Anthrax hylaios Marston 1970

Anthrax hylaios Marston, 1970

(Figs. 14 – 19)

Anthrax hylaios Marston, 1970: 43, 50­52; Painter, Painter & Hall, 1978: 32; Evenhuis & Greathead, 1999: 304.

Male: Length: 14.6 mm. Head width: 2.1 mm. Thorax width: 2.8 mm. Abdominal width 3.2 mm tapering to 2.5 mm on anal segment. Coloration: light brown; cephalic and anal tubercles and abdominal chitinous rods dark brown, darker apically; setae yellowish.

Head. Cephalic tubercles armed with three pairs of spines fused basally; first pair 1/5 times longer than second, and placed above them; third pair ½ length of first pair and placed laterally (Figs. 15 and 16). Central pair of spines with two pairs of setae, the first one on dorsal surface, near its base, second placed laterally on basal half of spine (Fig. 16). In ventral view, both anterior and posterior facial tubercles present, the first with a pair of setae placed laterally, additional pair on posterior margin (Fig. 17).

Thorax. With four pairs of setae, two pairs on dorsal surface placed close together, two pairs on lateral surface; prothoracic spiracle heavily sclerotized, dark brown, raised above surface and located immediately behind head (Fig. 14).

Abdomen. Segment I with transverse row of long setae, interrupted in center; segment II–V with transverse rows of chitinous rods intercalated with long, thin setae, row of setae interrupted in center; segments VI–VII with reduced chitinous rods, resembling small spines, intercalated with thin setae; segment VIII with row of reduced chitinous rods; pleura with tufts of strong and long setae, sternites with transverse rows of strong setae, interrupted in center; the row on segment VII is complete; anal tubercle with three pairs of spines, central pair completely fused, except at apex, with two pairs of projections, first pair located on the middle of the spine and second pair placed ventrally, near the base of each spine; second and third pairs of spines tiny and placed on the base of first pair, on dorsal and ventral surfaces respectively. Additional single spine on dorsal base of the tubercle (Figs. 18 and 19). Abdominal spiracles slightly darker and more sclerotized than surrounding area, raised above surface and placed laterally on segments I–VII.

Female: Sternite VIII without row of setae. (Length: 16.2 mm. Head width: 2.1 mm. Thorax width: 3.1 mm. Abdominal width: 3.5 mm tapering to 1.6 mm on anal segment) Hosts: Hymenoptera ­ Trypoxylon sp.; Tetrapedia garofaloi Moure, 1999; Tetrapedia diversipes Klug, 1810 and Tetrapedia sp. (Sphecidae).

Distribution: Neotropical: Brazil (Mato Grosso, Minas Gerais, Rio de Janeiro, Santa Catarina, São Paulo).

Examined material: BRAZIL, São Paulo: Jundiai (Serra do Japí), 30­ IX­1996, 1 female, Camilo, Augusto and Serrano leg. (MNRJ); São Paulo: Jundiaí (Serra do Japi), 27­ X­1996, 1 male, Camilo, Augusto and Serrano leg. (MNRJ).