Holcotetrastichus rhosaces (Walker, 1839), new record from China

Figs 11, 12-17, 18-20

Cirrospilus rhosaces Walker, 1839: 293.

Cirrospilus racilla Walker, 1839: 312. [Synonymised by Graham 1961: 37].

Tetrastichus racilla: Walker 1848: 149.

Tetrastichus rhosaces: Walker 1848: 147.

Aprostocetus rhosaces: Graham 1961: 37.

Holcotetrastichus rhosaces: Graham 1991: 272; Narendran 2007: 120.

Holcotetrastichus rhosaceus [sic]: Boyadzhiev 2000: 27.

Material examined.

9 females and 2 males: [2 females on slides], Liaoning Province, Anshan City, Mount Qianshan, 23.VI.2013, Hui Geng, Zhi-Guang Wu, Yan Gao, Si-Zhu Liu, by sweeping; [1 female on slide], Jiangxi Province, Yichun City, Mount Guanshan, 22-24.VIII.2018, Xiang-Xiang Jin, Wang-Ming Li, by yellow- pan trapping; [1 female and 1 male on slides, 1 female and 1 male on cards], Qinghai Province, Prefecture Huangnan, Forestry Station Maixiu, 26-29.VIII.2019, Ming-Rui Li, by yellow pan trapping; [2 females on cards], Jinlin Province, County Wangqing, Forestry Station Qinhe, 8.VII.2013, Ye Chen, Zhi-Guang Wu, by sweeping; [2 females on cards], Heilongjiang Province, City Heihe, Park Beishang, 22.VII.2020, Ming-Rui Li, by sweeping. (All deposited in NEFU) .

Diagnosis.

Female. Body black, with weak metallic reflections (Fig. 11). Mesosoma (Fig. 14) with mid-lobe of mesoscutum weakly reticulate, 2 adnotaular setae in single row on each side, median line indicated only posteriorly; sublateral grooves of scutellum deep and broad with strong transverse costulae, submedian grooves rather weak. Forewing (Fig. 15) broad, 2.0 × as long as broad, SMV with 2 dorsal setae, MV 2.8-3.2 times length of STV, PMV distinctly short. Gaster (Fig. 16) with hypopygium almost reaching tip of gaster.

Male. Antenna (Fig. 18) with scape broad, ventral plaque 0.7 length of scape; F1 shorter than F2; each segment of funicle with whorl setae reaching well beyond the tip of the segment.

Hosts.

Unknown from China. Non-Chinese records include Cassida deflorate Suffrian, 1844, Cassida murraea Linnaeus, 1767, Cassida nebulosa Linnaeus, 1758, Cassida nobilis Linnaeus, 1758, Cassida rubiginosa Mueller, 1776, Cassida viridis Linnaeus, 1758, Cassida vittate Villers, 1789 (Graham 1991), Cassida piperata Hope, 1842 (Nagasawa et al. 2003).

Distribution.

China (Heilongjiang, Liaoning, Jilin, Qinghai, Jiangxi); Austria, Czech Republic, Czechoslovakia, France, Germany, Hungary, Ireland, Italy, Moldova, Romania, Switzerland, United Kingdom (Graham 1991), Bulgaria (Boyadzhiev 2000), Netherlands (Gijswijt 2003), Poland (Domenichini 1966), Russia (Yegorenkova et al. 2007), Sweden (Hansson 1991), Japan (Ikeda 1997), and United States of America (Boyadzhiev 2000).

Comments.

Most species we collected had weak metallic reflections compared to the species reported by Graham (1991).