HEMIDICTYINI DISTANT, 1905

Ruschel, Tatiana Petersen & Campos, Luiz Alexandre, 2019, Phylogeny and biogeography of the leaf-winged cicadas (Hemiptera: Auchenorrhyncha: Cicadidae), Zoological Journal of the Linnean Society 185 (4), pp. 1150-1187 : 1180-1181

TRIBE HEMIDICTYINI DISTANT, 1905

Hemidictyini Distant, 1905: 275 .

Synonyms: Lacetasini Moulds & Marshall, 2018: 49 . syn. nov.

Type genus: Hemidictya Burmeister (type species Hemidictya frondosa Burmeister ).

Included genera: Bafutalna Boulard, 1993 ; Hemidictya Burmeister, 1835 ; Hovana Distant, 1905 ; Iruana Distant, 1905 ; Lacetas Karsch, 1890 ; Murphyalna Boulard, 2012 ; and Sapantanga Distant, 1905 .

Included species: Bafutalna mirei Boulard, 1993 ; Hemidictya frondosa Burmeister, 1835 ( Fig. 13A, B ); Hovana distanti (Brancsik, 1893) ( Fig. 16A, B ); Iruana brignolii Boulard, 1982 ; I. meruana Boulard, 1990 ; I. rougeoti Boulard, 1975 ( Fig. 18A ); I. sulcata Distant, 1905 ( Fig. 19A ); Lacetas annulicornis Karsch, 1890 ( Fig. 20A–D ); L. breviceps Schumacher, 1912 ; L. jacobii Schumacher, 1912 ; L. longicollis Schumacher, 1912 ( Fig. 21A–E ); Murphyalna mughessensis Boulard, 2012 ; Sapantanga nutans Distant, 1905 ( Fig. 22A–C ).

Diagnosis: Head with supra-antennal plate meeting eye; eyes not protruding laterally (except in Sapantanga ); supra-antennal plates narrow, almost the same width of ocelli (except in Hemidictya ); lateral ocelli widely spaced, not higher than median ocellus in frontal view; ocular tubercle absent; vertex wider than eye diameter; apex of postclypeus longer than or equal to the vertex in dorsal view, right angled in lateral view (except in Sapantanga ) and round in frontal view; tumid processes absent in transverse grooves. Pronotum with median groove present; pronotal lobes flat (except in Iruana and Sapantanga ); paranota present (except in Sapantanga ); lateral angle of pronotal collar truncate (except in Sapantanga ). Mesonotum with scutellum cruciform ( Iruana and Sapantanga ), triangular ( Hemidictya and Hovana ) or subrectangular ( Lacetas ); operculum small, covering at least half of the tympanal cavity; meracanthus longer than posterior margin of operculum. Forewings opaque ( Lacetas , Hemidictya and Hovana ), pigmented, but translucent ( Iruana ) or colourless ( Sapantanga ); expansion of vein C (shelf-like) present (except in Hovana and Sapantanga ); vein RA aligned closely with subcosta (Sc) for its length (except in Sapantanga ); apical area of forewings not reticulated (except in Hemidictya and Hovana ); apical cells in number of eight to ten (except in Hemidictya and Hovana ); subapical cells absent (except in Hemidictya and Hovana ); marginal area absent (except in Iruana and Sapantanga ); ulnar cell (u3) angled to medial cell (mc); ulnar cell (u3) subequal to medial cell (mc) (except in Hovana that is longer (twice the size)). Male abdomen fusiform (tergites with sides straight). Sternite I not exposed (except in Sapantanga ). Uncus present (except in Sapantanga and Hemidictya ). Claspers, when present, with apex posteriorly directed (only for Sapantanga and Hemidictya ). Pygofer upper lobe and dorsal beak absent (except in Hovana ); pygofer secondary upper lobe absent; basal lobe of pygofer well-defined. Aedeagus lateral crest absent. Pseudoparameres absent.

Distinguishing characters: Lateral ocelli widely spaced; ocular tubercle absent; anal lobe of hindwings very wide, the apex forming an obtuse angle; abdomen fusiform; pygofer with basal lobe well-defined; uncus, when present, ventrally developed, tube-shaped; clasper, when present, posteriorly developed, U-shaped; uncus and claspers never present together; aedeagus tubular, without median and distal curvatures, lateral crest or pseudoparameres.

R e m a r k s: T h e o n l y e x i s t i n g d i a g n o s i s f o r Hemidictyini was proposed by Distant (1905b), based in an old classification including genera now classified in Chlorocystini and Prasiini . Therefore, the characteristics listed by Distant (1905b), such as narrow head and the more or less globose and usually longitudinally, dorsally ridged abdomen, are not useful to distinguish Hemidictyini .

Figures

Figure 13. Lectotype (A) and paralectotype (B) male of Hemidictya frondosa (ZMHB) in dorsal and lateral view, respectively. Scale: 1 mm.

Figure 16. Holotype male of Hovana distanti in dorsal (A) and lateral views (B), and pygofer in lateral view (C) (HNHM). Scale: 1 cm.

Figure 18. A, Iruana rougeoti (male) in dorsal view (NHMUK); pygofer in lateral (B) and postero-lateral views (C). Scale: A = 10 mm, B, C = 1 mm.

Figure 19. A, syntype male of Iruana sulcata in dorsal view; pygofer in lateral (B) and ventral views (C). Scale: A = 10 mm, B, C = 1 mm.

Figure 20. A, holotype female of Lacetas annulicornis in dorsal (ZMHB); B, specimen female of Lacetas annulicornis in lateral view (ZMHB); C, pygofer in lateral view (NHMUK); D, specimen male in dorsal view (NHMUK). Scale: A, B = 5 mm; C = 1 mm; D = 20 mm.

Figure 21. Syntype male of Lacetas longicollis in dorsal (A) and lateral view (B) (ZMHB); pygofer in lateral (C) and ventral views (D) (NHMUK); specimen male in dorsal view (E) (NHMUK). Scale: A, B = 5 mm; C and D = 1 mm; E = 20 mm.

Figure 22. A, holotype male of Sapantanga nutans in dorsal view (NHMUK); pygofer in ventral (B) and lateral view (C) (NHMUK). Scale: A = 10 mm, B, C = 1 mm.