Proprioseiopsis amari, 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 : 431-433

Proprioseiopsis amari sp. nov.

( Figs 58–62 , 111–113 )

Female (n=3)

Diagnosis. Dorsal shield smooth with light marks of sigilla. Idiosomal setal pattern 10A: 8E/ JV –3: ZV. Setae j4, j5, j6, z5 and J5 are short, j1, z2, z4, Z1, S2, S4, S5, r3 and R1 are short to medium in length and setae j3, s4, Z4, and Z5 are medium to long. All setae smooth, spermatheca tubular and atrium with distinct major duct and minor ducts. Posterior margin of sternal shield concave, ventrianal shield is pentagonal. Both shields show high ornamentation.

Dorsum ( Fig. 58 ). Dorsal shield 335, 334 (333–335) long and 207, 203 (198–207) wide, five pairs of solenostomes (gd2, gd5, gd6, gd8 and gd9); 16 pairs of dorsal setae and two pairs of sublateral setae: j1 23, 23 (22–23), j3 60, 60 (58–62), j4 5, 6 (5–6), j5 7, 7 (6–7), j6 8, 8 (7–8), J5 9, 9 (8–9), z2 41, 39 (36–41), z4 26, 26 (23–29), z5 8, 8 (7–8), Z1 18, 18 (18–19), Z4 93, 92 (88–95), Z5 70, 73 (70–75), s4 88, 88 (87–89), S2 23, 22 (21–23), S4 12, 12, S5 12, 12 (11–12), r3 21, 20 (18–21), R1 14, 14 (13–14). All setae smooth; j3, s4, Z4, and Z5 are long.

Peritreme ( Fig. 58 ). Extending forward beyond the bases of j1.

Venter ( Fig. 59 ). All shields ornamented. Sternal shield width 57, 57 (55–60) long 85, 88 (85–90) wide at level setae ST1–ST3 and ST3–ST3 respectively, with three pairs of setae and two pairs of lyrifissures; one pair of setae (ST4) on the membrane; posterior margin concave and visible. Distances between ST2–ST2 69, 71 (69–73), ST5– ST5 94, 93 (89–96). Two pairs of metapodal shields, primary shield 25, 26 (25–26) long, secondary shield small 9, 10 (9–10) long. Ventrianal shield pentagonal 107, 110 (107–113) long, 110, 109 (108–110) wide at level of ZV2 setae and 77, 77 (75–79) wide at level of anus; with three pairs of pre-anal setae, JV1, JV2 and ZV2, and one pair of large elliptical pre-anal pores. Membrane surrounding ventrianal shield with four pairs of setae ZVl, ZV3, JV4 and JV5 the latter; 70, 71 (69–73) long, smooth.

Chelicera ( Fig. 60 ). Fixed digit 26, 26 (25–27) long, with seven teeth, pilus dentilis distinct; movable digit 27, 27 (26–27) long, with one tooth.

Spermatheca ( Fig. 61 ). Calyx of spermatheca tubular in shape, 19, 18 (17–19) long. Atrium distinct with major and minor duct.

Legs ( Fig. 62 ). Legs IV with three smooth macrosetae with pointed tips, of the following lengths: SgeIV 56, 57 (54–60), StiIV 38, 38 (35–40), StIV 77, 79 (77–80). Chaetotactic formula of genu II: 1 2/1, 2/0 1; genu III: 0 2/1, 2/1 0. Length of leg I: 375, 382 (375–388), leg II: 280, 280 (279–281), leg III: 279, 278 (275–280), leg IV: 383, 385 (383–387).

Type specimens. Holotype: female (Acar.lab/ BCKV /8281/2016) collected from Debdaru, Polyalthia longifolia (Annonaceae) , at Jhilimili: 22° 49’ 01”N, 86° 37’ 00”E, 228 m above mean sea level, Bankura, West Bengal on 4 April 2018; One paratype female (Acar.lab/ BCKV /8281/2016), same collection data as holotype female. The holotype and paratype female have been deposited in the National Zoological Collection (NZC), Zoological Survey of India, Kolkata. One paratype female (Acar.lab/ BCKV /8282/2016) collected from Jam, Syzygium cumini (Myrtaceae) , with same collection data as holotype female.

Distribution. Asia: India, West Bengal.

Etymology. The specific name amari is dedicated to the late Professor Amar Kumar Somchoudhury, who has contributed significantly on different aspects of mite pests management during his period at Bidhan Chandra Krishi Viswavidyalaya.

Remarks. Proprioseiopsis amari is close to P. peltatus Van der Merwe, 1968 , P. ovatus Garman, 1958 and P. belizensis Yoshida-Shaul & Chant, 1991 . The new species differs from P. peltatus by shorter j3, Z4, Z5, s4 setae and a difference in dorsal ornamentation, which is smooth in the new species vs. lightly reticulated anterio-laterally in P. peltatus . The new species differs from P. ovatus by having shorter macrosetae on tibia and tarsus of leg IV, length of calyx, and longer Z4 and Z5 setae than P. ovatus . Moreover, the ventrianal shield is shorter and the peritreme extends beyond j 1 in the new species, while the peritreme extend up to base of j1 and the ventrianal shield is longer in P. ovatus . Proprioseiopsis amari also differs from P. belizensis by the much shorter j3, Z4, Z5, s4 setae than the latter species and also the dorsal shield is smooth as compared to reticulated in P. belizensis .

Figures

FIGURES 58–62. Proprioseiopsis amari sp. nov. (female). 58. Dorsal idiosoma; 59. Ventral idiosoma; 60. Chelicera; 61. Spermatheca; 62. Genu, tibia and basitarsus IV.

FIGURES 106–113. 106. Typhlodromips jhilimiliensis, female, sternal shield; 107. Typhlodromips jhilimiliensis, female, ventrianal shield. 108; Typhlodromips neosyzygii, female, sternal shield; 109. Typhlodromips neosyzygii, female, genital shield; 110. Typhlodromips neosyzygii, female, ventrianal shield; 111. Proprioseiopsis amari, female, chelicera; 112. Proprioseiopsis amari, female, spermatheca; 113. Proprioseiopsis amari, female, genital and ventrianal shields.