Description of four new species of phytoseiid mites belonging to the genus Typhlodromus (Anthoseius) De Leon from West Bengal Author Molla, Md. Iftiar Hossain 0000-0001-8870-6929 https: // orcid. org / 0000 - 0001 - 8870 - 6929 Author Kar, Anamika 0000-0001-5318-8308 https: // orcid. org / 0000 - 0001 - 5318 - 8308 Author Bala, Suvash Chandra 0000-0002-5577-3778 https: // orcid. org / 0000 - 0002 - 5577 - 3778 Author Kar, Krishna Karma- text Zootaxa 2021 2021-03-26 4949 3 541 556 journal article 7569 10.11646/zootaxa.4949.3.6 0cb899e5-5d69-4903-a2ff-a888ae1b1ece 1175-5326 4640717 3F3416D7-70B6-4312-8642-4BE0B5308440 Typhlodromus ( Anthoseius ) De Leon, 1959 Type species: Anthoseius hebetis De Leon, 1959: 258 . Key to the species of Typhlodromus ( Anthoseius ) described or reported from West Bengal , India based on Hernandes et al . (2012). 1. Ventrianal shield with three pairs of pre-anal setae........................................................... 2 - Ventrianal shield with four pairs of pre-anal setae........................................................... 3 2. Dorsal shield slightly reticulated with a deep incision at the level of R1; fixed digit of chelicera with four teeth.......................................................................................... T . majumderi Gupta 1986 - Lateral margin of dorsal shield strongly striated with a deep incision at the lateral margin of waist region; fixed digit of chelicera with seven teeth................................................... T . heliotropium Karmakar & Bhowmik, 2018 3. All dorsal shield setae bulbous........................................................... T . bulbosis sp. nov. - All dorsal shield setae not bulbous........................................................................ 4 4. All the dorsal shield setae serrated....................................................................... 5 - All the dorsal shield setae not serrated.................................................................... 6 5. Sternal shield with three pairs of setae................................................... T . bengalensis sp. nov. - Sternal shield with two pairs of setae...................................................... T . adhatoda sp. nov. 6. All dorsolateral setae serrated and dorsocentral setae smooth............... T . carambolae Karmakar & Bhowmik, 2018 - All dorsal setae smooth or only Z4 and Z5 serrated.......................................................... 7 7. Leg IV with three macrosetae........................................................................... 8 - Leg IV with single macroseta........................................................................... 9 8. Setae j3 , z3 , s4 , s6 and Z5 elongated, setae z2 , z4 and S5 short, setae Z4 and Z5 smooth, pointed....... T . pruni Gupta, 1970 - Setae j3 , z3 , s4 , s6 and Z5 not elongated, setae z2 , z4 and S5 short, setae Z4 and Z5 serrated......................... 10 9. Setae S2 longer, more than 30 µm ....................................................... T . gopali Gupta, 1969 - Seta S2 shorter, less than 30 µm ......................................................................... 11 10. Seta S5 longer, posterior margin of sternal shield with deep cleft............................. T . persicus Gupta, 1992 - Seta S5 shorter, posterior margin of sternal shield concave............................ T . darjeelingensis Gupta, 1986 11. Setae Z4 and Z5 smooth, macrosetae on Leg IV pointed.................................. T . communis Gupta, 1978 - Setae Z4 and Z5 serrated, macrosetae on Leg IV bulbous..................................................... 12 12. Seta StIV , long 21–33 µm ........................................................... T . fleschneri Chant, 1960 - StIV short, 15–20 µm ................................................................................. 13 13. Seta j5 long 18–22 µm ;, movable digit with three teeth....................................... T . sagaricus sp. nov. - Seta j5 short 13–20 µm ;, movable digit without teeth........................................ T . homalii Gupta 1970