Bryobia pritchardi Rimando, 1962

Li, Juan, Yi, Tian-Ci, Guo, Jian-Jun & Research, Dao-Chao Jin, 2019, Redescription of Bryobia pritchardi Rimando, 1962 (Acari: Tetranychidae), with an ontogeny of chaetotaxy, Acarologia 1962 (1), pp. 73-110 : 74-75

Bryobia pritchardi Rimando, 1962 ( Figs. 1–28 )

Material examined

Twenty-five females (slides NO. 1601090301–1601090325), seven males (1601090326– 1601090332), one deutonymph (1601090333), eight protonymphs (1601090334–1601090341) and ten larvae (1601090342–1601090352), collected from Drymaria cordata in Hainan Xinlong Tropical Botanical Garden, Hainan province, P. R. China, 106°16′39″E, 19°54′12″N, elevation 71 m, on 9 Jan. 2016, by Juan Li. The specimens studied are deposited in Institute of Entomology, Guizhou University, P. R. China ( GUGC). Holotype female, ex. Paederia foetida , from Lipa City, Batangas, Philippines, coll. L.C. Rimando, currently on loan to the Smithsonian in Washington D. C.

Diagnosis

With the generic characters and:

Female — Body subovate. Prodorsal setae each on four well-developed anterior lobes, of which inner row shares more or less triangular broad base and well separated distally, with obvious incision; dorsal transverse line reaching to the tops of the outer lobes and crossing or reaching up to the incision of inner lobes. The line joining tips of second pair of propodosomal seta (v 2) located on the outer lobes generally passes slightly under the bases of the first pair (v 1). Dorsal setae spatulate to orbicular, rough and serrate. Stylophore longer than wide. Peritreme anastomosed distally in hook-liked enlargement with a shallow incision. Ventral setae smooth and filiform with the exception of lanceolate and serrate 1c and 2b; sacculus elongate, constricted medially and bulbous distally. Leg segment setal formula as follows: trochanters 1–1–1–1; femora 16~17–10–5–5; genua 8–5–6–6; tibiae 15 (1 φ)–9–9–9; tarsi 19 (5 ω +2dup)–17 (0 ω +1dup)–15 (0 ω)–14 (1 ω).

Male — Prodorsal setae on weakly developed anterior lobes: inner lobes with large fused base, incision between median lobes wide and shallow; outer lobes on weak projectons. Leg segment setal formula as follows: trochanters 1–1–1–1; femora 16~17–10–5–5; genua 8–5–6– 6; tibiae 15 (1 φ)–9–9–9; tarsi 18(9 ω +2dup)–16(0 ω +1dup)–14 (1 ω)–14 (1 ω). Empodia I–IV same as that of females; shaft of aedeagus abruptly constricted towards its distal part, ending in needle-like round tip.

Figures

Figure 1 Bryobia pritchardi, female, A, dorsal idiosoma; B, setav2; C, seta sc1. Scale bars, A, 100 μm, B-C,10 μm.

Figure 2 Bryobia pritchardi, female, ventral view. Scale bar 100 μm.

Figure 3 Bryobia pritchardi, female, A, gnathosoma, dorsal view; B, D, spermatheca; C palp; E, distal portion of dorsal hysterosoma. Scale bars, A–B, 50 μm, C, 10 μm, D, 20 μm, E, 100 μm.

Figure 4 Bryobia pritchardi, system of tracheae, A, larva, B, protonymph, C, deutonymph, D, female, E, male. Scale bar 100 μm.

Figure 5 Bryobia pritchardi, A–E, propodosomal lobes, A, larva, B, protonymph, C, deutonymph, D, female, E, male; F–G, claw and empodium, F, claw and empodium I, G, claw and empodium II. Scale bars, A-E, 50 μm, F-G, 10 μm.

Figure 6 Bryobia pritchardi, female, A–C, legs I, D–E, leg II; left side legs. Scale bar 50 μm.

Figure 7 Bryobia pritchardi, female, A–B, legs III, D–E, leg IV; left side legs. Scale bar 50 μm.

Figure 8 Bryobia pritchardi, adult male, dorsal idiosoma. Scale bar 100 μm.

Figure 9 Bryobia pritchardi, adult male, ventral view. Scale bar 100 μm.

Figure 10 Bryobia pritchardi, adult male, A, gnathosoma, dorsal view; B, ventral view of genital region, C, palp, D–E, aedeagus, F, claw and empodium I, G, claw and empodium II. Scale bars, A–B, 50 μm, C–E, 20 μm, F–G 10 μm.

Figure 11 Bryobia pritchardi, male, A–C, legs I, right side leg; D–E, leg II, left side leg. Scale bar 100 μm.

Figure 12 Bryobia pritchardi, male, A–B, legs III, D–E, leg IV; right side legs. Scale bar 50 μm.

Figure 13 Bryobia pritchardi, deutonymph, dorsal idiosoma. Scale bar 100 μm.

Figure 14 Bryobia pritchardi, deutonymph, ventral view. Scale bar 100 μm.

Figure 15 Bryobia pritchardi, deutonymph, A–E, legs I–IV: leg I, II and IV, right side legs; leg III, left side leg. Scale bar 50 μm.

Figure 16 Bryobia pritchardi, protonymph, dorsal idiosoma. Scale bar 100 μm.

Figure 17 Bryobia pritchardi, protonymph, ventral view. Scale bar 100 μm.

Figure 18 Bryobia pritchardi, protonymph, A–D, legs I–IV: leg I and IV, left side legs; leg II–III, right side legs. Scale bar 50 μm.

Figure 19 Bryobia pritchardi, larva, dorsal idiosoma. Scale bar 100 μm.

Figure 20 Bryobia pritchardi, larva, ventral view. Scale bar 100 μm.

Figure 21 Bryobia pritchardi, larva, A–C, legs I–III: right sides legs. Scale bar 50 μm.

Figure 22 Bryobia pritchardi, deutonymph, C, gnathosoma, dorsal view; protonymph, A, gnathosoma, dorsal view, D, palp; larva, B, gnathosoma, dorsal view, E, palp. Scale bars A–B 50 μm, C–E 20 μm.

Figure 23 Bryobia pritchardi, setae number of female femur I: A, 15 setae; B, 16 setae; C, 17 setae. Invariable setae (d, v′–v″, l′–l″, bv″, bv′1, bl′1–bl″1) are shown with the frames; the remaining setae always vary in position and number.

Figure 24 Bryobia pritchardi, photographs. Female holotype: A, genital and anal region; B, the dorsum betweenc1 to e1; C, prodorsum; D, the dorsum betweenc1 to e1. Scale bars A–D 50 μm.

Figure 25 Bryobia pritchardi, photographs. Female holotype: A, propodosomal striae; B, opisthosoma posterior section; C palp dorsal view; D, palp ventral view; E, propodosomal projections (v1 andv2). Scale bars A–B, E 50 μm; C–D, 20 μm.

Figure 26 Bryobia pritchardi, photographs. Ventral views of hysterosoma: A, protonymph; B, deutonymph. Female: C, genital and anal region; D, the dorsal striae betweencs1 to sc2. Scale bars A–C, 10 μm; D, 50 μm.

Figure 27 Bryobia pritchardi, photographs. Male: A–C, opisthosomal venters showing setation of genital areas of different specimens. Scale bars A–C, 10 μm.

Figure 28 Bryobia pritchardi, photographs. Female: A, palp ventral view; B, palp dorsal view; C, the dorsalsc2 setae. Scale bars A–C, 10