Tyroborus miripes Athias-Henriot 1961, comb. nov.
Creators: name: Fan, Qing-Hai
name: Zhang, Zhi-Qiang
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Astigmata
Acaridae
Tyroborus
Tyroborus miripes

description: Tyroborus miripes (Athias­Henriot, 1961) comb. nov.
(Figs. 6–15, Plates 2–4)
Tyrophagus miripes Athias­Henriot, 1961: 1.
Material examined
Paratypes: 2/ 2 males (remounted), “ ALGERIE: Maison­Carrée, banlieue d’Alger, Lato, 15.I.1956, C. Athias, cendre de S. gregaria récoltés prés d’Ouayla” (MHNG Athias E473).
Other material: 1/ 1 female, same data as paratype; 2/ 2 females (remounted), as paratype except code, MHNG Athias E478.
Diagnosis
MALE. Supracoxal seta scx broadly widened at bases of pectinations, densely bearing 32 (32–34) pectinations; d1 about 7.5 (6.7–7.5)× length of c1 and 7.5 (7.5–8.3)× length of d2; d2 0.7–1.0× length of c1; aedeagus tapering from base to tip, with one major curve, apical end almost straight, internal diameter unform throughout its apical part, lateral arms supporting aedeagus turning inward; solenidia I 1 and II stout, cylindrical, not widened at apex; ratio (a+b): c = 4.4 (3.8–4.4).
FEMALE. Supracoxal seta scx bearing 38 (38–46) pectinations; spermathecal duct narrowing rapidly from copulatory opening for a distance about 0.3 (0.3–0.5)× distance between sclerites of oviducts, forming a neck and then gradually widening to base of spermathecal sac over a distance about 2.3 (2.3–2.5)× distance between sclerites of oviducts, base of spermathecal sac nearly flat; solenidia I 1 and II stout, cylindrical, not obviouly widened at apex.
Description
MALE (Fig. 6–10, Plate 2)
Idiosoma. 577 (577–623) long, 312 (312–317) wide. Chelicera 102 (101–102) long, cheliceral seta cha apically branched, 7 long, subcapitular setae m 37 (34–37), palpal supracoxal seta elcp 18 (18–21), apically trifurcate, dorsal palptibial seta 25, lateral palptibial seta 18, dorsal palptarsal seta 16 (16–18), palptarsal solenidion 4.
Dorsum. Prodorsal shield nearly pentagonal in shape and obviously punctate, 101 (101–107) long, 110 (105–110) wide between ve­ve. Eyespots not observed. Grandjean’s organ finger­like and barbed, 13 (13–14) long, its basal lobe with 3–4 obvious spiniform teeth; supracoxal seta scx broadly widened at bases of pectinations, 52 (52–53) long, densely bearing 32 (32–34) pectinations. All dorsal idiosomal setae sparsely pectinated. Ratios: vi: ve = 1.7, sci: sce = 1.2 (1.2–1.3), sci­sci: sci­sce = 1.2 (1.0–1.2). Lengths of setae: vi 100, ve 58 (51–58), sci 176 (176–178), sce 151 (137–151); distances: vi­vi 10, vive 56, sci­sci 47 (41–47), sci­sce 40 (40–43). Hysterosomal setae d1 about 7.5 (6.7–7.5)× length of c1 and 7.5 (7.5–8.3)× length of d2; d2 0.7–1.0× length of c1; lengths of setae: c1 25 (25–30), c2 191 (172–191), c p 151 (151–156), c3 39 (37–39), d1 positioned close to c1, 188 (182–188) long, d2 25 (22–25), e1 201, e2 205 (192–205), f2 258 (249–258), h1?, h2?, h3 165; distances: c1­c1 122 (122–148), c1­d1 38 (33–38), d1­d1 70 (70–95), d2­gla 70 (70–87), d1­e1 130 (130–165).
Venter. Coxal plates I not reaching posterior extremity of prosternal apodeme; coxal plates II very narrow, no more than 1/2 length of lateral sclerite. Setae 1a 25 (25–36); 3a 22 (22–25); 3b 35 (31–35); g 27, 4a 25. Aedeagus tapering from base to tip, 35 long, with one major curve, apical end very small, almost straight, internal diameter uniform throughout its apical part; lateral arms supporting aedeagus turning inward. Anal slit 87 long, distance between anterior rim of anal slit and posterior margin of aedeagus 58. Anal suckers about 40 (38–40) in diameter; anal discs 5 in diameter. Pseudanal setae ps1 about 141 (134–141), ps2 45 (45–52), ps3 21 (19–21); ps1­ps1 141 (141–134), ps2­ps2 73.
Leg I. 208 (198–208) long; femur I 65 (63–65), vF simple, 45 (44–45) long; genu I 43 (40–43), ' 27 (26–27), " 24 (23–24), I ': " = 1.1, cG 39 (38–39), mG 42; tibia I 33 (32–33), 93 (89–93), gT 24 (22–24), hT 29 (26–29); length of tarsus I (excluding claw) about 1.9 (1.9–2.0)× width, 54 (50–54) long, 28 (25–28) wide, 1 stout, cylindrical, not widened at apex, 14 (14–15) long, 3, 2 6, 3 19 (19–25), distance between aa and 1 about 8, aa 17 long, ba 23 (23–24), wa 34 (34–36), ra 28 (28–30), la 17 (17–18), d 39 (39–40), e moderate, 9, f 21 (21–22), s stout, 8, u and v stout, 8, p and q thin, 8, claw 18 (18–20).
Leg II. 199 (176–199) long; femur II 59 (54–59), vF 41; genu II 43 (42–43), 15 (15–17), cG 39 (36–39), mG 40 (37–40); tibia II 31 (30–31), 80 (79–80), gT 22 (20–22), hT 28 (27–28); length of tarsus II (excluding claw) about 2.0 (2.0–2.1)× width, 46 (46–47) long, 23 (22–23) wide, stout, cylindrical, not widened at apex, 15 (15–17) long, ba 21 (21–22), wa 32, ra 25 (25–27), la 18 (16–18), d 34, e 7, f 16, s stout, 8, u and v stout, 8, p and q thin, 7, claw 18 (18–19).
PLATE 2. Tyroborus miripes (Athias­Henriot) (male). A, coxa II; B, aedeagus; C, supracoxal seta; D, tarsus I; E, tarsus II; F, tarsus IV.
Leg III. 198 (178–198) long; femur III 49 (45–49); genu III 40 (38–40), 15 (15–18), nG 52 (51–52); tibia III 29 (29–30), 79 (79–82), kT 29 (29–31); length of tarsus III (excluding claw) about 2.4 (2.4–2.5)× width, tarsus III 57 (54–57) long, 24 (22–24) wide, w 30 (30–31), r 28, d 36 (31–36), e 7, f 25 (20–25), s stout, 8 (7–8), u and v stout, 8, p and q 7, claw 18 (17–18).
Leg IV. 200 (199–200) long; femur 53 (48–53), wF 35 (32–35); genu IV 39 (37–39); tibia IV 36 (30–36), 69 (65–69), kT 25; length of tarsus IV (excluding claw) about 2.6 (2.6–2.7)× width, tarsus IV 57 (53–57) long, 22 (20–22) wide, w and r situated at level between suckers, w 27 (27–30) long, r 25 (23–25) long, distance between basal rim of tarsus IV and proximal sucker d 20, between d and e 28 (26–28), between e and f 11 (11–12), ratio (a+b): c = 4.4 (3.8–4.4), f 27 (27–31), s stout, 7, u and v stout, 7, p and q thin, 6, claw 18.
FEMALE (Fig. 11–15, Plate 3)
Idiosoma. 775 (687–775) long, 512 (366–512) wide. Chelicera 125 (112–125) long, cheliceral seta cha apically branched, 8 (7–8) long, setae m 51 (50–52), palpal supracoxal seta elcp 31 (30–31) long, apically bifurcate, dorsal palptibial seta 32 (30–32), lateral palptibial seta 22 (21–24), dorsal palptarsal seta 19 (18–19), palptarsal solenidion 5 (4–5).
Dorsum. Prodorsal shield nearly pentagonal in shape and obviously punctate, 125 long, 151 (135–151) wide between ve ­ve. Eyespots not observed. Grandjean’s organ finger­shaped and barbed, 18 (16–18) long, basally with 4–6 branches; supracoxal seta scx broadly widened at bases of pectinations, 57 (57–62) long, densely barbed and with 38–46 pectinations. All dorsal idiosomal setae sparsely pectinated. Ratios: vi: ve = 1.6, sci: sce = 1.1 (1.1–1.4), sci­sci: sci­sce = 1.2 (1.2–1.4). Lengths of setae: vi 107 (101–107), ve 67 (65–67), sci 178 (178–215), sce 169 (150–169); distances: vi­vi 13 (12–17), vi­ve 75 (67–75), sci­sci 68 (59–68), sci­sce 55 (43–55). Hysterosomal setae d1 about 5.8 (5.6–5.8)× length of c1 and 5.3 (5.3–6.0)× length of d2; d2 about 1.1 (0.8–1.1)× length of c1; lengths of setae: c1 32 (32–37), c2 213 (179–233), c p 176 (139–176), c3 38 (38–45), d1 positioned close to c1, 186 (186–209) long, d2 35 (31–35), e1 266 (263–266), e2 218 (218–232), f2 282 (281–301), h1 306 (269–316), h2 301 (289–301), h3 236 (216–236); distances: c1­c1 207, c1­d1 63 (45–67), d1­d1 65 (63–65), d2­gla 95 (93–142), d1­e1 183 (108–201), e1­e1 226 (120–226).
Venter. Coxal plates I not reaching posterior extremity of prosternal apodeme; coxal plates II very narrow, no more than 1/2 length of lateral sclerite. Setae 1a 43 (42–45); 3a 33 (26–34); 3b 45 (42–45); g 33 (26–28), 4a 36 (36–42). Adanal setae ad1 30 (30–45), ad2 25 (25–38), ad3 28 (28–32); pseudanal setae ps1 174 (174–223), ps2 142 (129–142), ps1 50 (50–57); spermathecal duct narrowing rapidly from copulatory opening for a distance about 0.3 (0.3–0.5)× distance between sclerites of oviducts, forming a neck and then gradually widening to base of spermathecal sac over a distance about 2.3 (2.3–2.5)× distance between sclerites of oviducts, base of spermathecal sac nearly flat; spermathecal duct 54 (43–54) long, distance between sclerites of oviducts 19 (17–19).
Leg I. 255 (221–255) long; femur I 74 (62–74), vF simple, 55 (54–65) long; genu I 52 (37–52), ' 33 (31–33), " 32 (28–32), I ': " = 1.0 (1.0–1.1), cG 45 (42–47), mG 49 (43–49); tibia I 33 (33–36), 101 (89–101), gT 30 (27–30), hT 35 (31–37); length of tarsus I (excluding claw) about 2.2 (2.1–2.2)× width, 62 (58–62) long, 28 (27–28) wide, 1 stout, cylindrical, not widened at apex, 16 (16–17) long, 4 (4–5), 2 7 (6–7), 3 28 (26–28), distance between aa and 1 about 8 (8–13), aa 23 (21–23) long, ba 26, wa 37 (35–37), ra 27 (25–27), la 23, d 43 (34–43), e 11, f 16 (16–17), s 10 (9–10), u and v 10 (9–10), p and q thin, 9 long, claw 25 (24–25).
Leg II. 188 (188–217) long; femur II 65 (62–77), vF 72 (57–72); genu II 45 (39–45), 21 (20–22), cG 45 (42–45), mG 45 (42–45); tibia II 40 (38–40), 111 (92–111), gT 25 (22–26), hT 33 (30–33); length of tarsus II (excluding claw) about 1.7 (1.7–2.0)× width, 56 (51–56) long, 28 (28–30) wide, stout, cylindrical, 18 (18–19) long, ba 27 (24–27), wa 39 (33–37), ra 34 (32–37), la 21 (21–22), d 32 (31–32), e 11, f 20 (19–20), s 10, u and v 10, p and q 11 (9–10), claw 24.
Leg III. 182 (182–208) long; femur III 50 (50–53); genu III 42 (32–42), 17 (17–19), nG 60 (53–60); tibia III 37 (32–37), 90 (90–99), kT 35 (32–35); length of tarsus III (excluding claw) about 2.4 (2.4–2.5)× width, tarsus III 60 (54–60) long, 25 (22–25) wide, w 32 (32–35), r 30 (30–32), d 36 (36–37), e 10 (9–10), f 21 (18–21), s 10 (9–10), u and v 10 (9–10), p and q 7, claw 20 (18–20).
Leg IV. 257 (219–257) long; femur 57 (51–62), wF 47 (37–47); genu IV 50 (43–50); tibia IV 45 (35–45), 65 (65–78), kT 30 (30–32); length of tarsus IV (excluding claw) about 3.0 (3.0–3.4)× width, tarsus IV 72 long, 24 (21–24) wide, w 41 (37–41) long, r 34 (32–34) long, d 38 (33–38), e stout, 9 long, f 21 (19–21), s 10 (9–10), u and v 10 (9–10), p and q 7, claw 20 (19–20).
EGG (Plate 4)
Oval in shape, covered by evenly scattered tubercles.
PLATE 3. Tyroborus miripes (Athias­Henriot) (female). A, coxa II; B, copulatory opening and spermatheca; C, supracoxal seta; D, solenidia on tarsus I; E, solenidion on tarsus II.
Remarks
This species was originally placed in the genus Tyrophagus (Athias­Henriot 1961) when the position of Tyroborus was questionable at that time. According to the present definition (see generic diagnosis above) in this paper we consider that it should be moved to Tyroborus.
Tyroborus miripes (Athias­Henriot) can be readily distinguished from T. lini Oudemans by having prominent proral setae on tarsi and solenidion ' on genu I being not shorter than ". In the illustration of the supracoxal seta (Fig. 2) Athias­Henriot (1961) gave more than one hundred pectinations. According to our observation on the paratypes and other materials the supracoxal seta has 32 (32–34) pectionations in male and 38 (38–46) pectionations in female.
PLATE 4. Tyroborus miripes (Athias­Henriot). Egg.
description: Published as part of Fan, Qing-Hai & Zhang, Zhi-Qiang, 2006, Revision of Tyroborus Oudemans, 1924 (Acari: Astigmata: Acaridae), pp. 1-43 in Zootaxa 1152 on pages 12-27, DOI: 10.5281/zenodo.172161