Typhlodromus (Anthoseius) carambolae, Karmakar & Bhowmik, 2018

Karmakar, Krishna & Bhowmik, Sagarika, 2018, Description of eight new species and re-description of four species belonging to the family Phytoseidae (Acari: Mesostigmata) from West Bengal, India, Zootaxa 4422 (1), pp. 41-77 : 65

Typhlodromus (Anthoseius) carambolae sp. nov.

( Figs 62–66 , 100–102 )

Female (n = 4). Dorsum ( Fig. 62 ). Dorsal shield 337, 343 (335–350), long and 175, 178 (168–188) wide, strongly sclerotised and imbricated, with three pairs of solenostomes (gd5, gd8 and gd9); 18 pairs of dorsal setae and two pairs of sublateral setae: j 1 16, 19 (15–22), j 3 16, 15 (15–16), j 4 9, 10 (8–11), j5 8, 9 (6–12), j 6 10, 12 (9–15), J 2 15, 14 (13–15), J 5 12, 12 (12–13), z 2 14, 15 (13–16), z 3 14, 15 (12–17), z 4 14, 15 (13–17), z5 6, 7 (5–8), Z 4 20, 21 (19–23), Z5 34, 34 (33–35), s 4 16, 17 (15–18), s 6 18, 19 (17–21), S 2 19, 20 (18–22), S 4 22, 21 (20–22), S 5 23, 22 (22–23), r 3 15, 15 (15–16), R 1 16, 17 (15–18). All the marginal setae on the dorsal shield are serrated while the docentral setae are smooth; setae Z5 is longest and knobbed at the tip.

Peritreme ( Fig. 62 ). Extending forward beyond the bases of j1.

Venter ( Fig. 63 ). All shields smooth, sternal shield 67, 68 (66–70) long and 63, 64 (62–65) 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; both sides of posterior margin of sternal shield strongly invaginated in all specimens. Distances between ST2–ST2 52, 54 (52–55), ST5–ST5 55, 57 (53–60). Two pairs of metapodal shields, primary shield 29, 28 (25–31) long, secondary shield 10, 10 (10–11) long. Ventrianal shield pentagonal, 120, 118 (113–122) long, 90, 92 (88–95) wide at level of ZV2 setae and 74, 77 (73–80) wide at level of anus; with four pairs of pre-anal setae, JV1, JV2, JV3 and ZV2, with elongated protuberance along lateral inner margin of posterior ventrianal shield, and with one pair of pre-anal pores. Membrane surrounding ventrianal shield with four pairs of setae: ZVl, ZV3, JV4 and JV5; the latter 28, 29 (28–30) long, serrated and knobbed at the tip.

Chelicera ( Figs 64 , 101 ). Fixed digit 32, 31 (31–32) long, with four teeth and with blunt rounded anterior tip; movable digit 31, 30 (30–31) long, with three teeth and rounded apical part.

Spermatheca ( Figs 65 , 100 ). Calyx funnel-shaped 30, 31 (29–33) long with claw like atrium, minor and major duct visible.

Legs ( Fig. 66 ). Legs IV with three smooth macrosetae with knobbed tips, of the following lengths: genu 13, 14 (12–15), tibia 14, 14 (13–15), basitarsus 25, 24 (24–25) ( Fig. 102 ). Chaetotactic formula of genu II: 1–2/1, 2/0–1; genu III: 1–2/0, 2/1–1. Length of leg I: 274, 272 (268–275), leg II: 230, 217 (200–233), leg III: 223, 213 (200–225), leg IV: 326, 327 (323–330).

Type Specimens. Holotype: female (Acar.lab/BCKV/8265/2016) (Registration number 4415/17 deposited in the NZC, Zoological Survey of India, Kolkata) collected from Star fruit, Averrhoa carambola (Oxalidaceae) at Mondouri: 22° 56' 32"N, 88° 30' 51"E, 9 m above mean sea level, Nadia, West Bengal on 21 June 2016; 2 paratype females (Acar.lab/BCKV/8266/2016) (Registration number 4416/17 deposited in the NZC, Zoological Survey of India, Kolkata) with same collection data as holotype female; 1 paratype female (Acar.lab/BCKV/8267/2017), collected from Wild Tulsi, Oscimum sp., ( Verbenaceae ), at Narayanpur, Namkhana: 21°76’99”N 88°23’15”E, 4 m above mean sea level South 24 Parganas, West Bengal on 9 April 2017

Etymology. The specific name carambolae refers to the host plant, star fruit, Avarrhoa carambola from which the holotype was collected.

Remarks. Typhlodromus (Anthoseius) carambolae is close to T. (A.) brisbanensis ( Schicha, 1978a) , T. (A.) fujianensis (Wu & Liu,1991, and T. (A.) dahungensis Pramanik & Karmakar, 2016 . The former species differs from the latter species by its short dorsal shield setae Z4 21 and Z5 34 which are much longer Z4 28 and Z5 50 in T. (A.) brisbanensis . All the dorso-lateral setae are serrated in the former species including Z4, r3 and R1, while the dorsal shield setae are smooth except Z4 and Z5, which are serrated in the latter species. The shape of the sternal and ventrianal shields and the shape and dentition of the fixed digit of the chelicera of the former species differs from the latter species. The former species strongly differs from T. (A.) fujianensis by the posterior margin of the sternal shield, the shape of the spermatheca and the size and shape of dorsal shield setae. The posterior margin of the sternal shield is concave, only setae Z4 and Z5 are serrated and spermatheca calyx is short in T. (A.) fujianensis , while the posterior margin of sternal shield is strongly invaginated, all the dorso-lateral setae are serrated, and the spermatheca is funnel-shaped with a conspicuous atrium in the former species. Typhlodromus (A.) carambolae also widely differs from the T. (A.) dahungensis by posterior margin of sternal shield, shape of spermatheca and length of macrosetae of leg IV.

Figures

FIGURES 62–66. Typhlodromus (Anthoseius) carambolae (FEMALE). 62. DORSAL VIEW OF IDIOSOMA; 63. VENTRAL VIEW OF IDIOSOMA; 64. CHELICERA; 65. SPERMATHECA; 66. GENU, TIbIA AND bASITARSUS IV.

FIGURES 100–111. 100–102. Typhlodromus (Anthoseius) carambolae sp. nov.; SPERMATHECA, CHELICERA, LEG IV; 103–105. Typhlodromus (Anthoseius) heliotropium sp. nov.; CHELICERA, SPERMATHECA VENTRIANAL SHIELD; 106–111. Phytoseius namkhanaensis sp. nov.; DORSAL SHIELD, VENTRIANAL SHIELD, SPERMATHECA, SPERMATODACTYL, LEG IV, CHELICERA.