Myrsidea zuzanae, Kolencik & Sychra & Papousek & Kuabara & Valim & Literak, 2018

Kolencik, Stanislav, Sychra, Oldrich, Papousek, Ivo, Kuabara, Kamila M. D., Valim, Michel P. & Literak, Ivan, 2018, New species and additional data on the chewing louse genus Myrsidea (Phthiraptera: Menoponidae) from wild Neotropical Passeriformes (Aves), Zootaxa 4418 (5), pp. 401-431 : 416-417

Myrsidea zuzanae , new species

( Figs 5 , 12–13 , 24–25 )

Type host. Furnarius rufus (J.F. Gmelin, 1788) —rufous hornero.

Type locality. Los Tres Gigantes Biological Station in the Paraguayan Pantanal, Paraguay (20°04'S, 50°09'W).

Type material. Ex Furnarius rufus : holotype ♀, Los Tres Gigantes Biological Station in the Paraguayan Pantanal, Paraguay (20°04'S, 50°09'W), 6–7 August 2012, I. Literak ( MMBC) . Paratypes: 1♀, 2♂ with the same data as holotype ( MMBC) .

Diagnosis. Myrsidea zuzanae n. sp. shares the same type of male genital sac sclerite as other Myrsidea from the Furnariidae , but it can be easily distinguished from them by its unique modification of female tergites, especially II being the only tergite with a prominent medioposterior convexity ( Fig. 5 ). However, among species of Neotropical Myrsidea from other bird families, M. zuzanae has a similar modification of female tergites as that of M. rufi Price & Dalgleish, 2006 and M. phoenicii Price & Dalgleish, 2006 from the Thraupidae . However, males of these two species have a completely different type of genital sac sclerite. In addition, females of M. zuzanae differ from those of M. rufi by (1) fewer setae on tergite VIII (4–5 in M. zuzanae vs 6–8 in M. rufi ), and (2) more setae on sternites III–V (total 11 7–124 in M. zuzanae vs 85–97 in M. rufi ). Also, it differs from females of M. phoenicii by (1) more setae on tergite I (14–19 in M. zuzanae vs 10–12 in M. phoenicii ), (2) more setae on sternites III–V (total 117–124 in M. zuzanae vs 72–95 in M. phoenicii ), and (3) fewer setae on tergite VIII (4–5 in M. zuzanae vs 6–8 in M. phoenicii ).

Description. Female (n = 2). As in Figs 5 and 24 . Hypopharyngeal sclerites fully developed. Length of dhs 10, 0.060–0.065; dhs 11, 0.102–0.105; ratio dhs 10/11, 0.36–0.57; ls5 0.06 long, latero-ventral fringe with 10–11 setae. Gula with 4 setae on each side. Pronotum with 6 setae on posterior margin and 3 short spiniform setae at each lateral corner. First tibia with 3 outer ventro-lateral and 4 dorso-lateral setae. Metanotum not enlarged, with 11–12 marginal setae; metasternal plate with 6 setae; metapleurites with 3–4 short strong spiniform setae. Femur III with 19–21 setae in ventral setal brush. Tergites modified as follows: tergite II with prominent medioposterior convexity and tergite III with widely rounded posterior margin ( Fig. 5 ). Abdominal segments with well-defined median gap in row of tergal setae II–VIII. Tergal setae: I, 14–19; II, 12–13; III, 10; IV, 10; V, 12–13; VI, 12; VII, 12; VIII, 4–5. Postspiracular setae very long on I, II, IV, VII and VIII (0.31–0.46); and short on III, V–VI (0.16–0.27). Inner posterior seta of last tergum not longer than anal fringe setae with length 0.03; length of short lateral marginal seta of last segment, 0.04. Pleural setae: I, 6–7; II, 7–9; III, 8–9; IV, 6–9; V, 6–7; VI, 5–6; VII, 4–5; VIII, 3. Pleurites with only short spine-like setae. Pleurite VIII with inner setae (0.04) as long as outer (0.04–0.05). Anterior margin of sternal plate II with a medial notch. Sternal setae: I, 0; II, 4 in each aster: s1, 0.09–0.10; s2, 0.05–0.06; s3, 0.05; s4, 0.03; with 13–14 marginal setae between asters, 2–5 medioanterior; III, 30–33; IV, 43–47; V, 44; VI, 27–29; VII, 15; VIII–IX, 9; and 11–13 setae on deeply serrated vulvar margin; without medioanterior setae on sternites. Anal fringe formed by 40 dorsal and 36 ventral setae. Dimensions: TW, 0.45–0.46; POW, 0.35–0.36; HL, 0.30– 0.32; PW, 0.29; MW, 0.45–0.46; AWIV, 0.63–0.65; ANW, 0.23; TL, 1.52–1.58.

Male (n = 2). As in Fig. 25 . As for female, except as follows: length of dhs 10, 0.060; dhs 11, 0.95–0.98; ratio dhs 10/11, 0.61–0.63; ls5 0.04–0.06 long, latero-ventral fringe with 10–11 setae. Gula with 2–4 setae on each side. Metanotum not enlarged with 8–9 marginal setae; metasternal plate with 6 setae; metapleurites with 3–4 short spiniform strong setae. Femur III with 14–17 setae in ventral setal brush. Abdominal segments with well-defined median gap in each row of tergal setae. Tergal setae: I, 6–7; II, 8–11; III, 7–8; IV–V, 8; VI–VII, 7–8; VIII, 4. Postspiracular setae very long on II, IV, VII and VIII (0.42–0.45); long on I (0.29); and short on III, V and VI (0.13–0.23). Length of inner posterior seta of last tergum, 0.045–0.070; short lateral marginal seta of last segment, 0.020–0.025. Pleural setae: I, 4–5; II, 6–7; III, 5–6; IV, 5–6; V, 5–6; VI, 4; VII, 2–4; VIII, 3. Pleurite VIII with inner setae (0.03–0.04) as long as outer (0.03–0.04). Anterior margin of sternal plate II with a medial notch. Sternal setae: I, 0; II, 4 in each aster: s1, 0.07–0.11; s2, 0.05–0.06; s3, 0.04–0.05; s4, 0.03–0.04; with 12–14 marginal setae between asters, 4 medioanterior; III, 20–21; IV, 28–33; V, 33; VI, 26; VII, 15; VIII, 5–7; remainder of plate, 7–8; and with 3 setae posteriorly; without medioanterior setae on sternites. With 8 internal anal setae. Genital sac sclerite as in Figs 12–13 . Dimensions: TW, 0.42; POW, 0.32–0.33; HL, 0.28–0.29; PW, 0.26–0.27; MW, 0.37–0.38; AWIV, 0.48–0.53; GW, 0.10–0.11; GSL, 0.08; TL, 1.28–1.36.

Etymology. This species is named in honour of Zuzana Kokeš, the sister of the first author, in recognition of her great support during his life.

Remarks. This is the first record of Myrsidea from Furnarius rufus . A portion of COI gene was sequenced from specimens of M. zuzanae from Paraguay (GenBank MF563531 ). Comparing our sequence with other known sequences of Neotropical Myrsidea , the divergences exceeded 19% in all cases. However, comparing our sequence of M. zuzanae with all known Myrsidea , the closest was that of M. marksi Johnson & Price, 2006 (ex Phyllastrephus albigularis (Sharpe, 1882) , family Pycnonotidae , from the Democratic Republic of the Congo, GenBank KU187279 – KU187280 ), with a p-distance of 17.9%. These sequence divergences are large enough to confirm M. zuzanae as a new, separate species.

Figures

FIGURES 4–5. Dorso-ventral views of female thorax and abdomen:4, Myrsidea scleruri n. sp.; 5, Myrsidea zuzanae n. sp.

FIGURES6–17.Male genital sac sclerites:6–7, Myrsidea leucophthalmi n. sp.; 8–10, Myrsidea philydori n. sp.; 11, Myrsidea scleruri n. sp.; 12–13, Myrsidea zuzanae n. sp.; 14–17, Myrsidea pyriglenae n. sp.

FIGURES 22–25. Habitus: Myrsidea scleruri n. sp.: 22, holotype female; 23, paratype male; Myrsidea zuzanae n. sp.: 24, holotype female; 25, paratype male.