Valid Names Results

Phenacoccus montevidensis Pacheco da Silva & Kaydan, 2020 (Pseudococcidae: Phenacoccus)

Nomenclatural History

• Phenacoccus montevidensis Pacheco da Silva & Kaydan 2020: 511. Type data: URUGUAY: Montevideo (34°53’27.4”S 56°07’32.8”W), on Helminthotheca echioides, 9/18/2018, by V.C. Pacheco da Silva. Holotype, female, by original designation Type depository: Montevideo: Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay.; accepted valid name Illustr.

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Geographic Distribution

Keys

• PachecKaBa2020: pp.504-505 ( Adult (F) ) [Pseudococcidae in Uruguay]

Remarks

• Systematics: GenBank accession number: MW246247 for COI and MW251837 for 28S. Phenacoccus montevidensis. most closely resembles Ph. sisymbriifolium in having: (i) circulus present, (ii) dorsal multilocular disc pores restricted to margins of abdominal segments, (iii) ventral multilocular pores on the abdomen, reaching to margin of body; and (iv) quinquelocular pores present. However, Ph. montevidensis. differs from Ph. sisymbriifolium in having dorsal multilocular disc pores in the mid-region of abdominal segments VI and VII, and some dorsal lanceolate setae each with a protrusion on the apical region. In addition, the circulus in Ph. montevidensis is oval, whereas that in Ph. sisymbriifolium is anvil-shaped. Phenacoccus montevidensis is also close to Ph. manihoti, but differs from this species in having ventral multilocular disc pores on the venter that reach the margin of the body on at least a few abdominal segments, which Ph. manihoti does not have. In addition, translucent pores are present on the hind tibiae in Ph. montevidensis whereas they are absent in Ph. manihoti. (Pacheco da Silva, et al., 2020)
• Structure: Appearance in life. Body elongate, yellowish, sparsely covered with white mealy wax. Slide mounted adult female body oval, 1.90–2.25 mm long, 1.12–1.40 mm wide. Eyes situated on margins, each 50.0–67.5 wide. Antenna with 9 segments. Claw with denticle, digitules capitate. (Pacheco da Silva, et al., 2020) Phenacoccus montevidensis is characterized by the following combination of features: (i) circulus present; (ii) dorsal multilocular disc pores on the margins of a few abdominal segments and in the middle region of abdominal segments VII, or VI and VII; (iii) ventral multilocular pores in the abdomen, reaching to margin of body; (iv) quinquelocular pores present; and (v) some dorsal lanceolate setae each with a protrusion in the apical region. (Pacheco da Silva, et al., 2020)
• General Remarks: Detailed description and illustration in Pacheco da Silva, et al., 2020.

Illustrations

Citations