Myrsidea ochrolaemi Sychra, 2007

Valim, Michel P., Price, Roger D. & Johnson, Kevin P., 2011, New host records and descriptions of five new species of Myrsidea Waterston, 1915 (Phthiraptera: Menoponidae) from passerine birds (Aves: Passeriformes), Zootaxa 3097, pp. 1-19 : 2-3

Myrsidea ochrolaemi Sychra, 2007

( Figs. 3–6 , 9–12 , 16, 19 )

Type host. Automolus ochrolaemus (Tschudi, 1844) – the Buff-throated Foliage-gleaner ( Furnariidae ).

Female (n = 23). Habitus as in Figs. 3, 4 . Hypopharynx fully developed, DHS10, 0.05 long; DHS11, 0.10 long. Gula with 4 setae on each side (rarely 3 or 5 on one side). Metanotum with 11–17 setae on posterior margin. Metanotum and abdomen as in Fig. 9 . Tergites unmodified, of similar size, with conspicuous median gap in each tergal setal row limited to segments IV–VIII. Postspiracular setae shortest (0.10–0.14) on III, V and VI, longer (0.22) on I, and extremely long (0.32–0.58) on II, IV, VII and VIII. Each pleurite III–VII with about 5–7 short marginal setae. Anus with 40–47 ventral fringe setae, 38–48 dorsal.

The following chaetotaxic and morphometric data for female specimens are given separately for each host species:

From Automolus ochrolaemus (n = 6): Setae of femoral brush, 13–17. Tergal setae: I, 24–31; II, 26–31; III, 26– 29; IV, 23–31; V, 19–26; VI, 18–24; VII, 15–20; VIII, 8–12. Sternal setae: II, each aster of 5 setae (rarely 4 on one side), posterior margin with 10–12 and anteriorly with 8–10; III, 23–29; IV, 41–45; V, 41–48; VI, 40–42; VII, 19– 24; VIII–IX with 12–14 marginal and 17–22 anterior setae. Dimensions: TW, 0.47–0.50; HL, 0.33–0.34; PW, 0.32– 0.35; PSPL, 0.12; MW, 0.49–0.56; MSPL, 0.16–0.17; AWIV, 0.65–0.69; ANW, 0.25–0.27; TL, 1.57–1.67.

From Automolus infuscatus (Sclater, 1856) (n = 4): Setae of femoral brush, 12–17. Tergal setae: I, 26–30; II, 25–30; III, 26–28; IV, 22–29; V, 20–24; VI, 20–21; VII, 17–19; VIII, 10–13. Sternal setae: II, each aster of 5 setae, posterior margin with 10–12 and anteriorly with 7–8; III, 22–29; IV, 39–42; V, 40–45; VI, 36–40; VII, 22–25; VIII–IX with 12–15 marginal and 20–22 anterior setae. Dimensions: TW, 0.46–0.48; HL, 0.33; PW, 0.31–0.32; PSPL, 0.12; MW, 0.47–0.51; MSPL, 0.15–0.17; AWIV, 0.63–0.67; ANW, 0.24–0.27; TL, 1.46–1.55.

From Anabacerthia variegaticeps (Sclater, 1857) (n = 1): Setae of femoral brush, 14–15. Tergal setae: I, 35; II, 37; III, 29; IV, 28; V–VI, 22; VII, 17; VIII, 8. Sternal setae: II, each aster of 5 setae, posterior margin with 11 and anteriorly with 7; III, 25; IV, 46; V, 47; VI, 40; VII, 21; VIII–IX with 17 marginal and 22 anterior setae. Dimensions: TW, 0.50; HL, 0.34; PW, 0.32; PSPL, 0.13; MW, 0.54; MSPL, 0.17; AWIV, 0.70; ANW, 0.28; TL, 1.74.

Male (n = 20). Habitus as in Figs. 5 – 6 . Gula with 4 setae on each side (rarely 3 or 5 on one side). Metanotum with 11–13 setae on posterior margin, metasternal plate with 6–8 setae, as in Fig. 19 . Metanotum and abdomen as in Fig. 10 . With conspicuous median gap in each tergal setal row limited to segments III–VIII. Postspiracular setae as for female. Genitalia as in Fig. 11 , broad sac sclerite with concave lateral projections as in Fig. 12 .

The following chaetotaxic and morphometric data for male specimens are given separately for each host species:

From Automolus ochrolaemus (n = 6): Setae of femoral brush, 12–13. Tergal setae: I, 19–22; II, 20–23; III–IV, 19–24; V, 19–21; VI, 17–20; VII, 16–19; VIII, 10–13. Sternal setae: II, each aster of 5 setae (rarely 4 or 6 on one site), posterior margin with 11–15 and anteriorly with 8–13; III, 21–25; IV, 29–36; V, 31–35; VI, 29–34; VII, 20– 25; VIII, 10–12. Dimensions: TW, 0.44–0.46; HL, 0.30–0.32; PW, 0.30–0.31; PSPL, 0.10–0.12; MW, 0.40–0.43; MSPL, 0.13–0.14; AWIV, 0.49–0.52; GL, 0.42–0.48; GSL, 0.07–0.08; TL, 1.33–1.42.

From Automolus infuscatus (n = 4): Setae of femoral brush, 12–14. Tergal setae: I, 17–23; II, 19–22; III, 19– 24; IV, 19–21; V, 18–20; VI, 18–21; VII, 17–19; VIII, 10–12. Sternal setae: II, each aster of 5 setae, posterior margin with 11–13 and anteriorly with 8–9; III, 19–21; IV, 27–31; V, 29–32; VI, 27–32; VII, 20–23; VIII, 11–14. Dimensions: TW, 0.42–0.43; HL, 0.28–0.31; PW, 0.28–0.30; PSPL, 0.10–0.11; MW, 0.37–0.39; MSPL, 0.13–0.15; AWIV, 0.47–0.49; GL, 0.42–0.45; GSL, 0.06–0.07; TL, 1.27–1.31.

From Anabacerthia variegaticeps (n = 1): Setae of femoral brush, 12–14. Tergal setae: I, 22; II, 24; III-IV, 23; V–VI, 19; VII, 18; VIII, 11. Sternal setae: II, each aster of 5 setae, posterior margin with 12 and anteriorly with 11; III, 19; IV, 31; V, 34; VI, 29; VII, 22; VIII, 11. Dimensions: TW, 0.45; HL, 0.31; PW, 0.30; PSPL, 0.12; MW, 0.43; MSPL, 0.12; AWIV, 0.50; GL, 0.46; GSL, 0.07; TL, 1.38.

Material examined. 3 females (one female DNA voucher Mysp.Auoch.5.1.2006.16), ex Automolus ochrolaemus exsertus Bangs, 1901 , JMD867 FMNH # 410611, Panama: Charco Azul, 2 March 2006, K.P. Johnson coll.; 1 male and 1 female, ex A. ochrolaemus exsertus , JMD874 FMNH # 410616, Panama: Charco Azul, 2 March 2006, K.P. Johnson coll.; 1 male and 2 females, ex A. ochrolaemus, Fisher #1088, Costa Rica: Puntarenus, Monte Anivo Lodge, 13Km N. Portero Grande, 16 March 1995, R.C. Dalgleish coll.; 1 male and 2 females, ex. A. ochrolaemus , Peru: ExplorNapa Camp, Rio Nafa, SE Iquitos, 15 June 1989, R.C. Dalgleish coll.; 3 males and 1 female, ex. A. ochrolaemus, Fisher and JS #3082, Costa Rica: San Jose, Tinamaste, 12 km SW San Isidro de El General, 1 February 2000, R.C. Dalgleish coll.; 4 males and 4 females, ex A. ochrolaemus , Peru: Madre de Dios, Cerro de Pantiacolla, elev. 1030 m, above Palotoa river, 26 August 1985, D.H. Clayton coll., at FMNH; 1 male and 5 nymphs, ex A. ochrolaemus , #85-128, Peru: Madre de Dios, Hda. Amazonia, near Atalaya Ridge, elev. 550 m, 8 August 1985, D.H. Clayton coll., at FMNH; 8 males and 9 females, ex A. infuscatus , Venezuela: Edo. Bolívar, 60 km E Sta. Elena, January 1987, R.C. Dalgleish coll.; 1 male and 1 female, ex Anabacerthia variegaticeps , JK06-241, Panama: Fortuna, 25 February 2006, K.P. Johnson coll. Two pairs from A. ochrolaemus (no number, from Iquitos, Peru; and #3082, from San Jose, Costa Rica) in MZUSP, remaining specimens in INHS.

Remarks. This species was recently described (Sychra in Sychra et al. 2007). Although its description is precise enough to recognize the species, the original drawings were published in such small size and low quality that it is difficult to accurately interpret some structures. Therefore, we included new drawings for this species in order to avoid misidentifications resulting from incorrect interpretations of the original illustrations. Furthermore, due to our finding of this louse species on host species other than the type host, we have provided some chaetotaxic and morphometric data separately for specimens from the other hosts.

Figures

FIGURES 1 – 4. Myrsidea strobiloesternata: (1) female holotype; (2) male. Myrsidea ochrolaemi: (3) female holotype; (4) additional female from Automolus ochrolaemus.

FIGURES 5 – 8. Myrsidea ochrolaemi: (5) male paratype; (6) additional male from Automolus ochrolaemus. Myrsidea calvi: (7) female holotype; (8) male paratype.

FIGURES 9 – 14. Myrsidea ochrolaemi: (9) metathorax and dorsoventral abdomen of female; (10) metathorax and dorsoventral abdomen of male; (11) male genitalia; (12) male genital sac sclerite. Myrsidea waterstoni n. sp.: (13) metathorax and dorsoventral abdomen of female; (14) metathorax and dorsoventral abdomen of male.

FIGURES 15 – 21. Dorsal view of Myrsidea male terminalia: (15) M. strobiloesternata; (16) M. ochrolaemi from Anabacerthia variegaticeps; (17) M. waterstoni n. sp. Metasternal plate and sternite I of males: (18) M. strobiloesternata; (19) M. ochrolaemi; (20) M. waterstoni n. sp.; (21) M. meyi n. sp. Asterisk indicates an inferred tergal seta.