New picobiin mites (Acari: Syringophilidae: Picobiinae) associated with woodcreeper birds (Passeriformes: Dendrocolaptidae) Author Skoracki, Maciej Author Solarczyk, Piotr text Zootaxa 2012 3406 59 66 journal article 10.5281/zenodo.212790 7523d47a-bf8b-4cbd-b54f-6841fa4d939d 1175-5326 212790 Rafapicobia dendrocolaptesi sp. nov. ( Figs. 1–12 ) NON-PHYSOGASTRIC FEMALE, holotype . Total body length 505 ( 450–550 in 5 paratypes ). Gnathosoma . Each medial branch of peritremes with 4–5 chambers, each lateral branch short, with ill-defined chambers. Movable cheliceral digit edentate in posterior part. Stylophore 120 (120–130) long. Idiosoma . Propodonotal shield entire, shirtlike, punctate on whole surface, bearing bases of setae vi , ve , si , se, and c1 . Length ratio of setae vi : ve : si 1:1.3–1.6:2–2.5. Setae c1 and se situated at same transverse level. Setae vi , ve and si strongly beaded, c1 , c2 and se lightly beaded. Two small hysteronotal shields around bases of setae d1 present. Pygidial shield well developed, surface minutely punctate. Setae f2 4.8–5.5 times longer than f1 . Setae f1 about twice as long as h1 . Setae h2 more than 30 times longer than h1 . Aggenital plate absent. Aggenital setae ag1 situated anterior to level of setae ag2 . Setae ag1 and ag3 subequal in length, both more than 10 times longer than ag2 . Two pairs of pseudanal setae and 1 pair of genital setae short and subequal in length. All coxal fields well developed, I and II apunctate, III and IV punctate. Setae 3c about twice as long as 3b . Hysteronotal setae d1 , d2 , e2 lightly beaded. Legs . Most of dorsal and lateral setae of legs I–IV lightly beaded. Antaxial and paraxial members of claws III and IV subequal in size. Setae tc" of legs III–IV about 1.5 times longer than tc'III–IV . Lengths of setae: vi 30 (25–40), ve 55 (45–60), si 80 (75–80), se 140 (130–140), c1 210 (170–210), c2 190 (155–180), d1 125 (115–125), d2 190 (165–180), e2 180 (155–175), f1 25 (20–25), f2 135 (100–130), h1 (10), h2 385 (320–355), ps1 and ps2 7 (7), g1 15 (10–15), ag1 150 (130–145), ag2 15 (10–15), ag3 155 (130–150), tc'III– IV 35 (25–35), tc" III–IV 60 (50–60), 3b and 4b 30 (30), 3c and 4c 55 (55–60), l’RIII and l’RIV 20 (20). PHYSOGASTRIC FEMALE. Body bulb-shaped outline, 665–995 long in 2 paratypes . Morphology of body and legs as in non-physogastric form. MALE. Total body length 380–395 in 4 paratypes . Gnathosoma . Hypostomal apex tapering. Each medial branch of peritremes with 3–4 chambers, each lateral branch with ill-defined chambers. Movable cheliceral digit edentate in posterior part. Stylophore 90–100 long. Idiosoma . Propodonotal shield entire, punctate on whole surface, bearing all propodonotal setae except c2 . All propodonotal setae lightly beaded. Length ratio of setae vi : ve : si 1:2.3:4.3–5. Setae c1 and se situated at same transverse level. Hysteronotal shield well sclerotized, entire, punctate, not fused to pygidial shield. Setae d2 4.3–5.3 times longer than d1 and e2 . Pygidial shield well developed and punctate. Setae h2 more than 10 times longer than f2 . Two large aggenital plates present, bases of setae ag1 situated on posterior margin of these shields. Length ratio of setae ag1 : ag2 3.3–4.3:1. Coxal fields I–IV well developed, III and IV punctate. Setae 3c about twice as long as 3b . Legs . Most of dorsal and lateral setae of legs I–IV lightly beaded. Antaxial and paraxial members of claws III and IV subequal in size. Setae tc"III–IV about 1.5 times longer than tc'III–VI . Lengths of setae: vi 15–20 , ve 25–35, si 65–75, se 90–100, c1 105–125, c2 85–95, d 1 10–15, d2 65–80, e 2 10 –15, f2 15, h2 180–190, ag1 50–65, ag 2 10–15, tc'III– IV 20–25, tc" III–IV 30–40. Etymology. The name of this species refers to the generic name of the host— Dendrocolaptes . Type material. Female holotype (non-physogastric form) and paratypes : 5 females (non-physogastric form), 2 females (physogastric form) and 4 males from Dendrocolaptes platyrostris Spix (Dendrocolaptidae) ; PARA- GUAY : Apa-Bergland, 22 November 1931 , coll. Krieg. Host specimen deposited in the ZSM . Mites removed by M. Skoracki. Type material deposition. All type material is deposited in the AMU (Reg. No. AMU–SYR.377), except 1 female paratype (non-physogastric form) in the ZSM (Reg. No. ZSM 20112013 ) and 1 female paratype (non-physogastric form) in the ZISP (Reg. No. ZSM 20112012 ). Additional material. From Dendrocolaptes picumnus Lichtenstein (Dendrocolaptidae) : 3 females (physogastric form), 1 male , 3 nymphs and 1 larva; ARGENTINA : Jujuy Province, 14 July 1908 . Host specimen deposited in the ZSM . Mites removed by M. Skoracki. All material is deposited in the AMU (Reg. No. AMU–SYR.380). FIGURES 1, 2. Rafapicobia dendrocolaptesi sp. nov. , female. 1 , dorsal view; 2 , ventral view. FIGURES 3–10. Rafapicobia dendrocolaptesi sp. nov. , female ( 3–7 ). 3 , gnathosoma in ventral view; 4 , peritremes; 5 propodonotal setae vi and ve ; 6 , terminal part of opisthosoma in ventral view; 7 , solenidions of leg I. Male ( 8–10 ). 8 , hypostomal apex; 9 , peritremes; 10 , genito-anal region. Differential diagnosis. Rafapicobia dendrocolaptesi is morphologically similar to R. toxostoma Sikora et al., 2011 described from Toxostoma curvirostre (Swainson) ( Passeriformes : Mimidae ) from United States ( Sikora et al. 2011 ). In females of both species the propodonotal shield is entire and in males the hysteronotal shield is entire. This new species differs from R. toxostoma as follows: in females of R. dendrocolaptesi sp. nov. , the pygidial shield is densely punctuate on whole surface; a pair of small hysteronotal shields is present and bearing bases of setae d1 ; genital setae g1 are situated outside the genital plate; lengths of setae si and f2 are 75–80 and 100–135, respectively; in males, the aggenital plate is well developed. In females of R. toxostoma , the pygidial shield is apunctuate; the hysteronotal shields are absent; genital setae g1 are situated on the genital plate; lengths of setae si and f2 are 150–155 and 70–80, respectively; in males, the aggenital plate is absent.