taxonID	type	description	language	source
063BDD37FFA5FFB270ED7C9C54BFC530.taxon	materials_examined	Type species: Tetranychus lintearius Dufour 1832, by original designation.	en	Samanta, Subhra, Bala, Suvash Chandra, Karmakar, Krishna, Ueckermann, Edward A. (2024): Two new records with complementary description of four species of Tetranychus Dufour, 1832 (Acari: Tetranychidae) from West Bengal, India. Records of the Zoological Survey of India 124 (4): 329-340, DOI: 10.26515/rzsi/v124/i4/2024/172827, URL: https://doi.org/10.26515/rzsi/v124/i4/2024/172827
063BDD37FFA5FFB070ED7D105737C29D.taxon	description	Female: Striation pattern between setae e 1 – f 1 forming a diamond-shaped pattern. Striation in the pregenital region longitudinal, oblique and broken medially. Peritreme hook length 30 - 34. Tarsus I with 4 setae positioned behind proximal duplex setae. Empodia of each leg split into 6 proximoventral hairs with prominent dorsomedian spurs. Spinneret length and width 5 – 7 x 4 – 6. Material examined: 18 females (Acarol. lab / BCKV / 4356 - 73 / 56) 12 males (Acarol. lab / BCKV / 4374 - 85 / 56) collected from Arachis hypogaea L. (Fabaceae) Block Seed Farm, Bidhan Chandra Krishi Viswavidyalaya, Jaguli (22 ° 55 ’ 36 ’’ N, 88 ° 33 ’ 76 ’’ E) Nadia, West Bengal, 9 th March, coll. Subhra Samanta. Female: (Figures 1 - 9, 53, 54) Dorsum (Figure 1): Length of the idiosoma 550 - 580, width at the level of c setae 398 - 430, propodosoma with longitudinal striation forms a semicircular lobe. Histerosomal striation transverse medially, between e 1 - e 1 and f 1 - f 1 striation pattern longitudinal, striation between setae e 1 - f 1 forming a diamond-shaped pattern. Length of dorsal setae: v 2 84 - 92, sc 1 139 - 157, sc 2 91 - 115; c 1 138 - 150, c 2 126 - 138, c 3 102 - 115, d 1 118 - 130, d 2 121 - 135, e 1 114 - 127, e 2 115 - 125, f 1 103 - 113, f 2 90 - 101, h 2 56 - 64. Distance between dorsal setae: v 2 - v 2 76 - 84, v 2 - sc 1 21 - 27, sc 1 – sc 2 92 - 100, sc 1 - sc 1 102 - 115, sc 2 - sc 2 267 - 285, c 1 - c 1 80 - 88, c 1 - c 2 65 - 71, c 2 - c 3 98 - 110, c 2 - c 2 214 - 226, c 3 - c 3 378 - 390, d 1 - d 1 116 - 132, d 1 - d 2 68 - 76, d 2 - d 2 162 - 180, c 1 - d 1 72 - 80, c 3 - d 2 98 - 109, e 1 - e 1 76 - 84, e 1 - e 2 80 - 88, e 2 - d 2 91 - 101, e 2 - e 2 227 - 245, f 1 - f 1 67 - 77, f 2 - f 2 162 - 175, f 1 - f 2 76 - 84, f 1 - d 1 174 - 186, h 2 - h 2 38 - 42. Venter (Figures 2, 54): Ventral setae slender, smooth. Lengths: 1 a 73 - 79, 1 b 59 - 70, 1 c 76 - 84, 2 b 79 - 89, 2 c 92 - 100, 3 a 71 - 81, 3 b 74 - 82, 4 a 76 - 84, 4 b 79 - 90, ag 59 - 70, g 1 32 - 40, g 2 37 - 43, ps 1 15 - 17, ps 2 14 - 16, h 3 47 - 57. The striation pattern between the intercoxal region is simple and transverse; striation in the pregenital region longitudinal, oblique, and broken medially. Distance between intercoxal setae: 1 a - 1 a 29 - 35, 3 a - 3 a 79 - 89, 4 a - 4 a 84 - 93, ag - ag 76 - 84, g 1 - g 1 92 - 100, g 2 - g 2 102 - 114, g 1 - g 2 29 - 35, ps 1 - ps 1 25 - 31, ps 2 - ps 2 33 - 39, h 3 - h 3 99 - 110. Gnathosoma (Figures 3 - 4, 53): Stylophore rounded, with only longitudinal striation. Peritreme distally hooked, hook length 28 - 32; palpfemur, palpgenu with one setae only, palpfemur d PFe 53 - 61, palpgenu l’ ’ PGe 32 - 38, palptibia with three setae and d PTi 23 - 29, l’ PTi 8 - 10, l ” PTi 11 - 13 and a claw; palptarsus (length 15 - 19, wide 14 - 18) with three setae a 7 - 9, b 8 - 10, c 8 - 9; one spinneret suζ length 5 - 7 width 4 - 6; one solenidion ω 5 - 6; two eupathidia ul’ζ 7 - 9, ul ” ζ 7 - 8. Spinneret length is slightly shorter than two eupathidia. The ratio of length and width of the palptarsus is equal. Leg (Figures 5 - 9): leg I length 333 - 351, leg II length 268 - 285, leg III length 270 - 280, leg IV length 321 - 339 (from trochanter to tarsus). Setal pattern on leg I – IV coxa 2 - 2 - 1 - 1, trochanter 1 - 1 - 1 - 1, femur 10 - 6 - 4 - 4, genu 5 - 5 - 4 - 4, tibia 9 (1) - 7 - 6 - 7, tarsus 13 (1) + 2 duplex setae- 13 (1) + 1 duplex setae- 9 (1) - 10 (1). Tarsi I with 10 tactile setae, 3 eupathidia, 1 solenidion and 2 sets of proximal duplex setae, 3 tactile setae and 1 solenidion proximal to the proximal duplex setae; tarsi II with 9 tactile setae, 3 eupathidia, 1 solenidion, 1 set of duplex setae, 1 tactile seta adjacent to duplex setae; tarsi III and IV each having 9 tactile setae and 1 solenidion. Empodia of leg I – IV each with a spur and split into 3 pairs of hairlike structures known as proximoventral hairs. Male: (Figures 10 - 13, 55). Aedeagus (Figures 13, 55): In the aedeagus knob Anterior projection is absent, posterior projection with a pointed tip, the dorsal margin of the knob is rounded, the main shaft maximum length is 8 - 10, maximum width is 6 - 8, maximum neck length 1 - 2, neck width 2 - 3, head length 4 - 6, the axis of the head forming angle with the shaft 60 o. Leg (Figures 10, 11): Tarsus I with 10 tactile setae, 3 solenidia, 3 eupathidia, and 2 sets of duplex setae. Tarsus I bears 4 tactile setae and 2 solenidia proximal to the proximal duplex setae. 2 solenidia are in line with proximal duplex setae. Tibia I with 4 solenidia, and 9 tactile setae. Tarsus II with 10 tactile setae, 1 solenidion, 3 eupathidia, and 1 set of duplex setae. Tibia II with 7 tactile setae. Empodia split with a prominent spur. Gnathosoma (Figure 12): Palpal setation from femur to tibia d PFe 8 - 10, l’ ’ PGe 20 - 24, d PTi 15 - 19, l’ PTi 9 - 11, l ” PTi 11 - 13. Palpfemur seta d PFe modified into a leaflike structure, palptarsus length 10 - 12, wide 8 - 10; palptarsus with 3 setae a 7 - 9, b 6 - 8, c 7 - 9, one spinneret suζ (length 5 - 7, wide 2 - 3), one solenidion ω 5 - 7 and two eupathidia ul’ζ 5 - 6, ul ” ζ 6 - 7. Spinneret length and width ratio 2: 1. Remarks: This species was described by Banks, 1900 from the United States, on Gossypium sp. We have identified the same species Tetranychus gloveri Banks, 1900 from Arachis hypogaea L. (Fabaceae) by comparing the structure of the aedeagus, tarsus of leg I and II mainly the number of setae proximal to the proximal duplex setae, and length of the hook of the peritreme, pregenital striation pattern of female and shape of dorsal palp femoral setae of male. Seeman and Beard, 2011 stated that 1 – 3 tactile setae overlap with the socket of proximal duplex setae and peritreme hook length 21 – 27 but here 4 setae proximal to the proximal duplex setae and peritreme hook length 28 – 32 of females. This species is reported for the first time infesting groundnuts from India.	en	Samanta, Subhra, Bala, Suvash Chandra, Karmakar, Krishna, Ueckermann, Edward A. (2024): Two new records with complementary description of four species of Tetranychus Dufour, 1832 (Acari: Tetranychidae) from West Bengal, India. Records of the Zoological Survey of India 124 (4): 329-340, DOI: 10.26515/rzsi/v124/i4/2024/172827, URL: https://doi.org/10.26515/rzsi/v124/i4/2024/172827
063BDD37FFA7FFB770ED7B6E51B6C631.taxon	diagnosis	Diagnosis: Male: Empodia of leg I – IV each with free long, proximoventral hair, appearing tridigitate with prominent mediodorsal spur. Tarsus I bears 2 tactile setae and 3 solenidia proximal to the proximal duplex setae. Palpfemur seta d PFe modified into a clavate structure. Aedeagal knob with minute posterior projection, anterior projection with a pointed tip which forms an angle of 60 o with the shaft, the dorsal margin of knob convex. Female: Striation pattern between dorsocentral setae e 1 – f 1 forming a diamond-shaped pattern. Striation in the pregenital region is longitudinal, oblique and continuous. Peritreme hook length 22 – 25. Tarsus I with 4 setae positioned behind proximal duplex setae. Empodia of each leg split into 6 proximoventral hairs with prominent dorsomedian spurs. Spinneret length and width 5 – 6 x 4 – 5. Material examined: 16 females (Acarol. lab / BCKV / 4455 - 70 / 55) and 13 males (Acarol. lab / BCKV / 4471 - 83 / 71) collected from Arachis hypogaea L. (Fabaceae) Berhampore, Murshidabad (24 ° 5 ’ 56 ’’ N, 88 ° 16 ’ 4 ’’ E) Nadia, West Bengal, 18 th April, coll. Subhra Samanta. Female: (Figures 14 - 22, 56, 57). Dorsum (Figure 14): Length of the idiosoma 408 - 445, width at the level of c setae 324 - 353, propodosoma having longitudinal striation forming a semicircular lobe. Histerosomal striation transverse and longitudinal, between setae e 1 - e 1 and f 1 - f 1 striation pattern longitudinal or oblique, striation between setae e 1 - f 1 forming a diamond-shaped pattern. Length of dorsal setae: v 2 71 - 80, sc 1 128 - 147, sc 2 93 - 107, c 1 126 - 140, c 2 130 - 136, c 3 104 - 114, d 1 131 - 141, d 2 116 - 126, e 1 123 - 131, e 2 128 - 139, f 1 107 - 118, f 2 101 - 111. Distance between dorsal setae: v 2 - v 2 63 - 71, v 2 - sc 1 21 - 27, sc 1 – sc 2 81 - 89, sc 1 - sc 1 84 - 92, sc 2 - sc 2 239 - 257, c 1 - c 1 80 - 90, c 1 - c 2 38 - 46, c 2 - c 3 75 - 83, c 2 - c 2 178 - 186, c 3 - c 3 312 - 325, d 1 - d 1 92 - 102, d 1 - d 2 72 - 80, d 2 - d 2 237 - 248, c 1 - d 1 23 - 31, c 3 - d 2 60 - 68, e 1 - e 1 59 - 69, e 1 - e 2 75 - 83, e 2 - d 2 75 - 83, e 2 - e 2 186 - 197, f 1 - f 1 49 - 55, f 2 - f 2 98 - 108, f 1 - f 2 67 - 73, f 1 - d 1 130 - 140. Venter (Figures 15, 57): Ventral setae slender, smooth. Lengths: 1 a 51 - 60, 1 b 62 - 75, 1 c 76 - 87, 2 b 70 - 80, 2 c 72 - 85, 3 a 46 - 54, 3 b 67 - 77, 4 a 62 - 70, 4 b 63 - 69, ag 65 - 73, g 1 31 - 37, g 2 28 - 34, ps 1 17 - 21, ps 2 15 - 17, h 2 41 - 48, h 3 38 - 44. Striation pattern between intercoxal region transverse; striation in the pregenital region longitudinal, oblique and continuous. Distance between intercoxal setae: 1 a - 1 a 39 - 43, 3 a- 3 a 72 - 84, 4 a- 4 a 71 - 79, ag-ag 86 - 96, g 1 - g 1 26 - 30, g 2 - g 2 84 - 92, g 1 - g 2 31 - 37, ps 1 - ps 1 24 - 26, ps 2 - ps 2 21 - 23, h 2 - h 2 28 - 35, h 3 - h 3 87 - 95.	en	Samanta, Subhra, Bala, Suvash Chandra, Karmakar, Krishna, Ueckermann, Edward A. (2024): Two new records with complementary description of four species of Tetranychus Dufour, 1832 (Acari: Tetranychidae) from West Bengal, India. Records of the Zoological Survey of India 124 (4): 329-340, DOI: 10.26515/rzsi/v124/i4/2024/172827, URL: https://doi.org/10.26515/rzsi/v124/i4/2024/172827
063BDD37FFA7FFB770ED7B6E51B6C631.taxon	description	Gnathosoma (Figures 16, 17, 56): Stylophore rounded, with only longitudinal striation. Peritreme distally hooked, hook length 22 - 25; palpfemur, palpgenu with 1 seta only, palpfemur d PFe 31 - 37, palpgenu l’ ’ PGe 29 - 37, palptibia with three setae and d PTi 18 - 24, l’ PTi 8 - 10, l ” PTi 9 - 11 and a claw; palptarsus (length 11 - 14, wide 12 - 14) with 3 setae a 7 - 9, b 6 - 8, c 7 - 9; one spinneret suζ length 5 - 6, width 4 - 5; one solenidion ω 6 - 7; two eupathidia ul’ζ 3 - 4, ul ” ζ 4 - 5. Spinneret length is slightly longer than two eupathidia. The ratio of length and width of the palptarsus is equal. Leg (Figures 18 - 22): Leg I length 330 - 355, leg II length 226 - 245, leg III length 252 - 270, leg IV length 303 - 334, (from trochanter to tarsus). Setal pattern on leg I – IV coxa 2 - 2 - 1 - 1, trochanter 1 - 1 - 1 - 1, femur 10 - 6 - 4 - 4, genu 5 - 5 - 4 - 4, tibia 9 (1) - 7 - 6 - 7, tarsus 13 (1) + 2 duplex setae- 13 (1) + 1 duplex setae- 9 (1) - 10 (1). Tarsus I with 10 tactile setae, 3 eupathidia, 1 solenidion and 2 sets of proximal duplex setae, 2 proximal tactile setae aligned in line with proximal duplex setae, 1 solenidion and 1 tactile seta proximal to proximal duplex setae; tarsus II with 9 tactile setae, 3 eupathidia, 1 solenidion, 1 set of duplex setae, 1 tactile seta adjacent to duplex setae; tarsus III and IV each having 9 tactile setae and 1 solenidion. Empodia of leg I – IV each with a spur and split into 3 pairs of hair-like structures known as proximoventral hair. Male: (Figures 23 - 26, 58, 59). Aedeagus (( Figures 26, 58 - 59): In the aedeagal knob having a minute posterior projection, anterior projection with a pointed tip, dorsal margin of knob convex, main shaft maximum length 9 - 10, maximum width 5 - 6, maximum neck length 1 - 2, neck width 1 - 2, head length 1 - 2, the axis of the head forming angle with the shaft 60 o. Leg (Figures 23, 24): Tarsus I with 10 tactile setae, 3 solenidia, 3 eupathidia, and 2 sets of duplex setae. Tarsus I bears 2 tactile setae and 3 solenidia proximal to the proximal duplex setae. Tibia I with 4 solenidia, and 9 tactile setae. Tarsus II with 10 tactile setae, 1 solenidion, 3 eupathidia, and 1 set of duplex setae. Tibia II with 7 tactile setae. Empodia split with a prominent spur. Gnathosoma (Figures 25): Palpal setation from femur to tibia d PFe 8 - 10, l’ ’ PGe 20 - 24, d PTi 10 - 12, l’ PTi 6 - 8, l ” PTi 7 - 8. Palpfemur seta d PFe modified into a clavate-shaped structure. palptarsus length 10 - 12, wide 13 - 15; palptarsus with 3 setae a 5 - 7, b 6 - 8, c 6 - 7, 1 spinneret suζ (length 3 - 5, wide 1 - 2), 1 solenidion ω 3 - 4 and two eupathidia ul’ζ 8 - 9, ul ” ζ 7 - 8. Spinneret length and width ratio 3: 1. Remarks: This species was described by Gupta, in 1976 after specimens collected from Pulses and Oilseeds Research Station, Berhampore, Murshidabad, West Bengal, India, on Arachis hypogaea. Due to the non-availability of the holotype, the specimens were recollected from the same locality and host plant that has been identified as Tetranychus hypogaeae Gupta, 1976 by comparing the structure of aedeagus, tarsus of leg I and II mainly the number of setae proximal to the proximal duplex setae, pregenital striation pattern of female and shape of dorsal palp femoral setae of male. A clear variation of the shape of the aedeagus was observed in the present neotype of T. hypogaeae with the original illustration which is suspected due to poor visibility and illustration in the original description. Hence, a complimentary description of the species has been provided in addition to earlier descriptions and illustrations.	en	Samanta, Subhra, Bala, Suvash Chandra, Karmakar, Krishna, Ueckermann, Edward A. (2024): Two new records with complementary description of four species of Tetranychus Dufour, 1832 (Acari: Tetranychidae) from West Bengal, India. Records of the Zoological Survey of India 124 (4): 329-340, DOI: 10.26515/rzsi/v124/i4/2024/172827, URL: https://doi.org/10.26515/rzsi/v124/i4/2024/172827
063BDD37FFA0FFB5730E7E1251DDC301.taxon	materials_examined	Material examined: 13 females (Acarol. lab / BCKV / 4661 - 73 / 61) and 9 males (Acarol. lab / BCKV / 4673 - 81 / 73) collected from amaranthus, Amaranthus cruentus L. (Amaranthaceae) Block Seed Farm, BCKV, Kalyani (22 ° 58 ’ 30 ’’ N, 88 ° 26 ’ 4 ’’ E), Nadia, West Bengal, 27 th May, coll. Subhra Samanta. (Figures 27 - 35; 36 - 39; 60 - 62) Diagnosis: Male: Empodia of leg I-IV with free proximoventral hair, appearing tridigitate with prominent mediodorsal spur. Tarsus I bears 4 tactile setae and 2 solenidia proximal to the proximal duplex setae. Palpfemur setae d PFe forming a clavate-shaped structure. The aedeagal knob has both anterior and posterior projections with a pointed posterior tip, dorsal margin of the knob is irregular which forms an angle of 62 o with the shaft. Female: Striation pattern between setae e 1 - f 1 forming a diamond-shaped pattern. Striation in the pregenital region is longitudinal, oblique and continuous. Peritreme hook length 29 - 33. Tarsus I with 4 setae positioned behind proximal duplex setae. Empodia of each leg split Female: (Figures 27 - 35, 60, 61). Dorsum (Figure 27): Length of the idiosoma 403 - 441, width at the level of c setae 350 - 381, propodosoma set with longitudinal striation forms a semicircular lobe. Histerosomal striation between setae e 1 - f 1 forms a diamond-shaped pattern. Length of dorsal setae: v 2 66 - 79, sc 1 138 - 157, sc 2 85 - 100; c 1 113 - 137, c 2 99 - 115, c 3 89 - 101, d 1 117 - 132, d 2 113 - 125, e 1 115 - 123, e 2 109 - 119, f 1 112 - 123, f 2 61 - 72, h 1 46 - 54. Distance between dorsal setae: v 2 - v 2 63 - 71, v 2 - sc 1 25 - 31, sc 1 – sc 2 88 - 96, sc 1 - sc 1 65 - 73, sc 2 - sc 2 233 - 253, c 1 - c 1 65 - 73, c 1 - c 2 43 - 51, c 2 - c 3 63 - 71, c 2 - c 2 166 - 178, c 3 - c 3 282 - 297, d 1 - d 1 71 - 80, d 1 - d 2 77 - 85, d 2 - d 2 194 - 208, c 1 - d 1 59 - 70, c 3 - d 2 76 - 86, e 1 - e 1 53 - 63, e 1 - e 2 51 - 61, e 2 - d 2 72 - 84, e 2 - e 2 155 - 167, f 1 - f 1 53 - 63, f 2 - f 2 101 - 111, f 1 - f 2 57 - 65, f 1 - d 1 144 - 156, h 1 - h 1 28 - 34. Venter (Figures 28, 61): Ventral setae slender, smooth. Lengths: 1 a 45 - 51, 1 b 62 - 68, 1 c 64 - 72, 2 b 62 - 68, 2 c 61 - 69, 3 a 57 - 65, 3 b 54 - 62, 4 a 73 - 81, 4 b 67 - 75, ag 65 - 71, g 1 29 - 35, g 2 26 - 32, ps 1 15 - 17, ps 2 18 - 20, h 3 36 - 42. The striation pattern in the pregenital region is longitudinal and continuous. Distance between intercoxal setae: 1 a - 1 a 29 - 35, 3 a- 3 a 65 - 71, 4 a- 4 a 79 - 89, ag-ag 74 - 80, g 1 - g 1 48 - 56, g 2 - g 2 107 - 120, g 1 - g 2 32 - 38, ps 1 - ps 1 33 - 37, ps 2 - ps 2 27 - 31, h 3 - h 3 95 - 106.	en	Samanta, Subhra, Bala, Suvash Chandra, Karmakar, Krishna, Ueckermann, Edward A. (2024): Two new records with complementary description of four species of Tetranychus Dufour, 1832 (Acari: Tetranychidae) from West Bengal, India. Records of the Zoological Survey of India 124 (4): 329-340, DOI: 10.26515/rzsi/v124/i4/2024/172827, URL: https://doi.org/10.26515/rzsi/v124/i4/2024/172827
063BDD37FFA0FFB5730E7E1251DDC301.taxon	description	Gnathosoma (Figures 29, 30, 60): Stylophore rounded, with only longitudinal striations. Peritreme distally hooked, hook length 29 - 33; palpfemur, palpgenu with 1 seta only, palpfemur d PFe 33 - 39, palpgenu l’ ’ PGe 29 - 35, palptibia with 3 setae and d PTi 12 - 16, l’ PTi 9 - 13, l ” PTi 18 - 23 and a claw; palptarsus (length 10 - 12, wide 9 - 11) with 3 setae a 8 - 10, b 7 - 9, c 8 - 9); 1 spinneret suζ length 6 - 8 width 3 - 4; 1 solenidion ω 6 - 8; 2 eupathidia ul’ζ 9 - 11, ul ” ζ 11 - 12. Spinneret length is slightly shorter than 2 eupathidia. The ratio of length and width of the palptarsus is equal. Leg (Figures 31 - 35): Leg I length 295 - 320, leg II length 229 - 246, leg III length 233 - 260, leg IV length 301 - 325 (from trochanter to tarsus). Setal pattern on leg I – IV coxa 2 - 2 - 1 - 1, trochanter 1 - 1 - 1 - 1, femur 10 - 6 - 4 - 4, genu 5 - 5 - 4 - 4, tibia 9 (1) - 7 - 6 - 7, tarsus 13 (1) + 2 duplex setae- 13 (1) + 1 duplex setae- 9 (1) - 10 (1). Tarsi I with 10 tactile setae, 3 eupathidia, 1 solenidion and 2 sets of proximal duplex setae, 3 proximal tactile setae and 1 solenidion proximal to proximal duplex setae; tarsus II with 9 tactile setae, 3 eupathidia, 1 solenidion, 1 set of duplex setae, 1 tactile seta adjacent to duplex setae; tarsi III and IV each having 9 tactile setae and 1 solenidion. Empodia of leg I – IV each with a spur and split into 3 pairs of hairlike structures known as proximoventral hair. Male: (Figures 36 - 39, 62). Aedeagus (Figures 39, 62): In the aedeagal knob having both anterior and posterior projections with a pointed tip, the dorsal margin of the knob is irregular, the main shaft maximum length is 14 - 16, the maximum width is 7 - 9, maximum neck length 2 - 3, neck width 1 - 2, head length 2 - 3, axis of the head forming angle with the shaft 62 o. Leg (Figures 36, 37): Tarsus I with 10 tactile setae, 3 solenidia, 3 eupathidia, and 2 sets of duplex setae. Tarsus I bears 4 tactile setae and 2 solenidia proximal to the proximal duplex setae. Tibiae I with 4 solenidia 9 tactile setae. Tarsus II with 10 tactile setae, 1 solenidion, 3 eupathidia, and 1 set of duplex setae. Tibiae II with 7 tactile setae. Empodia split with a prominent spur. Gnathosoma (Figure 38): Palpal setation from femur to tibiae d PFe 7 - 9, l’ ’ PGe 19 - 21, d PTi 20 - 22, l’ PTi 10 - 12, l ” PTi 11 - 13. Palpfemur setae d PFe modified into a clavate-shaped structure. palptarsus length 11 - 13, wide 10 - 12; palptarsus with 3 setae a 8 - 10, b 9 - 11, c 9 - 10, 1 spinneret suζ (length 4 - 6, wide 2 - 3), 1 ω solenidion 4 - 6 and 2 eupathidia ul’ζ 6 - 8, ul ” ζ 7 - 9. Spinneret length and width ratio 2: 1. Remarks: This species was described by Dufour, in 1832 from France on Ulex europaeus. We have identified the species Tetranychus lintearius Dufour, 1832 from Amaranthus, Amaranthus cruentus L. (Amaranthaceae) by comparing the structure of aedeagus, tarsus of leg I and II mainly the number of setae proximal to the proximal duplex setae, pregenital striation pattern of female and shape of dorsal palp femoral seta. A detailed complimentary description of the species has been provided in addition to earlier descriptions and illustrations. Seeman and Beard, 2011 stated that the peritreme hook length of females is 19 – 22 but here peritreme hook length is 25 – 27. We have redescribed the species with proper measurements. This species is reported for the first time from India.	en	Samanta, Subhra, Bala, Suvash Chandra, Karmakar, Krishna, Ueckermann, Edward A. (2024): Two new records with complementary description of four species of Tetranychus Dufour, 1832 (Acari: Tetranychidae) from West Bengal, India. Records of the Zoological Survey of India 124 (4): 329-340, DOI: 10.26515/rzsi/v124/i4/2024/172827, URL: https://doi.org/10.26515/rzsi/v124/i4/2024/172827
063BDD37FFA2FFBA730E7B025474C575.taxon	description	(Figures 40 - 48; 49 - 52; 63 - 66) Diagnosis: Male: Empodia of legs I and II split into proximoventral hairs each with a prominent spur. Tarsus I bears 4 tactile setae and 2 solenidia proximal to the proximal duplex setae. Palpfemur setae d PFe forming a claw-like structure. The aedeagal knob has both anterior and posterior projections, and the dorsal margin of knob is convex which forms an angle of 50 o with the shaft. Female: Striation pattern between setae e 1 - f 1 forming a diamond-shaped pattern. Striation in the pregenital region is longitudinal, oblique and continuous. Peritreme hook length 14 - 16. Tarsus I with 4 setae positioned behind proximal duplex setae. The Empodia of each leg split into 6 proximoventral hairs. Dorsomedian spurs are absent. Spinneret length and width 7 – 8 x 6 – 7. Material examined: 12 females (Acarol. lab / BCKV / 4561 - 72 / 61) and 10 males (Acarol. lab / BCKV / 4372 - 81 / 72) collected from sponge gourd, Luffa aegyptiaca Mill. (Cucurbitaceae) Block Seed Farm, BCKV, Kalyani (22 ° 58 ’ 30 ’’ N, 88 ° 26 ’ 4 ’’ E), Nadia, West Bengal, 27 th April, coll. Subhra Samanta. Female: (Figures 40 - 48, 63 - 64). Dorsum (Figure 40): Length of the idiosoma 442 - 467, width at the level of c setae 313 - 337, propodosomal striation forming a semicircular lobe. Histerosomal striation transverse medially and longitudinal posteriorly, between e 1 - e 1 and f 1 - f 1 striation pattern longitudinal or oblique, striation between dorsocentral setae e 1 - f 1 forming a diamond-shaped pattern. Length of dorsal setae: v 2 61 - 69, sc 1 122 - 136, sc 2 85 - 96, c 1 117 - 130, c 2 112 - 125, c 3 101 - 111, d 1 124 119 - 128, d 2 105 - 114, e 1 110 - 119, e 2 89 - 99, f 1 92 - 101, f 2 78 - 86. Distance between dorsal setae: v 2 - v 2 55 - 63, v 2 - sc 1 27 - 32, sc 1 – sc 2 64 - 72, sc 1 - sc 1 72 - 80, sc 2 - sc 2 188 - 205, c 1 - c 1 63 - 72, c 1 - c 2 49 - 58, c 2 - c 3 44 - 50, c 2 - c 2 156 - 168, c 3 - c 3 247 - 259, d 1 - d 1 64 - 72, d 1 - d 2 67 - 75, d 2 - d 2 185 - 197, c 1 - d 1 58 - 66, c 3 - d 2 70 - 78, e 1 - e 1 52 - 60, e 1 - e 2 87 - 95, e 2 - d 2 63 - 71, e 2 - e 2 198 - 212, f 1 - f 1 55 - 63, f 2 - f 2 72 - 80, f 1 - f 2 52 - 60, f 1 - d 1 115 - 126. Venter (Figures 41, 64): Ventral setae slender, smooth. Lengths: 1 a 58 - 67, 1 b 65 - 73, 1 c 52 - 58, 2 b 79 - 87, 2 c 76 - 83, 3 a 59 - 65, 3 b 52 - 58, 4 a 75 - 83, 4 b 63 - 70, ag 72 - 80, g 1 38 - 44, g 2 36 - 40, ps 1 15 - 19, ps 2 19 - 23, h 2 40 - 43, h 3 42 - 48. Striation pattern between intercoxal region simple and transverse; striation in the pregenital region longitudinal and continuous. Distance between intercoxal setae: 1 a - 1 a 43 - 48, 3 a - 3 a 83 - 90, 4 a - 4 a 87 - 94, ag - ag 93 - 100, g 1 - g 1 26 - 30, g 2 - g 2 27 - 30, g 1 - g 2 31 - 36, ps 1 - ps 1 13 - 16, ps 2 - ps 2 15 - 19, h 2 - h 2 26 - 29, h 3 - h 3 93 - 101. Gnathosoma (Figures 42, 43, 63): Stylophore rounded, with only longitudinal striation. Peritreme distally hooked, hook length 14 - 16; palpfemur, palpgenu with 1 seta only, palpfemur d PFe 33 - 39, palpgenu l’ ’ PGe 27 - 32, palptibia with 3 setae and d PTi 21 - 25, l’ PTi 10 - 12, l ” PTi 11 - 14 and a claw; palptarsus (length 14 - 16, wide 11 - 13) with 3 setae a 5 - 6, b 7 - 8, c 6 - 7; 1 spinneret suζ length 7 - 8 width 6 - 7; 1 solenidion ω 7 - 8; 2 eupathidia ul’ζ 9 - 10, ul ” ζ 8 - 9. Spinneret length is slightly shorter than 2 eupathidia. The ratio of length and width of the palptarsus is equal. Leg (Figures 44 - 48): Leg I length 315 - 344, leg II length 235 - 260, leg III length 206 - 226, leg IV length 276 (262 - 290), (from trochanter to tarsus). Setal pattern on leg I – IV coxa 2 - 2 - 1 - 1, trochanter 1 - 1 - 1 - 1, femur 10 - 6 - 4 - 4, genu 5 - 5 - 4 - 4, tibia 9 (1) - 7 - 6 - 7, tarsus 13 (1) + 2 duplex setae- 13 (1) + 1 duplex setae- 9 (1) - 10 (1). Tarsus I with 10 tactile setae, 3 eupathidia, 1 solenidion and 2 sets of proximal duplex setae, 4 tactile setae proximal to the proximal duplex setae; tarsus II with 9 tactile setae, 3 eupathidia, 1 solenidion, 1 set of duplex setae, 1 tactile seta adjacent to duplex setae; tarsus III and IV each having 9 tactile setae and 1 solenidion. Empodia of leg I – IV each without a spur and split into 3 pairs of proximoventral hair. Male: (Figures 49 - 52, 65, 66). Aedeagus (Figures 52, 65, 66): In the aedeagal knob having both anterior and posterior projection, the dorsal margin of knob is convex, the shaft is wider, main shaft maximum length is 8 - 9, the maximum width is 4 - 5, maximum neck length 1 - 2, neck width 1 - 2, head length 2 - 3, the axis of the head forming angle with the shaft 50 o. Leg (Figures 49, 50): Tarsus I with 10 tactile setae, 3 solenidia, 3 eupathidia, and 2 sets of duplex setae. Tarsus I bears 4 tactile setae and 2 solenidia proximal to the proximal duplex setae. Tibiae I with 4 solenidia 9 tactile setae. 4 tactile setae 2 solenidia proximal to the proximal duplex setae. Tarsus II with 10 tactile setae, 1 solenidion, 3 eupathidia, and 1 set of duplex setae. Tibiae II with 7 tactile setae. Empodia of legs I and II split with a prominent spur. Gnathosoma (Figure 51): Palpal setation from femur to tibiae d PFe 8 - 9, l’ ’ PGe 22 - 28, d PTi 20 - 24, l’ PTi 12 - 14, l ” PTi 13 - 17. Palpfemur setae d PFe modified into a clawlike structure. palptarsus length 11 - 13, wide 9 - 11; palptarsus with 3 three setae a 8 - 9, b 9 - 10, c 10 - 11, 1 spinneret suζ length 5 - 6, wide 2 - 3, one solenidion ω 6 - 7 and 2 eupathidia ul’ζ 6 - 7, ul ” ζ 7 - 8. Spinneret length and width ratio 2: 1.	en	Samanta, Subhra, Bala, Suvash Chandra, Karmakar, Krishna, Ueckermann, Edward A. (2024): Two new records with complementary description of four species of Tetranychus Dufour, 1832 (Acari: Tetranychidae) from West Bengal, India. Records of the Zoological Survey of India 124 (4): 329-340, DOI: 10.26515/rzsi/v124/i4/2024/172827, URL: https://doi.org/10.26515/rzsi/v124/i4/2024/172827
