Scapulaseius moraesi

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: 50-51

publication ID

https://doi.org/10.11646/zootaxa.4422.1.3

publication LSID

lsid:zoobank.org:pub:68D70470-6E6C-498D-AAF6-DA3CA8F93D2E

persistent identifier

http://treatment.plazi.org/id/93548244-FF9B-FF95-588E-FCBA8B9221EF

treatment provided by

Plazi

scientific name

Scapulaseius moraesi
status

sp. nov.

Scapulaseius moraesi  sp. nov.

( Figs 22–28 View Figure , 85–86 View Figure )

Female (n = 10). Dorsum ( Fig. 22 View Figure ). Dorsal shield 315, 320 (313–327) long and 199, 203 (195–210) wide, ovoid, posterior part wider than anterior part, almost without any narrowing at the waist region, smooth, with marks of sigilla mostly on the prodorsum, and with parallel lines along the lateral sides of the dorsum, with seven pairs of solenostomes (gd1, gd2, gd4, gd5, gd6, gd8 and gd9); 18 pairs of setae on the dorsal shield and one pair (r3) of setae on the unsclerotised cuticle: j 1 17, 18 (16–20), j 3 12, 13 (12–14), j 4 10, 11 (9–12), j 5 8, 10 (8–11), j 6 12, 12 (11–13), J 2 13, 14 (12–15), J5 8, 9 (8–10), z 2 11, 12 (10–14), z 4 11, 13 (11–14), z 5 9, 10 (8–11), Z 1 12, 12 (10–14), Z 4 28, 27 (27–28), Z5 78, 79 (77–80), s 4 17, 17 (17–18), S 2 14, 14 (13–15), S 4 15, 14 (13–15), S 5 11, 11 (9–13), r 3 12, 13 (11–15), R 1 11, 12 (11–13). All setae smooth and short, setae Z5 long, setae J5 inserted anterior to posterior dorsal shield margin.

Peritreme ( Fig. 22 View Figure ). Extending forward beyond bases of j1 with two parallel rows of microtubercles.

Venter ( Fig. 23 View Figure ). All shields smooth. Sternal shield 53, 53 (53–54) long and 64, 64 (63–65) 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 metasternal plate with a pair of conspicuous lyrifissures at the anterior part; posterior margin of sternal shield slightly concave. Distances between ST2–ST2 58, 58 (58–59), ST5–ST5 63, 62 (60–64). Genital shield flask shape, bulged laterally and a small notch posterior lateral side posterior margin truncated. Two pairs of metapodal shields, primary shield 19, 18 (18–19) long and secondary shield 12, 11 (11–12) long. Ventrianal shield 106, 107 (105–108) long, 85, 88 (83–93) wide at level of ZV2 setae and 74, 77 (73–80) 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 21, 22 (20–23) long, smooth.

Chelicera ( Fig. 24 View Figure , 85 View Figure ). Fixed digit 27, 27 (27–28) long, with nine teeth; movable digit 26, 26 (26–27), with three teeth.

Spermatheca ( Fig. 25 View Figure , 86 View Figure ). Calyx elongate 16, 16 (14–17) long, tubular and flared at the base of vesicle, slightly narrow near atrium, the atrium thick with three grooves from where the distinct minor and major duct arises.

Legs ( Fig. 26 View Figure ). Legs IV with three smooth macrosetae pointed distally and of the following lengths: genu 25, 25 (24–26), tibia 21, 21 (21–22), basitarsus 50, 50 (49–51). Chaetotactic formula of genu II: 1–2/1, 2/0–1; genu III: 1–2/1, 2/0–1. Length of leg I: 271, 278 (263–288), leg II: 220, 222 (215–228), leg III: 220, 222 (215–228), leg IV: 297, 299 (293–305).

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

Dorsum. Dorsal shield 250, 252 (245–258) long and 165, 168 (163–173) wide, smooth. 17 pairs of setae on dorsal shield and two pairs of setae on unsclerotised cuticle: j 1 13, 14 (12–16), j 3 13, 14 (13–15), j4 8, 9 (7–10), j 5 10, 10 (9–11), j 6 10, 11 (9–12), J 2 11, 12 (10–13), J5 7, 7 (6–8), z 2 13, 12 (12–13), z 4 13, 13 (12–14), z 5 9, 10 (9–11), Z 1 11, 11 (10–12), Z 4 20, 21 (20–22), Z5 55, 54 (53–55), s 4 16, 15 (15–16), S 2 12, 13 (12–14), S 4 11, 12 (10–13), S 5 12, 11 (11–12), r 3 12, 13 (11–14), R 1 10, 11 (9–12). All setae smooth and short setae Z5 long.

Peritreme. Extending beyond level of j1.

Venter ( Fig. 27 View Figure ). Sternogenital shield with a few lateral lines, ventrianal shield striated. Sternogenital shield with five pairs of setae and three pairs of distinguishable lyrifissures. Ventrianal shield 108, 107 (105–108) long, 100, 100 (98–102) wide at the level of ZV2 setae, 51, 53 (50–55) wide at the level of anus; with three pairs of preanal setae, JV1, JV2 and ZV2, one pair of pores and two 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 and of following lengths; genu 21, 22 (20–23), tibia 18, 19 (17–21), basitarsus 40, 40 (40–41). Chaetotactic formula of genu II: 1–2/1, 2/0–1; genu III: 1–2/1, 2/0–1. Length of leg I: 240, 245 (235–255), leg II: 190, 192 (185–198), leg III: 190, 192 (185–198), leg IV: 265, 269 (263–275).

Chelicera ( Fig. 28 View Figure ). Spermatodactyl with an elongated shaft 15, 15 (15–16) long terminating with a wide toe, 6, 5 (5–6) long.

Type Specimens. Holotype: Female (Acarol.lab/BCKV/8229/2016) (Registration number 4401/17 deposited in the NZC, Zoological Survey of India, Kolkata), collected from Clerodendrum  sp. ( Lamiaceae  ), at Pundibari: 26°52´43" N, 89°10´75" E, 47 m above mean sea level, Cooch Behar, West Bengal on 11 November 2016; 1 paratype female (Acarol.lab/BCKV/8215/2016) (Registration number 4402/17 deposited in the NZC, Zoological Survey of India, Kolkata), collected from Jute, Corchorus capsularis  ( Tiliaceae  ) with same location as holotype on 11 November 2016; 3 paratype females (Acarol.lab/BCKV/8215-8217/2016), collected from Jute, Corchorus capsularis  ( Tiliaceae  ), 4 paratype females (Acarol.lab/BCKV/8218-8221/2016), collected from Turmeric, Curcuma longa  ( Zingiberaceae  ), 4 paratype females (Acarol.lab/BCKV/8224-8227/2016), collected from Mung, Vigna radiata (Leguminosae)  , 1 paratype female (Acarol.lab/BCKV/8232/2016), collected from Rice, Oryza sativa  ( Poaceae  ), with same location and date as holotype; 2 paratype females (Acarol.lab/BCKV/8222-8223/2016), collected from Gamari, Gmelina arborea ( Verbenaceae  ) 1 paratype female (Acarol.lab/BCKV/8231/2016), collected from Bamboo, Bambusa indica  ( Poaceae  ), at Tufanganj: 26°33´05" N, 89°66´75" E, 70 m above mean sea level, Cooch Behar, West Bengal on 9 November 2016; 1 paratype male (Acarol.lab/BCKV/8221/2016) (Registration number 4403/17, deposited in the NZC, Zoological Survey of India, Kolkata) collected from Turmeric, Curcuma longa  ( Zingiberaceae  ) with same location as holotype female on 11 November 2016; 1 paratype male (Acarol.lab/BCKV/8228/2016), collected from Clerodendrum  sp. ( Lamiaceae  ), with same location as holotype female on 11 November 2016; 1 paratype male (Acarol.lab/BCKV/8230/2016) from Arjun, Terminalia arjuna  (Combreteaceae) at Tufanganj: 26°33´05" N, 89°66´75" E, 70 m above mean sea level, Cooch Behar, West Bengal on 9 November 2016.

Etymology. The specific name moraesi  is dedicated to Professor Gilberto J de Moraes, the renowned Brazilian Acarologist and beloved friend and philosopher of senior author.

Remarks. Scapulaseius moraesi  is close to Scapulaseius markwelli ( Schicha, 1979)  but differs from it by the shape of the tip of the macrosetae of the genu, which are knobbed in S. markwelli  and pointed in the former species. The former species is characterised by conspicuous lateral parallel lines along the dorsal shield, which are not present in the latter species. In the former species the setae J5, Z4 and Z5 are smooth while these are serrated in latter species. Scapulaseius moraesi  is also close to S. beelarong ( Schicha & Corpuz-Raros, 1992)  and S. officinaria ( Gupta, 1975)  but the former species widely differes from all the other closely related species. The setae j3 17, Z4 28 and Z5 78 of the former species are longer than the setae j3 13, Z4 19 and Z5 59 of S. beelarong  . The tips of setae j1, Z4 and macrosetae on legIV of latter species are rounded while the tips of these setae in former species are pointed. The seta Z5 of the former species is smooth and it is serrated in latter species. The former species also differs from the latter species by difference in posterior margin of sternal shield, shape of spermatheca, number of teeth in fixed digit of chelicerae and in shape of genital and ventrianal shield. The former species differs widely from S. officinaria ( Gupta, 1975)  by dorsal shield sclerotisation pattern which is reticulated in the latter species while in contrast to this the dorsal shield in former species having lateral parallel lines along margins. The former species also differs from S. officinaria ( Gupta, 1975)  by number of teeth in fixed digit which is nine in the former species and five in the latter species and also differs in shape of spermatheca, genital shield and length of macrosetae of leg IV.