Myrsidea dolejskae Kounek and Sychra

Kounek, Filip, Sychra, Oldrich, Capek, Miroslav, Lipkova, Alexandra & Literak, Ivan, 2011, Chewing lice of the genus Myrsidea (Phthiraptera: Menoponidae) from the Cardinalidae, Emberizidae, Fringillidae and Thraupidae (Aves: Passeriformes) from Costa Rica, with descriptions of four new species, Zootaxa 3032, pp. 1-16 : 7

Myrsidea dolejskae Kounek and Sychra sp. nov.

( Figs. 4–6 )

Type host. Arremon brunneinucha (Lafresnaye) — Chestnut-capped Brush-Finch

Female (n = 5). This species belongs to the taciturni species group (sensu Price and Dalgleish 2007). Length of head seta 10, 0.035–0.040; seta 11, 0.110–0.115; ratio10/11, 0.30–0.36. Gula with 5 setae on each side. Metasternal plate with 8–10 setae; metanotum conspicuously enlarged, with 8–11 marginal setae.

Abdomen with tergites I–II strongly enlarged ( Fig. 4 ); tergite I with pronounced medioposterior convexity, II with widely rounded posterior margin, tergites III–V compressed by enlarged tergites I–II. Tergal setae, with median gap in each row: I, 33–35; II, 36–39; III, 35; IV, 31–37; V, 30–33; VI, 30; VII, 28–30; VIII, 23–25. Postspiracular setae extremely long (0.38–0.45) on II, IV and VIII; long (0.22–0.25) on I, III and VII and somewhat shorter (0.16–0.21) on V and VI. Sternal setae: II, 4 in each aster, 23–24 marginal between asters, 9–14 anterior; III, 21–25; IV, 28–33; V, 36–37; VI, 28–32; VII, 11–14; VIII–IX, 31–33; without medioanterior setae. Dimensions: TW, 0.47–0.50; HL, 0.30; PW, 0.30; MW, 0.48–0.49; AW, 0.63–0.65; TL, 1.50–1.53; ANW, 0.23–0.25.

Male (n = 5). Metasternal plate with 8–11 setae; metanotum with 12–15 marginal setae.

Tergal setae: I, 27–30; II, 29–36; III, 31–33; IV, 30–33; V, 30–32; VI, 29–31; VII, 29; VIII, 24–28.

Postspiracular setae extremely long (0.35–0.45) on II, IV and VIII; long (0.23–0.24) VII and shorter (0.15– 0.20) on I, III, V and VI. Sternite II slender strongly arched ( Fig. 5 ). Sternal setae: II, 3–4 in each aster, 19–20 marginal between asters, 16–20 anterior; III, 37–44; IV, 42–49; V, 41–49; VI, 39–48; VII, 37–43; VIII, 25–29; including medioanterior setae: III, 8–13; IV, 8–9; V, 5–9; VI, 5–10; VII, 8–12. Genital sac sclerite with very small pale and almost unvisible subapical projection on each side ( Fig. 6 ). Dimensions: TW, 0.45; HL, 0.29; PW, 0.29–0.31; MW, 0.38–0.41; AW, 0.48–0.50; TL, 1.35–1.40; GW, 0.12; GL, 0.45–0.48; GSL, 0.08.

Type material. Female holotype (O.Sychra CR114), ex Arremon brunneinucha (Emberizidae) , COSTA RICA: Braulio Carillo National Park, Sector Barva (10˚07’N, 84˚07’W; 2600m), 8 August 2010, Sychra and Literak leg. Paratypes: 4 females and 5 males with the same data as holotype, except the date: 2–8 August 2010. Deposited in INBio (O.Sychra CR114–116) and MZM (O.Sychra CR117–119).

Remarks. This is the second species of Myrsidea from Arremon brunneinucha . The female conspicuously differs from that of M. brunneinuchi described from Costa Rica and Venezuela ( Price and Dalgleish 2007) by a conspicuously enlarged metanotum and tergite I with pronounced medioposterior convexity. These characteristics place M. dolejskae sp. nov. close to M. campestris Price and Dalgleish, 2007 from Euneornis campestris and M. marini Price and Dalgleish, 2007 from Pezopetes capitalis (both from Emberizidae ). Both sexes of M. dolejskae sp. nov. are easily separated from those of aforementioned species by presence of continuous row of setae on each tergite (without well-developed median gap). The male of M. dolejskae sp. nov. is characterized by large number of setae on tergite VIII and sternite III. These characteristics place it very close to those of M. brunneinuchi but the male of M. dolejskae sp. nov. can be separated by larger number of setae on tergite I (27–30 vs. 22–26).

Etymology. This species is named in honor of Monika Dolejska, our colleague and friend, in recognition of her friendship.

Figures

FIGURES 1 – 6. 1 – 3. Myrsidea bidentata sp. nov. 1, Female (dorsal side on the left, ventral side on the right). 2, Male sternite II. 3, Male genital sac sclerite. 4 – 6. Myrsidea dolejskae sp. nov. 4, Female (dorsal side on the left, ventral side on the right). 5, Male sternite II. 6, Male genital sac sclerite. Scales 0.50 mm (Figs. 1, 4), 0.10 mm (Figs. 2, 5), 0.05 mm (Figs. 3, 6).