Syringophilopsis certhiae, Skoracki, Maciej, Hendricks, Sarah A. & Spicer, Greg S., 2011

Skoracki, Maciej, Hendricks, Sarah A. & Spicer, Greg S., 2011, Systematics of the genus Syringophilopsis Kethley, 1970 (Acari: Prostigmata: Syringophilidae) with description of three new species from North American passerines, Zootaxa 2793, pp. 1-22 : 6-9

Syringophilopsis certhiae sp. nov.

( Figs. 1–12 )

Description. FEMALE ( Figs. 1, 2 and 5–8 ). Total body length of holotype 920 (870–1005 in 4 paratypes). Gnathosoma . Infracapitulum apunctate. Hypostomal apex with 1 pair of short and sharp-ended protuberances ( Fig. 5 ). Each transverse branch of peritremes with 3 chambers, each longitudinal branch with 10–12 chambers ( Fig. 6 ). Length of stylophore and movable cheliceral digit 180 (180–190) and 120 (120–130), respectively. Idiosoma . Propodonotal shield sparsely punctate at lateral bands. Length ratio of setae vi:ve:si 1:2.3–2.9:3.9. Setae se and c1 situated at same transverse level or setae se located slightly anterior to level of setae c1. Hysteronotal shields present ( Fig. 7 ). Pygidial shield weakly sclerotized, apunctate. Setae f2 and h2 about 7 times longer than f1 and h1. Aggenital setae ag1 and ag2 subequal in length, or ag1 not significantly longer (1.2 times) than ag2. Genital setae g1 and g2 subequal in length, both 2.2–3 times shorter than ag2. Pseudanal setae ps1 and ps2 subequal in length. Coxal fields I–IV sparsely punctate. Setae 3c 1.3–1.4 times longer than 3b. Cuticular striations as in Figs 1 and 2 . Legs. Fan-like setae p’ and p” of legs III and IV with 11–12 tines ( Fig. 8 ). Setae tc”III–IV 1.5–1.8 times longer than tc’III–IV. Apodemes I fused to middle part of apodemes II. Lengths of setae: vi 70, ve 160 (205), si 270 (270– 320), se 270 (280), c1 295 (270), c2 275 (260), d1 270 (295), d2 245 (245), e 290 (340), f1 (70–80), f2 330 (365), h1 60 (60–80), h2 350 (430), ps1 and ps2 (35–40), g1 85 (75–85), g2 75 (70–75), ag1 225 (230–295), ag2 205 (230), ag3 245 (295), sc3 40 (40–50), sc4 45, tc’III– IV 55 (40–55), tc” III–IV 80 (70–80), 3b 105 (105), 3c 135 (130–150).

MALE ( Figs 3, 4 and 9–12 ). Total body length 645–695 in 5 paratypes. Gnathosoma . Infracapitulum apunctate. Hypostomal apex smooth ( Fig. 9 ). Each transverse branch of peritremes with 3-4 chambers, each longitudinal branch with 10–11 chambers ( Fig. 10 ). Length of stylophore and movable cheliceral digit 155–165 and 120–125, respectively. Idiosoma . Propodonotal shield punctate at lateral bands. Length ratio of setae vi:ve:si 1:1.5–1.9:3.7– 3.9. Setae se situated anterior to level of setae c1. Hysteronotal shield variable, sometimes fused to pygidial shield. Setae d2 1.3–1.4 times longer than setae d1 and e. Setae h 3.7–5 times longer than f. Aggenital setae ag1–3 subequal in length. Genital setae subequal ( Fig. 12 ). Pseudanal setae subequal in length. Aedeagus 370 long. Coxal fields I–IV covered by minute punctations. Setae 3c 1.6–2.3 times longer than 3b. Cuticular striations as in Figs. 3 and 4 . Legs. Fan-like setae p’ and p” of legs III and IV with 8–9 tines ( Fig. 11 ). Setae tc”III–IV 1.5–1.8 times longer than tc’III–IV. Apodemes I fused to middle part of apodemes II. Lengths of setae: vi 30–35, ve 45–65, si 130– 150, se 125–170, c1 120–160, c2 160, d 1 20–25, d 2 25–35, e 20–30, f 25–35, h 110–150, ag1 105–115, ag2 105, ag3 110–115, sc3 45–55, tc’III– IV 20–25, tc” III–IV 35–45, 3b 55, 3c 90–125.

Type material. Female holotype, 5 female, 4 male, and 6 nymph paratypes from quill of the Brown Creeper, Certhia americana Bonaparte (Certhiidae) ; United States, California, Monterey Co., 5 July 2001, coll. G. Spicer (GSS#98).

Type deposition. All material is deposited in the NMNH, except 2 female and 2 male paratypes in the AMU (AMU–SYR. 300).

Etymology. The species name refers to the generic name of the host.

Differential diagnosis. Syringophilopsis certhiae sp. nov. belongs to the turdus species group and is morphologically similar to S. sturni Chirov & Kravtsova, 1995 described ex Sturnus vulgaris Linnaeus (Sturnidae) from Kirghizia ( Chirov & Kravtsova 1995). In females of both species, the hypostomal apex is ornamented by 1 pair of protuberances, the hysteronotal shields are present, and aggenital setae ag1 and ag2 are subequal in length and much longer than genital setae. The new species is distinguished from S. sturni by the following characters: in females of S. certhiae sp. nov., the length of the stylophore and movable cheliceral digit are 180–190 and 120–130 respectively, and the length ratio of setae g1:ag2 is 1:2.2–3. In females of S. sturni , the length of stylophore and movable cheliceral digit are 230–245 and 175–185 respectively, and the length ratio of setae g1:ag2 is 1:3.5–4.

Figures

FIGURES 1, 2. Syringophilopsis certhiae sp. nov. Female. 1. Dorsal view. 2. Ventral view.

FIGURES 3, 4. Syringophilopsis certhiae sp. nov. Male. 3. Dorsal view. 4. Ventral view.

FIGURES 5 – 12. Syringophilopsis certhiae sp. nov. Female. 5. Hypostomal apex. 6. Peritreme. 7. Hysteronotal shield. 8. Fanlike seta p’ of leg III. Male. 9. Hypostomal apex. 10. Peritreme. 11. Fan-like seta p’ of leg III. 12. Genito-anal region. Scale bars: 5, 6, 8 – 12 = 20 µm; 7 = 50 µm.