Cerococcus russellae Kosztarab & Vest

Chris J. Hodgson & Douglas J. Williams, 2016, (Hemiptera: Sternorrhyncha, Coccomorpha) with particular reference to species from the Afrotropical, western Palaearctic and western Oriental Regions, with the revival of Antecerococcus Green and description of a new genus and fifteen new species, and with ten new synonomies, Zootaxa 4091 (1), pp. 1-175 : 162

Cerococcus russellae Kosztarab & Vest

Cerococcus russellae Kosztarab & Vest 1966: 374 –375.

Type details. MEXICO, Morelos, Cuernavaca, on Gossypium herbaceum , 3.ix.1923, E.G. Smyth. Depository: USNM: holotype adf + 2 paratype adff on same slide and 2/5 paratype adff.

Material examined: paratype ff: MEXICO, Morelos, Cuernavaca, on Gossypium herbaceum (Malvaceae) , 3.ix.1923, E.G. Smyth (USNM): 1/2adff (g). Also: GUATAMALA, San Lucas Taliman, on coffee ( Coffea sp., Rubiaceae ), 1.vii.1959, Jesus Castro (USNM): 1/3adff (g).

Comment. Kosztarab and Vest (1966) and Lambdin and Kosztarab (1977) provide good descriptions. In the the type specimens, many of the leg stubs have distinct digitules and several small pores, here believed to be setal sockets; this has not been noted in other species. The leg stubs on the non-type specimens from Guatamala are different in shape and lack digitules. Other differences between the two lots of material are (character-states for Guatamala specimens): (i) many fewer quinquelocular disc-pores and 8-shaped pores in the apices of each stigmatic pore band, and (ii) there are many fewer loculate pores near each antenna. Like C. deklei and C. kalmiae , C. russellae has the 8-shaped pores on the dorsum arranged in a lattice-like pattern, as also found in species of Cerochiton (described as new above). However, the structure of the apices of the stigmatic pore bands is very different from that on species of Cerochiton as is the distribution of the larger dorsal tubular ducts.

The adult female of C. russellae is characterised by the following combination of character-states: (i) 8-shaped pores on dorsum in a lattice-like pattern; (ii) 8-shaped pores on dorsum of two sizes, both quite small; (iii) larger pores restricted to near stigmatic pore bands; smaller pores throughout rest of dorsum; (iv) cribriform plates in two submedial groups of 15–24 on each side of abdominal segment IV; (v) tubular ducts of one size; (vi) multilocular disc-pores absent; (vii) stigmatic pore bands bifurcated; (viii) stigmatic pore bands with abundant spiracular discpores, and (ix) leg stubs present.

In the key to adult females of Cerococcus , C. russellae keys out close to C. deklei from North America.