Corresponding author: Maoyin Sheng (
Academic editor: F. Montealegre-Z
A new species of the genus
Zha L-S, Sheng M-Y, Wen T-C, Hyde KD (2016) A new species and a revised key of the genus
The genus
During investigation of species diversity in Lengshuihe Nature Preserve, Jinsha County, Guizhou Province, China during 3–10 Aug 2015, a new species of the genus
Specimens were photographed using a stereomicroscope (Keyence VHX-1000). Morphological terminology and measurement landmarks follow
Female. Body size small, covered with numerous small granules and many nodules.
Length of body ♂6.2–7.8 mm, ♀7.5–9.0 mm; length of pronotum ♂6.1–7.0 mm, ♀7.5–8.7 mm; length of hind femur ♂3.5–4.2 mm, ♀4.7–5.4 mm.
Holotype female, China, Guizhou, Jinsha County, Lengshuihe Natural Reserve,
Outline of lateral lobes of pronotum with apex of posterior angle of different individuals of
All specimens of the new species were collected in humid, sandy, and stony environments alongside streams (Fig.
Habitats of
This new species epithet means spine of upper lobe of posterior angle of lateral lobe of pronotum varies in different individuals.
China (Guizhou).
1 | Tegmen and wing invisible. Indonesia |
|
– | Tegmina and wings visible |
|
2 | Upper lobe of posterior angle of lateral lobe of pronotum not produced or slightly produced, not spinose (Fig. |
|
– | Upper lobe of posterior angle of lateral lobe of pronotum produced conspicuously and spinose (Fig. |
|
3 | Body length 10.79–12.81 mm; hind process of pronotum distinctly surpassing apex of hind femur (Fig. |
|
– | Body length 6.0–9.0 mm; hind process of pronotum shorter, only reaching or slightly surpassing apex of hind femur (Fig. |
|
4 | Vertex 1.5 times as wide as one eye; midkeel of pronotum reaching anterior margin of pronotum; upper margin of hind femur before antegenicular denticle with 2–3 lamellate protrusions, lower margin with a distinct protrusion. China |
|
– | Vertex 1.8–2.0 times as wide as one eye; midkeel of pronotum not reaching anterior margin of pronotum; upper margin of hind femur before antegenicular denticle with a small protrusion only, lower margin without protrusion. China |
|
5 | Hind process of pronotum shorter, not reaching or reaching apex of hind femur (Fig. |
|
– | Hind process of pronotum longer, surpassing apex of hind femur (Fig. |
|
6 | Hind process reaching apex of hind femur (Fig. |
|
– | Hind process not reaching apex of hind femur (Fig. |
|
7 | Wings shorter, not reaching apex of hind process; third pulvillus of first segment of hind tarsus longer than second (Fig. |
|
– | Wings longer, reaching apex of hind process; third pulvillus of first segment of hind tarsus equal to second in length |
|
8 | Upper lobe of posterior angle of lateral lobe of pronotum obliquely dentate (Fig. |
|
– | Upper lobe of posterior angle of lateral lobe of pronotum acutely spinose, pointing laterally (Fig. |
|
9 | Body size stout; hind process of pronotum surpassing slightly beyond apex of hind femur (Fig. |
|
– | Body size slender; hind process of pronotum surpassing far beyond apex of hind femur (Fig. |
|
10 | Anterior margin of vertex nearly as wide as posterior margin; spine of upper lobe of posterior angle of lateral lobe of pronotum pointing distinctly obliquely backward (Fig. |
|
– | Anterior margin of vertex distinctly narrower than posterior margin; spine of upper lobe of posterior angle of lateral lobe of pronotum pointing laterally or slightly obliquely backward |
|
11 | Spine very long (Fig. |
|
– | Spine shorter (Fig. |
|
12 | Antenna inserted at the level of lower margins of eyes, the longest segment 4.0 times as long as wide; first segment of hind tarsus 1.75 times as long as third. China, India |
|
– | Antenna inserted decidedly below lower margins of eyes, the longest segment 6 times as long as wide; first segment of hind tarsus 1.3–1.4 times as long as third. Thailand |
|
13 | Spine of upper lobe of posterior angle of lateral lobe of pronotum pointing laterally (Fig. |
|
– | Spine of upper lobe of posterior angle of lateral lobe of pronotum pointing obliquely backward (Fig. |
|
14 | Vertex 2.0 times as wide as one eye; wings not reaching apex of hind process (Figs |
|
– | Vertex not more than 1.5 times as wide as one eye; wings reaching or surpassing apex of hind process |
|
15 | Spine slender and longer (Fig. |
|
– | Spine shorter (Fig. |
|
16 | Vertex wider, 1.5–2.0 times as wide as one eye (Fig. |
|
– | Vertex narrower, 1.18–1.35 times as wide as one eye |
|
17 | Wings longer, surpassing far beyond apex of hind process; disc of pronotum black. China |
|
– | Wings shorter, not reaching or surpassing slightly beyond apex of hind process; pronotum and body in the same color |
|
18 | Pronotum not less than 5.0 times as long as posterior part of hind process which is beyond apex of hind femur |
|
– | Pronotum not more than 4.0 times as long as posterior part of hind process which is beyond apex of hind femur |
|
19 | Lateral keels of prozona parallel; wings not reaching apex of hind process. China |
|
– | Lateral keels of pronoza distinctly contracted backward; wings surpassing apex of hind process. China |
|
20 | Antenna inserted between lower margins of eyes; lateral keels of pronoza parallel; humeral angle widely rounded. China, India |
|
– | Antenna inserted decidedly below lower margins of eyes; lateral keels of pronoza distinctly contracted backward; humeral angle obtusely angled. Thailand |
|
21 | Vertex 1.25–1.35 times as wide as one eye; body surface smooth; length of posterior part of hind process which is beyond apex of hind femur 3.0–3.4 mm (Fig. |
|
– | Vertex nearly as wide as one eye; body surface coarse; length of posterior part of hind process which is beyond apex of hind femur 1.5-2.0 mm (Fig. |
|
Variations of spine of posterior angle of lateral lobe of pronotum in the genus
Variations of the length of pronotum in the genus
Species of the genus
According to
Body size small. Vertex equal to or wider than one eye, frontal ridge distinctly protruding forward between antennae. Antenna filiform, inserted between or below lower anterior margins of eyes. Eyes globular and prominent, lateral ocellus situated in or slightly below middle of anterior margin of eye. Distal segments of maxillary palpus slightly compressed. Pronotal disc generally covered with many nodules; midkeel undulate, partially lamellate and erected before shoulders; pronotum slightly uplifted between shoulders; a pair of abbreviated carinae present between shoulders; lateral margins of pronotum behind humeral angles folded upwards; hind process of pronotum wedge-shaped, not reaching, reaching or surpassing apex of hind femur; posterior angle of lateral lobe of pronotum laminate and expanded and extending outwards, apex varies conspicuously: 1) upper lobe generally produced, spinose or acutely angled, extending laterally or obliquely backward; 2) lower lobe generally truncate, sometimes also produced and obtusely angled or acutely angled; 3) both upper and lower lobes not produced or produced inconspicuously, and apex truncate or subtruncate. Visible part of tegmina ovate, hind wing normal but invisible in
This work was supported by the Guizhou R&D Programs for Social Development (Qiankehe SY[2015]3052 and SZ[2014]3036) and the Guizhou Science and Technology Cooperation Program (Qiankehe LH Zi [2015] No. 7779).