Newsteadia Green, 1902

Zheng, Xinyi, San, Wu, an & Xing, Jichun, 2023, Description of two new species of Newsteadia Green (Hemiptera: Coccomorpha: Ortheziidae) from China with a key to Chinese species, Zoological Systematics 48 (3), pp. 206-226 : 207

Genus Newsteadia Green, 1902

Orthezia (Newsteadia) Green, 1902: 284–285 . Type species: Coccus floccosus De Geer, 1778 by monotypy and original designation. Newsteadia Green, 1902 ; Newstead, 1903: 241 (change in status).

Transnewsteadia Richard, 1990: 223–230 (junior synonym).

Diagnosis. Adult female. Middorsal wax plates protruding forwards. Antennae with variabe numbers of segments (3– 7) and first or first and second segments obviously larger than the remaining segments. Legs developed, with trochanter fused to femur and tibia fused to tarsus, each leg with a tibial sensorium. Labium 2-segmented. Abdominal spiracles numbering 5 pairs. Absence of spine bands within the ovisac band on the venter. Tubular ducts present on dorsum between the wax spines ( Kozár, 2004; Vea & Grimaldi, 2012).

Adult male. Head with developed mid-cranial ridge and ventral midcranial ridge bifurcated. Compound eyes each with 30–75 ommatidia. Antennae each 9- or 10-segmented. Prosternum with a triangular sclerotized area. Metathorax with a small metapostnotum in the middle. Fore wing shape rounded with costal thickening, subcosta, radius, cubitus anterior and anal fold. Hamulohalteres absent or present. Trochanter and femur fused or separate. Apex of aedeagus wide at tip. Body with minute pores but lacking locular pores.

Identification key to adult females of Newsteadia species known in China (based on Kozár (2004) and Zheng & Xing (2021)).

1. Antenna 7-segmented.................................................................................................................................................... N. fanjingensis

- Antenna 6-segmented........................................................................................................................................................................... 2

2. Antenna with a subapical seta ..............................................................................................................................................................3

- Antenna without a subapical seta ......................................................................................................................................................... 6

3. Legs each with a sensory seta anterior to tibial sensorium...................................................................................................... N. shiaui

- Legs without sensory seta anterior to tibial sensorium.........................................................................................................................4

4. Thoracic spiracles each with 15–22 quadrilocular pores.............................................................. N. multipori Zheng & Wu , sp. nov.

- Thoracic spiracles each with 0–3 quadrilocular pores.......................................................................................................................... 5

5. Mid-dorsal clusters 7bm, 7cm, 7dm, 7em and 7fm divided medially, mid-dorsal cluster 5 fused medially; thoracic spiracles without quadrilocular pores; trochanter-femur with 3 sensory pores on each surface....................................................................... N. pinicola

- Mid-dorsal clusters 7bm, 7cm, 7dm, 7em and 7fm fused medially; mid-dorsal cluster 5 divided medially; thoracic spiracles with 0– 3 quadrilocular pores; trochanter-femur with 4 sensory pores on each surface................... N. chebalingensis Zheng & Wu , sp. nov.

6. Ovisac band with a row of quadrilocular pores along anterior edge ............................................................................... N. mauritiana

- Ovisac band without any row of quadrilocular pores along anterior edge ......................................................................... N. chihpena

Identification key to described adult males of Newsteadia species (based on Vea (2014) and Zheng & Xing (2021)).

1. Hamulohalteres present; antenna 10 segmented................................................................................... N. fanjingensis Zheng & Xing

- Hamulohalteres absent; antenna 9 segmented ....................................................................................................................................2

2. Trochanter and femur separated; each fore wing with 3 alar setae................................................................ N. americana Morrison

- Trochanter and femur fused; each fore wing with 1 or 2 alar setae ....................................................................................................3

3. Each fore wing with 1 alar seta; with 15 circular sensoria along radius........................................................... N. floccosa (De Geer)

- Each fore wing with 2 alar setae; with 8 circular sensoria along radius..................................... N. multipori Zheng & Wu , sp. nov.