Coccus viridis ( Green, 1889 )

Choi, Jinyeong, Soysouvanh, Pheophanh, Lee, Seunghwan & Hong, Ki-Jeong, 2018, Review of the family Coccidae (Hemiptera: Coccomorpha) in Laos, Zootaxa 4460 (1), pp. 1-62 : 33

Coccus viridis ( Green, 1889)

( Figs 28 , 29 )

Lecanium viride Green, 1889: 248 .

Diagnosis. Dorsum with setae cylindrical, blunt apically ( Fig. 29A ); tubular ducts absent; duct tubercles present ( Fig. 29F ); and preopercular pores present anterior to anal plates ( Fig. 29E ). Marginal setae short, mostly with fimbriate apices ( Figs 28C , 29I ). Venter with multilocular disc-pores each usually with 7 loculi ( Fig. 29H ); tubular ducts each with a broad inner ductule, frequent in medial area between mesocoxae, between metacoxae, and occasionally a few present around each procoxa ( Figs 28E , 29L ); pregenital setae numbering 3 pairs; antenna 7 segmented ( Figs 28D , 29O ); and legs each with a tibio-tarsal articulatory sclerosis ( Figs 28F , 29M ) (partially adopted from Williams & Watson 1990).

Material examined. 5 ♀♀, LAOS, Pakxan Dist., Bolikhamsai Prov., 30.iv.2015, coll. J.Y. Choi, on Lagerstroemia sp. ( Lythraceae ); 17 ♀♀, Bolikhanh Dist., Bolikhamsai Prov., 4.v.2015, on Citrus sp. ( Rutaceae ) (same collector); 2 ♀♀, Paksong Dist., Champasak Prov., 16.i.2017, coll. P.P. Soysouvanh, on Coffea sp. ( Rubiaceae ).

Hosts. Polyphagous. According to García Morales et al. (2016), C. viridis has been recorded from plants belonging to 144 genera in 61 families. In Laos, it has been recorded on Ficus sp. ( Moraceae ) ( Suh & Bombay 2015).

Distribution. All zoogeographical regions; Oriental Region ( India, Indonesia, Laos, Malaysia, Myanmar, Philippines, Sri Lanka, Taiwan, Thailand and Vietnam) ( Suh & Bombay 2015; García Morales et al. 2016).

Economic importance. Williams & Watson (1990) recorded C. viridis as an economically important pest of citrus and coffee in the tropical South Pacific; infestations have been reported also from Florida ( Fredrick 1943), Kenya and Papua New Guinea ( Murphy 1991).

Remarks. Among coffee pests in Laos, C. viridis is similar to C. celatus De Lotto. For a comparison, see the remarks section for C. celatus above.

Figures

FIGURE 28. Coccus viridis (Green, 1889). A, population of females in life; B, slide-mounted adult female; C, marginal setae; D, antenna; E, ventral tubular ducts between mesocoxae; F, leg (Arrow indicates a tibio-tarsal articulatory sclerosis). Scale lines for B = 0.5 mm; C = 50 µm; D, F = 100 µm; E = 10 µm.

FIGURE 29. Coccus viridis (Green, 1889), adult female, from Williams & Watson (1990). A, dorsal seta; B, dorsal microduct; C, stigmatic spines; D, simple pore; E, preopercular pore; F, dorsal tubercle; G, anal plates; H, multilocular disc-pore; I, marginal seta; J, ventral microduct; K, anterior and lateral marginal setae on anogenital fold; L, ventral tubular duct; M, leg; N, spiracular disc-pore; O, antenna.