Review of the family Coccidae (Hemiptera: Coccomorpha) in Laos
Choi, Jinyeong
Soysouvanh, Pheophanh
Lee, Seunghwan
Hong, Ki-Jeong
Zootaxa
2018
2018-08-17
4460
1
1
62
5SVQ
536010
Williams & Watson, 1990
Williams & WatsOn
1990
[238,728,548,574]
Insecta
Coccidae
Milviscutulus
GBIF
Animalia
Hemiptera
41
42
Arthropoda
genus
Type species: Lecanium mangiferae Green, 1889, by original designation.
Diagnosis.Dorsum with anal plates together kite-shaped, each plate with anterolateral margin over 1.7 times as long as posterolateral margin ( Figs 37D, 38E); dorsal setae clavate or flagellate ( Fig. 38F); tubular ducts absent; duct tubercles present or absent ( Fig. 38D); and preopercular pores present ( Fig. 38C). Marginal setae with pointed or fimbriate apices ( Fig. 38M). Stigmatic clefts small, each containing 3 stigmatic spines ( Fig. 38M). Venter with multilocular disc-pores each with 7–10 loculi ( Fig. 38K); ventral tubular ducts of 2 types (type I: each with a broad inner ductule; type II: each with a narrow inner ductule) ( Figs 37C, 38H); antenna 6 to 8 segmented, usually with 7 segments ( Fig. 38P); legs with tibio-tarsal articulatory scleroses ( Fig. 38J) ( Williams & Watson 1990; Hodgson 1994).
Remarks. Milviscutuluscontains 4 described species, most of which are confined to Indonesia, Fiji, PapuaNew Guinea, Solomon Islandsand WesternSamoain the Orientaland Australian regions, except for one tropicopolitan species, M. mangiferae. The genus is similar to Protopulvinaria, but is easily differentiated from the latter by the distribution of ventral tubular ducts which are scarce or absent on the head and prothorax; in contrast, Protopulvinariahas abundant ventral tubular ducts in these areas ( Williams & Watson 1990; Hodgson 1994).