Harpyrhynchoides actitis Bochkov

Bochkov, Andre V, Oconnor, Barry M. & Klompen, Hans, 2015, A review of the mite subfamily Harpirhynchinae (Acariformes: Harpirhynchidae) — parasites of New World birds (Aves: Neognathae), Zootaxa 4023 (1), pp. 1-130 : 23-25

Harpyrhynchoides actitis Bochkov , OConnor and Klompen sp. nov.

( Figs. 14 , 15 , 17 A–E)

Description. FEMALE (holotype, 7 paratypes, Figs. 14 , 17 A). Body, including gnathosoma, 265 long (260–280) and 235 wide (235–240). Gnathosoma about 75 long and 85 wide. Palp 37 long (37–40) and 30 wide (30–33), without lateral notches. Palpalae strongly different in shape ( Fig. 17 A): dG 12–13 long, with 5–7 pectinations, about 3 times thicker than dF 13–14 long and l”G, 7–8 long. Setae vF about 45 long, smooth. Subcapitulum ventrally without membranous projections. Peritrematal branch about 35 long. Idiosoma 185–190 long. Smooth cuticle between peritrematal branches and transverse striations apunctate. All dorsal setae slightly serrate. Setae vi absent. Dorsal shield unornamented, 150 long (150–165) and 200 wide (180–200), roughly octagonal; anterior margin slightly concave, posterior margin deeply concave. Idiosoma ventrally without scales or verrucosities, striated anterior to level of seta 1a bases and at level of setal bases 3a to pocket-like vulvar structure. Setae 1a situated slightly anterior to level of setal bases 1c. Setae 3a situated at level of coxal fields III. Distance between setal bases 3a about 4 times longer than between setal bases 1a. Ventral setae h1 present. Distances h1–h1 and h2– h2 subequal. Coxal fields I and II smooth. Vulvar pocket-like structure without long lateral longitudinal folds. Vulvar apodemes weakly developed but discernible. Posterior margin of idiosoma with pair of small ventro-medial protrusions. Setae ve, si, se, and c2 65–70 long—all serrate, h1 about 17, and h2 about 35. Solenidia ω 1 I and ω1 II 15–17 long, narrow straight and conical, with rounded apex. Empodium of tarsi I and II not elongated, only slightly longer or subequal to respective tarsus. Genua I and II with 3 setae (d, l’, v’), femora I and II with 2 setae (d and v), trochanters I and II with 1 seta (v). Apical segment of leg III with 5 setae; preapical segment with 2 setae. Leg IV with 2 segments; preapical segment with 1 seta; apical segment with 4 setae.

MALE (1 paratype, Figs. 15 , 17 B–E). Body, including gnathosoma, 235 long and 185 wide. Gnathosomal length and width subequal, about 65. Palp length and width subequal, about 30, without notches. Palpalae strongly different in shape ( Fig. 17 B): dG 15 long, 2–3 times thicker than dF 16 long and l”G 6 long. Setae vF 37 long, smooth. Subcapitulum ventrally as in female. Idiosoma 165 long. Smooth cuticle between peritrematal branches and transverse striations apunctate. Dorsal shield 135 long and 100 wide; with anterior almost straight, narrowed in posterior part (about 50 wide), posterior margin with 2 small lateral lobes. Aedeagus 50 long, destroyed. Genital opening situated in posterior quarter of dorsal shield. Genital arch about 40 long. Genital setae 8–10 long; setae g2 absent. Distance g1–g1 60 and g3–g3 35. Setae vi 30 long, smooth; ve, si, se, and c2 slightly serrate, 60–65 long. Idiosoma ventrally without scales or verrucosities, with 2 median unstriated plates, anterior plate 35 long in midline, situated immediately posterior to setal bases 1a; second plate 45 long in midline, situated immediately posterior to setal bases 3a. Coxal fields I and II smooth. Leg I and II setation as in female. Solenidia ω 1 I and ω1 II 17–19 long, narrow straight and conical, with rounded apex. Apical segment of leg III with 5 setae; preapical segment with 2 setae. Leg IV with 1 segment bearing 5 setae.

Type material. Holotype female ( OSAL 0077502), 7 female and 1 male paratypes ( OSAL 0 0 77503, 0077519–0077523, 0 0 83621, 0083622) from Actitis macularius (Linnaeus) ( Charadriiformes : Scolopacidae ), CANADA: British Columbia, Vancouver, 49.16°N, 122.86°W (GEOnet), 10 July 1960, coll. W.W. Moss.

Type deposition. Holotype and most of paratypes in OSAL, 1 female paratype in ZISP.

Etymology. The specific epithet is derived from the generic name of the host and is a noun in apposition. Hosts and distribution. Actitis macularius ( Charadriiformes : Scolopacidae ) from Canada (British Columbia) (present paper).

Differential diagnosis. This species differs from all other species of the group capellae by the absence of setae vi and setae 1a situated slightly anterior to the level of setal bases 1c in females and by the absence of setae g 2 in males. Among species of this group, females of the new species are closest to Harpyrhynchoides pluvialis sp. nov. and H. phalaropus Bochkov and Galloway, 2013 (males of these species are unknown) by setae dG being almost twice wider than dF. It differs from these species by the following features. In females of H. actitis sp. nov., setae dG are about 1.7 times longer than l”G (vs. 2.5 times shorter in H. pluvialis ), setae dF are subequal to dG (vs. three times longer in H. pluvialis and 1.5 times shorter in H. phalaropus ), the idiosoma ventrally is striated anterior to the level of seta 1a bases and at the level of setal bases 3a to the pocket-like vulvar structure (vs. almost fully striated in H. pluvialis and without striations between levels of setal bases 3a and pocket-like vulvar structure in H. phalaropus ).

Figures

FIGURE 14. Harpyrhynchoides actitis sp. nov., female: A—dorsal view; B—ventral view.

FIGURE 15. Harpyrhynchoides actitis sp. nov., male: A—dorsal view; B—ventral view.

FIGURE 17. Harpyrhynchoides actitis sp. nov., details (A – E): A—palp of female in dorsal view; B—palp of male in dorsal view; C—genital opening of male; D—solenidion ω 1 I of male; E—solenidion ω 1 II of male. Harpyrhynchoides pluvialis sp. nov., details of female (F – H): F—palp in dorsal view; G—solenidion ω 1 I; H—solenidion ω 1 II.