Descriptions of two new species of Mixosperchon Viets, a newly recorded subgenus of water mites, from China (Acari, Hydrachnellae, Sperchontidae)

2010·0.91 MB·

Acta Zootaxonomica Sinica, 35 ( 3): 435(cid:1)439 ( July, 2010) ISSN 1000(cid:1)0739
动物分类学报
DESCRIPTIONS OF TWO NEW SPECIES OFMIXOSPERCHON VIETS, A
NEWLY RECORDED SUBGENUS OFWATERM ITES, FROM CH INA
(ACARI, HYDRACHNELLAE, SPERCHONTIDAE)
ZHANGXu1, 2, JIN Dao(cid:1)Chao1* , GUO Jian(cid:1)Jun1, YITian(cid:1)Ci1
1. InstituteofEntomology, GuizhouUniversity; TheProvincialKeyLaboratoryofAgriculturalPestManagement inMountainousRegion, Guiyang(cid:1) 550025, China
2. AnhuiKeyLaboratoryofPlantRescourcesandBiology, HuaibeiNormalUniversity, Huaibei(cid:1) 235000, China
Abstract(cid:1) Two new speciesSperchon (Mixosperchon) curvipalpis Zhanget Jin, sp. nov. andSperchon (Mixosperchon) turfanensis
Zhanget Jin, sp. nov. are described in the presentpaper. This is the first record of the subgenusMixosperchon Viets, 1926
from China.
Keywords(cid:1) Watermites, Sperchontidae, Mixosperchon, new species, China.
(cid:1) (cid:1) The genusSperchon Kramer the family, 1877 in Typespecies: SperchonpapillosusViers, 1926.
the subfamily Sperchontinae Thor, 1900 of Median eye absen;t no gland opening ( E4)
Sperchontidae Thor, 1900 was divided into five presenton Ep∀; P(cid:1)∀ eitherwith a ventral projection
subgenera: Sperchon Kramer, 1877; Mixosperchon Viets, or with ventral setae; peg(cid:1)like setae on P(cid:1)! not
1926; Hispidosperchon Thor, 1901; Acadiosperchon greatly enlarged and notlocated close together (Cook,
Habeeb, 1959; and Palpisperchon Lundblad, 1941 1974).
(Cook, 1974). There were only two subgenera,
Sperchon (M ixosperchon ) curvipalpis Zhang et Jin,
Hispidosperchon Thor, 1901 andSperchon Kramer, 1877
sp. nov. (Figs. 1(cid:1)11)
previously reported from China (Guo and Jin, 2005;
Guo and Jin, 2006; Jin, 1997; Uchida, 1941; Zhang Male. Idiosoma ova,l 690 in length, 624 in
et al., 2007). A newly recorded subgenusMixosperchon width. Cuticle light yellowish and softwith very fine
Viets, 1926 and two new species are identified from spinules arranged somewhat in hexagonal pattern
watermite collections in the Institute ofEntomology, (Fig. 4). A1 thick and plumose (Fig. 3), O2 on
Guizhou University. All type specmi ens of the new large platelets. Chitinous platelets and glandular
species are deposited in the Institute of Entomology, platelets on both dorsum and venter showed in Fig. 1
Guizhou University, China. The measurements are and Fig. 2. Surface of epmi era reticulated. AEG 174
given in (cid:1)m. Theabbreviations used in thedescription in length, close to each other but not fused and
are as follows. A1, A2: antennalglandularia 1 and2; apodeme weakly developed. PEG 228 in length,
AEG: anterior epmi era group (Ep(cid:2) + Ep ); Ep(cid:2)(cid:1) widely separated. E4 absent from Ep∀. Distance
Ep!: Epmi eral(cid:2) (cid:1)!; D1(cid:1)D4: dorsoglandularia 1(cid:1)4; between anterior end ofEp(cid:2) and posterior end ofEp
E1(cid:1)E4: epmi eroglandularia 1(cid:1)4; L1(cid:1)L4: ! 375. External genital organ lying between PEG;
lateroglandularia l(cid:1)4; O1, O2: ocularia land2; PEG: genital valves not covering the genital acetabula;
posterior epmi era group (Ep∀+ Ep!); P(cid:1)(cid:2) (cid:1)P(cid:1)#: posterior acetabula more or less rounded. Length of
palpal segments 1(cid:1)5; V1(cid:1)V4: venteroglandularia 1(cid:1)4; genital valves 140, width 144. V1 without
(cid:2) (cid:1)L(cid:1)1(cid:1)(cid:2) (cid:1)L(cid:1)6: the first leg segments 1(cid:1)6; (cid:1)L(cid:1)1(cid:1) (cid:1) accompanying glandularia but with very small
L(cid:1)6: the second leg segments1(cid:1)6; ∀(cid:1)L(cid:1)1(cid:1)∀(cid:1)L(cid:1)6: the sclerites. The venter with a single ventral platelet
third leg segments 1(cid:1)6; !(cid:1)L(cid:1)1(cid:1)!(cid:1)L(cid:1)6: the fourth leg between genitalfield andV1, and further threepairsof
segments1(cid:1)6. ventralia besides the platelet and excretory pore.
Family SperchontidaeThor, 1900 Excretory pore smooth. Dorsal lengths of palpal
Subfamily SperchontinaeThor, 1900 segments: P(cid:1)(cid:2), 22; P(cid:1) , 90; P(cid:1)∀, 118; P(cid:1)!,
GenusSperchon Kramer, 1877 155; P(cid:1)#, 27. P(cid:1) with a long ventrodistal
projection bearing two long setae; about twelve small
Subgenus M ixosperchon Viets, 1926 (cid:1) Newly
setaeon lateraland dorsal side ofP(cid:1) , three of them
recorded from China
feathered. The dorsal side ofP(cid:1)∀ incurved; P(cid:1)∀ with
MixosperchonViets, 1926. Zool. Anz., 69: 190.
The studywas supported byTheNationalNaturalScienceFoundation ofChina(30570217, 30840021) andFunds fortheLiupanshan InsectResource
(LIR0810).
* Corresponding author, E(cid:1)mai:l dcjin@ gzu. edu. cn
Received 23Dec. 2009, accepted 1 June2010.
435
436 Acta Zootaxonomica Sinica动物分类学报 Vo.l 35(cid:1) No. 3
Figs. 1(cid:1)9. Sperchon (Mixosperchon) curvipalpis Zhang et Jin, sp. nov., male. 1. Dorsalview. 2. Ventral view.
3. A1. 4. Decorationsof cuticle. 5. !(cid:1)L(cid:1)1(cid:1)6. 6. Dorsalseta of!(cid:1)L(cid:1)5. 7. Capitulum. 8. Chelicera. 9. Palp.
eleven heavy setae, one ofwhichmore or less ventral anterior end ofEp(cid:2) and posterior end ofEp! 600.
in position, others on lateral and dorsal side and five Gential field 219 in length, 190 in width. Dorsal
of them feathered. Ventralmargin ofP(cid:1)! with 2 peg(cid:1) lengths of palpal segments: P(cid:1)(cid:2), 31; P(cid:1) , 132; P(cid:1)
like setae, ofwhich proxmi al one slightly longer and ∀, 163; P(cid:1)!, 211; P(cid:1)#, 37. Gnathosoma length
thicker than distal one, and two small setae among 225; chelicera total length 225, basal segment length
them. Gnathosoma with long rostrum, length 175; 150, claw length 75, ratio of basal segment/claw
chelicera total length 179, basal segment length 116, length 2. Dorsal lengths of the first leg: (cid:2) (cid:1)L(cid:1)1, 75;
claw length 63, ratio of basal segment/claw length (cid:2)(cid:1)L(cid:1)2, 88; (cid:2) (cid:1)L(cid:1)3, 125; (cid:2)(cid:1)L(cid:1)4, 213; (cid:2) (cid:1)L(cid:1)5, 187;
1(cid:2)8. Dorsal lengths ofthe firstleg: (cid:2) (cid:1)L(cid:1)1, 50; (cid:2)(cid:1)L(cid:1) (cid:2)(cid:1)L(cid:1)6, 163. Dorsal lengthsofthe fourth leg: !(cid:1)L(cid:1)1,
2, 50; (cid:2) (cid:1)L(cid:1)3, 75; (cid:2) (cid:1)L(cid:1)4, 150; (cid:2)(cid:1)L(cid:1)5, 138; (cid:2)(cid:1)L(cid:1) 143; !(cid:1)L(cid:1)2, 151; !(cid:1)L(cid:1)3, 161; !(cid:1)L(cid:1)4, 317; !(cid:1)L(cid:1)
6, 125. Dorsal lengths ofthe fourth leg: !(cid:1)L(cid:1)1, 112; 5, 276; !(cid:1)L(cid:1)6, 232. Third(cid:1)fifth segments of leg(cid:2) (cid:1)
!(cid:1)L(cid:1)2, 85; !(cid:1)L(cid:1)3, 106; !(cid:1)L(cid:1)4, 211; !(cid:1)L(cid:1)5, 183; ! with longplumose setae in longitudinal rows.
!(cid:1)L(cid:1)6, 167. Third(cid:1)fifth segments of leg I(cid:1)IV with Remarks. The new species is smi ilar toSperchon
longitudinal rows ofrather long plumose setae. (Mixosperchon ) neotropicus Cook, 1980 from Mexico
Female. Smi ilar to male except in morphological (Cook, 1980) especially in the shape of the idiosoma
characters of the genital field and the size of dorsalia and one heavy setae on the ventral side of the P(cid:1)∀.
and ventralia. Length ofbody1225, width969. AEG However, they can be easily distinguished by follows:
250 in length, PEG 328 in length. Distance between The incurvated dorsal of P(cid:1)∀ is unique in the new
July, 2010 张(cid:1) 旭等: 中国刺触螨科一新纪录亚属及两新种记述 (蜱螨亚纲, 水螨群, 刺触螨科) 437
Figs. 10(cid:1)11. Sperchon (Mixosperchon) curvipalpis Zhanget Jin, sp. nov., female. 10. Dorsalview, 11. Ventralview.
species differentiated from all other species in this P(cid:1) , 151; P(cid:1)∀, 175; P(cid:1)!, 221; P(cid:1)#, 40. P(cid:1)
subgenus; A1 is plumose in the new species but with a long ventrodistal projection bearing one long
smooth inS. (M. ) neotropicus Cook, 1980. and one small setae; about eleven small setae on
Holotype male, W ild(cid:1)Lotus Valley ( 35∃32%N, laterlal and dorsal side of P(cid:1) , none of them
106∃24%E; al.t 1 826m), Jiyuan City, Ningxia Hui feathered. P(cid:1)∀ with twelve none(cid:1)feathered heavy
AutomonousRegion, 26 July 2009, leg. YITian(cid:1)C.i setae, two ofwhich more or less ventral in position,
Paratypes two females, the samedata as the holotype. others on lateral and dorsal side of P(cid:1)∀. P(cid:1)! with
The holotype and one femaleweredissected and slide(cid:1) two peg(cid:1)like setae on the ventral side, one ofwhich
mounted. aml ostatventralmiddle of the segment and with two
Etymology. The species is named according to common hypobasal setae, another one near to ventral
the incurvated dorsal side ofP(cid:1)∀. distal end of the segmen.t Gnathosoma with long
Sperchon (M ixosperchon ) turfanensis Zhang et Jin, rostrum, length 220; chelicera total length 225, basal
sp. nov. (Figs. 12(cid:1)19) segment length 150, claw length 75, ration basal
segment/claw length 2. Dorsal lengths of the first leg:
Female. Idiosoma ova,l 983 in length, 713 in
(cid:2)(cid:1)L(cid:1)1, 75; (cid:2)(cid:1)L(cid:1)2, 88; (cid:2)(cid:1)L(cid:1)3, 113; (cid:2) (cid:1)L(cid:1)4, 213;
width. Cuticle light yellowish, soft and covered with
(cid:2)(cid:1)L(cid:1)5, 200; (cid:2)(cid:1)L(cid:1)6, 175. Dorsal lengths of the
very fine spinules arranged somewhat in hexagonal
fourth leg: !(cid:1)L(cid:1)1, 157; !(cid:1)L(cid:1)2, 147; !(cid:1)L(cid:1)3, 176;
patten (Fig. 14). A1 shortand smooth, O2 on large
!(cid:1)L(cid:1)4, 340; !(cid:1)L(cid:1)5, 334; !(cid:1)L(cid:1)6, 256. Third(cid:1)fifth
platelets. Chitinousplatelets and glandular platelets on
segments of leg(cid:2) (cid:1)! with rather longplumose setae in
both dorsum and venter showed in Fig. 12 and Fig.
longitudinal rows.
13. Surface of epmi era reticulated. AEG 249 in
Remarks. The new species closely resembles
length, close but not fused to each other, and
Sperchon (Mixosperchon ) mexicanus Cook, 1980 from
apodemewell developed. PEG 315 in length, widely
Mexico (Cook, 1980), butcan bedistinguished from
separated. E4 absentfrom theEp∀. Distancebetween
the latter by the following characters: the new species
anterior end ofEp(cid:2) and posterior end ofEp! 575.
with two heavy setae, whileS. (M. ) mexicanus with
Genital field 204 in length, 186 in width, typically
only one heavy setae on theventral sideofP(cid:1)∀. The
with three pairs of genital acetabula. V1 without
postgenitalplatelet in the new species oblong, while it
accompanying glandularia but with very small
more or less rounded in the latter. The setae on the
sclerites. The venter with a single oblong platelet
dorsalof third(cid:1)fifth segments of leg! are pectinate in
posterior to genital field and between V3, a pair of
the new species butnot in the latter.
small rounded ventralia posterior toV3, and two pairs
Holotype female, Sanbao Village, Turfan City,
of ventralia between V1 and V2. Excretory pore
XinjiangUygurAutonomousRegion, 19 Aug. 1997,
smooth. Dorsal lengths ofpalpal segments: P(cid:1)(cid:2), 26;
438 Acta Zootaxonomica Sinica动物分类学报 Vo.l 35(cid:1) No. 3
Figs. 12(cid:1)19. Sperchon (Mixosperchon) turfanensis Zhanget Jin, sp. nov., female. 12. Dorsalview. 13. Ventralview.
14. Decorationsof cuticle. 15. !(cid:1)l(cid:1)1(cid:1)6. 16. Dorsalseta of!(cid:1)L(cid:1)5. 17. Chelicera. 18. Capitulum. 19. Palp.
leg. JIN Dao(cid:1)Chao. The holotype was dissected and Cook, D. R. 1980. Studies on neotropicalwatermites. Memoirsof the
slide(cid:1)mounted. AmericanEntomologicalInstitute, 31: 1(cid:1)645.
Guo, J(cid:1)J and Jin, D(cid:1)C 2005. Prostigmata: Sperchonidae:
Etymology. The species is named after the
Torrenticolidae. In: Yang, M(cid:1)F and Jin, D(cid:1)C ( eds. ), Insects
Turfan City (XinjiangUygur AutonomousRegion), from Dashahe Nature Reserve of Guizhou. Guizhou Peoples
where the type specmi enwas collected. PublishingHouse, Guiyang. pp. 552(cid:1)556. [郭建军, 金道超,
2005. 前气门目: 刺触螨科: 急流水螨科. 杨茂发, 金道超 (主
REFERENCES 编), 大沙河景观昆虫. 贵阳: 贵州人民出版社. 552~ 556]
Guo, J(cid:1)J and Jin, D(cid:1)C 2006. Sperchonidae, Lebertidae and
Cook, D. R. 1974. Watermite genera and subgenera. Memoirsof the Torrenticolidae. In: L,i Z(cid:1)Z and Jin, D(cid:1)C (eds. ), Insects from
AmericanEntomologicalInstitute, 21: 1(cid:1)1858. Fanjingshan Landscape. Guizhou Science and Technology
July, 2010 张(cid:1) 旭等: 中国刺触螨科一新纪录亚属及两新种记述 (蜱螨亚纲, 水螨群, 刺触螨科) 439
PublishingHouse, Guiyang. pp. 702(cid:1)708. [郭建军, 金道超, Soc. Japan, 11 (15): 117(cid:1)119.
2006. 刺触螨科, 腺水螨科和急流水螨科. 李子忠, 金道超 (主 Zhang, X, Jin, D(cid:1)C andGuo, J(cid:1)J2007. Sperchonidae. In: L,i Z(cid:1)Z,
编), 梵净山景观昆虫. 贵阳: 贵州科技出版社. 702~ 708] Yang, M(cid:1)F and Jin, D(cid:1)C ( eds. ), Insects from Leigongshan
Jin, D(cid:1)C 1997. Hydrachnellae(cid:1)Morphology, Systematics, a Primary Landscape. Guizhou Science andTechnology Publishing House,
StudyofChineseFauna. Guizhou Science and Technique Publish Guiyang. pp. 659(cid:1)660. [张(cid:1) 旭, 金道超, 郭建军, 2007. 刺触
House, Guiyang. 356pp. [金道超, 1997. 水螨分类理论和中国 螨科. 李子忠, 杨茂发, 金道超 (主编), 雷公山景观昆虫. 贵
区系初志. 贵阳: 贵州科技出版社. 356] 阳: 贵州科技出版社. 659(cid:1)660]
Uchida, T. 1941. Watermites fromManchoukuo. Bull. Biogeograph.
中国刺触螨科一新纪录亚属及两新种记述 (蜱螨亚纲, 水螨群, 刺触螨科 )
张(cid:1) 旭1, 2(cid:1) 金道超1* (cid:1) 郭建军1(cid:1) 乙天慈1
1. 贵州大学昆虫研究所, 贵州山地农业病虫害重点实验室(cid:1) 贵阳(cid:1) 550025
2. 淮北师范大学, 资源植物生物学安徽省重点实验室(cid:1) 淮北(cid:1) 235000
摘(cid:1) 要(cid:1) 记述了采自宁夏回族自治区泾源县野荷谷和新疆维 词源: 以 P(cid:1)∀背面凹陷特征命名。
吾尔族自治区吐鲁番市三堡乡的中国刺触螨科一新纪录亚
吐鲁番刺触螨, 新种 Sperchon (M ixosperchon ) turfanensis
属: 杂刺触螨亚属M ixosperchon Viets, 1926及两新种: 凹须刺
Zhanget Jin, sp. nov. (图 12~ 19)
触螨 Sperchon (M ixosperchon ) curvipalpis Zhang et Jin, sp. nov. 新种 与 分 布于 墨 西 哥 的 墨西 哥 刺 触 螨 Sperchon
和吐鲁番刺触螨 Sperchon (M ixosperchon) turfanensis Zhanget Jin, (Mixosperchon) mexicanus Cook, 1980近似, 区别在于: 新种 P(cid:1)
sp. nov.。模式标本保存于贵州大学昆虫研究所。
∀腹面生有 2根粗刚毛, 而S. (M. ) mexicanus的 P(cid:1)∀腹面生
凹须刺 触螨, 新种 Sperchon (M ixosperchon ) curvipalpis 1根粗刚毛; 新种生殖域后方、V3之间的骨片为长条形, 而
Zhanget Jin, sp. nov. (图 1~ 11) 其在S. (M. )mexicanusCook, 1980为圆形; 新种足上刚毛羽
新 种与 分 布 于 墨 西哥 的 新 热 带 刺触 螨 Sperchon 状, 而 S. (M. ) mexicanus Cook, 1980足上刚毛光滑, 非
(M ixosperchon) neotropicus Cook, 1980近似, 区别在于: 新种 羽状。
A1为短小, 呈枝状, 而 S. (M. ) neotropicus的 A1光滑; 新种 正模 ∋, 新疆维吾尔族自治区吐鲁番市三堡乡, 1997(cid:1)
的 P(cid:1)∀背面凹陷, 此特征显著区别于本亚属的其它物种。 08(cid:1)19, 金道超采。
正模 & , 副模 2∋ ∋, 宁夏回族自治区泾源县野荷谷, 种名词源: 以模式产地命名
2009(cid:1)07(cid:1)26, 乙天慈采。
关键词(cid:1) 水螨群, 刺触螨科, 杂刺触螨亚属, 新种.
中图分类号(cid:1) Q959(cid:2)226
* 通讯作者.