Amblyseius crotalariae Gupta, 1977

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 : 43-44

Amblyseius crotalariae Gupta, 1977

( Figs 1–7 , 79–80 )

Amblyseius crotalariae GUPTA, 1977 : 53.

Amblyseius (Typhlodromips) crotalariae .—GUPTA, 1986: 162; 1987A: 60.

Female (n = 16). Dorsum ( Fig. 1 ). Dorsal shield 298 (288–308) long and 173 (163–183) wide, elliptical in shape, smooth with marks of sigilla mostly on the prodorsum, slightly concave at the waist, seven pairs of solenostomes (gd1, gd2, gd4, gd5, gd6, gd8 and gd9), and with four pairs lateral lyrifissures; 17 pairs of setae on the dorsal shield and two pairs of setae on the unsclerotised cuticle: j1 17 (17–18), j3 24 (23–25), j4 7 (7–8), j5 7 (7–8), j6 8 (8–9), J2 10 (10–11), J5 6 (6–7), z2 9 (9–10), z4 10 (10–11), z5 6 (6–7), Z1 9 (8–10), Z4 53 (50–55), Z5 72 (70–73), s4 39 (38–40), S2 9 (9–10), S4 8 (8–9), S5 7 (7–8), r3 12 (12–13), R1 8 (8–9). All setae smooth except Z4 and Z5 which are lightly serrated, setae j1, j3, are long and setae s4, Z4, and Z5 are longer.

Peritreme ( Fig. 1 ). Extending to bases of j1. There are two parallel rows of microtubercles on the peritreme.

Venter ( Fig. 2 ). All shields smooth. Sternal shield 55 (55–56) long and 65 (65–66) 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 distinct metasternal plate with a pairs of conspicuous lyrifissures; posterior margin of sternal shield slightly concave and clearly outlined in all specimens. Distances between ST2–ST2 59 (58–60), ST5–ST5 62 (60–63). Two pairs of metapodal shields, primary shield 15 (15–16) long and secondary shield 12 (11–13) long. Ventrianal shield 99 (95–103) long, 62 (62–63) wide at level of ZV2 setae and 62 (60–63) wide at level of anus, indented laterally with two pairs of lateral protuberance. There are 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 32 (29–34) long, smooth.

Chelicera ( Figs 3 , 79 ). Fixed digit 25 (25–26) long, with 11 teeth; movable digit 27 (26–28) long, with three backwardly-directed teeth.

Spermatheca ( Figs 4 , 80 ). Calyx bell-shaped, flaring at base of vesicle and tapering towards atrium, 10 (9–11) long, with conspicuous bean-shaped atrium from where thick major duct extended and minor duct arises.

Legs ( Fig. 5 ). Leg IV with three smooth macrosetae pointed distally and of the following lengths: genu 52 (50–53), tibia 40 (38–42), basitarsus 61 (58–63). Chaetotactic formula of genu II: 1 2/1, 2/0 1; genu III: 1 2/1, 2/0 1. Length of leg I: 288 (280–295), leg II: 235 (230–240), leg III: 236 (228–243), leg IV: 315 (305–325).

Male (n = 10). A lightly sclerotised mite with 19 pairs of dorsal setae. Idiosomal setal pattern: 10A: 9B/ JV –3,4: ZV –1,3.

Dorsum. Dorsal shield 232 (230–233) long and 153 (150–155) wide, smooth and 19 pairs of setae on dorsal shield: j1 17 (16–18), j3 27 (27–28), j4 6 (6–7), j5 6 (5–7), j6 7 (6–8), J2 7 (7–8), J5 5 (5–6), z2 8 (8–9), z4 9 (8–10), z5 6 (5–7), Z1 7 (6–8), Z4 37 (35–38), Z5 51 (50–52), s4 28 (28–29), S2 7 (7–8), S4 6 (6–7), S5 5 (5–6), r3 11 (10–12), R1 7 (6–8). All the setae smooth, except Z4 and Z5 which are lightly serrated.

Peritreme. Extending to level of j1.

Venter ( Fig. 6 ). Sternogenital shield with lateral lines, ventrianal shield lightly striated. Sternigenital shield with five pairs of setae and three pairs of distinguishable lyrifissures. Ventrianal shield 107 (105–108) long, 95 (90–100) wide at the level of ZV2 setae, 53 (50–55) wide at the level of anus; with three pairs of pre-anal setae, JV1, JV2 and ZV2, one pair of pores and three pairs of distinguishable lyrifissures. Unsclerotised membrane surrounding ventrianal shield with one pair of setae, JV5, at level of anal opening.

Legs. Leg IV with three smooth macrosetae pointed distally, lengths; genu 39 (38–40), tibia 30 (30–31), basitarsus 44 (43–44). Chaetotactic formula of genu II: 1 2/1, 2/0 1; genu III: 1 2/1, 2/0 1. Length of leg I: 257 (253–260), leg II: 203 (200–205), leg III: 202 (198–205), leg IV: 277 (275–280).

Chelicera ( Fig. 7 ). Spermatodactyl with an elongated shaft 23 (20–25) long, terminating with a wide toe, 6 (6–7) long.

Specimens examined. 12 females (Acarol. lab/ BCKV /8156-8167/2016), collected from fern, Athyrium pycnocarpon (Polypodiaceae) , at Dinhata : 26°12´91" N, 89°46´95" E, 36 m above mean sea level, Cooch Behar , West Bengal on 6 December 2016 ; 2 females, Registration number 5756/17 deposited in the National Zoological Collection (NZC), Zoological Survey of India , Kolkata with same collection data as above ; 1 female, Registration number 5757/17 deposited in the NZC, Zoological Survey of India, Kolkata with same collection data as female specimens on 6 December 2016 ; 2 males, Registration number 5758/17 deposited in the National Zoological Collection (NZC), Zoological Survey of India , Kolkata with same collection data as female specimens on 6 December 2016 ; 2 males ( Acarol. lab/ BCKV /8168-8169/2016) with same collection data as female specimens on 6 December 2016 .

Distribution. Asia: India, Arunachal Pradesh: Gupta (1987b); Assam: Gupta (1978); Meghalaya: Gupta (1978); Tripura: Gupta (1978); West Bengal: Gupta (1977); Gupta (1986); Gupta (1992).

Remarks. This species appears to be confined to fern at Cooch Behar district of sub-Himalayan terai zone of West Bengal.

Figures

FIGURES 1–7. Amblyseius crotalariae (FEMALE). 1. DORSAL VIEW OF IDIOSOMA; 2. VENTRAL VIEW OF IDIOSOMA; 3. CHELICERA; 4. SPERMATHECA; 5. GENU, TIbIA AND bASITARSUS IV; 6. VENTRAL VIEW OF IDIOSOMA (MALE); 7. SPERMATODACTYL.

FIGURES 79–99. 79–80. Amblyseius crotalariae (GUPTA, 1977), CHELICERA, SPERMATHECA; 81–82. Amblyseius guajavae (GUPTA, 1978), CHELICERA, SPERMATHECA; 83–84. Typhlodromips syzygii (GUPTA, 1975), CHELICERA, SPERMATHECA; 85–86. Scapulaseius moraesi sp. nov.; CHELICERA, SPERMATHECA; 87–88. Scapulaseius asiaticus (EVANS, 1953), CHELICERA, SPERMATHECA; 89–91. Euseius sundarbanensis sp. nov.; CHELICERA, SPERMATHECA, SPERMATODACTYL; 92–93. Euseius astrictus SP. NOV;. CHELICERA, SPERMATHECA; 94–96. Asperoseius latericulus sp. nov.; CHELICERA, SPERMATHECA, VENTRIANAL SHIELD; 97–99. Asperoseius jujubae sp. nov., CHELICERA, SPERMATHECA, SPERMATODACTYL.