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 Asarcus passarelliiPhotograph of male, old material, from Yamaguti & Pinto-da-Rocha, 2009 [1]. | |
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Asarcus passarellii (Mello-Leitão, 1941) is a species of the genus Asarcus C. L. Koch, 1839. Originally described in Cnemoleptes Mello-Leitão, 1941, which was later synonymized with Asarcus [1].
Description[]
According to Yamaguti & Pinto-da-Rocha 2009
Male: Measurements (N = 2). Dorsal scutum: length, 5.2 (6.8); width, 5.3 (6.8); anterior margin width, 2.2 (2.6); posterior margin width, 3.9 (4.7). Leg lengths: I, 14.3 (21.5); II, 37.3 (59.4); III, 24.9 (37.2); IV, 47.5 (93.0). Femora lengths: I, 3.8 (5.7); II, 10.9 (18.0); III, 7.7 (12.1); IV, 13.9 (28.0).
Dorsum (Figs 15, 36, 116). Ocularium unarmed. Free tergites II and III with median spine; extremely narrow and long in free tergite II (twice the length of the spine of free tergite III).
Legs (Figs 15, 53, 72, 116). Coxa IV with a few small granules on each side. Trochanter IV with three small ventral median spines. Tibia IV with a row of ventral granules. Metatarsus IV with rows of ventral granules.
Penis (Figs 99, 100). Dorsal process well developed and contiguous with the sack, pointed upwards. Ventral process with apex very wide, opened to 180°, very ramified. Stylus straight.
Coloration (in alcohol) (Fig. 116). Homogeneous yellow in entire dorsal scutum. Posterior margin of coxa IV, entire trochanter, and femur IV a little darker. Dorsal basal apophysis of trochanter IV darker, almost red. Mesotergum and dorsum of coxa IV covered with small black spots. According to the original description (Mello-Leitão, 1941), the body is homogeneous ‘burned’ yellow; sometimes the area IV and free tergites are black; stigmatic area with a black median line; femora reticulated with black; the other segments (of the legs) are black.
Dry marks (Fig. 116). Present on grooves, with two large stains laterally on area III. Stain in closed Y-shape behind ocularium.
Female (Figs19, 37, 57, 76, 120): Measurements (N = 1). Dorsal scutum: length, 6.2; width, 6.6; ante- rior margin width, 2.6; posterior margin width, 5.7. Leg lengths: I, 14.0; II, 28.9; III, 23.1; IV, 37.5. Femora lengths: I, 4.0; II, 9.9; III, 7.3; IV, 10.9. Trochanter IV with dorsal distal apophysis and ventral spines larger than male. Femur IV with a row of small distal outer spines and two ventral rows of small distal spines, curved apicad. Tibia IV and meta- tarsus IV without the rows of ventral spines.
Comparison: Differs from other Bourguyiinae species in having a very long and narrow spine on free tergite II, with a basal tubercle on each side (Figs 15, 116). Differs from other Asarcus species in having an unarmed ocularium. Male differs from other Bour- guyiine species in the dorsal process of the penis, which is very large and contiguous with the sac.
Remarks: Only the type series is known.