Penghou yulongshan, Ruan, Yong-Ying, Konstantinov, Alexander S., Prathapan, K. D., Ge, Si-Qin & Yang, Xing-Ke, 2015

Ruan, Yong-Ying, Konstantinov, Alexander S., Prathapan, K. D., Ge, Si-Qin & Yang, Xing-Ke, 2015, Penghou, a new genus of flea beetles from China (Coleoptera: Chrysomelidae: Galerucinae: Alticini), Zootaxa 3973 (2), pp. 300-308 : 305-307

Penghou yulongshan new species

( Figs 1–25 )

Body length: 1.90–2.20 mm; body width: 0.80–1.10 mm. Ratio of pronotum width at base to width at apex: 1.00– 1.05. Elytra length (along suture) to width of both (maximum): 1.59–1.63. Length of elytron to length of pronotum: 2.70–2.90. Abdomen length to height of the body (in lateral view including metasternum): 2.65–2.72.

Head, pronotum except base, lateral sides of elytra, ventral side of body, basal antennomere, and femora dark brown to black with light bronzish tint. Elytral disc, basal part of pronotum, tibae, and tarsi, and antennomere second to seventh light brown. Elytral surface and frontal part of pronotum with sparse, erect hairs.

Vertex with shallow, oblique grooves above antennal calli. Surface of vertex covered with mostly transverse wrinkles and with few shallow punctures. Orbit with 2 setiferous punctures. Supraorbital pore barely recognized. Distance between antennal sockets to transverse diameter of one antennal socket 1.25–1.30.

Antennomere 1 shorter than next two combined. Antennomere 2 about as long but wider than antennomere 3, shorter than 4. Antennomere 5 about as long as antennomeres 4 and 6 separately. Lenght to width of antennomere 9: 1.75–1.80; 10: 1.62–1.68; and 11: 2.25–2.35.

Pronotal surface covered with relatively coarse punctures, distance between them about as great or greater than their diameter. Punctures on sides form relatively deep, oblique wrinkles.

Elytral punctures on disc about as large and dense as pronotal punctures, smaller sparser and shallower on sides and apex.

Length (not counting trochanter) to maximum width of metafemur 2.35–2.45. Length to width of metatibia in lateral view 5.60–5.70. Width of metatibia at base to width at apex in dorsal view 0.44–0.45. Lenght of metatibia to lenght of first metatarsomere 2.80–2.85. Length of metafumur to metatibia 1.15–1.20. Apical spur of metatibia simple, narrow, ending in one tooth, situated medially. First protarsomere of males about as wide and long as in females. First protarsomere of male, length to width ratio (in dorsal view): 1.62–1.70. Length of first protarsomere to length of second protarsomere: 1.40–1.45. Width of first protarsomere to width of second protarsomere: 1.12– 1.17. First metatarsomere of male, length to width ratio (in dorsal view): 3.10–3.12. Length of first metatarsomere to length of second metatarsomere: 1.50–1.60. Width of first metatarsomere to width of second metarsomere: 0.97– 1.02. Length of fourth metatarsomere to length of third metatarsomere: 1.80–1.90.

Median lobe of male genitalia relatively short and wide, with apex narrowing broadly, lacking denticle. Ventral surface with relatively narrow groove, widening abruptly in apical one third.

Spermathecal receptacle nearly cylindrical with straight inner side and slightly curved outer side. Border between receptacle and pump making a “lip” on internal side. Spermathecal duct long, making 3 turns in a single plain. Vaginal palpi separated medially, with apex gradually convex laterally and nearly straight medially, bearing about 9 long setae. Posterior end of tignum relatively well sclerotised, forming two highly sclerotized, long teeth at the end.

Etymology. This species is named after the mountain region in Yunnan, Yulongshan where it was collected.

Holotype. male: 1) China, Yunnan, Lijiang, 29.V. 2002, Yulongshan , Black River, 2800m, N27°08'46" E100°15'03", leg. A. Konstantinov & M. Volkovitsh; 2) ♂; 3) Holotype; 4) Penghou yulongshan n. sp. des. Ruan et al. 2014 ( IZCAS).

Paratypes. Male and female: 1) China, Yunnan, 30.V.2002, 20km N Lijiang Yulongshan , 3406m, dry river, N27°05'39" E100°13'45", leg. A.Konstantinov &M. Volkovitsh; 2) Paratype Penghou yulongshan new species, des. Ruan et al. 2014 (2 USNM). Male: 1) China, Yunnan, 32km N. Lijiang, 02.VI.2002, Yak Meadow, 3600m N27°10'11" E100°14'55", leg. A.Konstantinov &M. Volkovitsh; 2) Paratype Penghou yulongshan new species, des. Ruan et al. 2014 ( USNM). Male: 1) China, Yunnan, Lijiang, 29.V.2002, Yulongshan , Black River 2800m N27°08'46" E100°15'03", leg. A.Konstantinov &M. Volkovitsh; 2) Paratype Penghou yulongshan n. sp., des. Ruan et al. 2014 ( USNM).

Distribution. China (Yunnan province.).

Host plant. Unknown.

Figures

FIGURES 1, 2. Penghou yulongshan sp. n., 1 — paratype, dorsal habitus; 2 — paratype, lateral habitus.

FIGURES 3 – 6. Penghou yulongshan sp. n., 3 — head, frontal view; 4 — mouth parts, ventral view; 5 — maxilla; 6 — pronotum.

FIGURES 7 – 12. Penghou yulongshan sp. n., 7 — paratype, ventral side; 8 — pro- and mesosterna; 9 — last abdominal tergite; 10 — metasternum and abdominal ventrites; 11 — metatibia, dorsal view; 12 — metatibia lateral view.

FIGURES 13 – 16. Penghou yulongshan sp. n., 13 — tarsal claws; 14 — elytral apex; 15 — right elytron, dorsal view; 16 — left elytron, ventral view.

FIGURES 17 – 20. Penghou yulongshan sp. n., 17 — right elytron, lateral view; 18 — elytron binding patches; 19 — spicules on distant binding patch; 20 — spicules on basal binding patch.

FIGURES 21 – 25. Penghou yulongshan sp. n., 21 — wing; 22 — vaginal palpi; 23 — spermathca; 24 — tignum; 25 — median lobe of aedeagus, ventral and lateral views.