Cavariella pastinacae (Linnaeus, 1758)

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 pastinacae (Linnaeus, 1758)

Figs 21 , 35B

Aphis pastinacae Linnaeus, 1758: 451.

Specimens examined.

One ap. viv. fem. and one ala. viv. fem., Mongolia, 11.VII.2010, No. 24728, on Apiaceae , coll. L.Y. Jiang ; two ap. viv. fems., Mongolia, 15.VII.2010, No. 24756, on Apiaceae , coll. L.Y. Jiang ; one ap. viv. fem. (slide) and one ap. viv. fem. (COI: OP956153 ), China: Xinjiang, 2.VII.2022, No. 55639, on Apiaceae , coll. Y. Xu.

Diagnosis.

Antennae 6-segmented (Fig. 21C ), PT> 3.46 × Ant. VIb; ABD TERG VIII with short rectangular supra-caudal process (Fig. 21I ); URS wedge-shaped (Fig. 21D ), 1.07-1.15 × HT II; SIPH clavate and swollen at middle (Fig. 21H ); cauda broadly tongue-shaped (Fig. 21J ), with 6-8 setae.

Comment.

The species is first recorded in China. The species resembles Cavariella angelicae , but differs as follows: antennae 6-segmented, PT 3.46 × Ant. VIb ( C. angelicae : antennae 5-segmented, PT 1.95-2.39 × Ant. Vb); SIPH clavate, swollen at middle and constricted distally, with a subapical annular incision ( C. angelicae : SIPH cylindrical, no swollen, without annular incision); Ant. III-IV with 46, two circular secondary rhinaria in alatae ( C. angelicae : only Ant. III with 43 circular secondary rhinaria in alatae).

Biology.

Primary host plant Salix ; secondary host plant Apiaceae including Heracleum , Pastinaca , Angelica , Carum , Chaerophyllum , Cicuta , Foeniculum and Torilis ( Blackman and Eastop 2022). The species feeds on tender tips (Fig. 35B ).

Distribution.

China (Xinjiang), Argentina, Australia, Europe, Mongolia, North America ( Blackman and Eastop 2022).

Figures

Figure 21. Cavariella pastinacae (Linnaeus). Apterous viviparous female: A dorsal view of body B dorsal view of head C antenna D ultimate rostral segment E mesosternal furca F second hind tarsal segment G sculptures of abdomen H siphunculus I supra-caudal process on abdominal tergite VIII J cauda. Alate viviparous female: K dorsal view of body L antenna M siphunculus N supra-caudal process on abdominal tergite VIII O cauda. Scale bars: 0.10 mm.

Figure 35. The ecological habitat photographs of Cavariella in field. A the apterae and nymphs of Cavariella nipponica Takahashi feeding on the underside leaves of Salix B one aptera of Cavariella pastinacae (Linnaeus) feeding on tender stem of Apiaceae C the apterae and nymphs of Cavariella pustula Essig feeding on tender stem of Salix D the apterae and nymphs of Cavariella salicicola (Matsumura) feeding on tender stem of Salix.