Acanthococcus Signoret,

González, Patricia, Claps, Lucía E., Juárez, Andrea & Moreno, Diego, 2017, Review of the Eriococcidae (Hemiptera: Coccomorpha) infesting Fabaceae in Argentina, with descriptions of three new species of Acanthococcus Signoret, Zootaxa 4232 (1), pp. 41-57: 42

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Acanthococcus Signoret


Acanthococcus Signoret 

Generic diagnosis (amended). Adult female. Dorsum: Setae often enlarged conical or spinose. Enlarged tubular ducts absent. Macrotubular ducts present throughout. Microtubular ducts present. Median plate present or absent. Margin: often demarcated by a line of enlarged setae. Venter: often with enlarged setae near margin but with hairlike setae present elsewhere. Macrotubular ducts present, frequently of more than 1 type. Microducts present. Disc pores most usually quinquelocular, but number of loculi varying from 3 to 9. Frontal lobules often present. Antenna with 6 or 7 segments. Labium 3 segmented, basal segment with 1 or 2 pairs of setae. Legs well developed, hind leg usually with translucent pores (modified after Hodgson & Miller 2010; Kozár et al. 2013).

Comment. In addition, the Argentinian species treated in this paper have: (i) two types of microtubular ducts: Type A: with a broad vestibule (outer ductule), longitudinally divided by a median septum, the inner end with two protuberances, and with a simple outer orifice; and Type B with a narrow, undivided vestibule (ductule), with the inner end rounded and a simple outer orifice; (ii) macrotubular ducts of two types: either symmetrical with the sides of the cup of equal depth, or asymmetrical, with the cup deeper on the side where the inner ductule arises; and (iii) small macrotubular ducts, each short and narrow, with a broad cup (two or three times wider than duct), present only on ventral surface ( Fig. 2View FIGURE 2 G) ( González 2008).