Microsarimodes Chang & Chen, 2019

Chang, Zhi-Min, Yang, Lin & Chen, Xiang-Sheng, 2019, A new genus Microsarimodes with one species from Hainan Province in China (Hemiptera: Fulgoromorpha: Issidae), Zootaxa 4688 (1), pp. 135-143 : 137-140

Microsarimodes Chang & Chen , gen. nov.

( Figs 7–8 , 18–37 )

Type species: Microsarimodes tumida Chang & Chen , sp. nov.

Diagnosis. Microsarimodes gen. nov. can be easily distinguished from most genera of Sarimini by vertex quadrangular, distinctly wider than long in middle; frons relatively flat, median carina stout and lateral carina feeble, not reaching over middle; forewings relatively narrow, apical margin round, with ScP long, reaching over middle, RP forked before middle of forewing; hind wings with Pcu non branched, without transverse vein between CuP and Pcu; aedeagus with one process. The new genus is very similar to Sarimodes , but it differs by: 1) smaller body size 6.50–7.50 mm ( Fig. 7 ); 2) forewings with MP dividing before middle of forewing ( Fig. 21 ); 3) gonostyli with irregularly tumefied protuberance near base of capitulum ( Fig. 25 ); 4) gonoplacs irregularly triangular ( Fig. 36 ).

Description. Body small-medium size.

Head and Thorax. Width of head including eyes slightly narrower than pronotum ( Fig. 18 ). Vertex hexagonal, anterior margin obtusely convex, posterior margin arched concave, lateral margin paralleled, disc of vertex depressed, with median carina obscure or linear in dorsal view ( Fig. 18 ). Gena with one obvious ocellus between compound eye and antenna in lateral view ( Fig. 19 ). Frons ( Fig. 20 ) irregular hexagonal, basal margin arched concaved, apical margin nearly straight, lateral margin not paralleled, the base narrow, broader toward to apical margin, the maximum width below level of antenna, with median carina and lateral carina, not reaching to middle of frons, with verrucae along base margin and lateral margin. Clypeus ( Fig. 20 ) triangular, with stout median carina. Rostrum reaching mesotrochanters. Pronotum ( Fig. 18 ) triangular, anterior margin obtuse-angle concaved, posterior margin straight, with median carina obscure or slim, with lateral carina, and pit each other between median carina and lateral carina. Mesonotum ( Fig. 18 ) triangular, with median carina obvious and lateral carina obscure. Forewings ( Fig. 21 ) oblong, anterior margin slightly cambered convex, posterior margin straight, longitudinal veins obvious, with unobvious short transverse veins, ScP long, reaching or exceeding middle of forewing, ScP and RP convergent near base, RP not forked, MP forking before middle of forewing and before bifurcation of CuA, MP 1 forked near distal 1/4, CuA forked into two branches behind middle of forewing, CuP present, Pcu and A 1 uniting near middle of clavus. Hindwings ( Fig. 22 ) well developed, trilobed, R and CuA forked near apical part, MP simple, not forked, CuA 2 and CuP fused near apical part, with one vein between R 2 and M, and M and CuA 1, Pcu non branched, without transverse vein between CuP and Pcu, A 1 simple. Hind tibia with 2 lateral spines and 6–7 apical spines, first metatarsomere with 6–7 apical spines, second metatarsomere with 2 spines.

Male genitalia. Anal tube ( Fig. 24 ) irregularly oblong in dorsal view. Anal style ( Fig. 24 ) located near middle, relatively long. Pygofer ( Fig. 23 ) symmetrical, irregularly rectangular, posterior margin with obvious triangular process. Gonostyli ( Figs 23, 25 ) symmetrical, irregularly triangular in lateral view, bearing small sheet prominence in tumefied protuberance near dorsal margin at the base of capitulum. Phallobase ( Fig. 27 ) symmetrical, “U”-liked tubular, dorsal lobe without any processes near apex in lateral view. Aedeagus ( Figs 27–28 ) with one hooked process in lateral view.

Female genitalia. Anal tube ( Figs 29, 32 ) extremely narrow and obviously longer in middle line than the width. Anal style ( Figs 29, 32 ) located in base of anal tube, short, not surpassing the end of anal pore. Hind margin of gonocoxa VIII with endogonocoxal lobe obscure, endogonocoxal process membranous developed ( Figs 30–31 ). Anterior connective lamina of gonapophyses VIII irregularly rectangular, bearing 4–5 keels in lateral group and 2–3 small teeth in apical group, and with one small tooth in ventral margin ( Fig. 33 : vt). Posterior connective lamina of gonapophyses IX ( Figs 34–35 ) triangular and narrow in dorsal view. Gonoplacs ( Fig. 34 ) irregularly triangular, without keel. Hind margin of sternite VII with prominence in middle area in ventral view ( Fig. 37 ).

Distribution. China (Hainan). Etymology. The generic name is derived from a combination of “micro-” and “ Sarimodes ” (meaning that the new genus is similar to genus Sarimodes Matsumura, 1916 in appearance, but it is smaller than Sarimodes in size). The gender is feminine.

Remarks. The new genus is similar to Sarimodes Matsumura, 1916 , but it differs from the latter by: 1) the size ranges from 6.0– 7.5 mm (8.0–10.0 mm in Sarimodes ); 2) MP forking before middle of forewing ( Fig. 8 ) (MP forking near distal of forewing in Sarimodes ( Fig. 12 )); 3) phallobase with dorsal lobe without any processes near apex ( Fig. 27 ) (with dorsal lobe bearing pair of strong and long processes near apex in Sarimodes (Meng & Wang, 2016: fig. 24)); 4) gonostyli with tumefied protuberance at base of capitulum ( Fig. 25 ) (without such a protuberance at base of capitulum in Sarimodes (Meng & Wang, 2016: fig. 22)); 5) gonoplacs of female genitalia triangular ( Fig. 36 ) (quadrangular in Sarimodes (Meng & Wang, 2016: fig. 28)).

Figures

FIGURES 1–17. Dorsal and lateral habitus of Sarimini species and frons in ventral view. (Figs 1–3) Eusarima yangi Chen, Zheng & Chang, 2014; (Figs 4–6) Longieusarima lunulia Wang, Bourgoin & Zhang, 2017; (Figs 7–8) Microsarimodes tumida Chang & Chen, sp. nov.; (Figs 9–11) Sarima bifurca Meng & Wang, 2016; (Figs 12–14) Sarimodes sp.; (Figs 15–17) Yangissus maolanensis Chen, Zheng & Chang, 2014. Scale bars=0.5 mm.

FIGURES 18–28. Microsarimodes tumida Chang & Chen, sp. nov. 18. Head and thorax, dorsal view; 19. Same, lateral view; 20. Head, ventral view; 21. Forewing; 22. Hindwing; 23. Male genitalia, lateral view; 24. Male anal segment, dorsal view; 25. Gonostyli, lateral view; 26. Capitulum of gonostyli, posterior view; 27. Aedeagus and phallobase, lateral view; 28. Same, ventral view. a—sheet prominence, b—tumefied protuberance, c—lobe-liked, d—ventral lobe, e—hooked process. Scale bars = 0.5 mm.

FIGURES 28–37. Microsarimodes tumida Chang & Chen, sp. nov. 29. Female genitalia, dorsal view; 30. Same, lateral view; 31. Same, ventral view; 32. Female anal segment, dorsal view; 33. Anterior connective lamina of gonapophyses VIII, lateral view; 34. Posterior connective lamina of gonapophyses IX, dorsal view; 35. Posterior connective lamina of gonapophyses IX, lateral view; 36. Gonoplacs, lateral view; 37. Sternite VII, ventral view. vt—ventral tooth; lf—lateral field of posterior connective lamina of gonapophyses IX; slf—sublateral field of posterior connective lamina of gonapophyses IX; mdp—medial dorsal process; pvd—posterior ventral lobes. Scale bars = 0.5 mm.