Description of two new Chinese Subancistrocerus de Saussure ( Hymenoptera , Vespidae , Eumeninae ) , with a key to the Chinese species

Two new species from Yunnan, China are described and illustrated, namely Subancistrocerus compressus and Subancistrocerus jinghongensis. In addition, S. camicrus (Cameron) and S. sichelii (de Saussure) are newly recorded from China. A key to the Chinese species of Subancistrocerus is provided. Type specimens of the new species are deposited in Chongqing Normal University and Yunnan Agricultural University.

Description of two new Chinese Subancistrocerus de Saussure (Hymenoptera, Vespidae, Eumeninae), with a key to the Chinese species

Introduction
De Saussure (1855) provided the name Subancistrocerus for his division I of the subgenus Ancistrocerus Wesmael of the genus Odynerus Latreille.This genus contains 29 species with three subspecies, and is mainly distributed in the Oriental Region (Giordani Soika 1994;Gusenleitner 2000; Kumar 2013).The Ethiopian Region has five species with one subspecies, and there are two in the Australian Region (Giordani Soika 1961, 1993;Carpenter et al. 2010).In addition, two species occur in more than one Region (Giordani Soika 1994;Madl et al. 1996;Giordani Soika and Kojima 1988).Only S. kankauensis (von Schulthess) was recorded from China so far (Schulthess 1934;Giordani Soika 1994).In our study of the eumenine wasps of China, five species of Subancistrocerus have been collected and recognized, of which two are new to science and two are newly recorded from China.In the present paper, the two new species are described and illustrated in detail, and a key to the Chinese species of Subancistrocerus is provided.In addition, we also provide the taxonomic information and global distributions for these five species.The key and distributions were produced based on both the examination of specimens and the information extracted from the literature.

Materials and methods
The specimens examined are deposited in the Institute of Entomology and Molecular Biology, Chongqing Normal University, Chongqing, China (CQNU) and Department of Entomology, College of Plant Protection, Yunnan Agricultural University, Kunming (YNAU), respectively.Descriptions and measurements were made under a stereomicroscope (Nikon SMZ1500), and all figures were taken with a stereomicroscope (LEICA EZ4HD) attached to a computer using Leica Application Suite version 2.1.0software.The ratios used throughout the descriptions were measured in the same amplifying multiple of stereomicroscope.All measurements were taken as the maximal length of body parts measured.Body length was measured from the anterior margin of the head to the posterior margin of metasomal tergum 2. For the density description of punctures, "sparsely" means that the interspaces are larger than one puncture diameter, "moderately" means equal to the diameter, and "densely" means less than one diameter.The abbreviations used in the text are as follows: A1 for antennal segment 1, A2 for antennal segment 2, T1 for metasomal tergum 1, T2 for metasomal tergum 2, S1 for metasomal sternum 1, S2 for metasomal sternum 2, and so on.Terminology principally follows Carpenter (1982) and Carpenter and Cumming (1985).
Diagnosis.This genus is related to some of Pseudonortonia Giordani Soika, with which it shares metasomal tergum 1 with two transverse carinae.However, Subancis-trocerus differs from Pseudonortonia in haveing tergum 1 wider than long in dorsal view and both transverse carinae close to each other at the crest of the declivity (Carpenter et al. 2009).

Subancistrocerus compressus
Description.Female (Figs 1, 3): body length 5.0 mm, forewing length 5.5 mm.Black, with the following parts yellow: apex of ocular sinus, postocular spot, interantennal spot, scape ventrally, clypeus except medial dark brown spot (Fig. 3), contiguous triangular pronotal spots, parategula, nearly coterminous spots of metanotum, and apical bands of T1 and T2; antennae ventrally except scape yellow to brown; mandible basally white and apically dark ferruginous; tegula and tibiae outside brownish yellow; apical margin of fore femur to apex of tarsi largely brown, and other parts of legs dark brown.
Mesosoma.Length of mesosoma: width = 19:12; pronotal carina somewhat rounded laterally; pronotum, scutum, scutellum and mesopleuron except posteriorly densely punctate, the punctures obviously larger and deeper than those on head; punctures on metanotum sparser than those on other parts of thorax, left and right parts of metanotum contiguously tiled, metapleuron impunctate and somewhat coriaceous; propodeum coarse, with lateral carina and densely reticulate ridges, side somewhat coriaceous.
Etymology.The specific name is derived from the Latin word: compressus (compressed), with reference to the male fore femur with an anteroventral compression basally.Description.Female (Figs 12, 17): body length 6.0 mm, forewing length 5.5.0 mm.Body black; with the following parts whitish yellow to yellow: apex of ocular sinus, interantennal spot, postocular spot, scape ventrally, clypeus except medial spot and apical margin, contiguous triangular pronotal spots, parategula, spots on metanotum, apex of fore femur and fore tibia outside, spots of apex of mid femur and tibia outside, and apical bands of T1, T2 and S2; antennae ventrally except scape yellow to brown; apical margin and medial spot of clypeus dark brown; mandible basally white yellow and apically ferruginous to dark brown; tegula brownish yellow; fore tibia inside to tarsal apex largely ferruginous, and other tarsi brownish yellow to brown; other parts of mid leg dark brown.
Recognition.The species is similar to S. reflexus Giordani Soika, 1994 from Philippines in mid tarsomere 1 in male curved and short, much shorter than the following segments together (Fig. 19), and A13 foliaceous, gradually narrowing from base to apex, and its apex reaching the base of A10 .It differs from that species and all other members of the genus by the following character combination: apical margin of T2 normal, not reflected; fore tarsomere 1 arched, and almost equal to the following segments together (Fig. 18); and body length obviously smaller than in reflexus.