Unaspis mediforma ( Chen, 1983 )

Niu, Minmin & Feng, Jinian, 2019, Two new species of the genus Unaspis MacGillivray, 1921 (Hemiptera: Coccomorpha: Diaspididae) from China, Zootaxa 4555 (4), pp. 573-580 : 574

Unaspis mediforma ( Chen, 1983)

Material studied: Syntypes of this species were deposited at Chengdu, Plant Protection Research Institute, Sichuan Academy of Agricultural Sciences , but they are unavailable and probably lost; for this reason the diagnosis below is based solely on the description and illustration by Chen (1983) .

Adult female diagnosis (based on Chen, 1983): Body fusiform, widest at abdominal segment I. Antennae tuberculate, each bearing 3 long thick setae and 2 short slender setae. Anterior spiracles each with 5–8 parastigmatic pores; posterior spiracles each with 2–4 parastigmatic pores. Lateral ducts on dorsum scattered from the mesothorax to abdominal segment III. Conical duct tubercles present on ventral submargin of metathorax and the abdominal segments I–II.

Pygidium relatively straight sided, with 3 pairs of well-developed lobes. Median lobes with basal parts of median margins linked and inner and outer margins serrate. Second and third lobes well developed but much smaller than median lobes, each deeply bilobed, with outer lobule smaller than inner lobule. Gland spines on pygidium present singly, each with apex split 2 or 3 ways.

Marginal macroducts larger than dorsal ducts, absent from between median lobes; numbering 7 on each side, with 1 between median and second lobes, 1 between second and third lobes, 1 between lobules of third lobe, 2 on segment V and 2 on segment IV. Dorsal ducts scattered, numbering 62–67 on whole pygidium. Perivulvar pores present in 5 groups, with 8–12 in median group, 9–23 in each laterocephalic group, and 9–13 in each laterocaudal group.