景昊, 霍科科
(陜西理工大學(xué)生物科學(xué)與工程學(xué)院,陜西漢中723001)
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西藏毛蚜蠅雄性記述
景昊, 霍科科*
(陜西理工大學(xué)生物科學(xué)與工程學(xué)院,陜西漢中723001)
本文記述了西藏毛蚜蠅DasysyrphusxizangensisPan, WangetHuo, 2010雄性特征。雄性體色及身體大小類似雌性,但雌性離眼,雄性合眼。該種模式標(biāo)本保存于陜西理工大學(xué)動(dòng)植物標(biāo)本館。
食蚜蠅科;西藏毛蚜蠅;雄性;新描述
潘朝暉等(2010)已對(duì)西藏毛蚜蠅DasysyrphusxizangensisPan, WangetHuo, 2010雌性進(jìn)行了描述。我們于2015年8月在山西省蘆芽山自然保護(hù)區(qū)進(jìn)行食蚜蠅標(biāo)本采集時(shí)獲得該種的雄性和雌性標(biāo)本,并對(duì)該種雄性進(jìn)行了補(bǔ)充描述,內(nèi)容如下。文中形態(tài)學(xué)術(shù)語(yǔ)采用霍科科等(2007)。
西藏毛蚜蠅DasysyrphusxizangensisPan, WangetHuo, 2010
雄性(圖版Ⅰ:1):復(fù)眼密被黃褐色毛。頭頂三角(圖版Ⅰ:2)黑色,覆黃色薄粉,毛黑色。額(圖版Ⅰ:2)黑色,被黑毛,基部覆灰白色粉。后頭部覆淺黃白色粉,蓋住底色;被毛黃至黃白色。顏(圖版Ⅰ:3,4)黃色,具黑色中條,幾伸達(dá)觸角基部,復(fù)眼下方暗褐色,口緣黑色;顏毛主要黑色。觸角全黑色,第三節(jié)短卵形;芒黑色。
中胸背板黑色,具光澤,兩側(cè)略呈暗褐色;基部中央具灰白色粉被條紋,伸達(dá)背板中部之后,兩側(cè)橫溝之前具黃粉條紋,肩胛覆黃粉;背板毛黃色,長(zhǎng)。小盾片黃色,毛大部分黑色,周邊具黃毛;盾下緣纓,黃色,長(zhǎng)。中胸下前側(cè)片后端背、腹毛斑寬地分離,后端狹地相連;中胸上前側(cè)片前低平部、上后側(cè)片中、后部及基側(cè)片裸。后胸腹板裸。
足棕黃色,各足基節(jié)、轉(zhuǎn)節(jié)、前足腿節(jié)基部近2/3、中足腿節(jié)基半部、后足腿節(jié)基部4/5暗黑色;足毛主要黃色,缺后足基節(jié)后中端角毛簇。
翅透明,翅痣暗褐色;翅面具微毛,無(wú)裸區(qū)。腋瓣及平衡棒黃色。
腹部亮黑色,具3對(duì)黃斑;第二背板黃斑略斜置于背板中部,內(nèi)端近背板前緣,前緣幾與背板前緣平行、后緣略斜;第三、四背板黃斑位于背板基半部,內(nèi)端達(dá)背板前緣,后方呈鈍角向外彎曲,變狹,斑外端呈三角形膨大;各背板黃斑均不達(dá)背板側(cè)緣,第四、五背板后緣具狹的黃邊。背板被毛主要黃色,背板后緣具黑毛。腹面暗褐色,腹板的前、后緣色較淺。
雄性尾器(圖版Ⅱ:5~10):骨化強(qiáng)烈,黑褐色。第九背板近長(zhǎng)方形,長(zhǎng)大于高,背緣明顯短于腹緣。尾須暗黃褐色,狹長(zhǎng),被黃白色長(zhǎng)毛。背針突側(cè)面觀近三角形,后腹角狹,外側(cè)面被黑色粗毛,內(nèi)側(cè)面具黑色短刺;后面觀中央凹陷,兩側(cè)緣隆起,近外側(cè)具黃白色長(zhǎng)毛。第九腹板(圖Ⅱ:7)側(cè)臂長(zhǎng)于舌狀突。上葉(圖版Ⅱ:8)不規(guī)則角狀,后背角尖,指向前背方。陽(yáng)莖(圖版Ⅱ:10)黃褐色,陽(yáng)莖端近中部明顯膨大;陽(yáng)莖基近圓筒形,陽(yáng)莖表皮內(nèi)突較短,近黑色。
圖版Ⅰ 西藏毛蚜蠅Dasysyrphus xizangensis Pan, Wang et Huo, 2010 Plate Ⅰ Dasysyrphus xizangensis Pan, Wang et Huo, 2010
1. 雄性背面觀, 2. 雄性頭部背面觀, 3. 雄性頭部側(cè)面觀, 4. 雄性頭部正面觀。
1. male habitus, dorsal view, 2. head, male, dorsal view, 3. head, male, lateral view, 4. head, male, anterior view.
圖版Ⅱ 西藏毛蚜蠅Dasysyrphus xizangensis Pan, Wang et Huo, 2010
5.雄性尾器側(cè)面, 6. 雄性尾器腹面, 7. 第九腹板及其附器, 8. 上葉, 9. 第九背板及其附器, 10. 陽(yáng)莖。
5. male terminalia, lateral view, 6. male terminalia, ventral view, 7. hypandrium and its appendages, 8. superior lobe, 9. epandrium and its appendages, 10. aedeagus.
體長(zhǎng)8~11 mm,翅長(zhǎng)7~10 mm。
采集地:山西省蘆芽山自然保護(hù)區(qū)。
海拔:2 739 m。
地理位置:112°05′E,38°50′N。
觀察標(biāo)本:1♀,2015-VIII-9,山西省寧武縣蘆芽山;1♂1♀,2015-VIII-10,山西省寧武縣蘆芽山;2♂2♀,2015-VIII-11,山西省寧武縣蘆芽山;1♀,2015-VIII-14,山西省寧武縣蘆芽山;1♂,2015-VIII-15,山西省寧武縣蘆芽山。
在標(biāo)本采集過(guò)程發(fā)現(xiàn)只有當(dāng)海拔上升到一定高度才能采集到西藏毛蚜蠅,且模式標(biāo)本采集地也是位于海拔2 700 m的地區(qū)。
霍科科, 任國(guó)棟, 鄭哲民. 2007. 秦巴山區(qū)蚜蠅區(qū)系分類(昆蟲綱: 雙翅目)[M]. 北京: 中國(guó)農(nóng)業(yè)科學(xué)技術(shù)出版社.
潘朝暉, 王保海, 霍科科. 2010. 中國(guó)毛蚜蠅屬1新種記述(雙翅目: 食蚜蠅科)[J]. 東北林業(yè)大學(xué)學(xué)報(bào), 38(11): 133-134.
Hippa H. 1968. A generic revision of the genusSyrphusand allied genera (Diptera, Syrphidae) in the Palearctic region, with description of the male genitalia[J]. Acta Entomologica Fennica, 25: 7-94.
Description of MaleDasysyrphusxizangensisPan, WangetHuo, 2010
JING Hao, HUO Keke*
(School of Bioscience and Engineering, Shaanxi Sci-Tech University, Hanzhong, Shaanxi Province 723001, China)
Dasysyrphusxizangensiswas described by Panetal. in 2010 from Xizang Autonomous Region with the male unknown. The specimens of male and female were collected from Shanxi province in 2015. This paper supplemented the descriptions and illustrations of the male. The examined specimens were deposited at Shaanxi Sci-Tech University, Hanzhong city, Shaanxi province, China. The appearanceD.xizangensisPan, WangetHuo, 2010 was similar toDasysyrphuspostclaviger(tysetMoucha, 1962), however, the former had dark-brown stigma and yellow hind tarsi, while the latter had yellow stigma and black hind tarsi. The eyes ofD.xizangensiswere covered with densely yellowish brown hairs. Face yellow with black median stripe not extending to base of antennae. Mesonotum was covered with yellow long pile, shining black with dark gray median stripe extending posteriorly almost to the end of mesonotum. Scutellum yellow, mostly black pilose. Legs were brownish yellow, but dark black on all of coxae, trochanters and basal portions of femora. Wing stigma was blackish brown. Abdomen shining black, 3 pairs of yellow spots on abdomen were not extended to margins. The first pair of spots were obliquely located in the middle of tergite 2, with inner ends nearly approaching anterior margin of the tergite. The second and third pairs of spots were located in basal half of tergites and with expanded outer ends triangularly. Tergites 4 and 5 were narrowly yellow on posterior margins. Male terminalia was similar to that ofD.postclaviger, but differed from the latter by distal portion of aedeagus inflated medially (compared with figures 281~284 of Hippa, 1968, P. 73).
Syrphidae;DasysyrphusxizangensisPan, WangetHuo, 2010; male; new description
2016-08-01 接受日期:2016-09-26
陜西省資源重點(diǎn)實(shí)驗(yàn)室科研項(xiàng)目(14JS017)
景昊, 男, 碩士研究生, 主要從事動(dòng)物生物多樣性研究, E-mail:349909335@qq.com
*通信作者Corresponding author, E-mail:huokk@163.com
10.11984/j.issn.1000-7083.20160208
Q959.229.9
A
1000-7083(2016)06-0910-03