Necyla shirozui ( Nakahara, 1961 )

Necyla shirozui ( Nakahara, 1961) View in CoL

[Japanese name: Tsushima-kamakirimodoki] ( Figs 12 View Fig , 13 View Fig )

Cercomantispa shirozui Nakahara, 1961: 63 View in CoL , figs 1–9 [type locality: Kamizaka-Shiratake , Tsushima ( Japan)].

Material examined. Kyushu: 1 female, 18 August 1968, Ariakeyama, Izuhara-machi, Tsushima-shi, Tsushima Is., Nagasaki, I . Hiura leg . ( OMNH); 1 male, same date and locality, K . Tani leg . ( OMNH); 1 male, 5–7 August 1975, Tsushima Is ., Nagasaki, Y . Miyatake leg . ( OMNH); 1 male ,

23 May 1976, Izuharajoshi, Izuhara-machi, Tsushima-shi, Tsushima Is., Nagasaki, I . Hiura leg . ( OMNH); 1 female, 23 May 1976, Shimizuyama, Izuhara-machi, Tsushima-shi, Tsushima Is ., Nagasaki, I . Hiura leg . ( OMNH); 1 female, 15 September 1977, Mitsushima-machi, Tsushima-shi, Tsushima Is ., Nagasaki, O . Tominaga leg . ( OMNH); 1 female, 16 September 1977, Komoda, Izuhara-machi, Tsushima-shi, Tsushima Is ., Nagasaki, I . Hiura leg . ( OMNH); 2 males, 4 June 1983, Azamo, Izuhara-machi, Tsushima-shi, Tsushima Is ., Nagasaki, T. Saito leg . (MPIM-4173, N007); 2 females, 4 June 1983, Mokkokuyama, Izuhara-machi, Tsushima-shi, Tsushima Is., Nagasaki, T. Saito leg . ( MPIM); 1 female, 6 June 1983, Kamisaka, Izuhara-machi, Tsushima-shi, Tsushima Is ., Nagasaki, T. Saito leg . (MPIM-4167); 1 male, 2 June 1996, Sagohigashisato, Kamiagata-machi, Tsushima-shi, Tsushima Is., Nagasaki, R. Matsumoto leg . ( OMNH); 1 male, 24 July 1997, Tendohoshihokora, Izuhara-machi, Tsushima-shi, Tsushima Is ., Nagasaki, O . Tominaga leg . ( OMNH); 1 male, 24 July 1997, Sumo, Mitsushima-machi, Tsushima-shi, Tsushima Is ., Nagasaki, O . Tominaga leg . ( OMNH); 1 male, 26 July 1997, Mitake, Kamiagata-machi, Tsushima-shi, Tsushima Is ., Nagasaki, O . Tominaga leg . ( OMNH); 1 male, 20 June 2001, Saozaki, Kamiagata-machi, Tsushima-shi, Tsushima Is ., Nagasaki, R. Matsumoto leg . ( OMNH); 1 female, 20 June 2001, Unatsura, Kamiagata-machi, Tsushima-shi, Tsushima Is ., Nagasaki, R. Matsumoto leg . ( OMNH); 2 males, 9 August 2001, Takeshiki, Mitsushima-machi, Tsushima-shi, Tsushima Is ., Nagasaki, Y . Kawakami leg . ( OMNH); 2 females, 19 June 2022, Taterasan-rindo, Tsutsu, Izuhara-machi, Tsushima-shi, Tsushima Is ., Nagasaki, H . Ono leg . (MPIM-HN-004, 005).

Redescription. Head. Labrum brown to yellow with a black spot at middle. Clypeus and frons entirely yellow with one longitudinal black stripe. Vertex generally yellow with diamond-shaped black spot and few brown spots ( Fig. 12C, D View Fig ). Antennae: scape and pedicel yellow on ventral side, with brown spot on dorsal side ( Fig. 12A, C, D View Fig ). Flagellum black with 25–28 articles covered with short setae.

Thorax. Prothorax 2.4–4.1 mm long in males, 3.1–4.5 mm long in females, elongate, generally brown to blackish brown with sickle-shaped yellow spot on anterior half and yellow diagonal line from middle anterior to the posterior region on both sides ( Fig. 12B View Fig ). Meso- and metanotum generally yellow except on lateral regions.

Legs. Foreleg: coxa and trochanter entirely yellow or dark yellow. Femur with posterior surface entirely yellow, anterior surface with proximal one-third yellow and rest blackish brown to black. Dark yellow femoral major process at middle of femur length, posteroventral row of processes with posterior surface yellow and anterior surface entirely blackish brown present on distal half of femur length ( Fig. 12B View Fig ). Tibia to tarsus with posterior surface entirely yellow, those of anterior surface dark yellow to brown. Mid- and hindlegs: yellow, tarsal claws with four to six apical teeth, arolium present.

Wings. Forewing 8.5–14.0mm long in males, 9.2–16.5 mm long in females, elongate, membrane hyaline, venation generally black except dark yellow on wing base. Pterostigma yellow to dark brown. Radius Anterior (RA) and Radius Posteri- or (RP) veins partly fused at wing apex ( Fig. 12E View Fig ). Media (M) and Radius (R) fused along approximately basal one-quarter of wing length and M vein posteriorly retracted to Cubitus Anterior (CuA), forming small radial triangle (rt) ( Fig. 12E View Fig ). Hind wing 7.0– 11.5mm long in males, 8.5–13.5 mm long in females, elongate, membrane hyaline, venation generally black except dark yellow on wing base region. Pterostigma dark brown. RA and RP veins partly fused at wing apex ( Fig. 12F View Fig ). Cubitus Posterior (CuP) entirely fused with First anal vein (A1) at distal portion ( Fig. 12F View Fig ).

Abdomen. Tergite I generally blackish brown. Tergite II generally blackish brown or yellow with black stripes on lateral margins. Tergites III to VII yellow with black stripes at lateral and posterior margins. Tergite VIII entirely yellow. Sternite I generally yellow with black stripes on lateral and posterior margins. Sternites II to VII yellow to blackish brown with black stripes on lateral and posterior margins.

Male terminalia ( Fig. 13A–F View Fig ). Ectoproct elongate, finger-like shaped, covered with fine setae. Ventromedial lobe with short and thick setae. Sternite IX subpentagonal, apex rounded in ventral view, covered with fine setae. Gonostyli X sclerotised, long and thin, spine-like apex, with a pair of small sclerites at base of gonostyli X membrane. Gonocoxites X broadened at middle with two finger-like projections at apex. Median lobe of gonocoxites XI acuminate with earlike projections on both sides. Hypandrium internum in dorsal view elongate, triangular.

Female terminalia ( Fig. 13G–I View Fig ). Gonocoxites VIII narrow, setose. Gonapophyses VIII slightly protruding, setose sclerite. Ectoproct ellipsoid, covered with thin setae. Gonocoxites IX ellipsoid, covered with thin setae. Spermatheca strongly coiled, base of fertilisation canal duct narrow and curved, with two diverticula (dv) present.

Distribution. JAPAN: Kyushu (Tsushima Is.).

Remarks. New (2003) mentioned that this species is distributed also in Indonesia and Sri Lanka. However, it was excluded from the distribution areas in this paper due to doubtful identifications and very distant occurrences from the type locality.