Myrsidea violaceae Price and Dalgleish, 2006

Price, Roger D. & Dalgleish, Robert C., 2006, Myrsidea Waterston (Phthiraptera: Menoponidae) from tanagers (Passeriformes: Thraupidae), with descriptions of 18 new species, Zootaxa 1174, pp. 1-25 : 9-10

Myrsidea violaceae Price and Dalgleish , new species

Type host. Euphonia violacea (L.), Violaceous Euphonia .

Female (10). Metanotum not enlarged, with 9–11 marginal setae. Abdomen with tergites shaped much as in Fig. 10, with tergite I slightly enlarged with gently curved posterior margin, and at least II–III with small medioposterior convexity. Tergal setae: I, 11–13; II, 17–26; III–VI, 22–30; VII, 19–26; VIII, 14–18. Postspiracular setae extremely long on IV, very long on VII, and shorter on III and V–VI. Sternal setae: II, 26–32; III, 19–23; IV, 25– 32; V, 29–37; VI, 23–34; VII, 14–21; VIII–IX, 18–23. Dimensions: TW, 0.40–0.42; HL, 0.28–0.31; PW, 0.27–0.29; MW, 0.39–0.43; AWIV, 0.52–0.61; ANW, 0.18–0.21; TL, 1.39–1.48.

Male (10). Metanotum with 9–11 marginal setae. Tergal setae: I, 16–20; II, 22–29; III– IV, 25–30; V, 26–31; VI, 24–29; VII, 22–27; VIII, 18–22. Sternal setae: II, 26–32; III, 19– 25; IV, 21–29; V, 26–30; VI, 23–28; VII, 14–22; VIII, 7–11. Genital sac sclerite 0.080– 0.105 long, as in Fig. 7. Dimensions: TW, 0.36–0.39; HL, 0.26–0.29; PW, 0.24–0.27; MW, 0.32–0.35; AWIV, 0.39–0.43; TL, 1.11–1.21.

Type material. Holotype female, ex E. violacea , TRINIDAD: Simla Biological Station , 21 Mar 1978, R. C. Dalgleish 523 . Paratypes, all ex E. violacea : 5 females, 8 males, same data as holotype; 1 female, 2 males, Arima, Simla , 14 Mar 1976 , R. C. Dalgleish; 3 females, 3 males, Simla near Arima, 6 Mar 1980 , R. C. Dalgleish 667; 1 female, 2 males, same except 14 Mar 1980, 686; 3 females, 4 males, same except 18 Mar 1980, 691; 1 female, 2 males, same except 4 Mar 1980, 651 and 659; 3 females, same except 10 Mar 1980, 684; 3 females, 2 males, same except 12 Mar 1980, 708; 2 females, 3 males, same except 13 Mar 1980, 683 and 685; 3 females, 1 male, same except 16 Mar 1980, 703; 5 females, 3 males, same except 20 Mar 1980, 693 and 700; 2 females, 1 male, same except 21 Mar 1980, 699.

Remarks. Anatomically close to the preceding three species from Tangara species, M. violaceae has longer postspiracular setae on tergites IV and VII than M. bonariensis and smaller dimensions and fewer marginal metanotal and tergal setae than the other two species. Also, the male genital sac sclerite (Fig. 7) is contrasted to Figs. 3 , 11, and 23 of the other three species.

Price et al. (2003:128) erroneously cite Clay (1968:236) for the association of M. bonariensis with E. violacea . This host/louse association is not cited in that reference and must be corrected to read M. violaceae based on the above description.

Myrsidea melanopis Price and Dalgleish , new species (Fig. 12)

Type host. Schistochlamys melanopis (Latham) , Black­faced Tanager.

Female (10). Metanotum not enlarged, with 10–13 marginal setae. Abdomen (Fig. 12) with tergite I largest, I–III with evenly curved margins. Tergal setae: I, 10–12; II, 13–16; III–IV, 17–22; V–VI, 18–22; VII, 17–19; VIII, 11–14. Postspiracular setae extremely long on IV and VII, shortest on III and V–VI. Sternal setae: II, 27–33; III, 19–23; IV–V, 26–33; VI, 26–29; VII, 13–18; VIII–IX, 18–27. Dimensions: TW, 0.48–0.50; HL, 0.32–0.34; PW, 0.30–0.33; MW, 0.46–0.48; AWIV, 0.59–0.65; ANW, 0.21–0.24; TL, 1.46–1.59.

Male (10). Metanotum with 10–12 marginal setae. Tergal setae: I, 11–15; II, 18–22; III–V, 19–26; VI, 20–24; VII, 18–23; VIII, 13–17. Sternal setae: II, 22–28; III, 19–21; IV– V, 24–32; VI, 20–30; VII, 13–19; VIII, 6–8. Genital sac sclerite 0.075–0.095 long, as in Fig. 7. Dimensions: TW, 0.44–0.46; HL, 0.30–0.32; PW, 0.28–0.30; MW, 0.39–0.41; AWIV, 0.49–0.51; TL, 1.27–1.36.

Type material. Holotype female, ex S. melanopis , VENEZUELA: 60 km E Sta Elena, Edo Bolivar, Jan 1987, R. C. Dalgleish . Paratypes: 13 females, 11 males, same data as holotype .

Remarks. The large dimensions, coupled with the setal counts, will separate this species from all others of the group. The female is further distinguished by its large development of tergite I and the evenly curved posterior margins of tergites I–III.

Figures

FIGURES 1–6. 1–4, Myrsidea laciniaesternata. 1, Entire dorsoventral male. 2, Male genitalia. 3, Male genital sac sclerite. 4, Female metanotum and dorsoventral abdomen. 5–6, M. cyanocephalae. 5, Female metanotum and dorsal abdomen. 6, Male metanotum and dorsal abdomen.