Myrsidea rufi Price & Dalgleish, 2006

Myrsidea rufi Price & Dalgleish, 2006: 16, figs 22–23.

Type host. Tachyphonus rufus (Boddaert, 1783) —White-lined tanager ( Thraupidae).

Type locality. Arima, Simla, Trinidad.

Material examined. Ex Tachyphonus coronatus (Vieillot, 1822) —Ruby-crowned tanager ( Thraupidae): 1♀, 4♂, San Rafael National Park, Paraguay (26°30'S, 55°47'W), 18 & 22 Aug. 2012, I. Literak.

Remarks. Myrsidea rufi was described from Trinidad & Tobago and also found on the type host in Brazil (Silva 2013). This is the first record of M. rufi from Paraguay, and of a louse from Tachyphonus coronatus .

Our specimens differ from the original description of Myrsidea rufi by setal counts and dimensions, as follows (data from Price & Dalgleish 2006 are in parentheses):

Female (n = 1). Metanotum with 12 (8–10) setae on posterior margin. Tergal setae: I, 18 (14–16); II, 17 (9–13); VII, 7 (8–12); VIII, 4 (6–8). Sternal setae: VII, 9 (10–13). Dimensions: TW, 0.42 (0.46–0.49); AWIV, 0.55 (0.59– 0.64).

Male (n = 4). Metanotum with 8–10 (6–9) setae on posterior margin. Tergal setae: I, 14–17 (9–14); II, 12–13 (7–12); III, 12–15 (7–12); VI, 8–11 (7–10); VIII, 4 (6–7). Sternal setae: II, 4 setae in each aster, 13–16 marginal setae between asters, 6–8 anterior (together 27–32 vs. 22–26); V, 29–34 (30–35); VI, 25–28 (26–33); VII, 12–15 (13–19); VIII, 11–14 (5–9). Dimensions: MW, 0.34–0.38 (0.38–0.40); AWIV, 0.47–0.48 (0.48–0.53); TL, 1.25– 1.34 (1.28–1.34).