Passeroptes lioparis, Mu, Ning, Kuang, Xi-Jun, Liu, Huai & Wang, Zi-Ying, 2015

Mu, Ning, Kuang, Xi-Jun, Liu, Huai & Wang, Zi-Ying, 2015, Feather mites of the genus Passeroptes Fain (Acariformes: Dermationidae) from passerines (Aves: Passeriformes) of China, Zootaxa 3985 (1), pp. 53-68 : 55-57

Passeroptes lioparis sp. nov.

( Figs. 1 , 2 , 9 F, 12A–D)

Description. MALE (holotype). Body 165 long (150–165 in 6 paratypes) and 115 wide (110–115). Idiosomal shields devoid of ornamentation, soft idiosomal cuticle striated, without scales or tubercles. Dorsum. Distance between propodonotal and hysteronotal shields 18 (14–20). Propodonotal shield 36 long (26–36) and 45 wide (42– 45), its posterolateral extensions encompassing bases of setae se. Posterior margin of propodonotal shield straight. Setae se 60 long (52–62), se–se 40 long (38–41). Hysteronotal shield transversely separated at level of femora IV; its anterior part 45 long (42–50) and 87 (75–79) wide, its posterior part paired, 64 long (61–67) and 20 wide (22– 23). Maximal distance between posterior hysteronotal shields 27. Setae d2 present, 16 long, d2–d2 48. Humeral shields with bent extension, forming acute angle. Terminal cleft longer than its greatest width, 55 long (45–57). Opisthosomal lobes 47 long (40–54), and about 19 wide, posterior interlobar membranes entire, widely separated from each other; distance between lobes 14 (12–14). Venter. Coxal apodemes II to IV free. Genital arch as an inverted V with tips strongly curved laterally, 9 length and 15 width. Aedeagus 16 long (16–28). Adanal shields 23 long (28–30) and about 4 wide, forming “L” shape, subparallel to each other. Coxal apodeme IVa about 18 long and 3 wide. Diameter of adanal suckers about 8. Cupules ih situated posterior to adanal suckers, ih–ih 38. Legs. Legs III and IV subequal, 100 long (92–110). Femora III with 1 dorsal and 1 ventral moderately developed retrorse processes. Other processes on legs III and IV absent. Solenidion ω 1 I absent. Setae ba I, II absent. Tarsi IV slightly curved, 16 long, with 2 apices. Lengths of setae: cp 10 (84–94), c3 20 (22–32), h2 135 (125–135), h3 39 (40–45), ps1 10 (11–15), ps2 32 (29–33), d II 57 (53–58), d III 44 (47–61), ω 3 I 17 (15–16), ω 1 II 25 (21–23), φ I 32 (28–34), φ II 41 (44–48), φ III about 5, φ IV 24 (20–22), σ 1 I 28 (25–29), σ II about 5. Distances between setae: g–g 3, ps3–ps3 24 (26–27), g–ps3 34 (34–36), ps1–ps1 18 (13–19), h3–h3 26 (22–25), ps2–ps2 44 (42–46), h2–h2 40 (33–40), 4a– 4a 63 (62–65), 4b–4b 48 (46–58), d2–d2 47.

FEMALE (10 paratypes). Body 157–170 long and 120–130 wide. Idiosomal shields devoid of ornamentation, soft idiosomal cuticle without scales or tubercles. Dorsum. Distance between propodonotal and hysteronotal shields 21–25. Propodonotal shield 29–41 long and 45–52 wide. Posterolateral extensions encompassing bases of setae se. Posterior margin of propodonotal shield not straight. Setae se 42–52 long, se–se 47. Hysteronotal shield 69–73 long and 59–64 wide. Posterior angles of hysteronotal shield with oval-shaped extensions. Setae d2 present, 15 long, d2–d2 41–46. Humeral shields well developed, with bent extensions, forming acute angle. Venter. Coxal fields III closed. Adanal shields well developed, separated from each other. Setal bases ps3 situated on adanal shields. Tarsus IV about 44. Legs. Legs III and IV subequal, 105–120 long. Femora III and IV each with 1 dorsal and 1 ventral moderately developed retrorse processes. Other processes on legs III and IV absent. Setae ba I, II absent. Lengths of setae: cp 73–89, c 3 30–40, h2 140–165, h3 39–57, ps1 7, ps 2 27–41, d II 52 –71, d III 52 –65, ω 3 I 13–17, ω 1 II 19–21, φ I 33 –40, φ II 36 –39, φ III 2, φ IV 6, σ 1 I 21–27, σ II 7. Distance between setae: g–g 64, ps3–ps3 12, g–ps3 66, ps1–ps1 12, h3–h 3 22–34, ps2–ps2 32–34, h2–h 2 37, 4 a–4a 21–24, 4 b–4b 32–36, d2–d2 40–50.

Type material. Holotype male [IOZ(E) 227739], 6 male and 10 female paratypes ex Lioparus chrysotis (Blyth) ( Passeriformes : Paradoxornithidae ), CHINA: Yunnan, 24°52'48'' N, 102°49'51'' E, 5 May 2013, coll. X.-H. Su.

Etymology. The specific epithet derives from the generic name of the host.

Differential diagnosis. The new species is closest to Passeroptes formosus Wang and Mu, 2014 from Trochalopteron formosum formosum (Verreaux) ( Passeriformes : Leiothrichidae ) and Passeroptes viduicola Fain, 1965 from Vidua chalybeata (Statius Müller) ( Passeriformes : Viduidae ) ( Wang et al. 2014; Fain 1965). In these species, setae d2 are present, and the humeral shields have a bent extension; in males, the hysteronotal shield is transversely separated and only femora III have retrorse processes; in females, setal bases ps3 are situated on adanal shields, coxal fields III are closed, femora III and IV each bear one dorsal and one ventral moderately developed retrorse process, and tarsi IV are slightly curved, 16 long, with two apices.

The new species differs from P. formosus in the following features. In both sexes of P. lioparis sp. nov., setae se are long, about six times longer than si, and setae c2 and d2 are long, about 16; in males, coxal apodemes II to IV are free, the opisthosomal lobes, including the interlobar membrane, are not overlapping, and adanal shields are 23 (28-30) long, longer than coxal apodeme IVa; in females, setae si are situated off the propodonotal shields. The new species differs from P. viduicola in following features: setae se are long, about six times longer than si, the aedeagus is about 16 long, the adanal shields are 23 long (28–30) and about 4 wide, forming an “L” shape.

In both sexes of P. formosus , setae se are short, about twice longer than si, setae c2 and d2 are short, only 5 long; in males, the adanal shields are equal to coxal apodeme IVa, coxal fields III are opened in their anterior third and the interlobar membranes are overlapping; in females, setae si are situated on propodonotal shields. In both sexes of P. viduicola , setae se are about three times than si; in males, the aedeagus is very long, the extruded part is 66 long, the adanal shields are U-shaped with a broad base.

Figures

FIGURE 1. Passeroptes lioparis sp. nov., male. A—dorsal view, B—ventral view.

FIGURE 2. Passeroptes lioparis sp. nov., female. A—dorsal view, B—ventral view.

FIGURE 9. Passeroptes periparus sp. nov., male. A—leg I in dorsal view, B—leg II in dorsal view, C—leg III in dorsal view, D—leg IV in dorsal view, E—tarsus IV in dorsal view; F— Passeroptes lioparis, tarsus IV in dorsal view; G— Passeroptes motacillae, tarsus IV in dorsal view; H— Passeroptes cyanodermae, tarsus IV in dorsal view; I— Passeroptes aegithalos, tarsus IV in dorsal view.