Cavariella konoi Takahashi, 1939

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 konoi Takahashi, 1939

Figs 13 , 14 , 33D

Cavariella konoi Takahashi, 1939: 117.

Specimens examined.

One ap. viv. fem. and one ala. viv. fem. (slides), one ap. viv. fem. (COI: OP956129 ), China: Jilin, 4.VIII.2017, No. 41101-1-1, on Salix , coll. H. Long and T.Y. Liu ; one ap. viv. fem. and one ala. viv. fem. (slides), one ap. viv. fem. (COI: OP956132 ), Jilin, 8.VIII.2017, No. 41195-1-1, on Salix , coll. H. Long and T.Y. Liu.

Diagnosis.

PT 1.67-1.80 × Ant. VIb; URS 1.02-1.08 × HT II; SIPH long clavate (Fig. 13H ), 0.21-0.22 × body length; ABD TERG VIII with short conical supra-caudal (Fig. 13J ), 0.04-0.07 mm, as long as basal width; Ant. III and IV each with 28-32, 3 circular secondary rhinaria in alatae (Fig. 14B ) ( Takahashi 1939).

Comment.

Cavariella konoi was first described in China by Zhang et al. (1999), but by checking the specimens, it was established that they were misidentified and should be Cavariella nigra Basu, 1964.

Biology.

The species was found feeding on the undersides of leaves of Salix (Fig. 33D ) in China, and it migrate between Salix and Apiaceae ( Blackman and Eastop 2022).

Distribution.

China (Jilin), Canada, Denmark, Finland, Germany, Japan, Mongolia, Norway, Poland, Russia, Sweden, UK, USA.

Figures

Figure 13. Cavariella konoi 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 I-VI G abdominal tergites VI-VII H siphunculus I sculptures of abdominal tergite VII J supra-caudal process on abdominal tergite VIII K cauda L anal plate. Scale bars: 0.10 mm.

Figure 14. Cavariella konoi Takahashi. Alate viviparous female: A dorsal view of body B antenna C siphunculus D supra-caudal process on abdominal tergite VIII E cauda F anal plate. Scale bars: 0.10 mm.

Figure 33. The ecological habitat photographs of Cavariella in field A the apterae and nymphs of Cavariella japonica (Essig & Kuwana) feeding on tender stem of Salix B, C the apterae and nymphs of Cavariella japonica feeding on tender stem of Apiaceae D the apterae and nymphs of Cavariella konoi Takahashi feeding on the leaves of Salix.