Valid Names Results

Ferrisia san Tanaka, 2025 (Pseudococcidae: Ferrisia)

Nomenclatural History

• Ferrisia san Tanaka 2025: 294. Type data: VIETNAM: Ho Chi Minh City, Thu Duc District, Ward Linh Trung, Block 6, Nong Lam University, on Manihot esculenta, 8/7/2016, coll. Hirotaka Tanaka. Holotype, female, by original designation Type depository: Ho Chi Minh City: Nong Lam University, Ho Chi Minh City, Vietnam; accepted valid name Notes: Paratypes: same data as holotype (NLUV). Illustr.

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Geographic Distribution

Keys

• TanakaLe2025: pp.298 ( Adult (F) ) [Species of Ferrisia based on adult females]

Remarks

• Systematics: The new species is similar to Ferrisia dasylirii, but differs in lacking clusters of small ventral oral collar tubular ducts in the submarginal area of the venter and small ventral oral collar ventral tubular ducts present in the submarginal area of the head and thorax. The new species can be clearly distinguished from the other Ferrisia species known in Vietnam, F. virgata, by the absence of clusters of small oral collar tubular ducts in the posterior submarginal area of the venter, and by the presence of dorsal enlarged ducts associated with discoidal pores that either contact the outer margin of the sclerotized area or project beyond the sclerotized margin surrounding each duct opening. (Tanaka & Le, 2025)
  In the key by Parsa et al. (2012), all Ferrisia specimens bearing multilocular disc pores on abdominal segment VI of the venter would key out as true F. virgata, but F. san sp. nov. also has these pores on the venter of abdominal segment VI and thus would be erroneously identified as F. virgata. Thus, it is highly likely that misidentifications of this nature exist elsewhere in Southeast Asia. Therefore, Ferrisia species infesting cassava in the region require thorough taxonomic re-examination. (Tanaka & Le, 2025)
• Structure: Slide-mounted adult female: Body elongate-oval, 3.1–3.5 mm long and 1.3–1.7 mm wide; derm membranous; segmentation discernible but not strongly developed. Anal lobes distinct; dorsal surface of each lobe well-sclerotized, ventral surface bearing long apical seta, 260–296 μm long; anal lobe bar absent. Antennae 469–673 μm long, 8-segmented, with numerous flagellate setae; subapical segment bearing one fleshy seta, apical segment with three fleshy setae. Eye located at body margin, not associated with discoidal pores. Legs well-developed, covered with numerous flagellate setae; hind trochanter + femur 490–557 μm long; hind tibia + tarsus 518–640 μm long; claw 30–40 μm long, lacking denticle. (Tanaka & Le, 2025)
• General Remarks: Detailed description and illustrations by Tanaka & Le (2025).

Illustrations

Citations