Picisyringophilus kratos, Skoracki & Oconnor, 2010

Skoracki, Maciej & Oconnor, Barry, 2010, New taxa of quill mites (Acari: Cheyletoidea: Syringophilidae), Zootaxa 2341 (1), pp. 1-32 : 15-17

Picisyringophilus kratos sp. nov.

( Figs 36–48 )

Description. FEMALE ( Figs 36–42 ). Total body length of holotype 780 (680–760 in three paratypes). Gnathosoma . Infracapitulum without punctations. Each transverse branch of peritremes with 2–3 chambers, each longitudinal branch with 9–11 chambers ( Fig. 39 ). Stylet of movable digit 160 (160–170) long. Stylophore not punctated, 205 (205–215) long. Idiosoma . Propodonotal shield well sclerotized, punctated at lateral margins, deeply cleft on anterior margin, bearing bases of setae vi, ve, si, and c1. Setae se situated on or near this shield and distinctly anterior to level of setae c1. Length ratio of setae vi: ve: si 1:1.3:2.6–2.9. Hysteronotal shield situated between bases of setae d1 and e. Setae d2 situated equidistant between setae d2 and e. Pygidial shield well sclerotized, not punctated. Length ratio of setae d2: d1: e 1:1:1. Length ratio of setae h1: h2: f1: f2 1:2–3:1.8–2.3:2.3–2.8. Aggenital setae ag1 slightly (1.3–1.4 times) shorter than ag3, setae ag2 absent. Genital setae g2 1.5–1.7 times longer than g1. Genital plate absent ( Fig. 40 ). Pseudanal setae ps1 and ps2 subequal in length. Cuticular striations as in Figs 36 and 37 . Legs. Coxal fields of legs I–IV well sclerotized, without punctations. Apodemes of legs III and IV visible ( Fig. 37 ). Setae tc’ and tc” of legs III and IV subequal in length. Fan-like setae p’ and p” of legs III and IV with 6–8 tines each ( Fig. 41 ). Setae 3c 3–3.4 times longer than 3b. Solenidia of leg I as in Fig. 42 . Length of setae: vi 40 (40), ve 50 (50–55), si 105 (105–115), se 175 (170–200), c1 (225–240), c2 190 (180–215), d1 205 (180–215), d2 195 (170–190), e 225 (205–225), f1 245 (225–265), f2 320 (295–305), h1 135 (105–135), h2 340 (285–345), ps1 and ps2 30 (30), g1 50 (45–50), g2 75 (65–75), ag1 105 (100–115), ag3 150 (135–150), tc’III–IV 50 (55–65), tc”III–IV 50 (55– 65), 3b 30 (40), 3c 90 (115), sc3 25 (25).

MALE ( Figs 43–48 ). Total body length 655 in one paratype. Gnathosoma . Infracapitulum not punctated. Each transverse branch of peritremes with 2–3 chambers, each longitudinal branch with 10–11 chambers ( Fig. 44 ). Stylet of movable digit 155 long. Stylophore 175 long. Idiosoma . Propodonotal shield weakly sclerotized, deeply cleft on anterior margin, punctated at lateral margins, bearing bases of setae vi, ve, si, and c1. Setae se situated at lateral margins of this shield and anterior to level of setae c1. Length ratio of setae vi: ve: si 1:1.3:2.7. Hysteronotal shield not fused to pygidial shield, punctated at lateral margins, bearing bases of setae d1 and e. Setae d2 situated 1.7 times closer to d2 than to e. Setae d1, d2 and e subequal in length. Pygidial shield well sclerotized, bearing bases of terminal setae d and f. Setae h 5.7 times longer than f. Setae ag1 slightly (1.2 times) longer than ag3. Genital setae g1 and g2 situated at same transverse level ( Fig. 45 ). Cuticular striations as in Figs 47 and 48 . Legs. Apodemes I divergent, not fused to apodemes II. Solenidia of leg I as in Fig. 46 . Coxal fields of legs I–IV not punctated. Fan-like setae p’ and p” of legs III and IV with 7 tines each. Setae tc”III-IV slightly (1.2 times) longer than tc’III-IV. Setae 3c 3.5 times longer than 3b. Length of setae: vi 30, ve 40, si 80, se 110, c1 120, c2 110, d1 20, d2 20, e 20, f 30, h 170, ag1 30, ag3 25, tc’III–IV 55, tc”III–IV 65, 3b 20, 3c 70, sc3 and sc4 20.

Type material. Female holotype, 5 female, 1 male, 2 tritonymph paratypes ( BMOC 02–0608–001) ex. secondary quills of Picoides pubescens (Linnaeus) ( Piciformes : Picidae ), USA: Michigan, Washtenaw Co., 2 mi NW Dexter, 42 o 21.55’N, 83 o 55.01’W, 8 June 2002, coll. B.M. OConnor.

Type deposition. All material is deposited at UMMZ .

Etymology. The name kratos is derived from Kratos (or Cratos) " Gr. κράτος" the personification of strength and power in the ancient Greek mythology.

Figures

FIGURES 36, 37. Picisyringophilus kratos sp. n. Female. 36. Dorsal view. 37. Ventral view.

FIGURES 38–46. Picisyringophilus kratos sp. n. Female. 38. Hypostomal apex in dorsal view. 39. Peritremes. 40. Ventral view of opisthosoma. 41. Fan-like seta p’ of leg III. 42. Solenidia of leg I. Male. 43. Hypostomal apex in ventral view. 44. Peritremes. 45. Ano-genital opening. 46. Solenidia of leg I. Scale lines 20 µm (Figs 38, 39 and 41–46), 50 µm (Fig. 40).

FIGURES 47, 48. Picisyringophilus kratos sp. n. Male. 47. Dorsal view. 48. Ventral view.