Picobia lonchura , Skoracki, Maciej, Sikora, Bozena & Spicer, Greg S., 2016

Skoracki, Maciej, Sikora, Bozena & Spicer, Greg S., 2016, A review of the subfamily Picobiinae Johnston and Kethley, 1973 (Acariformes: Prostigmata: Syringophilidae), Zootaxa 4113 (1), pp. 1-95: 53-54

publication ID

http://doi.org/10.11646/zootaxa.4113.1.1

publication LSID

lsid:zoobank.org:pub:8B8CDC5A-304F-407F-A06F-F350F916DCD1

persistent identifier

http://treatment.plazi.org/id/58448787-A52C-3F01-8EF3-FD40FE8B5EA9

treatment provided by

Plazi

scientific name

Picobia lonchura
status

sp. nov.

Picobia lonchura  sp. nov.

( Figs. 40View FIGURE 40 and 41View FIGURE 41)

Description. FEMALE PF (holotype and 1 paratype). Gnathosoma  . Hypostomal apex rounded. Infracapitulum apunctate. Movable cheliceral digit edentate on proximal end. Each medial branch of peritremes with 5–6 chambers, each lateral branch with 6 striated chambers. Stylophore punctate. Idiosoma  . Two narrow, punctate, sabre-like propodonotal shield bearing setae ve and si, medial shield absent. Setae vi situated posterior to level of setae ve. Setae c 1 situated slightly anterior to level of setae se. Setae vi, ve and si strongly beaded. Pygidial shield well developed, with vertical furrow, double-leaf, covered with minute punctuations on whole surface. Setae ag 2 situated posterior to ag 1. Large, punctate genital plate bearing setae ag 1–2. Genital setae short, needle-like, situated on sharp-ended genital lobes. Coxal fields I –II sparsely punctate, III –IV densely punctate. Legs. Claws of legs III and IV equal in size. Solenidia σ on genua I blunt-ended. Measurements. Total body length 1,220 (2,030). Length of stylophore 330 (350). Lengths of setae: vi 165, ve (165), si 170 (190), se 285, c 1 300 (325), c 2 285 (295), d 1 320 (295), d 2 300 (300), e 2 310 (315), f 1 40 (30), f 2 90 (80), h 1 25 (20), h 2 460, ag 1 255 (235), ag 2 (90), ag 3 265 (255), g 1 15 (15), ps 1 12 (12), ps 2 15 (12–15). Length ratios of setae: vi:ve:si 1: 1: 1, d 2: e 2 1: 1, f 1: f 2 1: 2.3, f 1: h 1 1.5–1.6: 1, f 2: h 2 5: 1, h 1: h 2 1: 18.4, ag 1:ag 2:ag 3 2.6: 1: 2.8, g 1: ps 1: ps 2 1: 1: 1.

MALE (1 paratype). Gnathosoma  . Hypostomal apex rounded. Each medial branch of peritremes with 5–6 chambers, each lateral branch with 8 striated chambers. Idiosoma  . Propodonotal shield entire, shirt-like, punctate. Setae vi situated slightly posterior to level of setae ve. Setae c 1 situated anterior to level of setae se. Setae vi, ve and si lightly beaded. Hysteronotal shield deeply concave on anterior margin, punctate, bearing setae d 1 and e 2. Pygidial shield punctate. Two oval agenital plates punctate, bearing bases of setae ag 1 on posterior margin. Legs. Claws of legs III –IV equal in size. Solenidia σ on genua I blunt-ended. Measurements. Total body length 770. Length of stylophore 150. Lengths of setae: vi 110, ve 105, si 135, se 180, c 1 180, c 2 160, d 1 105, d 2 180, e 2 35, f 2 25, h 2 305, ag 1 135, ag 2 25. Length ratios of setae: vi:ve:si 1: 1: 1.2, d 2: d 1: e 2 5: 3: 1, ag 1: ag 2 5.4: 1.

Type material. Female holotype (PF), 1 female (PF) and 1 male paratypes from Lonchura  leucogastra (Blyth) ( Passeriformes  : Estrildidae  ), INDONESIA: Archipelago Java, 1908–1909, coll. Arnim.

Type deposition. All type specimens in AMU.

Differential diagnosis. Picobia lonchura  sp. nov. is morphologically most similar to P. hylocichlae Skoracki, Spicer and OConnor, 2014  . In females of both species, the hypostomal apex is rounded; the movable cheliceral digit is edentate on the proximal end; genital setae are short, needle-like and situated on small genital lobes. This new species differs from P. hylocichlae  as follow: in females of P. lonchura  , the lateral propodonotal shields bears setae ve and si; the medial propodonotal shield is absent; the pygidial shield is subdivided, double-leaf; setae vi, ve and si are strongly beaded; setae ag 1 and ag 2 are situated in the longitudinal row. In females of P. hylocichlae  , the lateral propodonotal shields bears setae ve, si and se; the medial propodonotal shield is present, oval and punctate; the pygidial shield is entire, not subdivided; setae vi, ve and si are lightly beaded; setae ag 2 are situated posterolateral to setae ag 1.

Etymology. The species name is derived from the generic name of the host— Lonchura  leucogastra, and is a noun in apposition.