Andocaeculus weyrauchi
Creators: name: Porta, Andrés O.
name: Pizarro-Araya, Jaime
name: Ramírez, Martín J.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Acari
Caeculidae
Andocaeculus
Andocaeculus weyrauchi

description: Andocaeculus weyrauchi (Franz, 1964)
(Figs 2–17)
Microcaeculus weyrauchi Franz, 1964: 89–90; Taylor, Gunawardene and Kinnear, 2013: 449.
A. weyrauchi, Coineau 1974a: 279.
Type material. Type series from “ Puna El Infernillo in 3000 m Seehöhe am Fusse von flechtenbewachsenen Felsblöcken aus Moos, Rasen und Erde unter diesem am 13. 9. 1963 gesiebt ”, Herbert Franz collector, not examined (it should be deposited in MNHN, not found).
Examined material. 4 females (MACN-Ar 41058, 41059, 41135, 41136), Argentina, Provincia de Tucumán, Abra el Infiernillo, S26.74272°, W065.77283° (+/- 50 m), alt. 3012 masl (GPS), under stones, hand collected and on litter of xeric vegetation, extracted with Berlese funnels, A. Porta leg., cleared with lactic acid, preserved in alcohol; 1 adult (MACN-Ar 41056), same data, not cleared, preserved in alcohol; 2 adults (MACN-Ar 41058), same data. preserved in alcohol; 10 adults in a vial (MACN-Ar 4134), same data, preserved in alcohol; 1 larva (MACN-Ar 41065), same data, mounted on slide; 4 protonymphs (MACN-Ar 41066 to 41069), same data, mounted on slides; 2 deutonymphs (MACN-Ar 41070 and 41071), same data, mounted on slides; 6 tritonymphs (MACN-Ar 41072 to 41077), same data, mounted on slides; 14 females (MACN-Ar 41060 to 41065, 41126 to 41033), same data, mounted on slides; 1 male (MACN-Ar 41078), same data, mounted on slide; 3 individual stubs with exemplars mounted for SEM (MACN-Ar 41057), same data; 5 individuals, (MACN-Ar 41079 to 41083), vouchers of BOLDSYSTEM data SPDAR1609-16 to 1609-20, same data, preserved in alcohol; 2 adults in a vial (FML-Ar 00286), same data, preserved in alcohol.
Remark. The examined material has been assigned to A. weyrauchi on the basis of being the only species collected in the type locality and because it exhibits a morphology that corresponds exactly with that of A. weyrauchi in Franz’s description.
Diagnosis. A. weyrauchi differs from other species of the group by the following combination of characters: subtrapezoidal form of the idiosoma (Figs. 3, 4); anterior margin of aspidosoma straight (Fig. 5A); palp tarsus with 4 eupathidia; opisthosoma with a relatively less regressive chaetotaxy (Figs. 3 and 4): most setae normal-sized, elongated, b2 and c2 present in some exemplars, neotrichy sometimes present on d2 seta sector (Fig. 3 and 4); with four pairs of setae on P plates, setae e2 and e2’ with e2” separated by ridges (Fig. 4); setae of series v’ on basi and telofemur I of adults, elongated, distally blunt, relatively long for the group, 54–66 and 80–96 + long in females, RBaf: 0.52–0.6, RBaf +: 0.75–0.9, RTef: 0.5–0.57, RTef +: 0.75–0.84; genua I and II with 3 and tibiae I and II with 2 regressive setae of series d (Figs. 9D and 10 D); setae of series v’ on genua and tibiae I and II pointed; setae l1’ always eupathidial on leg I and II (Figs. 9A–J); solenidion present on tibia IV (Figs. 11B, 13 B–C), RTi3: 2.6–4.3.
Redescription
Female (n=14). Color (Fig. 2). Gnathosoma and dorsal sclerotized plates on idiosoma brown, membranous integument pale cream, legs and hypostome dark brown.
Gnathosoma (Figs. 3, 5). Covered by aspidosoma in dorsal view. Chelicera (Fig. 5A) typical for family, 54–58 wide at base, 132–170 long, movable digit hook-like with 3 minute teeth; cheliceral seta ch slender, 6 long. Palp (Figs. 14B, 15) 4-segmented, trochanter glabrous, femorogenu with 2 clavate setae in dorsal series, d1 26–40 long, d, 42–54 long; tibia with two calcars l’ and d, with d on projecting tubercle and 3 clavate setae d1, ld and l”, setal lengths, l’: 24–30, l”: 30–36, ld: 30–38, d: 26–33, d1: 26–34. Tarsus subconical, 42–54 long, 16–22 wide at base, solenidion ω present on antiaxial face, with 6–7 setae, v, l1’, l ” in addition to 4 eupathidia, (u), l’ and d. Subcapitulum (Figs. 6, 7) posteriorly rounded, anteriorly subconical, 148–230 wide at level of palp insertion, 146–170 long, setae m 22 long, anterior to n, 22 long, two pairs of adoral setae or 1–2, 12–14 long.
Idiosoma. In dorsal view subtrapezoidal (Figs. 3, 4), 860–1110 long, 593–790 wide at level of coxa IV.
Aspidosoma (Fig. 5). Subtrapezoidal, 284–324 long, posterior margin 221–276 wide, anterior margin 70–90 wide, projecting horizontally over gnathosoma. Anterior margin straight, with a central depression. Seta Po (Fig. 5D) 100–120 long, expanded distally, with anterior third setulate, dorsally visible from anterior margin of aspidosoma. Trichobothrial seta bo spatulate, 90–104 long, distal half upturned, broadening at tip (Fig. 5D). Aspidosomal setation regressive, Pa (Fig. 5B) regressive, subcylindrical, 10–12 long, located on a transversal ridge that is united in some exemplars to longitudinal ridge; Pm regressive (Fig. 5C), cylindrical, 10–11 long, on lateral border, setae Pp absent. Lateral eye plates separated from other plates; anterior pair of lateral eyes 18–24 diameter, posterior pair 24–32 (Fig. 5A), median eye 40 long, 60 wide.
Hysterosoma. Dorsal view. With 5 dorsal plates D, (L), M and P (Figs. 3, 4). Dorsal plate D subtrapezoidal, 279–398 long, anterior margin 184–232 long, posterior margin 280–320 long, with one longitudinal and two transversal and ridges, setae a1, b1, c1, ellipsoidal, lengths a1: 24–39, b1: 28–36, c1: 36–50; distance between setal insertions a1-a1: 106–130, b1-b1: 64–80, c1-c1: 80–98, a1-b1: 116–142, b1-c1: 108–152. Paired plates L 344–440 long, 74–100 wide; a2 regressive, 12–28 long; b2 present with p=0.36 (n=14), 32–40 long, c2 when present (p=0.43, n=14) ellipsoidal, 24–40 long; lyrifissure ia located on external side of plate, halfway between a2 and b2, 24–34 long; lyrifissure im located on median line of plate, halfway between b2 and c2, 12–18 long. Median plates M fused, with d1, d2 46–60 and 30–52 long, respectively; sometimes with neotrichy (p=0.29, n=14) on d2 sector; distance between setal insertions d1-d1: 122–178, d1-d2: 126–154, d2-d2: 308–434. Posterior plate P divided by ridges, setae e1, e2, e2’ and e2”, 50–58, 34–44, 32–44 and 30–40 long, respectively. Setae e2’ and e2” inserted on different sector of plate, which is separated by a ridge from e2; distance between setal insertions e1-e1: 110–138, e1-e2: 84–94. Seta hs on posterior border of idiosoma, 40–46 long.
Ventral view, podosoma and opisthosoma (Fig. 6, 7). Membranous integument striate. Coxal setation formula 4:3:4:2–3, coxal setae clavate; their lengths, 1a: 20–28, 1b: 26–34, 1c: 32–38, 1d: 42–46; 2a: 23–26, 2b: 24–30, 2c: 26–30, 3a: 20–28, 3b: 24–28, 3c: 24, 3d: 22–24, 4a: 25–30, 4b: 24–26, 4c: 20–28, 4d: 20–30. Genital opening 140–174 long, 60–66 wide, with 6 pairs of genital setae, short, 16–22 long. Aggenital plate not observable. Anal opening 142–144 long, adanal plates 38–40 wide, each with two adanal clavate setae, 16–20 long. Pseudanal plate 80–82 long, 54–60 wide, with three pairs of setae, ps1 clavate 30–49 long, normally developed, ps2 and ps3 regressive, ps2 16–22 long; ps3 16–20 long, membranous integument with 8 pairs of setae.
Legs (Figs. 8–14). Measurements see Table 2.
Leg I. Trochanter (Fig. 9A) with one seta in series l’ and one regressive seta in d (Figs. 8A, 9A). Basifemur (Figs. 8A, 9B) with setae on v’ not pointed, distally blunt, but longer than other species of group, 54–64 and 80–96 + long, RBaf: 0.52–0.6, RBaf +: 0.75–0.9, 2 setae in series v”, both regressive (Fig. 9K), one pedicelated seta in series l’ and one regressive in series l” and d. Telofemur (Figs. 8A, 9B) with seta v’ subequal to v’ on basifemur, 54–66, 80–96 + long, RTef: 0.5–0.57, RTef +: 0.75–0.84, setae l’; l” and v” regressive. Genu (Figs. 8A, 9C) with 3 setae in series d; 2 setae in series l’, distal l’ elongated, 54–60, 70–78 + long; 3 pedicelated setae in series l”; series v’ with 3 pointed setae, with v1’ medially displaced; v’, 62–74, 82–100 + long, v2’, 46–62, 64–80 + long; series v” with 2 setae (Fig. 9K). Tibia (Figs. 8A, 9D–E, K) with 2 regressive setae in series d, 4 setae on both lateral series; series v’ with 4 pointed setae, 62–94, 74–106 + long, v2’ medially displaced; series v” with 4 pointed setae (Fig. 9K), v2” medially displaced, v” 52–70 long. Solenidion φ and famulus κ ” inserted dorsoantiaxially on distal portion of segment (Fig. 9D–E). Tarsus (Figs. 9G–J, 14A and C) with 3–4 setae in series l’, 4 setae in series l”, with l1” eupathidial, 3–4 setae in series v’ and 4 setae in series v”; trichobothria tb 24–34 long. Solenidion ω inserted dorsally (Figs. 9G, 14A) at level of l1”, simple in structure (Figs. 14A and C). Famulus inserted at antiaxial facies (Fig. 14C) at level of l1”. Four eupathidia: l1”, er’ and (st). Two claws ol’ and ol” lengths 8–10 and 30–42, respectively. Setal count (solenidia): 2, 6, 5, 13, 18(1), 20–22(1).
Leg II (Figs. 8B and 10). Trochanter (Fig. 10A) with one seta in each lateral series and one regressive seta in series d. Basifemur (Fig. 10B) d, l” and v1” regressive, v’ and v” pedunculated. Telofemur (Figs. 8B, 10B) with d, l’, l” and v” setae regressive and v’ pedunculated. Genu (Figs. 8A, 10C) with 3–4 regressive setae in d series, 3 pedunculated setae in l’ and 4 setae in l”, v1’ displaced externally (Fig. 8B), v” long and pointed (Fig. 8B), 72–84 long. Tibia (Fig.10D) with two regressive seta in d, 4 pedunculated setae in l’ and 3–4 on l”, 3 pointed setae in v’ and v”, solenidion inserted as on tibia I (Figs. 10E, F). Tarsus (Figs. 8B and 10G–I) with 4 setae in series l’ and l”, l1” always eupathidial, 4 setae in series v’ and 3 in v”, solenidion ω inserted dorsally at level of l’, famulus antiaxial, (st) pair absent, trichobothria bt 24–34 long. Two eupathidia: l1” and er’. Claws ol’ and ol” lengths 7–10 and 28–36, respectively. Setal count: 3, 5, 5, 13–14, 15(1), 18(1).
Leg III (Figs. 11A and 12). Setae on series v’ and v” spatulate, eupathidia absent. Trochanter (Fig. 12A) with anterior border rounded, with pedunculated setae: v’ and l” and 1 regressive in d. Basifemur (Fig. 12B) with l” and v’ elongated and d and v” regressive. Telofemur (Fig. 12B) with l’, l”, v” and d regressive and v’ elongated and pedunculated. Genu (Figs.11A, 12C) with 2–3, 1–2 regressive setae in series d and l’, respectively; 3 pedunculated setae in series v’ and 3 regressive in series v”. Tibia (Figs. 12D, F) with 3–4 regressive setae in series d, 3–4 setae in series l” and 4–5 in both ventral series, solenidion φ inserted on antiaxial face of segment. Tarsus (Fig. 12E) with 3–4, 2, 4–5, 3–4 setae in series l’, l”, v’ and v”, respectively, er” present and er’ absent; trichobothria bt 108–120 long, claws ol’ and ol” of length 12–16 and 26–36, respectively. Setal count: 3, 4, 5, 12–14, 15–18(1), 14–17.
Leg IV (Figs. 11B and 13) Setae as on leg III. Trochanter (Fig. 13A) with 3 setae: l” pedunculated and v’ and d regressive. Basifemur (Fig. 13E) with v’ regressive and l’ and v” pedunculated. Telofemur (Fig. 11B, 13E) with l’, v’ and d regressive, with setae of series v’ and l” elongated and pedunculated. Genu (Fig. 13G) with 2 and 1 regressive setae in series d and l’, respectively; 2 elongated and pedunculated setae each in series v’ and l”. Tibia (Figs. 13B–D) with 3 regressive setae in series d, 4 setae in v series and 3 in series l”, solenidion φ present (Fig. 13 B–C). Tarsus (Fig. 13F) with 2–4, 1–2, 3, 3 setae in series l’, l”, v’ and v”, respectively, er” present and er’ absent, claws ol’ and ol” lengths 12–16 and 42–52, respectively. Trichobothria 108–150 long. Setal count: 3, 3, 5, 9, 14(1), 11–14.
Male (n=1). Externally similar to female except in size.
Gnathosoma. Chelicera 132–136 long. Palp 4-segmented, with chaetotaxy as in female. Subcapitulum 192 wide at level of palp insertion, 146 long, setae m anterior to n, two pairs of adoral setae.
Idiosoma. 860 long, 592 wide at level of coxa IV.
Aspidosoma. Subtrapezoidal, 269 long, posterior margin 221 wide, anterior margin 70 wide, projecting horizontally over gnathosoma. Seta Po 100 long, trichobothrial seta bo 90 long. Aspidosomal setation regressive, Pa and Pm minute, Pp absent; anterior pair of lateral eyes 20–22 diameter, posterior pair 26–32.
Hysterosoma. Dorsal view. Dorsal plate D subtrapezoidal, 299 long, anterior margin 197 long, posterior margin 254 long, a1: 22–26, b1: 26, c1: 32; distance between setal insertions, a1-a1: 92, b1-b1: 50, c1-c1: 58, a1- b1:108–110, b1-c1: 114–118. Paired plates L 336–344 long, 70 wide; a2 regressive, 16 long; b2 and c2 absent, ia and im, 30–32 and 16 long, respectively. Median plates M fused, with d1, d2, 46–48 and 30 long, respectively, distance between setal insertions, d1-d1: 96, d2-d2: 292, d1-d2: 100–102. Posterior plates P, divided by ridges, setae e1, e2, e2’, 44–50, 34–36 and 30 long, respectively. Setae e2’ separated by ridge from e2, distance between setal insertions, e1-e1: 90, e1-e2: 68–76. Seta hs on posterior border of idiosoma, 50 long.
Ventral view, podosoma and opisthosoma. Coxal setation formula 4:3:4:3. Genital opening 162 long, with 6 pairs of genital setae, 24–30 long. Aggenital plate subtriangular, poorly sclerotized. Anal opening 154 long, with two pairs of clavate adanal setae, 16–18 long. Pseudanal plate 168–180 long, 60 wide, with three pairs of setae. Genital sclerites as other species of group (Fig. 39), with nine pairs of simple, unbranched setae, 14–16 long.
Legs. Measurement see Table 3. Ratios: RBaf: 0.54; RBaf +: 0.78; RTef: 0.54; RTef +: 0.76.
Larva (n=1)
Gnathosoma. Covered by aspidosoma in dorsal view. Chelicera 42–44 long; cheliceral seta ch present. Palp 4-segmented, trochanter glabrous, femorogenu with 1 clavate seta in dorsal series, 9–10 long; tibia with a spiniform d seta, 11 long, located on a projecting tubercle, 2 clavate setae l’ and l”, and two spiniform setae ld; 8–11 long, tarsus subconical, solenidion ω present on antiaxial face, 5 setae present: v, l’, and d in addition to 2 eupathidia, (u). Subcapitulum 90 wide at level of palp insertion, 60 long, setae m 12–13 long, anterior to n, 10 long, two pairs of adoral setae or 1-2.
Idiosoma 355 long, 269 wide at level of coxa III.
Aspidosoma. Subtrapezoidal, 136 long, posterior margin 132 wide, anterior margin 40 wide, projecting horizontally over gnathosoma. Seta Po 38 long, trichobothrial seta bo 42 long. Aspidosomal setation regressive, Pa and Pm minute, Pp absent. Lateral eye plates separated from other plates; anterior pair of lateral eyes 8 diameter, posterior pair 8–10.
Hysterosoma. Dorsal view (Fig. 16A). Dorsal plates poorly defined; only setae a1, b1, c1, a2, d1, e1 and hs present. Lengths of anterior hysterosomal setae, a1: 8–10, b1: 9–10, c1: 9; a2 regressive, 10 long, distance between setal insertions, a1-a1: 58, b1-b1: 38, c1-c1: 52, a1-b1: 45, b1-c1: 43–44. Lengths of posterior hysterosomal setae, d1: 22, e1: 28, distance between setal insertions d1-d1: 48, e1-e1: 38.
Ventral view, podosoma and opisthosoma (Fig. 16B). Coxal setation formula 2:0:1, setae 16–18 long, Claparede’s organs present on anterior margin of coxae II. Anal opening 70 long, hs 16 long, ventral lyrifissure ih observable at level of anal plate.
Legs (Fig. 17). Measurements see table 7. Femora entire on all legs, Rf: 0.65–0.73
Leg I. Tr, 0; Fe, 1d*, 1l’, 1l”, 1v’, 2v”; Ge, 2d*, 1l’, 2l”, 1v’, 1v”; Ti, 1d*, 2l’, 2l”, 2v’, 2v”, κ”, φ; Ta, 3l’, 2l”, 3v’, 3v”, tb, ε (dorsal), ω, st’ζ.
Leg II. Tr, 0; Fe, 1d*, 1l’, 1l”, 1v’, 2v”; Ge, 2d*, 1l’, 1l”, 1v’, 1v”; Ti, 1d*, 2l’, 2l”, 2v’, 2v”, φ; Ta, 3l’, 2l”, 3v’, 3v”, tb, ε (dorsal/antiaxial), ω.
Leg III. Tr, 0; Fe, 1d*, 1l’, 1l”, 1v’, 2v”; Ge, 1d*, 1l’, 1l”, 1v’, 1v”; Ti, 1d*, 1l’, 2l”, 2v’, 2v”, φ; Ta, 2l’, 1l”, 3v’, 2v”, tb.
Protonymph (n=4)
Gnathosoma. Covered by aspidosoma in dorsal view. Chelicera 64 long; cheliceral seta ch slender present. Palp 4-segmented, trochanter glabrous, femorogenu with 1 clavate seta in dorsal series, 20–22 long, tibia with prominent d calcar on projecting tubercle, 14 long, 2 clavate setae l’ and l”, and one calcar ld, 12–14 long; tarsus subconical, 18–20 long, 12–14 wide at base, solenidion ω present on antiaxial face, 5 setae: v, l’, d in addition to 2 eupathidia (u). Subcapitulum 130 wide at level of palp insertion, 86 long, setae m anterior to n, two pairs of adoral setae or 1–2.
Idiosoma. 434–528 long, 260–368 wide at level of coxa IV.
Aspidosoma. 160–176 long, posterior margin 140 wide, anterior margin 42–50 wide, projecting horizontally over gnathosoma. Anterior margin circular. Seta Po 54–60 long, trichobothrial seta bo 56–80 long. Aspidosomal setation regressive, Pa and Pm minute, Pp absent. Lateral eye plates separated from other plates; anterior pair of lateral eyes 10–12 diameter, posterior pair 12–18.
Hysterosoma. Dorsal view. Unpaired dorsal plate D subtrapezoidal, 150–166 long, anterior margin 110–140 long, posterior margin 150–160 long, setae a1, b1, c1, present, lengths, a1: 10–14, b1: 14–15, c1: 20; distance between setal insertions, a1-a1: 56–70, b1-b1: 47–50, c1-c1: 47–52, a1-b1: 56–66, b1-c1: 59–70. Paired plates L 180–200 long, 38–50 wide; a2 regressive, 8–10 long; b2 and c2 absent; ia and im 18–20 and 6–10 long, respectively. Median plate M fused, d1 30–32 long, d2 absent; distance between setal insertions d1-d1: 54–72. Posterior plates P with setae e1 28 –32 long, e2 absent, distance between setal insertions e1-e1: 50–64. Seta hs on posterior border of idiosoma, 20 long.
Ventral view, podosoma and opisthosoma. Coxal setation formula 2:1:2:1, coxal setae clavate. Genital opening 22–28 long, with 1 pair of setae, 8–10 long. Anal opening 80–86 long, with two pairs of clavate setae, 20 long. Pseudanal plate 70–80 long, 30 wide, with three pairs of setae, ps1, ps2 and ps3, 14–18, 10–12, 8–10 long, respectively.
Legs. Measurement see table 6. Femora entire in leg IV, RTef: 0.68–0.73, RTef +: 0.84–0.95.
Leg I. Tr, 1d (p=0.5), 1l’; PrFe,1d (p=0.5) v”; TeFe, 1d*, 1l’, 1l”, 1v’, 1v”; Ge, 2d*, 2l’, 1l”, 1v’, 1v”; Ti, 1d*, 2l’, 2l”, 2v’, 2v”, κ”, φ; Ta, 3l’, 2l”, 3v’, 3v”, tb, ε (antiaxial), ω, (st)ζ.
Leg II. Tr, 1d (p=0.5, n=4), 1l’, 1l”; PrFe, v’, TeFe, 1d*, 1l’, 1l”, 1v’, 1v”; Ge, 2d*, 1l’, 1l”, 1v’, 1v”; Ti, 1d*, 2l’, 2l”, 2v’, 2v”, φ; Ta, 3l’, 2l”, 3v’, 3v”, tb, ε (antiaxial), ω.
Leg III. Tr, d*(p=0.5, n=4), v’; PrFe, v’; TeFe, 1d*, 1l’*, 1l”*, 1v’, 1v”; Ge, 1d*, 1-2l’*, 1l”, 1v’, 1v”; Ti, 1d*, 1l’, 2l”, 2v’, 2v”, φ; Ta, 2l’, 1l”, 3v’, 2v”, tb.
Leg IV. Tr, 0-1v’; Fe, 1d*, 1v’, 0-1v”; Ge, 1d*, 1l’*,1l”*, 1v’, 1v”; Ti, 1d*, 1l’, 2l”, 2v’, 2v”, φ; Ta, 1l’, 1l”, 2v’, 2v”, tb.
Deutonymph (n=2)
Gnathosoma. Covered by aspidosoma in dorsal view. Chelicera 44 wide at base, 90 long; cheliceral seta ch present. Palp 4-segmented, trochanter glabrous, femorogenu with 2 clavate setae in dorsal series, d and d1, 24–30 and 14–20 long, respectively; tibia with 2 calcars d and ld, 17–20 and 18–20 long, respectively, and 2 clavate setae l’ and l”, 12–16 long; tarsus subconical, ω solenidion present on antiaxial face, 5 setae v, l’ and d in addition to 2 eupathidia (u). Subcapitulum 122–164 wide at level of palp insertion, 106–118 long, setae m 24–26 long, anterior to n, 20 long, two pairs of adoral setae or 1–2.
Idiosoma. 569–711 long, 410–458 wide at the level of coxa IV.
Aspidosoma. 192–220 long, posterior margin 164–170 wide, anterior margin 44–50 wide, projecting horizontally over gnathosoma. Seta Po 62–72 long, trichobothrial seta bo 72–80 long. Aspidosomal setation regressive, Pa and Pm minute, Pp absent. Lateral eye plates separated from other plates; anterior pair of lateral eyes 10–18 diameter, posterior pair 16–21.
Hysterosoma. Dorsal view. Unpaired dorsal plate D subtrapezoidal, 180–221 long, anterior margin 150–184 long, posterior margin 180 long, lengths, a1: 18–20, b1: 22–24, c1: 25–26; distance between setal insertions, a1-a1: 81–88, b1-b1: 42–56, c1-c1: 50–66, a1-b1: 72–84, b1-c1: 69–94. Paired plates L 298 long, 80 wide; a2 regressive 11–12 long; b2 and c2 absent; ia and im 21–30 and 12 long, respectively. Median plate M fused, d1: 30–32 long, d2 absent in the second exemplar; distance between setal insertions d1-d1: 72–84, d1-d2: 72–86, d2-d2: 237. Posterior plates P with setae e1 and e2 30 –44 and 16–30 long, respectively; distance between setal insertions e1-e1: 56–70, e1-e2: 44–56. Seta hs on posterior border of idiosoma, 26–30 long.
Ventral view, podosoma and opisthosoma. Coxal setation formula 4:1–2:5:2. Genital opening 34 long, with 1 pair of genital setae, 14–16 long. Anal opening 94–110 long, adanal plate 30 wide, with two pairs of adanal clavate setae, 10–14 long.
Legs. Measurement see table 5. Ratios: RBaf: 0.43–0.55; RBaf +: 0.6–0.7, RTef: 0.48–0.61, RTef +: 0.59–0.77
Leg I. Tr, 1d, 1l’; PrFe, 1d, l’, l”, v’ v”; TeFe, 1d*, 1l’, 1l”, 1v’, 1v”; Ge, 2d*, 1l’, 2l”, 2v’, 2v”; Ti, 1d*, 2l’, 1-2l”, 3v’, 3v”, κ”, φ; Ta, 2-3l’, 2l”, 3v’, 3v”, tb, er’ζ, er”, ε, ω, (st)ζ,
Leg II. Tr, 1d*, 1l’, 1l”; PrFe, 0-1d*, l”, 1v’,1v”; TeFe, 1d*, 1l’*, 1l”*, 1v’, 1v”; Ge, 2d*, 1l’, 2l”, 2v’, 1v”; Ti, 1d*, 2l’, 2l”, 2v’, 2v”, φ; Ta, 2l’, 2l”, 3v’, 3v”, er’ζ, er” tb, ε, ω.
Leg III. Tr,0-1d*, l”, v’; PrFe, 0-1l”, 1v’, 1v”; TeFe, 1d*, 1l’*, 1l”*, 1v’, 1v”; Ge, 2d*, 2l”, 2v’, 2v”; Ti, 2d*, 2l”, 3v’, 3v”, φ; Ta, 2l’, 1l”, 3v’, 2-3v”, er”, tb.
Leg IV. Tr, 0-1d*, 0-1v’; PrFe, 1v’; TeFe, 1d*, 0-1l’, 1l”, 1v’, 1v”; Ge, 1-2d*, 1l’*, 1-2l”, 2v’, 1v”; Ti, 1d*, 1l’*, 2l”, 2v’, 2v”, φ; Ta, 1l’, 1l”, 3v’, 2v”, er”, tb.
Tritonymph (n=6)
Gnathosoma. Covered by aspidosoma in dorsal view. Chelicera 106–110 long. Palp 4-segmented, trochanter glabrous, femorogenu with 2 clavate setae in dorsal series, d and d1, 36–40 and 26–30 long, respectively; tibia with 2 calcars d and ld, 22–26 and 26 long, respectively, and 2 clavate setae l’ and l”, 16–26 long; tarsus subconical, 34–40 long, 16–22 width at base, ω present on antiaxial face, 5 setae v, l’ and d in addition to 2 eupathidia (u). Subcapitulum 192–204 wide at level of palp insertion, 92–130 long, setae m 26–28 long, anterior to n, 22–24 long, two pairs of adoral setae or 1-2, 9–11 long.
Idiosoma. 700–943 long, 553–711 wide at level of coxa IV.
Aspidosoma. Subtrapezoidal, 253–276 long, posterior margin 215–241 wide, anterior margin 78–82 wide, projecting horizontally over gnathosoma. Seta Po 82–90 long, trichobothrial seta bo, 76–90 long. Aspidosomal setation regressive, Pa and Pm minute, Pp absent. Lateral eye plates separated from other plates; anterior pair of lateral eyes 24 diameter, posterior pair 26–30.
Hysterosoma. Dorsal view. Unpaired dorsal plate D subtrapezoidal, 221–291 long, anterior margin 176–205 long, posterior margin 246 long, a1: 22–24, b1: 26–30, c1: 26–32; distance between setal insertions, a1-a1: 96–100, b1-b1: 70, c1-c1: 66–76, a1-b1: 108–112, b1-c1: 106–114. Paired plates L 344–352 long, 74–80 wide; a2 regressive, 12–13 long; b2 present with p=1/12, 22 long, c2 present with p=1/2, 18–22 long; ia and im 26–32 and 12–18 long, respectively. Median plates M fused, with d1, d2 38–42 and 30 long, respectively, distance between setal insertions, d1-d1: 114, d2-d2: 316–324, d1-d2: 100–110. Posterior plates P divided by ridges, setae e1, e2, e2’, 42, 36–38 and 26–32 long, respectively. Setae e2’ separated by ridge from e2, distance between setal insertions, e1-e1: 96, e1-e2: 64–80. Seta hs on posterior border of idiosoma, 38 long.
Ventral view, podosoma and opisthosoma. Coxal setation formula 3–4:2–3:3–4:2–3. Genital opening 70–94 long, with 3 pairs of genital setae, 12–20 long. Anal opening 146–164 long, adanal plate 30–36 wide, with two pairs of adanal clavate setae, 12–15 long. Pseudanal plate 200 long, 135 wide, with three pairs of setae.
Legs. Measurements see table 4. Ratios: RBaf: 0.57–0.68; RBaf +: 0.75–0.85; RTef: 0.55–0.61; RTef +: 0.71– 0.77.
Leg I. Tr, 1d*, 1l’; PrFe, 1d*, l’, l”, v’, 2v”; TeFe, 1d*, 1l’, 1l”, 1v’, 1v”; Ge, 2-3d*, 1-2l’, 2l”, 3v’, 2v”; Ti, 2d*, 3l’, 3l”, 3v’, 3v”, κ”, φ; Ta, 3l’, 3l” (1”ζ), 2–3v’, 3–4v”, tb, ε, ω, (st)ζ, er’ζ, er”.
Leg II. Tr, 1d*, 1l’, 1l”; PrFe, 1d*, l’*, 1v’,2v”; TeFe, 1d*, 1l’*, 1l”*, 1v’, 1v”; Ge, 3d*, 3-4l’, 2l”, 1-2v’, 1v”; Ti, 1-2d*, 3l’, 3l”, 3v’, 2-3v”, φ; Ta, 3l’, 3l” (l’ ζ,), 3v’, 3v”, tb, ε, ω,, er’ζ, er”.
Leg III. Tr, 1d*, 1l”, 1v’; PrFe, 1d*, 1l”, 1v’, 1–2v”; TeFe, 1d*, 1l’*, 1l”*, 1v’, 1v”; Ge, 2d*,0–2l’*, 2l”, 2v’, 2v”; Ti, 3d*, 3l”, 4v’, 4v”, φ; Ta, 3l’, 2l”, 3v’, 3v”, er”, tb.
Leg IV. Tr, 1d*, l”, 1v’; PrFe, 0-1d, 0-1l”, 1v’, 1v”; TeFe, 1d*, 1l’*, 1l”, 1v’, 1v”; Ge, 2d*, 0-1l’*, 2l”, 2v’, 2v”; Ti, 2–3d*, 2-3l”, 3v’, 3v”, φ; Ta, 2l’, 1l”, 3v’, 3v”, er”, tb.
description: Published as part of Porta, Andrés O., Pizarro-Araya, Jaime & Ramírez, Martín J., 2021, Revision and phylogeny of the genus Andocaeculus (Acari: Caeculidae) I: the A. weyrauchi species group, pp. 1-78 in Zootaxa 4945 (1) on pages 7-28, DOI: 10.11646/zootaxa.4945.1.1, http://zenodo.org/record/4614242