Cavariella araliae Takahashi, 1921

Xu, Ying, Chen, Jing, Jiang, Li-Yun & Qiao, Ge-Xia, 2023, Cavariella Del Guercio (Hemiptera, Aphidinae, Macrosiphini) in China, with a new species, new synonymies, and first country records, ZooKeys 1169, pp. 235-292 : 235

Cavariella araliae Takahashi, 1921

Figs 6 , 7 , 32F

Cavariella araliae Takahashi, 1921: 37.

Specimens examined.

Two ap. viv. fems., China: Guizhou (Xishui County), 30.V.2000, No. 12518-1-1, on Aralia , coll. G.X. Qiao ; two ap. viv. fems., Sichuan ( Chengdu City ), 21.VIII.2018, No. 43979-1-1, on Aralia , coll. Y. Xu and J.F. Ji ; one ap. viv. fem., Guizhou ( Fanjing Mountain ), 1.VIII.2014, No. 33707-1-1, on Aralia , coll. Y.Q. Li and F.F. Niu ; five ap. viv. fems. and three ala. viv. fems., Hainan (Linshui County), 7.IV.2015, No. 32504-1-1, No. 32505-1-1, No. 32507-1-1, No. 32503-1-1, on Aralia , coll. R. Chen ; two ap. viv. fems., Yunnan (Jinping County), 17.IV.2018, No. 42356-1-1, on Aralia , coll. Y. Xu ; three ap. viv. fems., Hunan (Ningyuan County), 27.V.2017, No. 39559-1-1, No. 39557-1-1, on Aralia , coll. C.C. Du and K. Hao ; one ap. viv. fem., Guangdong ( Shaoguan City ), 7. VI.2017, No. 39667-1-1, on Aralia , coll. C.C. Du and K. Hao ; two ap. viv. fems. (slides) and one ap. viv. fem. (COI: OP956137 ), Hubei (Yien County), 30.IV.2019, No. 45335-1-1, on Aralia , coll. X. L. Zhang ; one ap. viv. fems., Sichuan ( Leshan City ), 7.VI.2014, No. 31318-1-1, on Salix , coll. Y. Wang and X. J Tang.

Diagnosis.

Supra-caudal long conical, pointed apex, much longer than cauda (Fig. 6G, I ); antennae 5-segmented (Fig. 6C ), PT 1.59 × Ant. Vb; URS wedge-shaped (Fig. 6D ), 1.40 × HT II ( Takahashi 1921; Jiang et al. 2011).

Biology.

The species mostly feeds on stems and shoots of Araliaceae (Fig. 32F ) ( Aralia , Schleffera , Tetrapanax ), and be found also feeding on Salix ( Blackman and Eastop 2022). The species may migrate between Salix and Araliaceae .

Distribution.

China (Guangdong, Guizhou, Hainan, Henan, Hunan, Jiangsu, Jilin, Liaoning, Sichuan, Taiwan, Yunnan, Zhejiang) ( Jiang et al. 2011), Japan, Korea, Russia.

Figures

Figure 6. Cavariella araliae Takahashi. Apterous viviparous female: A dorsal view of body B dorsal view of head C antenna D ultimate rostral segment E mesosternal furca F sculptures of abdominal tergites G abdominal tergites VI-VIII H siphunculus I supra-caudal process on abdominal tergite VIII J cauda. Scale bars: 0.10 mm.

Figure 7. Cavariella araliae Takahashi. Alate viviparous female: A dorsal view of body B antenna C abdominal tergites VI-VIII D siphunculus E supra-caudal process on abdominal tergite VIII F genital plate G cauda. Scale bars: 0.10 mm.

Figure 32. The ecological habitat photographs of Cavariella in the field A, B the apterae and nymphs of Cavariella aquatica (Gillette & Bragg) feeding on the leaves of Salix along main vein C the apterae and nymphs of Cavariella aquatica feeding on the leaves of Poaceae D the apterae and nymphs of Cavariella aegopodii (Scopoli) feeding on the leaves of Salix along main vein E the apterae and nymphs of Cavariella angelicae (Matsumura) feeding on the tender leaves of Salix F the apterae and nymphs of Cavariella araliae Takahashi feeding on tender tips of Aralia G the apterae and nymphs of Cavariella bhutanensis Chakrabarti & Das feeding on the leaves of Salix along main vein H the apterae of Cavariella gilgiana Zhang, Chen, Zhong & Li feeding on the leaves of Salix.