Cavariella gilgiana Zhang, Chen, Zhong & Li, 1999

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

publication ID

https://dx.doi.org/10.3897/zookeys.1169.98552

publication LSID

lsid:zoobank.org:pub:2071042F-2193-4F9B-9E10-22CDF27804AD

persistent identifier

https://treatment.plazi.org/id/4651BE6F-2911-5156-9126-A5D1054BA3FB

treatment provided by

ZooKeys by Pensoft

scientific name

Cavariella gilgiana Zhang, Chen, Zhong & Li, 1999
status

 

Cavariella gilgiana Zhang, Chen, Zhong & Li, 1999 View in CoL

Figs 10 View Figure 10 , 11 View Figure 11 , 32H View Figure 32

Cavariella gilgiana Zhang, Chen, Zhong & Li, 1999: 370.

Types examined.

Holotype: one ap. viv. fem., China: Ningxia (Yinchuan City), 10.VI.1976, No. Y1156-1-1-2, on Salix , coll. Unknown. Paratypes: four ap. viv. fems., with the same collection data as holotype ( Zhang et al 1999).

Other specimens examined.

Five ap. viv. fems. (slides) and one ap. viv. fem. (COI: OP956147 View Materials ), Sichuan (Ganzi City), 15.VI.2021, No. 51429, on Salix , coll. T.Y. Liu and S. Xu ; six ap. viv. fems., Qinghai (Huangyuan County), 9.VI.1997, No. 11400, on Salix , coll. X.L. Chen.

Diagnosis.

Body dorsum covered with densely papillate tubercles (Figs 10F View Figure 10 , 11F, H View Figure 11 ); antennae 5-segmented (Figs 10B View Figure 10 , 11B View Figure 11 ), PT short, 0.36-0.40 × Ant. Vb; dorsal setae of body long, thick, and capitate (Figs 10E View Figure 10 , 11G View Figure 11 ); ABD TERG VIII produced caudad into triangular spinal supra-caudal process (Figs 10H View Figure 10 , 11J View Figure 11 ); cauda pentagonal, constricted at base and distal part (Figs 10I View Figure 10 , 11K View Figure 11 ) ( Zhang et al. 1999).

Re-description.

Apterous viviparous females: body oval, pale yellowish in life (Fig. 32H View Figure 32 ).

Mounted specimens. Body pale, unsclerotized; Ant. V, distal part of rostrum, HT II brown, other parts pale in color. Body dorsum covered with densely papillate tubercles (Fig. 11A View Figure 11 ). See Table 2 View Table 2 for general measurements.

Head. Ocular tubercles indistinct. Dorsum of head covered with semicircular and wavy sculptures on median area, marginal area with papillate tubercles (Figs 10A View Figure 10 , 11C View Figure 11 ). Frons convex (Figs 10A View Figure 10 , 11C View Figure 11 ). Dorsal setae of head long, thick, and capitate, with distinct setal tubercles. Head with one pair of cephalic setae, one or two pairs of dorsal setae between antennae, two pairs of dorsal setae between compound eyes arranged transversely. Antennae 5-segmented, Ant. I and II slightly imbricated at inner side, Ant. III-V with slight imbrications (Figs 10B View Figure 10 , 11B View Figure 11 ). Antennal setae long, thick, and blunt or capitate on Ant. I and II, 0.02-0.05 mm, short and blunt on Ant. III-V. Ant. I-V each with 3 or 4, 2 or 3, 2 or 3, 1 or 2, 2 or 3+0 setae; apex of PT with two or three setae. Primary rhinaria ciliated. Rostrum reaching mid-coxae; URS wedge-shaped (Figs 10C View Figure 10 , 11E View Figure 11 ), with two pairs of primary setae, without accessory setae.

Thorax. Thoracic nota with circular and semicircular sculptures on spino-pleural areas, marginal areas with papillate tubercles. Mesosternal furca separated (Figs 10D View Figure 10 , 11D View Figure 11 ). Dorsal setae of thorax long, thick and capitate; pronotum with two pairs of spinal setae, arranged anteriorly and posteriorly, one pair of pleural and one pair of marginal setae; mesonotum with 5-7 spino-pleural setae and two pairs of marginal setae; metanotum with 2-4 spino-pleural setae and two pairs of marginal setae. Legs short. Femora thick and short. Outsides of femora and tibiae imbricated. Setae on legs long, thick and capitate. First tarsal chaetotaxy: 3, 2, 2. Second tarsal segments with imbrications.

Abdomen. Abdominal tergites with circular and semicircular sculptures on spino-pleural areas, marginal areas with papillate tubercles (Figs 10F View Figure 10 , 11F, H View Figure 11 ). ABD TERG VIII produced caudad into triangular spinal supra-caudal process and covered with papillate tubercles, constricted and blunt at distal part, exceeding to the end of cauda (Figs 10H View Figure 10 , 11J View Figure 11 ). Dorsal setae of abdomen long, thick, and capitate (Figs 10E View Figure 10 , 11J View Figure 11 ); abdominal tergites I-V each with two or three pairs of spino-pleural setae and one or two pairs of marginal setae, tergite VI with one pair of spinal and one pair of marginal setae, tergite VII with one pair of spinal, pleural and marginal setae, respectively; tergite VIII with two setae at apex and 2-4 marginal setae of supra-caudal process. Spiracles reniform and open. SIPH long clavate, basal 1/2 cylindrical and then gradually swollen towards apical part but constricted at apex (Figs 10G View Figure 10 , 11I View Figure 11 ); basal part smooth, distal part with imbrications, with flange. Cauda pentagonal (Figs 10I View Figure 10 , 11K View Figure 11 ), constricted at base and distal part, with spinulose imbrications and 2-5 setae. Anal plate semicircular, spinulose, with 8-12 setae. Genital plate transversely oval, with sparse spinules in transverse rows, with two anterior setae and six or seven setae along the posterior margin.

Comment.

The species was first described by Zhang et al. (1999), but the description was brief and incomplete. So, a detailed description, character illustration, ecological photographs, and DNA barcoding are supplied in this work.

Biology.

The species feeds on young leaves of Salix (Fig. 32H View Figure 32 ).

Distribution.

China (Ningxia, Sichuan, Qinghai).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Aphididae

SubFamily

Aphidinae

Tribe

Macrosiphini

Genus

Cavariella

SubGenus

Cavariella

Loc

Cavariella gilgiana Zhang, Chen, Zhong & Li, 1999

Xu, Ying, Chen, Jing, Jiang, Li-Yun & Qiao, Ge-Xia 2023
2023
Loc

Cavariella gilgiana

Zhang, Chen, Zhong & Li 1999
1999