Cyriotasiastes mindanaonis Medina, 2024

Cyriotasiastes mindanaonis Medina sp. nov.

Figure 1H View FIGURE 1 , Figure 2H View FIGURE 2 , Figure 3H View FIGURE 3

Holotype female: PHILIPPINES – Mindanao, Agusan del Sur / San Francisco // iv.2018, local coll. / DUBC, printed on red card. Type specimen will be deposited at the Philippine National Museum ( PNM).

Description. Measurements: Holotype female: LB (LH+LP+LE): 16.0 mm. LH: 2.0 mm. WH: 2.5 mm. LG: 1.0 mm. LL: 1.0 mm. WL: 1.0 mm. LP: 3.0 mm. WP: 5.0 mm. LE: 11.0 mm. WEH: 5.5 mm.

Adult female. Teguments of head, prothorax, and abdomen including legs and antennae matte black covered with fine black recumbent pubescence except coxa, underside of head dark brown. Antennae longer than elytra, antennomeres VII to XI exceeds elytra; scape parallel, slightly robust than antennomeres III to XI, dorsally with cicatrix. Pedicle short, globular. Antennomeres III to VI two-toned covered with whitish recumbent pubescence at basal third, the rest covered with black pubescence. Antennomeres III and IV subequal = 3.5mm. Antennomeres VII to XI covered with fine black recumbent pubescence.

Head.A slightly wider than long, dorsal and lateral sides densely covered with fine black recumbent pubescence, underside glabrous, dark brown. Eyes matte black, with two erect black supraorbital setae, lower eye lobe as long as wide. Genae as long as the lower eye lobe, sparsely covered with whitish pubescence. Frons matte black, covered with fine yellowish recumbent pubescence, slightly concave. Vertex steep, lined with a thin line of whitish pubescence from the side to back of antennal support, antennal support raised. Clypeus wider than long with few erect long yellowish setae, base matte black covered with black recumbent pubescence, apex lined with recumbent dark brown pubescence. Mandible matte black, lined with yellowish pubescence at lateral side near the base.

Prothorax. Pronotum wider than long, and each lateral margin armed and covered with a band of whitish recumbent pubescence; base lined with a thin band of recumbent whitish pubescence, the rest of the pronotum covered with fine black recumbent pubescence; disc with few shallow punctures. Propleuron and prosternum sparsely covered with fine recumbent whitish pubescence. Apical margin lined with semi-erect whitish pubescence; basal margin lined with thin recumbent whitish pubescence.

Elytra twice times longer than wide, densely covered with fine black recumbent pubescence; highly punctate from base towards apical third, finer at apex. With three white bands of recumbent whitish pubescence, S-shaped band at basal third, postmedian with broad and straight transverse band not reaching elytral suture, small relatively thick C-shaped band near apex (See Fig. 1H View FIGURE 1 ). Humeri angled, slightly raised. Elytra apex flat and sparsely lined with semi-erect whitish and blackish setae. Scutellum rounded covered with dense whitish recumbent pubescence.

Legs. Procoxae raised, dark brown densely covered with fine yellowish recumbent pubescence; middle and hind coxa not raised. Femora robust, densely covered with fine yellowish and whitish recumbent pubescence. Tibia covered with yellowish recumbent pubescence, with semi-erect setae concentrated at apical half. Tarsi and basal third of claw matte black, covered with semi-erect black setae; apical third of claw dark brown. Claw simple.

Mesosternum parallel, flat, angled as viewed laterally, covered with fine white recumbent pubescence. Mesepimeron as long as wide, slightly concave at median, sparsely covered with whitish and yellowish recumbent pubescence. Mesepisternum rectangular, covered with whitish and yellowish recumbent pubescence. Metepisternum triangular, sparsely covered with whitish and yellowish recumbent pubescence. Metaventrite as long as wide, basal half densely covered with whitish recumbent pubescence, apical half covered with black recumbent pubescence.

Adult male. Unknown.

Differential diagnosis. This new species is similar to the other four species of Cyriotasiastes in the Philippines for having three bands of whitish pubescence in the elytra; with dense punctures from the base to the apical third of the elytra, finer towards the apex; and body tapering towards the apex of elytra. The new species differs from C. rhetenor mindorensis for having two-toned antennomeres III to VI (vs. two-toned antennomeres III to VIII in C. mindorensis ). The bands of pubescence in the elytra are much thicker compared with C. rhetenor rhetenor . It is also distinct from C. rhetenor solsonanensis for having no long erect black setae at frons. And it is distinct from C. rhetenor panayensis for having an acute triangular shaped metepisternum, base without depression (vs. metepisternum elongated triangular shaped, base with depression in C. rhetenor panayensis ). See key to the species.

Etymology. This new species is named after the second biggest island of the Philippines, Mindanao.

Distribution. Philippines: Mindanao (Agusan del Sur, San Francesco).