Corresponding author: Guo-Liang Xu (
Academic editor: L. Deharveng
Two new blind species of
Xu G-L, Chen W-Y (2016) Two new species of
The genus
Specimens were cleared in Nesbitt’s fluid ( Nanjing Agricultural University
thoracic segment
abdominal segment
antennal segment
macrochaeta/ae
microchaeta/ae
mesochaeta/ae
S-microchaeta/ae
ordinary tergal S-chaeta/ae
Holotype: ♂ on slide, China, Guangdong Province, Huizhou City, Longmen County, Nankunshan Natural Reserve,
♀ on slide, China, Guangdong Province, Nanling National Natural Reserve,
No eyes. Long smooth straight chaetae present on antennae. Clypeal chaetae eight and median three much smaller. Labial chaetae as mrel1l2. Postlabial chaetae X and X2‒4 minute. “Smooth” inner differentiated tibiotarsal chaetae present. Manubrium without smooth chaetae. Mucronal spine long, with tip nearly reaching apical tooth.
Comparison among
|
|
|
|
Mac in Gr. II on dorsal head | 3(4) | usually 4‒5(6‒8) | usually 5‒6(4) |
Labial chaeta M1s | absent | present | absent |
Postlabial chaetae X and X2‒4 | smooth, minute | cliate, large | ciliate, large |
Mac m5i on |
absent | present | absent |
Mac on |
6+6 | 7(6)+7(6) | 7(6)+7(6) |
Central |
3+3 | 4+4 | 3+3 |
Lateral |
4(5)+4(5) | 6+6 | 6+6 |
Body length up to 1.50 mm. Body pale in alcohol.
Antenna 1.63‒1.93 times as long as cephalic diagonal. Antennal segments ratio as I : II : III : IV = 1 : 1.77‒2.00 : 1.64‒1.74 : 2.57‒2.91. Smooth spiny
Eyes absent in all specimens. Prelabral and labral chaetae 4/ 5, 5, 4, all smooth; labral intrusion U-shaped (Fig.
Trochanteral organ with 17‒19 smooth spiny chaetae; 11–12 in arms and 5‒7 internal (Fig.
Tergal chaetotaxy of
Named after the snake
In soil of bamboo forest, near termitarium.
Holotype: ♂ on slide, China, Guangdong Province, He Mountain, in soil of secondary eucalypt forest, 22 October 2012, Guoliang Xu leg. (# Xu-2012). Paratypes: 1 ♀ on slide and 1 juvenile in alcohol, same data as holotype.
No eyes. Long smooth straight chaetae absent on antennae. Labial chaeta r and postlabial chaetae X and X4 minute. “Smooth” inner differentiated tibiotarsal chaetae present. Tenent hairs clavate. Manubrium without smooth chaetae. Mucronal spine short, with tip reaching subapical tooth. Chaeta p5 as
Body length up to 1.32 mm. Body pale in alcohol.
Antenna 2.04 times as long as cephalic diagonal. Antennal segments ratio as I : II : III : IV = 1 : 1.71 : 1.86: 2.71. Smooth spiny
Eyes absent in all specimens. Prelabral and labral chaetae 4/ 5, 5, 4, all smooth; three chaetae of first row longer than lateral chaetae. Clypeal chaetae not clearly seen. Dorsal cephalic chaetotaxy with four antennal, three median (M) and eight sutural (S)
Trochanteral organ with nine smooth spiny chaetae; five in arms and four internal. Some inner differentiated tibiotarsal chaetae “smooth” with ciliations closely appressed to axis. Tibiotarsi distally with ten chaetae in a whorl. Unguis with three inner teeth; two paired teeth unequal, outer one larger. Unguiculus with a large outer tooth. Tenent hairs clavate (Fig.
Tergal chaetotaxy of
Named after the Chinese collembologist Dr. Feng ZHANG, who has made great contributions to the taxonomy of
In decomposing leaves along the roads.
Thanks are given to Dr. Feng Zhang (