Valid Names Results

Ripersiella emarai Jansen, 2015 (Rhizoecidae: Ripersiella)

Nomenclatural History

• Ripersiella emarai Jansen 2015. Type data: THE NETHERLANDS: NVWA-kas, greenhouse, Wageningen, on Ficus cyathistipula, 2/10/2012, by Sukul. Holotype, female, by original designation Type depository: Wageningen Plant Protecton Servce, Department of Entomology, The Netherlands; accepted valid name Notes: Paratypes, females: The Netherlands: Bleiswijk, 29 June 2006, Ficus cyathistipula, leg. A. Emara, 1 slide: 2 adults, PPS3373646; Bleiswijk, 7 July 2006, Dieffenbachia sp., leg. A. Emara Illustr.

Common Names

Ecological Associates

Hosts:

Families: 2 | Genera: 2

Geographic Distribution

Keys

• JansenWe2015: pp.12 ( Life Stages ) [Female nymphal stages]
• JansenWe2015: pp.12 ( First instar Second instar (F) Third instar (F) ) [Ripersiella in greenhouses in The Netherlands]
• JansenWe2015: pp.12, 16 ( Adult (F) ) [Subterranean mealybugs of The Netherlands]

Remarks

• Systematics: Genbank Acc. No. [GBN] KM453213) is 81% identical to R. hibisci (GBN KM453214 and KM453215), 82% to R. multiporifera (GBN KM453216) and 85% to Rhizoecus dianthi (GBN KM453217). Ripersiella emarai can be distinguished from female adults of the other members of the genus by the following combination of characters: bitubular pores present, ventral and dorsal claw digitules setose, shorter than claw, multiloculars absent, oral collar tubular ducts present, dorsal multiloculars absent, eyes present, antennae 6-segmented. Ripersiella emarai is distinguished from R. loksae by the shorter bitubular ducts which are 9 μm in length in R. loksae and up to 6 μm in length in R. emarai, the shape of the internal genital organ, the cephalic plate which is not visible in R. loksae but present in R. emarai, width of circulus which in R. loksae is 14 μm wide and in R. emarai 30–37 μm wide at base, anal ring of R. loksae with 26 cells in outer row whereas there are 18 cells in the outer row of R. emarai and the antennae of R. loksae which are about 130–140 μm long whereas those of R. emarai are 148–168 μm long. (Jansen & Westenberg, 2015)
• Structure: The body of the species is typical for the Rhizoecini: elongate to broadly oval depending of the age of the specimen, flattened ventrally and convex dorsally. Teneral females are more or less elongate and the hind legs reach the ostioles whereas egg-laying females possess a swollen abdomen and an ovalshaped body, the legs reaching the third or fourth abdominal segment. Normally they are very active, walking around. The body is lightly covered with a white powdery, mealy, wax secretion; legs and antennae are pale brown. (Jansen & Westenberg, 2015)
• Biology: This species was found living subterraneously on the root hairs. During all observations, most developmental stages were present and mixed, suggesting that there is more than one generation per year. This species is bisexual with alate males being present in much smaller numbers than females.(Jansen & Westenberg, 2015)
• General Remarks: Detailed description and illustrations of nymphs and adult female in Jansen & Westenberg, 2015.

Illustrations

Citations