A new genus and four new species of the scale insect family Eriococcidae (Hemiptera: Coccoidea) from the Austro-Oriental Region

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Three new eriococcid species from Italy are described and illustrated, namely Greenisca oreophila sp. n. off Poaceae, and Ovaticoccus exoticus sp. n. and O. agavacearum sp. n., off Agavaceae. Their morphological relationships are discussed and keys to Greenisca and Ovaticoccus species are provided, together with a key to the Eriococcidae genera so far known in Europe. A check-list of Italian Eriococcids is added.Dorsum. Dorsal setae dome shaped, of one size, each 6-7 μm long, some present on margin of last abdominal segments and on head and thorax, usually with a total of 2-9 on whole of dorsum (one specimen with 14). Small hair-like setae, each 5-8 μm long, scattered on abdominal segments. Macrotubular ducts scattered all over dorsum, each 12 μm long and 3 μm wide. Microtubular ducts short, sclerotized, each about 4 μm long, with oval orifice, scattered around margin. Quinquelocular pores as on venter, few, scattered on all segments. Anal ring on venter, weakly developed, sclerotized, 35 (33-36) μm wide, 20 (20-24) μm long, without pores, but with 6 setae, each 16 μm long, two of them stronger. Anal lobes not developed, unsclerotized, with 2 spine-like setae. Apical setae each 86 μm long. Cauda absent.Mounted first instar nymph ( fig.3, top left). Body of slide-mounted specimens oval, 540-550 μm long, 225-235 μm wide. Antennae six segmented, apical three segments with strong sensory setae as on adult female. Dorsum with dome-shaped spines of three sizes, largest on posterior abdominal segments. Usually with six spinose setae on each segment. Tubular ducts absent. Venter with transverse rows of six small hair-like setae on each abdominal segment; median setae longer than others. Cruciform pores present on posterior 3 or 4 abdominal segments, usually with one pore on each side of segments. With 1 pair of quinquelocular pores on each thoracic segment, 1 near each spiracle, plus 1 pair on frons. Stylet loop reaching the 3 rd abdominal segment, stylet length 840-860 μm. Anal ring with three sclerotized plates and with 6 spine-like setae.Ethymology. The species name agavacearum means "of the Agavaceae" after the family of the host plant on which this species was collected.Affinities. Adult female O. agavacearum are similar to those of O. agavium, but have macrotubular ducts also on head and thorax (only on the abdomen in O. agavium) and few cruciform pores, these restricted to the abdominal segments (numerous, and also on thorax in O. agavium). Moreover, the dome-shaped spines are very few and of one size (numerous, and of different size on O. agavium). The first-instar nymph of O. agavacearum is similar to that of O. agavium but the latter sometimes has two cruciform pores on each side of the last abdominal segments, the anal ring has only two sclerotized lateral plates and the setae are hair-like. (after Miller and McKenzie (1967) and Williams and Martin (2003), with additions and changes). Key to adult female OvaticoccusO. nativus (Parrott, 1900) is not included in the key; according to Miller and McKenzie (1967)...

Section: Introductionmentioning

confidence: 99%

A new species of Greenisca and two new species of Ovaticoccus from Italy (Hemiptera Coccoidea Eriococcidae), with a key to European genera of Eriococcidae.

Kozár

2011

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A new species of Acanthococcus (Hemiptera, Coccoidea, Eriococcidae) on Leptospermum scoparium (Myrtaceae) from Italy and France

Germain

2010

The adult female, 1 st -instar nymph, 2 nd -instar male and 2 nd -instar female nymphs of a new species of felt scale, Acanthococcus mariannae Pellizzari, are described and illustrated. The new species was collected off Leptospermum scoparium (Myrtaceae) in Italy and France. An identification key of Eriococcid species known to occur on Leptospermum spp is also provided.According to the keys to genera by Hodgson et al. (2004) and Henderson (2007), this new species falls in the genus Eriococcus whereas, according to more recent keys (Kozár and Konczné Benedicty, 2008;Hodgson and Miller, 2010) it is an Acanthococcus species. Accordingly to the most recent papers, this new species is placed in the genus Acanthococcus, even though it is possible that, based on molecular analysis, this position could change in the future.We are aware that the generic position of many Eriococcids is still currently controversial (Foldi & Kozár, 2007), mainly with regard to the morphological features which separate the genera Acanthococcus and Eriococcus. The present taxonomic situation and status of our knowledge of the Family Eriococcidae are clearly summarized by Kozár and Konczné Benedicty (2008), Kozár (2009) and Hodgson and Miller (2010. Material and methodsSpecimens were slide mounted according to the procedures of Ben-Dov and Hodgson (1997). Measurements and frequencies are given as mean, followed by the ranges in parentheses. Key to the 7 eriococcid species known to occur on Leptospermum spp.The key is based on adult females morphology and is taken from Hoy (1959), with modifications to insert the new species and to update terminology.

A redescription of the monotypic felt scale insect genus Pedroniopsis Green (Hemiptera: Coccomorpha: Eriococcidae) from India and Burma

Hodgson

Williams

2016

Here we redescribe the felt scale genus Pedroniopsis Green and its type species Pedroniopsis beesoni Green for the first time since it was described 90 years ago. We consider that the genus belongs to the family Eriococcidae as presently understood but realise that the family may not be monophyletic. The species was collected in crevices and pits on the bark of Shorea robusta (Dipterocarpaceae) from Odisha State, India, which is its only known locality in India. We also record the species from Burma (Myanmar) for the first time living in galls on Dipterocarpus tuberculatus (Dipterocarpaceae) and, therefore, the species may have a wider distribution but has not been observed because of its cryptic habit. The adult females of the genus and species have some unusual features such as truncate-conical marginal and dorsal setae that are mostly bifid at the tip. We suggest that the genus may be similar in some respects to the genus Sangicoccus Reyne known from farther east in southern Asia.