Corresponding author: Mei-Jun Zhao (
Academic editor: V. Assing
Five new apterous species of the genus
Up to date, 57 species of the genus
In 2004 and 2008, our colleagues conducted two expeditions to Baishanzu and collected numerous
Five apterous species were identified. Based on the morphology and chaetotaxy of the male sexual characters, they belong to two different species groups.
The following abbreviations are used in the text, with all the measurements in millimeters:
length of body from the anterior margin of the labrum to the apex of the abdomen;
length of forebody from the anterior margin of the clypeus to the posterior margin of the elytra;
length of head from the anterior margin of the clypeus to the posterior margin of the head;
maximum width of head;
length of pronotum along midline;
maximum width of pronotum;
length of elytra from the apex of the scutellum to the posterior margin of the elytra.
The type material is deposited in the Insect Collection of Shanghai Normal University, Shanghai, China (
(2 ♂♂)
Measurements and ratios:BL 8.50–9.30, FL 3.00–3.63, HL 1.13–1.15, HW 1.26–1.31, PL 1.48–1.54, PW 1.30–1.35, EL 0.98–1.00, HL/HW 0.88–0.90, HW/PW 0.97, HL/PL 0.75–0.76, PL/PW 1.14, EL/PL 0.65–0.66.
Habitus as in
Head subquadrate (HL/HW 0.88–0.90); punctation coarse and sparse; interstices with very shallow microreticulation; eyes small, approximately 1/4–1/3 the length of postocular region in dorsal view.
Pronotum nearly parallel-sided; punctation sparser than that of head; impunctate midline broad; interstices without microsculpture.
Elytra with punctation denser than that of pronotum and well defined; hind wings completely reduced.
Abdomen with dense punctation; interstices with very shallow, transversely striate microsculpture.
Male. Sternite V (
Female. Unknown.
East China: Donggong mountain range.
The specific epithet is derived from the type locality “Baishanzu”.
Two distinct species groups occur in Baishanzu. One of these groups includes
Among the species of this group,
Habitus of
Habitus of
(5 ♂♂, 5 ♀♀)
Measurements and ratios:BL 10.57–12.51, FL 5.33–6.17, HL 1.63–1.70, HW 1.88–1.95, PL 2.23–2.30, PW 1.95–2.07, EL 1.40–1.50, HL/HW 0.86–0.88, HW/PW 0.94–0.96, HL/PL 0.73–0.74, PL/PW 1.11–1.14, EL/PL 0.63–0.65.
Habitus as in
Male. Sternite III (
Female. Posterior margin of tergite VIII (
East China: Donggong mountain range.
The specific epithet (superlative of the Latin adjective immanis: huge) alludes to the size of the aedeagus.
(2 ♂♂)
Measurements and ratios:BL 9.10–10.00, FL 4.11–4.17, HL 1.20–1.26, HW 1.39–1.50, PL 1.75–1.79, PW 1.52–1.57, EL 1.11–1.13, HL/HW 0.84–0.86, HW/PW 0.91–0.96, HL/PL 0.69–0.70, PL/PW 1.14–1.15, EL/PL 0.63.
Habitus as in
Male. Sternite IV (
Female. Unknown.
East China: Donggong mountain range.
The specific epithet (Latin, adjective: hairy) alludes to the chaetotaxy of the male sternite IV.
This species is close to
(3 ♂♂, 1 ♀)
Measurements and ratios:BL 8.62–10.06, FL 4.10–4.14, HL 1.11–1.20, HW 1.23–1.30, PL 1.65–1.70, PW 1.39–1.44, EL 1.04–1.11, HL/HW 0.90–0.92, HW/PW 0.88–0.90, HL/PL 0.67–0.71, PL/PW 1.18–1.19, EL/PL 0.63–0.65.
Habitus as in
Male. Sternite IV (
Female. Posterior margin of tergite VIII (
East China: Donggong mountain range.
The species is named after Liang Tang, who collected the type seris.
(17 ♂♂, 5 ♀♀)
Measurements and ratios:BL 6.34–7.23, FL 2.84–3.12, HL 0.65–0.71, HW 0.87–0.91, PL 1.11–1.19, PW 0.99–1.06, EL 0.76–0.81, HL/HW0.73–0.78, HW/PW 0.86–0.90, HL/PL 0.56–0.62, PL/PW 1.11–1.15, EL/PL 0.67–0.69.
Habitus as in
Male. Sternites III-VI unmodified; posterior margin of sternite VII (
Female. Posterior margin of tergite VIII (
East China: Donggong mountain range.
The specific epithet (Latin, adjective: awry) alludes to the chaetotaxy of the male sternite VIII.
The new species is similar to
All the collectors mentioned in the text are acknowledged for their field work. The study is supported by the National Natural Science Foundation of China (No. 31101659 and No. 31172134, 31201734), the Foundation of Shanghai Municipal Education Commission (No. 12YZ077 and No. 13YZ062) and Shanghai Normal University (SK201234 and B–9013–11–003127).
Peng Z, Li LZ, Zhao MJ (2012) Two new apterous species of
The name