterior margin of pronotal disc is placed between compound eyes at about half ( Fig. 5 ). Mesonotum with scutellum nearly diamond, median area flat, lateral sections slope down, three carinae weak, median and lateral carinae nearly parallel, lateral carinae reaching posterior margin, median carina passing to mesoscutellum, mesoscutellum with transverse stripes ( Fig. 5 ).

WINGS. Fore wing with costal margin slightly convex; apical margin roundly convex; posterior margin with an angle of 155 degrees at apex of clavus; postcostal cell with one crossvein slightly basad of ScP+R forking; costal field with bent recurrent secondary veins; longitudinal veins ScP+R and MP arising as short common stem from basal cell, about ⅓ of length of ScP+R; stem ScP+R approximately 2/5 of length of tegmina ( Fig. 8 ). Vein ScP+RA with fork clearly before RP fork, ending on costal margin with 7–8 terminals; vein RP with fork plainly after MP fork, ending on costal margin with 5–6 terminals; vein MP with fork plainly after CuA fork, before apex of clavus, with 6–7 terminals; veins MP and CuA with wavy branches, cell C4 with many cross veins; CuA with the first fork distinctly before ScP+RA fork, with 2–3 terminals; clavus terminating at middle of forewing, Pcu with 2–3 false transverse veins ( Fig. 8 ). Hind wing with simple ScP+RA, reaching margin based of apex, branch RP vein with 1–2 terminals, stem MP with 2 terminals (MP 1+2 and MP 3+4 not branched), vein CuA with 4 terminals, vein A2 with blind branches ( Fig. 9 ).

LEGS. Post-tibiae with a lateral spine at basal 2/5. Metatibia with 7–8 apical teeth, rightmost apical teeth obviously larger, arrangement in slanting; basimetatarsomere with row of 13 apical teeth, each tooth with platellae except for marginal ones; midmetatarsomere with 14–15 apical teeth, arrangement in arcuate, each tooth with platellae except for marginal ones, internal spines; metatibio-tarsal formula 7(8)–13–14(15) ( Figs 22–23 ).

MALE TERMINALIA. Pygofer in lateral view with dorsal margin distinctly shorter than ventral margin ( Fig. 11 ), ventral view with median bifurcate process ( Fig. 12 ). Aedeagal complex distally with a sheathshaped 4-lobate periandrial part and a rather elongate basal part – mainly formed by the inner penis. Periaodrium distally with paired lateral lobes, ventral lobes and dorsally with an unpaired, base half connected together, protruding cephalad into body cavity ( Figs 14–16 ). Genital lamina obsolete ( Fig. 15 ). Sheath developed, arm-shaped, with apical ⅓ dorsally bent, then with apex directed basally ( Fig. 15 ). Inner penis rods reflexed and elongate, basally fused, distally rod-like, devoid of lateral branches. Anal segment relatively larger in dorsal view; anal style tongue-shaped, wide, bristles vestigial or absent, distinctly covering abdominal end ( Fig. 10 ). Genital style with two tortuous ear-like processes rising from apical third ( Fig. 13 ). Phallobasal conjunctival processes bilaterally symmetrical, exceeding apical margin of phallobase ( Figs 12–13 ). Connective relatively stout and short ( Fig. 15 ).

Host plant

Unknown.

Diversity and distribution

The genus is monotypic and contains a single species from South China (Hainan Province) ( Fig. 24 ).

Figures

Figs 5–7. Gigasanalis jianfenglingensis Long & Chen sp. nov., paratype, ♂ (IEGU). 5. Head and thorax, dorsal view. 6. Head, lateral view. 7. Face. Scale bars = 0.5 mm..

Figs 8–9. Gigasanalis jianfenglingensis Long & Chen sp. nov., paratype, ♂ (IEGU). 8. Fore wing. 9. Hind wing. Abbreviations: A1 = First anal vein; A2 = Second anal vein; bc = Basal cell; C1 = Cell C1; C2 = Cell C2; C3 = Cell C3; C4 = Cell C4; C5 = Cell C5; Cu= Cubitus; CuA = Cubitus anterior; CuP = Cubitus posterior; m-cu = Transverse veinlet between media and cubitus; MP = Media posterior; Pcu + A1 = Postcubitus + First anal vein; Pcu = Postcubitus; r-m = Transverse veinlet between radius posterior and media; RA = Radius anterior; RP = Radius posterior; Sc + R = Subcosta + Radius; ScP + R (+ MA) = Subcosta posterior + Radius (+ Media anterior); ScP + R + M = Subcosta posterior + Radius + Media; ScP + RA = Subcosta posterior + Radius anterior; ScP = Subcosta posterior; ScRA = Subcosta + Radius anterior; WCA = Wing coupling apparatus. Scale bars: = 1 mm.

Figs 17–23. Gigasanalis jianfenglingensis Long & Chen sp. nov. 17–21. Paratype, ♀ (IEGU). 22–23. Paratype, ♂ (IEGU). 17. Female genitalia, ventral view. 18. Anal segment of female, dorsal view. 19. Female genitalia, lateral view. 20. Left valvula I, from inside. 21. Valvula II, ventral view. 22. Spinal formula. 23. Post tibiae. Abbreviations: As = anal segment (segment X); Ast = anal style (paraproct, segment XI); Ep = epiproct (segment XI); GaVIII = gonapophysis VIII (“valvula I”); GaIX = gonapophysis IX (“valvula II”); GcVIII = gonocoxa VIII (“valvifer VIII”); Gp = gonapophysis (“valvula III”); StVII = sternite VII; TVIII = tergite VIII; TIX = tergite IX. Scale bars: 17–19, 22–23 = 0.5 mm; 20–21 = 0.2 mm.

Figs 10–16. Gigasanalis jianfenglingensis Long & Chen sp. nov., paratype, ♂ (IEGU). 10. Anal segment of male, dorsal view. 11. Male genitalia, lateral view. 12. Male genitalia, ventral view. 13. Left genital style, dorsal view. 14. Aedeagus, dorsal view. 15. Aedeagus, lateral view. 16. Aedeagus, ventral view. Abbreviations: As = anal segment (segment X); Ast = anal style (paraproct, segment XI); dbs = dorsobasal suspensorium; dpl = dorsal periandrial lobe; Ep = epiproct (segment XI); GL = genital lamina; GSt = genital style; lpl = lateral periandrial lobe(s); lpr = paired inner penis rods; mvp = medioventral projection of pygofer; Py = pygofer; Sh = sheath; vpl = ventral periandrial lobe. Scale bars = 0.5 mm.

Fig. 24. Geographic distribution of Gigasanalis Long & Chen gen. nov.