摘要
本文报道了在云南新发现的 4种古蚖:热海古蚖Eosentomonrehaiense、腾冲古蚖E tengchongense、大孔古蚖E megastigma和古永古蚖E guyongense。它们的腹板Ⅳ～Ⅶ节毛序都是 6 /9型的。
Four new species of Eosentomon are described in this paper,collected in 1996 from Yunnan,China.Theyare E rehaiense,E tengchongense,E megastigma and E guyongense .These four species are all with 6/9 pattern of chaetotaxy on abdominal sternites Ⅳ-Ⅶ.All the specimens are presserved in Shanghai Institute of Entomology,Academia Sinica. 1 Eosentomon rehaiense sp nov (Fig 1:A-E) Body length 886?μm.Head 87×91?μm.Pseudoculus oval 10?μm long,PR=8 6.Foretarsus 74?μm long and claw 18?μm,TR=4 1;EU=0 9.Dorsal sensilla t 1 claviform,BS=0 9; t 2 thin and long, t 3 clubform.Exterior sensilla a and c about the same length, b willow leaf like,longer than a and c ; d clubform, e and g spatulated, f 1 willow leaf like, f 2 very short.Interior sensilla a ' thin and long,its apex surpass the base of b ' 2, b ' 1 absent, b ' 2 clubform, c ' very short.The diameter of the spiracles 9?μm.Chaetotaxy as shown in Table 1. Holotype:1♂,Rehai,Tengchong,Yunnan,27-Ⅳ-1996,collected by Xiao Ning nian. Remarks:The present new species,its pseudoculus,the chaetotaxy of tergites Ⅴ-Ⅶ,foretarsus sensilla t 2 and b can be easily distinguished from E belli Yin 1982 and E dian Yin,Xie and Imadaté,1995.The species is named from the site of Rehai spring. 2 E tenghchongense sp nov (Fig 1:F-K) Body length 710-820?μm.Head (93-103)×(78-87)?μm.Pseudoculus oval 9-10?μm long,PR=10-11.Foretarsus 72-74?μm long and claw 13-17?μm,TR=4 5-5 4;EU=0 9-1 0.Dorsal sensilla t 1 claviform,BS=0 9-1 0; t 2 willow leaf like, t 3 clubform.Exterior sensilla a longer than c , b thin and long, d broad long,its tip surpass the base of t 3, e and g spatulated, f 1clubform, f 2veryshort.Inte rior sensilla a 'clubform,its tip surpass the base of t 2, b ' 2willow leaflike, b ' 1and c 'absent.Thedia meter of the spiracles 7-9?μm.Chaetotaxy as shown in Table 2. Syntype:2♀♀,Rehai,Tengchong,Yunnan,27-Ⅳ-1996,collected by Xiao Ning nian.1♂,Menglian,Tengchong,Yunnan,15-Ⅹ-1996,co llected by Xiao Ning nian et al . Remarks:The pseudoculus,the chaetotaxy of tergites Ⅴ-Ⅶ and foretarsus sensilla c 'absent of the present new species can be easily distinguished from E belli and E dian .The species is named from Tengchong country,where is found this new proturan. 3 E megastigma sp nov (Fig 2:A-E) Body length 920?μm.Head 113×97?μm.Pseudoculus ovoid 16?μm long,PR=7 3.Foretarsus 85?μm long and claw 18?μm,TR=4 7;EU=1 0.Dorsal sensilla t 1 claviform,BS=1 0; t 2 willow leaf like, t 3 thin and long.Exterior sensilla a and c about the same length, b thin and long, d thin and long, e and g spa tulated, f 1 clubform, f 2 very short.Interior sensilla a 'thin and long,its tip can arrive the base of b ' 2, b ' 1 absent, b ' 2 willow leaf like, c 'absent.The dia meter of the spiracles 12 4?μm.Chaetotaxy as shown in Table 3. Holotype:1♂,Rehai,Tengchong,Yunnan,27-Ⅳ-1996,collected by Xiao Ning nian. Remarks:The present new species,its spiracles is large;its foretarsus sensilla t 3 and d thin and long, c 'absent;thechaetotaxyoftergitesⅤ-Ⅶisdiffe rent from E belli and E dian .The species′name is derived from large spiracles. 4 E guyongense sp nov (Fig 2:F-I) Body length 645?μm.Head 107×78?μm.Pseudoculus 12?μm long,PR=8 9.Foretarsus 72?μm long and claw 19?μm,TR=3 8;EU=0 96.Dorsal sensilla t 1 claviform,BS=1 1; t 2 willow leaf like, t 3 clubform.Exterior sensilla a and c about same length, b thin and long, d long willow leaf like, e and g spatulated, f 1 willow leaf like, f 2 very short.Interior sensilla a 'broad and long,its tip can arrive the base of d ; b ' 1absent, b ' 2littleclubform, c 'absent.Thediameter of the spiracles 10?μm.Chaetotaxy as shown in Table 4. Holotype:1?
