Valid Names Results

Myrtaspis syzygii (Takagi, 1985) (Diaspididae: Myrtaspis)

Nomenclatural History

• Chionaspis syzygii Takagi 1985: 9-11. Type data: INDIA: Uttar Pradesh, Dehra Dun, on Syzygium jambos, on Syzygium jambos, 02/11/1978; NEPAL: Lumbini Zone, Butwal, on Syzgium cumini, 13/12/1983. Syntypes, unknown, Type depository: Calcutta: National Zoological Collection, Zoological Survey of India, India; Sapporo: Entomological Institute, Faculty of Agriculture, Hokkaido University, Japan; accepted valid name Illustr.
• Myrtaspis syzygii (Takagi, 1985); Takagi 1999: 148. change of combination

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 2

Geographic Distribution

Keys

Remarks

• Systematics: This species is excluded from Chionaspis, having 5-segmented antennae in the first instar. Adult female with weakly zygotic median lobes, and subequal size to and nearly of same shape as lobules of well-developed 2nd and 3rd lobes. These characters of the pygidial lobes may justify the transference of this species to Myrtaspis. M. syzygii differs from M. marginalis mainly in the lateral macroducts occurring as anteriorly as the pro- or mesothorax, in lacking derm swellings and derm pockets between the antennae, and in the head and thoracic segments remaining wholly membranous at full growth (Takagi, 1999).
• Structure: Adult female. Median trullae small, as large as or a little larger than mesal lobules of second and third trullae, divergent, basally yoked together through a sclerotized derm band. Submedian macroducts occurring on abd III–VI; lateral macroducts on msth to abd III. (Takagi, 2020) The second instar males from India have four modified macroducts on each side of the abdomen (Takagi, 1985). In the present study, eight individuals of this stage were mounted from Sample 1. They differed from the Indian form in having six modified macroducts on each side of the abdomen. The taxonomic evaluation of this difference requires further material from intermediate areas. However, Takagi (2019) showed a remarkable variation in the number of modified macroducts in individuals of the second instar male mounted from a single sample of Chionaspis pogonantherae Takagi.
• Biology: Takagi (2020)Sample 1 with females and males occurring on leaves, lower surface; females also on petioles. Sample 2 with females occurring on leaves, upper surface, in the narrow groove running along the midrib; male scales on leaves, lower surface.
• General Remarks: Detailed description and illustration by Takagi (1985).

Illustrations

Citations