Myrsidea, Waterston, 1915

Ramon, Madrid, Soto, Old, Sychra, rich, Benedick, Suzan, Edwards, David P., Efeykin, Boris D., Fandrem, Marte, Haugaasen, Torbjørn, Teterina, Anastasia, Tomassi, Suzanne & Tolstenkov, Oleg, 2020, Diversity and host associations of Myrsidea chewing lice (Phthiraptera: Menoponidae) in the tropical rainforest of Malaysian Borneo, International Journal for Parasitology: Parasites and Wildlife 13, pp. 231-247 : 234-235

3.1.1. Myrsidea from bulbuls ( Pycnonotidae )

Myrsidea from bulbuls were revised by Hellenthal and Price (2003). Here we would like to update morphometric characters omitted by these authors. Because these characters are common to all the Myrsidea species from bulbuls mentioned below, they will not be repeated under these species.

Length of DHS 10, 0.025 –0.045; DHS 11, 0.075 –0.095; ratio DHS 10/ 11, 0.29–0.57. Labial setae 5 (ls5) short 0.02–0.04 long, latero-ventral fringe with 9–11 setae. First tibia with 3 outer ventro-lateral and 4 dorso-lateral setae. Metapleurites of females with 3 (rarely 4), those of males with only 2 short strong spiniform setae. Femur III with 12–18 setae in ventral setal brush.

Abdominal segments with well-defined median gap in each row of tergal setae. Postspiracular setae of females: very long on II, IV, VII and VIII (0.33–0.59); long to very long on III (0.27–0.52) and VI (0.25–0.44); and long on I (0.21–0.32). Contrary to Hellenthal and Price (2003) who mentioned very long postspiracular setae on all segments we found variable length of these setae on segment V: short (0.14–0.19) for M. eutiloti , M. johnsoni and M. ochracei from Alophoixus finschii ; long (0.28–0.30) for M. pycnonoti ; and very long (0.33–0.44) for M. ochraceus from Alophoixus bres . Similarly, postspiracular setae of males: very long on II, IV, VII and VIII (0.30–0.51); long to very long on III (0.22–0.49) and VI (0.20–0.36); long on I (0.19–0.31); and variably long on V: short (0.11–0.13) for M. johnsoni and M. ochracei from Alophoixus finschii ; long (0.19–0.25) for M. eutiloti , M. pycnonoti and M. ochraceus from Alophoixus bres .

Inner posterior seta of last tergum with length 0.06–0.14; length of short lateral marginal seta of last segment, 0.03–0.06. Pleurites I–VI with only short spine-like setae; pleurite VII with one conspicuously longer seta. Pleural setae: I, 2–4; II–V, 5–8; VI–VII, 4–7; VIII of female, 4 (rarely 5); and VIII of male, 3 (rarely 4). Anterior margin of sternal plate II with a medial notch. Aster setae length: s1, 0.07–0.13; s2, 0.05–0.10; s3, 0.03–0.07; s4, 0.03–0.06; s5 (rarely s6), 0.02–0.05. Remainder of subgenital plate of male (except those setae counted for sternite VIII) with 6–7 setae; with 3–4 setae on posterior margin and with 8–9 internal

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anal setae.