Typhlodromus (Anthoseius) bolpurensis, Bhowmik & Karmakar, 2021

Bhowmik, Sagarika & Karmakar, Krishna, 2021, Five new species and re-description of eight species belonging to the family Phytoseiidae (Acari: Mesostigmata) from West Bengal, India, Zootaxa 4975 (3), pp. 401-450 : 433-435

Typhlodromus (Anthoseius) bolpurensis sp. nov.

( Figs 63–67 , 114–116 )

Female (n =4).

Diagnosis. Dorsal shield is highly sclerotised and imbricated. Idiosomal setal pattern 12A: 8A. All setae are small to medium in length, Z5 longest. All the marginal setae of the dorsal shield are serrated while the dorsocentral setae are smooth except setae j1 and j3. Spermatheca cup-shaped with prominent bent neck and bean-shaped atrium. Posterior margin of sternal shield is inconspicuous and ventrianal shield is pentagonal in shape.

Dorsum ( Fig. 63 ). Dorsal shield 323 (321–328) long and 163 (161–166) wide, strongly sclerotised and imbricated, with six pairs of solenostomes (gd1, gd2, gd4, gd5, gd8 and gd9); 18 pairs of dorsal setae and two pairs of sublateral setae: j1 18 (16–20), j3 15 (14–16), j4 11 (10–12), j5 11 (10–12), j6 13 (12–15), J2 15, J5 12, z2 13, z3 15, z4 15, z5 11, Z4 20, Z5 32, s4 16, s6 18, S2 18, S4 21, S5 21, r3 15, R1 15. All the marginal setae of dorsal shield are serrated while the dorsocentral setae are smooth except setae j1 and j3. Seta Z5 is longest.

Peritreme ( Fig. 63 ). Extending forward up to the bases of j1.

Venter ( Fig. 64 ). All shields smooth, sternal shield 63 long and 65 wide at level of setae ST1–ST3 and ST3–ST3 respectively, with three pairs of setae and two pairs of lyrifissures; one pair of setae (ST4) on the metasternal plates with conspicuous lyrifissures. Distances between ST2–ST2 53, ST5–ST5 50. Two pairs of metapodal shields, primary shield 23 long, secondary shield 10 long. Ventrianal shield pentagonal, 113 long, 85 wide at level of ZV2 setae and 75 wide at level of anus; with four pairs of pre-anal setae, JV1, JV2, JV3 and ZV2, with one pair of pre-anal pores anterior to anal opening. Membrane surrounding ventrianal shield with four pairs of setae: ZVl, ZV3, JV4 and JV5; the latter 28 long, serrated.

Chelicera ( Fig. 65 ). Fixed digit 28 long, with five teeth, pilus dentilis indistinct, and movable digit 28 long, with two teeth.

Spermatheca ( Fig. 66 ). Calyx bell-shaped 6 long with a narrow neck atrium bean-shaped with minor and major ducts distinctly visible.

Legs ( Fig. 67 ). Legs IV with three smooth macrosetae and of the following lengths: SgeIV 15, StiIV 16, StIV 20. Chaetotactic formula of genu II: 1 2/1, 2/0 1; genu III: 1 2/0, 2/1 1. Length of leg I: 253, leg II: 213, leg III: 205, leg IV: 300.

Type Specimen. Holotype: Female (Acarol.lab/ BCKV /8283/2017), collected from Atashi flower, Calpurnia aurea (Fabaceae) , at Surul, Bolpur: 23°40’13.04” N, 87°39’25.03” E, 58 m above mean sea level, Birbhum, West Bengal on 14 October 2017. Three female paratype (Acarol.lab/ BCKV /8630–8632/2017), collected from same location with same host similar to the holotype on 22 August 2019. Holotype and paratype female (Acarol.lab/ BCKV /8630/2017) have been deposited in the National Zoological Collection (NZC), Zoological Survey of India, Kolkata with same collection data as above.

Distribution. Asia: India, West Bengal.

Etymology. The specific name bolpurensis refers to the locality, Bolpur in the Birbum district of West Bengal and is famous for Viswavarati University from where the type of this species was collected.

Remarks. Typhlodromus (Anthoseius) bolpurensis is close to T. (Amblydromella) homalii Gupta, 1970 ; T. (Anthoseius) carambolae Karmakar & Bhowmik, 2018 and T. (Amblydromella) chrysanthemi Gupta, 1977c but differs in dorsal setal shape, posterior margin of the sternal shield, shape of the genital and ventrianal shields, and shape and length of macrosetae on leg IV. The setae Z4 and Z5 of the new species are shorter and with pointed tips while in the latter species, Z4 and Z5 they are longer and with knobbed tip. All the z -Z and s -S series setae of the former species are serrated while except Z4 and Z5 all the setae of the latter species are smooth.

Figures

FIGURES 63–67. Typhlodromus (Anthoseius) bolpurensis sp. nov. (female). 63. Dorsal idiosoma; 64. Ventral idiosoma; 65. Chelicera; 66. Spermatheca; 67. Genu, tibia and basitarsus IV.

FIGURES 114–124. 114. Typhlodromus (Anthoseius) bolpurensis, female, ventrianal shield; 115. Typhlodromus (Anthoseius) bolpurensis, female, leg IV; 116. Typhlodromus (Anthoseius) bolpurensis, female, chelicera. 117. Phytoseius mauritiana, female, chelicera; 118. Phytoseius mauritiana, female, leg IV; 119. Phytoseius mauritiana, female, spermatheca. 120. Phytoseius kapuri, female, dorsal idiosoma; 121. Phytoseius kapuri, female, leg IV; 122. Phytoseius kapuri, female, spermatheca; 123. Phytoseius kapuri, male, chelicera; 124. Phytoseius kapuri, female, ventrianal shield.