Cavariella angelicae (Matsumura, 1918)

Figs 5, 32E

Metaphis angelicae Matsumura, 1918: 1.

Specimens examined.

Two ap. viv. fems. (slides) and one ap. viv. fem. (COI: OP956148), China: Sichuan ( Ganzi City), 15.VI.2021, No. 51435-1-1, on Salix, coll. T.Y. Liu and S. Xu ; one ap. viv. fem. and one ala. viv. fem. (slides), one ap. viv. fem. (COI: OP956145), Sichuan ( Ganzi City), 12.VI.2021, No. 50575-1-1, on Salix, coll. T.Y. Liu and S. Xu ; two ap. viv. fems. and two ala. viv. fems. (slides), one ap. viv. fem. (COI: OP956146), Sichuan ( Ganzi City), 12.VI.2021, No. 50588-1-1, on Salix, coll. T.Y. Liu and S. Xu ; one ap. viv. fem., Hebei, 6.V.2021, No. 49999-2-1, on Salix, coll. G.X. Qiao.

Diagnosis.

Antennae 5-segmented (Fig. 5C), PT 1.95-2.39 × Ant. Vb; URS long wedge-shaped (Fig. 5D), 1.15-1.36 × HT II; ABD TERG VIII with short rectangular supra-caudal process (Fig. 5G); SIPH cylindrical not swollen (Fig. 5H); cauda short tongue-shaped (Fig. 5I), with four or five setae (Matsumura 1918; Miyazaki 1971; Zhang and Zhong 1990).

Comment.

The species resembles Cavariella digitata and Cavariella theobaldi in SIPH being long and cylindrical, and not swollen, supra-caudal process short. But the species differs from C. digitata as follows: URS long and wedge-shaped, distinctly longer than HT II, 1.15-1.36 × HT II ( C. digitata: URS wedge-shaped, 1.00-1.10 × HT II); supra-caudal process rectangular, blunt with two setae distally ( C. digitata: supra-caudal process triangular, with two setae distally and 1-3 short setae basally); PT 3.00 × Ant. Vb ( C. digitata: PT 1.25-1.45 × Ant. Vb). The species differs from C. theobaldi as follows: antennae 5-segmented ( C. theobaldi: antennae 6-segmented); URS long wedge-shaped, longer than cauda ( C. theobaldi: URS wedge-shaped, shorter than cauda) (Miyazaki 1971).

Biology.

The species feeds on tender tips of Apiaceae ( Angelica, Heracleum, Pastinaca, Sium) (Miyazaki 1971; Blackman and Eastop 2022). In China, the species feeds on Salix (Fig. 32E), Heracleum, and Angelica . Hence, the species may be heteroecious holocyclic; Salix is the primary host plant and Apiaceae is the secondary host plant.

Distribution.

China (Hebei, Sichuan), Japan, Kazakhstan, Korea, Russia.