Phytoseiid Mites (Atari: Phytoseiidae) from Sumatra with Description of a New Species
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Acta Arachnologica, 51(2): 125-133, December 20, 2002 Phytoseiid mites (Atari: Phytoseiidae) from Sumatra with description of a new species Shozo Ehara Hamasaka 2-15-7, Tottori, 680-0001 Japan Abstract - Twelve species of the mite family Phytoseiidae are reported from West Sumatra, Indonesia. Amblyseius (Amblyseius)sumatrensis sp. nov. is described and illustrated. Eleven named species are recorded for the first time in Sumatra. The male of Amblyseius (Neoseiulus) circellatus Wu & Li 1983, previously un- known, is described. Key words - Acari, fauna, Indonesia, new species, Phytoseiidae, Sumatra Mites of the family Phytoseiidae are ranked among the Amblyseius (Neoseiulus) longispinosus: Ehara 2002, p. 29, effective biological control agents for phytophagous mites fig. 1. on agricultural crops in many parts of the world. There is very little information about phytoseiid mites from Sumatra, The female of this species closely resembles that of A. Indonesia. Prior to the present work, Typhlodromus heveae (N.) womersleyi Schicha 1975 but differs in having seta 55 Oudemans 1930 and T. hevearum Oudemans 1930 were de- about one third as long as 54, as opposed to slightly shorter scribed from Medan, N. Sumatra on Hevea sp. Oomen than 54 in womersleyi. (1982) found that Amblyseius largoensis (Muma 1955) was Specimens examined. Padang: l?- & 1, ', 9-XII-1981,on cas- in association with the scarlet mite Brevipalpus phoenicis sava. (Geijskes 1939) on tea plants in Sumatra and Java. Distribution. China, Taiwan, Thailand, Malaysia, the This paper reports 12 species of phytoseiids, one of Philippines, Hawaii, Indonesia (Java; Sumatra, new record), which is described as new and 11 are first recorded from India, Pakistan, Papua New Guinea, Australia, New Sumatra. The collections on which this study is based were Zealand. made by Dr. Akio Takafuji, Kyoto University, during December of 1981 in West Sumatra. Amblyseius (Neoseiulus) circellatus Wu & Li 1983 The setal nomenclature follows that of Rowell et al. (Figs. 1-9) (1978). The generic and subgeneric concepts adopted in this paper generally follows those of Ehara & Amano (1998). Amblyseius (Amblyseius) circellatus Wu & Li 1983, p. 173, figs. All the measurements are given in micrometers, and those 13-17 (type loc.: Jianyang Xian, Dazhulan, Fujian Province, of the holotype of the new species are in parentheses follow- China; type habitat: Machilus thunbergii Sieb. & Zucc.). ing the mean. The holotype and part of the paratypes of the Amblyseius circellatus: Wu et al. 1997, p. 77, fig. 47. new species are deposited in the collection of the National Science Museum, Tokyo; the remainder of the paratypes Female. Body slender; dorsal shield reticulate on will be retained in the Museum Zoologicum Bogoriense, anterolateral area, with at least 6 pairs of solenostomes (Fig. Bogor, Indonesia. 1). Setae on dorsal shield: Z5 the longest, stout, barbed; re- maining setae much shorter, smooth. Setae r3 longer than Amblyseius (Neoseiulus) longispinosus (Evans 1952) R1, both setae smooth. Peritreme extending forward to level between z2 and z4 (between coxae II and III); posterior ex- Typhlodromus longispinosus Evans 1952, p. 413, figs. 1, 2 (type tension of peritrematal shield not observable. Sternal shield locality: Bogor, Java, Indonesia; type habitat: Manihot ill-defined, with 3 pairs of setae; metasternal platelets slen- utilissima Pohl). der (Fig. 2). Ventrianal shield much longer than wide, much Typhlodromus (Amblyseius) longispinosus: Chant 1959, p. 74, narrower than genital shield, with lateral margins concave; figs. 114, 115. 3 pairs of preanal setae and pair of large crescentic Amblyseius (Amblyseius) longispinosus: Ehara 1966, p. 21 (in solenostomes (Fig. 3). Two pairs of very slender metapodal part). platelets. Spermathecal cervix fundibular; the atrium Cydnodromus longispinosus: Muma 1967, p. 267. saccular with thick, heavily sclerotized walls (Figs. 4, 5). Amblyseius longispinosus: Schicha 1975, p. 103, figs. 10-17. Fixed digit of chelicera with 5 teeth, movable digit Neoseiulus longispinosus: Gupta 1978, p. 334; Beard 2001, p. unidentate (Fig. 6). Chaetotaxic formula: genu II, 2-210, 2/0- 85, fig. 6e-g. 1; genu III, 1-2/1, 2/0-1. Genua I-III without macrosetae. 126 S. Ehara Figs. 1-9. Amblyseius (Neoseiulus) circellatus. -1, dorsum of idiosoma (gravid ~); 2, sternal shield (~); 3, posterior ventral surface (~); 4, 5, spermatheca; 6, chelicera (~); 7, genu, tibia, and basitarsus of leg IV (~); 8, ventrianal shield (d'); 9, chelicera (a). Leg IV with 1 attenuate macroseta on genu (Fig. 7). 114; lengths of setae (n=10):jl 17.3±0.5,j3 22.1±0.3,j4 Measurements: length of idiosoma 291, width of idiosoma 17.1±0.2,j5 17.1±0.3,j6 15.4±0.4, J2 15.0±0.2, J5 4.4 135 (183 in a gravid ~); lengths of setae (mean±SE, n=10): ±0.1, z2 22.0±0.3, z4 23.1±0.3, z5 16.7±0.3, Z 1 16.6 jl 18.2±0.3, j3 20.6±0.2, j4 16.5±0.3, j5 15.6±0.2, j6 ±0.2, Z4 16.8±0.1, Z5 32.1±0.4, s4 29.4±0.2, S2 19.5 16.2±0.2, J215.9±0.5, J5 5.4±0.1, z2 21.7±0.3, z4 22.6 ±0.3, S4 16.4±0.2, S5 17.9±0.3, r3 21.8±0.3, R1 13.0 ±0.3, z5 15.7±0.3, Z1 16.6±0.3, Z4 17.1±0.2, Z5 38.4 ± 0.2, JV5 18.4± 0.4, macroseta on basitarsus IV 26.4 ± ±0.3, s4 29.1±0.3, S2 19.4±0.2, S4 16.9±0.3, S5 18.8 0.2. ± 0.3, r3 22.4 ± 0.2, R 1 14.2 ± 0.3, JV5 20.1 ± 0.4, Specimensexamined. Lubuk Mintrum: 7~ & 7d',7-XII-1981, macroseta on basitarsus IV 29.0 ± 0.6. on Bougainvilleasp. Male. Setae r3 and Rl on dorsal shield. Peritreme extend- Distribution.China; Indonesia(Sumatra), new record. ing anteriorly to level of z4. Ventrianal shield fused with Remarks. The present female specimensgenerally agree peritrematal shield, with 3 pairs of preanal setae; pair of with the descriptionsbased on Chinesematerials of this spe- crescentic solenostomes (Fig. 8). Fixed digit of chelicera cies (Wu & Li 1983;Wu et al. 1997),except for the slight with 4 teeth, the movable digit with a weak tooth; difference in the reticulationof dorsal shield. In addition, spermatodactyl with toe very narrow (Fig. 9). ventral seta ST4 of Sumatranfemales is located on each Measurements: length of idiosoma 217, width of idiosoma metasternalplatelet, whereas in Chinese specimensit was Acta Arachnologica, 51(2), December 2002 ©Arachnological Society of Japan Phytoseiid mites from Sumatra 127 illustrated by Wu et al. (1997) to exist on the interscutal membrane but was described to be present on the platelet in Amblyseius (Neoseiulus) asiaticus (Evans 1953) their text. (Fig. 13) The male of A. (N.) circellatus, previously unknown, has been described. An Indian species, A, kalimpongensis Gupta Typhlodromus asiaticus Evans 1953, p. 461, figs. 7, 8 (type loc.: 1969 might be a senior synonym of A. (A.) circellatus. Java, Indonesia; no data about type habitat). Typhlodromus (Amblyseius) asiaticus: Chant 1959, p. 80, figs. Amblyseius (Neoseiulus) makuwa Ehara 1972 140, 141. Amblyseius (Amblyseius) asiaticus: Ehara 1966, p. 20; Ehara & (Fig. 10) Bhandhufalck 1977, p. 58, figs. 50-55. Amblyseius (Amblyseius) makuwa Ehara 1972, p. 154, figs. 70- Amblyseius asiaticus: Schicha 1987, p. 94, pl. 4; Schicha & 74 (type loc.: Kita-usa, Usa, Oita Pref., Kyushu; type habitat: Corpuz-Raros 1992, p. 60, pl. 45; Wu et al. 1997, p. 91, fig. Cucumis melo L, var. makuwa Makino); Ehara & Hamaoka 61. 1980, p. 6, fig. 8; Ryu 1993, p. 109, figs. 77-81; Ehara et al. Amblyseius linearis Corpuz & Rimando 1966, p. 125, fig. 2 1994, p. 124. (type loc.: Gamu, Isabela, the Philippines; type habitat: Amblyseius makuwa: Chen et al. 1984, p. 335, fig. 14 (32); Wu Achyranthes aspera L.). Synonymy by Schicha & Corpuz- Raros (1992). et al. 1997, p. 99, fig. 69. Amblyseius (Neoseiulus) makuwa: Ehara & Amano 1998, p. 37. Amblyseius (Amblyseius) siaki Ehara & Lee 1971, p. 64, figs. 9- 12 (type loc.: Shek Kiu Tau, N. T., Hong Kong; type habitat: A brown mite. The spermatheca of this species is distinc- wild chrysanthemum). Synonymy by Ehara & Bhandhufalck tive in that the cervix is fundibular, very large and slender, (1977). and gradually narrows proximally to connect with the ellip- The female of A. (N.) asiaticus is characterized by having tical, basally incised atrium (Fig. 10). Leg IV is also distinc- seta R1 present on a lobe of dorsal shield. This distinctive tive in having 2 macrosetae on basitarsus and 1 macroseta character was described and figured by Ehara & on genu. Incidentally, genua I-III are deficient in Bhandhufalck (1977). The spermathecal cervix is tubular, macrosetae. long and narrow, often coiled, and narrower than the atrium Specimenexamined. Padang: 1~, 2-XII-1981,on a legumi- nous weed. which is incorporated into the base of the cervix (Fig. 13). Distribution. Japan (Honshu, Kyushu), Korea, China, The posterior margin of the sternal shield is nearly straight. Taiwan; Indonesia (Sumatra), new record. One macroseta is present on genua I-IV; those on I and II are often scarcely discernible. Amblyseius (Neoseiulus) okinawanus Ehara 1967 Specimens examined. Padang: 2k-, 1-XII-1981, on Stachytarpheta cayennensis(Rich.) J. Vahl; 2~, 1-XII-1981,on (Figs. 11, 12) lantana; 8~ & 3d', 13-XII-1981, on a polygonaceous weed. Lubuk Mintrum: 10~ & 4d', 7-XII-1981,on a leguminousweed; Amblyseius (Amblyseius) okinawanus Ehara 1967, p. 72, figs. 3~ & 4, ', 7-XII-1981,on a melastomataceousplant. Ulu Gadut: 17-24 (type loc.: Tomigusuku, Okinawa Island; type habitat: 5s- & 2, ', 7-XII-1981,on a leguminousweed.