Perinetella nigroflava Synave, 1956

Świerczewski, Dariusz & Stroiński, Adam, 2015, Revision of the endemic genus Perinetella (Hemiptera: Fulgoromorpha: Flatidae) from Madagascar, Acta Entomologica Musei Nationalis Pragae 55 (2), pp. 539-558 : 543-553

Perinetella nigroflava Synave, 1956

( Figs 1–54 , 67 )

Type locality. Madagascar, former Toamasina province, Alaotra-Mangoro region, Moramanga district, Andasibe- Mantadia National Park, Analamazaotra forest reserve (= Périnet).

Type material examined. HOLOTYPE: J, “Perinet // Institut Scientifique Madagascar // Type // H. Synave det., 1955 Perinetella nov. nigroflava nov. // 64 // Lectotype Perinetella nigroflava Synave Desig. J.T. Medler, 1991 // Museum Paris MNHN ( EH) 586” ( MNHN) . PARATYPES: 1 J “Perinet // R. I.Sc. N.B.I.G. 20201 // H. Synave det., 1955 Perinetella g. n. nigroflava sp. n. // Paratype // Perinetella nigroflava . Synave.” ; 1 J, same labels but “ R. I.Sc. N.B.I.G. 23.285” (both IRSNB) .

Additional material examined. 1 J, “Perinet // Institut Scientifique Madagascar // H. Synave det., 1963 Perinetella nigroflava Syn. // R. I.Sc. N.B.I.G. 22.889” ( IRSNB) ; 1 J, 2 ♀♀ “ Environs de Rogez Madagascar ” ( NMPC) ; 1 J, “ MADAGASCAR Centr. Prov. de Moramanga Pèrinet , 10.12.1937 leg. B. Kreczmer et J. Skibiński // ad lucem // Mus. Zool. Polonicum Warszawa 99/50 // MIZ 212660” ; 1 ♀, same data but “ 26.12.1937 // MIZ 212665” ; 1 J, same data but “ 31.12.1937 // MIZ 212687” ; 1 ♀, same data but “ 31.12.1937 // MIZ 212692” ; 1 J, same data but “ 7.01.1938 // MIZ 212695” ; 1 ♀, same data but “ 7.01.1938 // MIZ 212673” ; 1 J, same data but “ 29.01.1938 // las // MIZ 212653” ; 1 J, same data but “ 30.01.1938 // MIZ 212686” (all MZPW). 1 J, “ MADAGASCAR: Province Fianarantsoa, Parc National Ranomafana, Belle Vue at Talatakely , elev 1020m 4–16 May 2003 // 21°15.99’S, 47°25.21’ E coll: M. Irwin, R. Harin’Hala California Acad of Sciences malaise, secondary tropical forest MA-02- 09C-60 // CASLOT 044694” ( CAS) .

Diagnosis. Perinetella nigroflava is similar to P.fiedleri sp. nov. but differs in the following characters: process of periandrium with two arms oriented ventro-basad, anterior arm single and distinctly shorter than posterior one; posterior arm bifurcate, lower process shorter than upper one ( Fig. 37).

Redescription. Measurements. Total length: 12.60–14.50 mm. Vertex:A/B 5.43–8.00. Frons: C/ E 0.56 –0.65; D/ E 0.67 –0.88. Pronotum: F/B 3.14–4.40. Mesonotum: G/F 4.26–5.14; G/ B+F 3.38–4.07; G/H 0.88–1.05. Tegmina: sutural angle rounded, I/J 1.74–1.90.

Coloration. Head dark brown; frons black, lateral parts yellowish. Pronotum brownish-yellow, mesonotum and legs black. Abdomen with sternites black, tergites yellow. Tegmina yellowish with black dot at base ( Figs 1–4 ).

Male terminalia. Anal tube, in lateral view, with apical part widely rounded ( Figs 31, 32 , 35); in dorsal view, with apical part elongately oval ( Figs 29, 30 , 36). Genital style with weakly arcuate or almost straight dorsal margin, lower part of posterior margin concave, upper part convex; ventral margin almost straight; capitulum short and wide ( Figs 32, 33 , 35). Periandrium ( Figs 37, 38) with ventral margin of dorsal part bearing well-developed lobe; apical process of dorsal periandrium with two arms oriented ventro-basad, anterior arm single and distinctly shorter than posterior; posterior arm bifurcate, lower process shorter than upper; posterior arms in some specimens showing asymmetry (not bifurcated).

Female terminalia. Pregenital sternite with anterior margin slightly produced medially and posterior margin weakly arcuate; median part and margins well sclerotized ( Fig. 47 ). Anal tube, in lateral view, with ventral margin distinctly rounded ( Figs 43, 44 ). Gonoplac with weakly sclerotised, elongate area alongside ventral margin ( Figs 48, 49 ).

Etymology. The specific epithet comes from a combination of Latin adjectives: nigrus – black and flavus – yellow, and reflects the coloration of the species.

Distribution. Madagascar: former Toamasina and Fianarantsoa provinces ( Fig. 67 ).

Remark. SYNAVE (1956) in his original description mentioned four paratypes; however, in his later paper concerning the types in IRSNB, he listed only two ( SYNAVE 1980). This information was confirmed by MEDLER (1993a). We also could examine only these two paratypes in our study.

Figures

Figs 1–4. Perinetella nigroflava Synave, 1956; habitus. 1 – lateral view; 2 – dorsal view; 3 – anterior part, dorsal view; 4 – same, frontal view.

Figs 5–10. Perinetella nigroflava Synave, 1956; SEM micrographs.5 – anterior part,dorsal view; 6 – same, dorso-lateral view (from right); 7 – head and prothorax, dorsal view; 8 – vertex, sensory and secretory structures; 9 – dorsal portion of vertex and anterior portion of pronotum, dorso-lateral view (from left side); 10 – same, frontal view.

Figs 11–16. Perinetella nigroflava Synave,1956; SEM micrographs.11, 12 – anterior part,frontal view; 13, 14 – same, left (13) and right (14) lateral views; 15 – upper frons, secretory structures; 16 – anterior pronotum, secretory structures.

Figs 17–22. Perinetella nigroflava Synave, 1956; SEM micrographs. 17 – antenna, frontal view; 18–20 – pedicel, dorsal view; 21, 22 – setae and plate organs: 21 – dorsal surface, 22 – apical concavity.

Figs 23–28. Perinetella nigroflava Synave, 1956; tegmen, SEM micrographs. 23, 24 – lateral view; 25 – clavus, dorso-lateral view; 26 – basal part, dorso-lateral view (with labelled structures); 27 – apical part; 28 – veins, secretory structures.

Figs 29–34. Perinetella nigroflava Synave, 1956; male, SEM micrographs. 29 – abdomen, dorsal view; 30 – anal tube, dorsal view; 31 – abdomen, lateral view; 32 – terminalia, lateral view; 33 – terminalia, caudal view; 34 – phallic complex, caudal view.

Fig. 67. Distribution of the genus Perinetella Synave, 1956 in Madagascar.

Figs 47–54. Perinetella nigroflava Synave, 1956; female.47 – pregenital sternite, flattened, ventral view; 48 – gonoplac, right external view; 49 – same, internal view; 50 – gonapophysis VIII, lateral view; 51 – gonapophyses IX and gonospiculum bridge, dorsal view; 52 – same, lateral view; 53 – bursa copulatrix, lateral view; 54 – spermatheca.

Figs 41–46. Perinetella nigroflava Synave, 1956; female, SEM micrographs. 41, 42 – abdomen, dorsal view; 43, 44 – terminalia, lateral view; 45, 46 – terminalia, caudal view.