Valid Names Results
Neocoelostoma Hempel, 1932 (
Monophlebidae)
Nomenclatural History
- Neocoelostoma
Hempel
1932: 310.
Type species: Neocoelostoma xerophila Hempel
by monotypy and original designation
.
accepted valid name
Remarks
- Systematics: Hempel (1932) noted that this genus is related to Coelostomidia in the non-chitinized abdominal apex of the larva, but differs from it in the presence of two pairs of terminal setae on abdomen of the larva.
In Hodgson & Hardy, 2013, the South American Neocoelostoma and Nautococcus formed a clade sister to Monophlebidae, rather than forming a clade with the New Zealand members of Coelostomidiidae. To preserve the monophyly of Coelostomidiidae and Monophlebidae, Hodgson and Hardy suggested that these South American taxa could be treated as a separate family-level group, or Neocoelostoma could be transferred to Monophlebidae as was Nautococcus.
Foldi & Gullan, 2014 transferred Neocoelostoma to Monophlebidae, noting that the adult female escapes from the test to seek a sheltered position on the bark, and exudes a mass of cottony white filaments prior to ovipositing within. Related to this behaviour, the adult female of Neocoelostoma has well-developed legs, as typical in monophlebids.
Gavrilov-Zimin, 2018, resurrected the tribe Coelostomidiini within the family Margarodidae to place the genus Neocoelostoma in relation to other genera that he felt belonged in a subfamily of Callipappinae (Coelostomidia, Crambostoma, Eremostoma,Marchalina, Neocoelostoma, Paramoandesia and Protortonia)
- Structure: Adult female body broadly oval, posterior end rounded; derm membranous. Antenna 11 segmented, each segment with numerous setae. Eyespot situated lateral to antennal scape. Mouthparts absent. Legs well developed, each with a large apodeme and with setae on all segments; trochanter with 3 or 4 campaniform sensilla on each side; inner edges of tibia and tarsus with stout setae; claw stout and curved without a denticle. Third-instar (preadult) female.enclosed in a resinous test with a thin wall. Body almost round to ovoid; derm membranous except posterior end that has a large circular, strongly sclerotised, anal disc bearing scattered multilocular pores and setae. Antenna short, conical, 8 or 9 segmented. Eyespot located posterolateral to antennal scape. Mouthparts well developed; labium 3 segmented; basal segment narrow and difficult to discern. Legs considerably reduced, but each segment present; trochanter with 3 campaniform sensilla on each surface. (Foldi & Gullan, 2014)
- Biology: The life cycle of females of Neocoelostoma differs from that of Cryptokermes, Mimosicerya and Paracoelostoma in that the adult female is not retained within the test or exuviae of the preadult, as occurs in the other genera. In Neocoelostoma, the adult female escapes from the exuviae of the third-instar female via a circular opening at the anal end and then seeks a sheltered position on the bark where it exudes a mass of cottony white filaments prior to oviposition. Most stages live exposed on the trunk or branches. The fully-constructed test, enclosing the third-instar female, is up to 11 mm long and 8.5 mm wide, with an apical orifice about 2 mm in diameter. The test varies from light yellow to red-brown and has a rough texture on the outer surface, whereas the internal surface is smooth and coated with a thin layer of powdery white wax. Second-instar nymph similar to third-instar female but setae and pores less abundant. First-instar nymph elliptical; derm membranous apart from a large sclerotised anal disc at posterior end with anal opening and multilocular pores and setae. Antenna 6 segmented, all segments with hair-like setae; apical segment also with fleshy setae. (Foldi & Gullan, 2014)
- General Remarks: Description and definition by Hempel (1932). Detailed redescription in Foldi & Gullan, 2014.
Keys
- Foldi2020: pp.157
(
Adult (F)
)
[genera of Cryptokermesini]
- Gavril2018: pp.129.131
(
Adult (F)
)
[Genera of Coelostomidiini]
- FoldiGu2014: pp.11
(
)
[Key to genera of Cryptokermesini]
- Foldi2009: pp.26-27
(
)
[Genera of Coelostomidiidae in Neotrpical region]
Associated References
- BenDov2005a:
catalog, taxonomy, pp. 36
- Foldi2001a:
taxonomy, pp. 211
- Foldi2009:
taxonomy, pp. 26-27
- FoldiGu2014:
description, distribution, host, illustration, phylogenetics, structure, taxonomy, pp. 11
- FoldiGu2014:
description, distribution, host, illustration, structure, taxonomy, pp. 41-54
- Gavril2018:
key, pp. 129
- Hempel1932:
description, taxonomy, pp. 310-312
- HodgsoFo2005:
phylogeny, taxonomy, pp. 35-48
- Lizery1939:
catalog, taxonomy, pp. 174
- MorrisMo1966:
taxonomy, pp. 130
1 Species
