Valid Names Results

Xenolecanium ryoichii Hodgson, 2022 (Coccidae: Xenolecanium)

Xenolecanium ryoichii Hodgson 2022: 458. Type data: MALAYSIA: Kuala Lumpur, on Eugenia grandiflora, 4/30/1944, by R. Takahashi. Holotype, female, by present designation Type depository: London: The Natural History Museum, England, UK; accepted valid name Notes: Paratypes designated in Hodgson (2022), (one slide with 11 adf + 2 x 2nd/3rd-instar f; in fairly good condition, but older specimens parasitized (NHM); one specimen almost completed moulting; other slide with 10 adf + 1 imm f + 2 x ?2nd instar males; adult females in fairly good condition, immature stages in poor condition, NHM). Illustr.

Families: 1 | Genera: 1

Countries: 1

Hodgso2022: pp.465 ( Adult (F) ) [Xenolecanium and Takahashilecanium species]

Systematics: Takahashi had originally collected two lots of material that he named X. eugeniae Takahashi, the material (which he designated type) from Kuala Lumpur and the other from the Riau Islands, near Singapore. The latter material was studied by Kondo et al. (2005), who named it X. takahashii Kondo who determined that X. eugeniae was a manuscript name and a nomen nudum. Adult female Xenolecanium ryoichii . are very similar to those of X. takahashii, sharing with them: (i) blade-like marginal setae (although many on X. ryoichii are also fimbriate), and (ii) a crenulated margin. However, they differ in that X. ryoichii has two types of dorsal pore of which one is considered to represent preopercular pores, forming a more or less broad medio-lateral band from the anal plates to anterior to the mouthparts. These pores are considered to be absent on X. takahashii. (Hodgson, 2022)
Structure: Slide-mounted material. Body oval, 4.1–4.2 mm long, 3.3–3.4 mm wide. Stigmatic clefts obviously indented; anal cleft about 1/5–1/6th total body length, cleft probably fused. (Hodgson, 2022)
General Remarks: Detailed description and illustration in Hodgson, 2022)