Chionaspis wistariae Cooley

Suh, Soo-Jung, 2016, New records of Chionaspis armored scales (Hemiptera: Diaspididae) in Korea, Insecta Mundi 2016 (489), pp. 1-5 : 2-3

Chionaspis wistariae Cooley ( Figures 4–9 )

Chionaspis wistariae Cooley, 1897: 280-281 . Type data: Japan, on Wisteria sp.

Field Characters. Adult female cover white, flattened, broadly oyster-shell shaped; shed skins marginal, yellow to brown. Male cover white, elongate oval, with 3 longitudinal ridges weakly indicated, shed skin marginal, yellowish brown.

Slide-mounted Characters. Adult female with 3 pairs of lobes, median lobes lacking a pair of setae between them. In the bark-infesting form median lobes closely appressed medially from base to one-half of length of lobes, robust, with strongly protruding yoke, protruding beyond the second lobes, medial margins parallel basally, diverging apically, lateral margins diverging; third lobes represent by low prominences. In the leaf-infesting form median lobes deeply sunken into the apex of the pygidium, usually not protruding beyond the second lobes; second and third lobes well developed. Second lobes with paraphysis on mesial margin of medial lobule. Macroducts on pygidium about same size, with about 12 macroducts on each side of body on abdominal segments 5 to 6; with about 16 macroducts on submedial area of segments 3 to 6 each; with about 20 macroducts on submarginal area of segments 3 to 6 each. Gland spines absent on thorax, with about 21 on abdominal segments 1 to 4 each. Perivulvar pores in 5 groups, about 102 pores. Perispiracular pores with 3 loculi, anterior spiracles each with 14 to 16 pores, posterior spiracles each with 3 to 5 pores. Anal opening located at upper of pygidium. Antennae each with 1 conspicuous seta. Body elongated fusiform with prepygidial segments each slightly convex laterally. Primarily found on Wisteria Nuttall. (Fabaceae) .

Material Examined. Korea. GG: 476, Dongtanjiseong-ro, Yeongtong-gu, Suwon-si, 5 adult females, on Wisteria floribunda (Fabaceae) leaf, 23-vii-2007 (S.J. Suh); same data except for 11-ix-2008; same locality, 6 adult females, on Wisteria floribunda (Fabaceae) bark, 19-xi-2015 (S.J. Suh). CN: Chollipo Arboretum (187, Cheollipo 1-gil, Sowon-myeon, Taean-gun), 2 adult females, on Wisteria floribunda (Fabaceae) bark, 17-iv-2009 (S.J. Suh); Kohwun Garden (398-23, Singmurwon-gil, Cheongyang-eup, Cheongyang-gun), 3 adult females, same host, 20-x-2006 (S.J. Suh). GN: Geumjeongsan, 3 adult females, on Wisteria floribunda (Fabaceae) leaf, 28-ix-2006 (S.J. Suh); 386, Sumogwon-ro, Ibanseong-myeon, Jinju-si, same host, 20-v-2008 (S.J. Suh). JN: Gatbawi (166-1, Namnong-ro, Mokpo-si), 5 adult females, on Wisteria floribunda (Fabaceae) bark, 10-v-2007 (S.J. Suh); 33, Yongbong-ro, Buk-gu, Gwangju, 3 adult females, same host, 26-vii-2007 (S.J. Suh).

Hosts. Betulaceae : Alnus japonica (Thunb.). Fabaceae : Wisteria brachybotrys Sieb. et Zucc , W. floribunda , W. sinensis Sweet , Wisteria sp. Salicaceae : Salix babylonica L. ( García et al. 2015).

Distribution. China, Japan, Taiwan, Romania, USA ( García et al. 2015), * Korea.

Figures

Figures 1–9. Habitus and structures of two species of Chionaspis. 1–3: Chionaspis acer (Takagi and Kawai), 1) female, 2) pygidium (bark-infesting form), 3) anterior spiracle. 4–9: Chionaspis wistariae Cooley, 4–5) habitus, 6) female, 7) pygidium of leaf-infesting form with median lobes sunken into the apex of pygidium, 8) pygidium of bark-infesting form with median lobes appressed medially, 9) anterior spiracle.