Valid Names Results
Fragorbis Hardy & Gullan, 2007 (
Eriococcidae)
Nomenclatural History
- Fragorbis
Hardy & Gullan
2007: 108-120.
.
accepted valid name
Remarks
- Systematics: Adult females of species of Fragorbis have small stout legs, no anal lobes, and strong vulvar apophyses. The single most diagnostic feature of the group is the incomplete or fragmented anal ring having only a few small pores near the bases of the ring setae. The anal ring is also incomplete or fragmented in Phacelococcus, but if the ring is dorsal, it is interrupted anterodorsally in Phacelococcus, whereas in Fragorbis the anal ring is intact anterodorsally and open posteroventrally. In addition, in Phacelococcus the anal ring pores are large and occur both around the bases of the anal ring setae and in areas between setae. Fragorbis also differs from Phacelococcus in the following ways: (1) anal lobes completely absent; (2) both lateral and posterior vulvar apophyses strong and conspicuous; (3) multilocular disc pores not arranged in ventral clusters;
(4) legs stout, length of posterior margin of hind femorasubequal to or shorter than length of hind coxa; (5) hind legs
much larger than fore or mid legs; (6) bilocular pores absent; and (7) microtubular ducts absent. A number of features of
the adult females suggest a close relationship between Fragorbis and Subcorticoccus, a genus not included in the phylogenetic work of Cook and Gullan (2004). These shared features are: (1) dorsal microtubular ducts absent; (2) legs reduced; (3) anal ring atrophied and not invaginated; (4) anal lobes absent; and (5) marginal setal fringe absent. Subcorticoccus differs from Fragorbis in the following: (1) hind legs approximately same size as fore and mid legs; (2) anal ring simple and complete, with a single pair of ring setae and no ring pores; and (3) a conspicuous longitudinal band of microtrichia on head.
- Structure: Adult female: Body outline ovate to circular. Eyes marginal. Antennae 3- to 6-segmented. Frontal (interantennal) lobes present or absent. Labium composed of 2 fused segments, with 5 pairs of setae: 3 pairs on ventral surface, 1 apical pair of setae, 1 pair on dorsal surface. Anterior extensions of tentorial box present or absent. Legs reduced; hind leg always much larger than fore or mid leg. Claw stout and slightly recurved. Anal opening either apical or slightly dorsal. Anal ring incomplete, either open posteroventrally or divided into a number of fragments; anal ring pores small and few, adjacent to ring setae; with 6–10 anal ring setae. Anal lobes absent. A pair of caudal setae present, longer than other setae on margin or dorsum. Lateral and posteromedial vulvar apophyses strong. Dorsal derm either evenly membranous or with central sclerotic disc. Macrotubular ducts with distinct oral rims; always present dorsally, present or absent ventrally. Microtubular ducts absent. Dorsal setae small (5.20 mm long), robust, tapering to acute apex; arranged in transverse bands across each segment; ventral setae 8.15 mm long; in a transverse band across each abdominal segment, scattered along margin and submargin, a few medial of each coxa and between antennae. Multilocular disc pores all quinquelocular; present or absent dorsally, always present ventrally.(Hardy & Gullan, 2007)
- Biology: Females of all species of Fragorbis are small and live crypically on eucalypts, either in blister-like galls under or on the surface of bark, or possibly in aborted fruits.
- General Remarks: Detailed description and illustrations in Hardy & Gullan (2007).
Keys
- HardyGu2007: pp.108
(
Adult (F)
)
[Key to the adult females of genera of felt scales on Eucalyptus and Corymbia]
Associated References
- HardyBeGu2011:
host, taxonomy, pp. 498
- HardyGu2007:
description, host, illustration, taxonomy, pp. 106-120
- HardyGu2010:
host, pp. 2
- Kozar2009:
distribution, host, taxonomy, pp. 112
5 Species
