Bolarga nigriloba Linnavuori, 1959

Bolarga nigriloba Linnavuori, 1959 View in CoL , combination reinstated

Fig. 13 View FIGURE 13

Bolarga nigriloba Linnavuori, 1956: 10 View in CoL . (nomen nudum: no description)

Bolarga nigriloba Linnavuori, 1956 View in CoL (unavailable or invalid, linked to Bolarga nigriloba Linnavuori, 1959 View in CoL ) in Linnavuori, 1956: 10.

Bolarga nigriloba Linnavuori, 1959: 92 View in CoL .

Daltonia nigriloba ( Linnavuori, 1959) View in CoL in DeLong, 1982: 616.

Material examined. 1♂: Cabañas, PARAGUAY [ new country record], Dist. Caacupe, Epto. Cordillera, 9 XII 1980 / RD Cave colr / Bolarga nigriloba Linnavuori, Det. J.N. Zahniser 2025 / USNMENT01513513 [ USNM]. 1♂: PARAGUAY: Central Dept. , San Lorenzo, 5 December 1986, J. Kochalka / Det. J.N. Zahniser 2021 / USNMENT01513072. 2♀, same data, USNMENT01513033 and USNMENT01513469 [ USNM].

Female. Abdominal sternites largely brown; with diffuse yellow markings laterally; with or without longitudinal narrow medial white band; posterior margins with narrow transverse band of white. Sternite VII mostly yellow, with some brown coloration anteriorly and with irregular brown macula medially at posterior margin. Posterior margin broadly excavated, medially with small tab-like production. Pygofer yellow with numerous brown markings; with numerous macrosetae on posterior half, some concentrated at apex but groups of setae not as well-defined as in B. boliviana .

Notes. Linnavuori (1959) described this species and originally placed it in Bolarga . DeLong (1982) transferred it to Daltonia Oman, 1949, a North American genus containing three species. However DeLong’s placement was based only on superficial similarity, stating only that B. nigriloba is “…similar in color, form, and appearance…” to Daltonia estacadus (Ball) . The more convincing placement is Bolarga , a South American genus of Deltocephalini . In contrast to Daltonia , B. nigriloba shares with the type species of Bolarga , B. boliviana , a more elongate and slender shape of the body, the unique produced ventral lobe of the pygofer ( Figs. 12D–E View FIGURE 12 , 13C View FIGURE 13 ) and aedeagus with a ventral unpaired, spinelike process ( Figs. 12E View FIGURE 12 , 13F View FIGURE 13 ). B. nigriloba therefore is here reinstated in its original genus.