Scale insects (Hemiptera: Coccomorpha) on sugarcane in Colombia, with description of a new species of Tillancoccus Ben-Dov (Coccidae)
Caballero, Alejandro
Ramos-Portilla, Andrea Amalia
Kondo, Takumasa
Zootaxa
2017
4258
5
490
500
383C4
Green, 1899
Green
1899
[151,632,223,248]
Insecta
Diaspididae
Duplachionaspis
Animalia
Hemiptera
5
495
Arthropoda
species
divergens
Hosts.Oligophagous on hosts belonging to 19 genera in Poaceae( García Morales et al.2016; Lastra & Gómez 1997).
Diagnosis.Adult female cover flat, white, broadly oyster-shell shaped; exuviae marginal, yellow to brown. Slide-mounted characters of adult female: with 2 pairs of well-developed lobes; median lobes divergent, not yoked basally, with a pair of distinct marginal setae between them. Gland spine formula: 2-2-2(3). Macroducts on pygidium subequal in size, without ducts between medial lobes; submedial ducts present on segments 3 to 6. Dorsal microducts present on submedial and submarginal areas of segments 1 to 3. Perivulvar pores present in 5 groups, with approximately 45 pores on each side of body. Anterior spiracles each with 10–12 pores, posterior spiracles with 5–10 pores ( Yu & Suh 2013).
Distribution.Australasian, Nearctic, Neotropical, Oriental and Palaearctic regions ( García Morales et al.2016). In Colombia, this species was recorded for the first time in the department of Valle del Caucaby Lastra & Gómez (1997). We record it from Risaraldaand Metadepartments. Economic importance. Duplachionaspis divergenshas been reported as a minorpest of sugarcane in Indiaand Colombia( Lastra & Gómez 1997). It is a commonly encountered, grass-infesting armored scale in Florida, USA( Evans & Hodges 2007). In Colombia, although it was recorded in the sugarcane growing region of the department of Valle del Cauca, populations are generally low and no control is required ( Uribe et al. 1997). However, Bustillo (2013)reported that a foliar infestation of up to 30% (presence of scales on one third of the leaf area) can cause losses to sugarcane production and the damage is worst in places where the soil has low fertility.
Materialstudied. COLOMBIA: Risaralda, La Virginia, 8.v.2015, coll. A. Ramos, 3 ♀, UNABvoucher N° 677. Meta, Puerto Lopez, Vda. Yurimena, Fca. Bioenergy, 227 ma.s.l., 04°10′45″N, 72°36′16″W, 19.vi.2015, Coll. A.Ramos, 3 ♀, UNABvoucher N° 677. Note:All material collected off leaves of S. officinarum. Specimens of D. divergensrecorded on sugarcane in Valle del Caucaby Lastra & Gómez (1997)were not available in the present study. According to Lastra & Gómez (1997), the identification of D. divergenswas done in the USA, but at the Colombian Center for Sugarcane Research (Cenicaña) there are no voucher specimens to support that identification (Dr. Germán Vargas, Cenicaña, personal communication, 2015).
1499614116
2015-05-08
UNAB
La Virginia & A. Ramos
Colombia
La Virginia
Material
5
495
3
3
Risaralda
1499614110
2015-06-19
UNAB
Coll. A.
Colombia
227
4.1791663
Puerto Lopez
21
-72.60445
5
495
3
3
Meta