Corresponding author: Huiqin Ma (
Academic editor: Pavel Stoev
The present paper deals with a new species of the genus
The subgenus
All specimens were hand-collected under stones. The material was examined with the aid of a Motic-C microscope, made in China. Colour description is based on specimens in 75% ethanol, and body length is measured from anterior margin of the cephalic plate to posterior end of telson. Type specimens are preserved in 75% ethanol and deposited in the College of Life Sciences, Hebei University, Baoding, China; some nontype material is deposited in the Department of Life Sciences, Hengshgui University, Hengshui, China. Terminology for external anatomy follows
The following abbreviations are used in the text and tables: T, TT = tergite, tergites; S, SS = sternite, sternites; C = coxa, t = trochanter, P = prefemur, F = femur, T = tibia, a = anterior, m = median, p = posterior.
The specific name is a patronym in honor of the zoologist Dr. Daxiang Song, Academician at the Chinese Academy of Sciences.
1 ♀♀, 3 ♂♂, Xiaowutai National Natural Reserve, Yu County, Zhangjiakou City, Hebei Province, 39°54'N, 115°00'E, 1236 m, 21 August 2005, leg. Z. Zhang and H. Ma.
A
Body 5.9–6.9 mm long; cephalic plate 0.6–0.7 mm long, 0.6–0.7 mm wide. Colour: tergites and basal articles pale brown; transition to yellow brownish from the seventh or eighth articles onwards, the terminal article yellow brown; tergites pale chestnut; pleural region pale gray; SS pale orange; distal part of forcipules brown, the remaining part of forcipules, forcipular coxosternite and SS 14 and 15 pale yellow-brownish; all legs pale yellow-brownish, tarsi of all legs yellow-brown.
Antennae composed of 19+19–21+21 articles (
Cephalic plate smooth, convex, as long as broad, covered with sparse tiny setae; anterior part of the cephalic capsule with shallow median sulcus; pigment concentrated as close netlike veins, few short to long setae scattered along the marginal ridge; lateral marginal ridge continuous; posterior margin straight, without widening in middle part (
Six–seven ocelli on each side of cephalic plate (
Tömösváry’s organ moderately small (
Coxosternite (
All tergites moderately smooth, without wrinkles, backside slightly hunched, tiny setae scattered very sparsely over the surface; T 1 generally subrectangular, anteriorly broadened; T 1 slightly narrower than T 3 and the cephalic plate, the latter slightly wider than T3; lateral marginations of all tergites continuous, setae scattered sparsely along the lateral borders, more setae on anterior angles of tergites; posterior margin of TT 1, 3, 5, 7, 8, 10, 12 and 14 slightly concave; all tergites without posterior triangular projections (
All sternites posterolaterally narrower than anterolaterally, generally trapeziform, moderately smooth, 2–4 moderately setae on anterior part of each sternite, 2–3 longer setae on posterior part of each sternite.
Legs strong, tarsus 1–2 articulation fused on legs 1–13, well-defined on legs 14 and 15; claw moderately long and curved ventrad in all legs; accessory spur on both anterior and posterior side of claw of legs 1–14, anterior accessory spur moderately long and thicker, forming a moderately large angle with the claw; posterior accessory spur short and slender, forming a comparatively small angle with the claw; no accessory claws on leg 15; short to moderately long setae scattered over the surface of legs 1–13, tarsi generally more setose, few setae on legs 14–15; legs 14 and 15 markedly thickened, the male more thicken than the female, tarsus 1 about 4.0–5.3 times longer than wide, tarsus 2 about 67%–81% length of tarsus on legs 15. Legs’ plectrotaxy: as in Table 1.
Coxal pores arranged in a row, ovate to round, moderately small, 1222. Pore-field set in a slightly shallow groove, 8 short to moderately long setae scattered sparsely over the margin of shallow groove.
Female S 15 posterolaterally narrower than anterolaterally, generally trapeziform, straight posteromedially; short to long setae scattered very sparsely over its surface and lateral margins. The sternite of genital segment usually well sclerotised, wider than long, posterior border moderately deeply concave between condyles of gonopods, except for a small, median approximately rhombic bulge, distally lightly sclerotised; short to moderately long setae evenly scattered over the surface of genital sternite except for middle and anterior parts. Female gonopods: basal article moderately broad, bearing 8 moderately long setae, arranged in 3 irregular rows, and 2+2 small coniform spurs; inner spur slightly smaller and more anterior than the outer (
Male S 15 posterolaterally narrower than anterolaterally, generally trapeziform, straight posteromedially; short to long setae scattered very sparsely over its surface and lateral margins. The sternite of genital segment usually well sclerotised, wider than long; comparatively long setae about evenly scattered on the ventral surface, slightly fewer near S15. Posterior margin of the sternite of the genital segment quite deeply concave between gonopods, no bulge medially; gonopods short and small, only a small hemispherical bulge, with 1–2 long setae on surface, terminal slightly sclerotised (
Known only fromthe Hebei Province (Hengshui and Zhangjiakou Cities), NE China.
Legs’ plectrotaxy of
legs | ventral | dorsal | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
C | t | P | F | T | C | t | P | F | T | |
1 | p | a | m | p | ap | a | ||||
2 | p | am | m | p | ap | ap | ||||
3–9 | am | m | ap | ap | ||||||
10 | am | m | p | ap | ||||||
11 | (m) | am | m | p | p | p | ||||
12 | mp | am | am | p | p | p | ||||
13 | (m) | mp | (a)m(p) | m | mp | p | p | |||
14 | m | mp | m | m | mp | |||||
15 | m | mp | m | m | mp |
Havingan eye composed of 6–7 ocelli and about 20 antennal articles, the new species resembles
The type series has been collected in a roadside of a mountain pine tree forest and under Chinese jujube trees in champaign environments.
To assist in the identification of the Chinese species of
1 | Four ocelli on each side of cephalic plate, 17+17 antennal articles | |
– | Five or more ocelli on each side of cephalic plate, not less than 18+18 antennal articles | 2 |
2 | Five ocelli on each side of cephalic plate | |
– | Six or more ocelli on each side of cephalic plate | 3 |
3 | With spines on the second article of female gonopod | 4 |
– | Without spines on the second article of female gonopod | 5 |
4 | With two spines on the second article of female gonopod, six–ten ocelli on each side of cephalic plate, 1222–2222 coxal pores | |
– | With three spines on the second article of female gonopod, eight–eleven ocelli on each side of cephalic plate, 2222–3443 coxal pores | |
5 | Terminal claw of female gonopod simple | |
– | Terminal claw of female gonopod bidentate or tridentate | 6 |
6 | Terminal claw of female gonopod tridentate | 7 |
– | Terminal claw of female gonopod bidentate | 8 |
7 | Tomosvary’s organ slightly smaller than adjoining ocellus; terminal ocellus largest | |
– | Tomosvary’s organ slightly larger than adjoining ocellus or about same in size; terminal two ocelli largest | |
8 | Tomosvary’s organ larger than largest ocellus, antennae 20–25 articles | |
– | Tomosvary’s organ about same size as the adjoining ocelli, antennae 19 articles |
This project was supported by the National Natural Science Foundation of China (NSFC grant No. 30900131) and the Program for Research and Development of Science and Technology of Hebei Province (grant No. 09276724). We are grateful to Dr. Gregory D. Edgecombe, London, U.K. for his hospitality and everlasting help during our research. We also wish to thank Dr. Marzio Zapparoli, Viterbo, Italy, Dr. Rowland M. Shelley, North Carolina, USA, Dr. His-Te Shih, Taichung, China, and Dr. Nobuo Tsurusaki, Japan, for providing us with valuable literature related to this project. We express our gratitude to Dr. Zi-Zhong Yang and Dr. Zhi-Sheng Zhang for their help in preparing the paper.