Platycoelostoma Morrison

Foldi, Imre, 2009, Archaeococcoid scale insects (Hemiptera: Coccoidea) from the tropical high mountains of the Andean Cordillera, South America, Zootaxa 2300, pp. 1-38 : 34

publication ID

https://doi.org/ 10.5281/zenodo.191685

DOI

https://doi.org/10.5281/zenodo.6217013

persistent identifier

https://treatment.plazi.org/id/C8140C4D-FF98-FF8D-FF41-FF5AFE6B2B25

treatment provided by

Plazi

scientific name

Platycoelostoma Morrison
status

 

Platycoelostoma Morrison View in CoL

Platycoelostoma Morrison View in CoL , in Morrison & Morrison, 1923: 34.

Type species: Coelostoma compressum Maskell, 1892 , by designation of Morrison in Morrison & Morrison, (1923) and by monotypy.

Generic diagnosis. Information on the adult females and immatures instars of Platycoelostoma compressa can be found in Gullan & Sjaarda (2001), Morales (1991) and Morrison & Morrison (1923).

Adult female (modified from Gullan & Sjaarda, 2001): body elongate-oval, 6.1–14 mm long, derm membranous, covered dorsally and ventrally with numerous multilocular pores and rather fewer hair-like setae; collared setae, hairs and spines absent. Multilocular pores mostly oval-elongate, rarely triangular or circular, present across all segments on both dorsum and venter, densest on abdomen; each pore with a large central area with 2–5 large inner loculi plus 6–16 outer loculi. Simple tubular pores on margin of posterior segments of abdomen present or absent. Hair-like setae scattered on head and thorax, and in rows across abdominal segments; longest setae ventromedially on head and thorax, and near coxae of legs. Eyepots submarginal, close to antennal base. Antennae 9 or 10 segmented; all segments with long hair-like setae; segments III to X also with fleshy setae; a campaniform sensillum present dorsally on segment II. Mouthparts atrophied. Legs well developed, trochanter with 4–7 campaniform sensilla on each side, and a long ventral trochanteral seta; tibia and tarsus with many short setae ventrally; tarsus distinctly curved; claw broad at base, tapering, long, curved, without a denticle; with 2 slender claw digitules reaching apex of claw. Thoracic spiracles each with 20–80 multilocular disc-pores in expanded atrium. Abdomen with 8 pairs of spiracles, each with multilocular pores in atrium, except poorly developed posterior pair which lacks atrial pores in P. compressa (Maskell) and P. tasmanicum Gullan & Sjaarda ; each spiracle elongate and divided into 3 distinct parts. Vulvar opening a transverse fissure, with 2 apodemes at each extremity. Cicatrices absent. Anal opening apical to subapical or ventral. Anal tube simple but sclerotised, lacking typical sclerotised ring at inner end, and without setae or pores.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Margarodidae

Loc

Platycoelostoma Morrison

Foldi, Imre 2009
2009
Loc

Platycoelostoma

Morrison 1923: 34
1923
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