Antecerococcus philippiae (Lambdin & Kosztarab) Lambdin & Kosztarab, 2016

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 : 100-102

Antecerococcus philippiae (Lambdin & Kosztarab) , comb. nov.

( Fig. 37 )

Cerococcus philippiae Lambdin & Kosztarab 1977: 182 –185

Type details. MADAGASCAR, Ambila, on Philippia sp. ( Ericaceae ),?. iv.1951, R. Paulian. Depository: MNHN: holotype adf (MNHN, type no. 436). There are no other specimens of this species.

Note: Lambdin & Kostarab (1977) and Miller et al. (2005a) list BMNH as the type depository; however the holotype was deposited in the MNHN (D. Matile, pers. comm.), where the rest of the material collected by R. Paulian is deposited. There is an empty envelope in BMNH, stating transferred to MNHN.

Material studied. Holotype f: MADAGASCAR, Ambila, no host, -. iv.1951, R. Paulian (MNHN): 1/1adf (fair).

Mounted material. Body roundly pear-shaped, 1.0 mm long, and 0.9 mm wide.

Dorsum. Eight-shaped pores of 3 sizes: (i) largest pore, each 15– 18 x 10–12 µm, in about 8 or 9 marginal groups on each side, and in 3 pairs of submedial groups of 10–13 pores, each pair approximately on a thoracic segment plus a medial group on head; also in a line of 4 or 5 on each side of posterior-most abdominal segments; (ii) a slightly smaller pore, similar in shape to larger pore but each 11.5–13.0 x 6.5–7.0 µm, restricted to a sparse marginal band, but occasionally present submedially with larger pores; and (iii) a much smaller pore, each 3.0–3.5 x 3 µm, frequent throughout rest of dorsum, including posterior abdominal segments and also with 2 present in apex of each stigmatic band. Simple pores, each about 2.0 µm wide, rare. Cribriform plates roundish, small, each mainly 8–10 µm wide, with 2 or 3 submedially on each side of segment IV; each with a narrow border and few large micropores. Dorsal setae showing nothing distinctive. Tubular ducts with each outer duct 20–24 µm long, and about 2.5 µm wide, clearly broader than those on venter; abundant throughout. Anal lobes mainly membranous, but with sclerotized inner margins; each lobe with a long apical seta, all broken but at least 125 µm long; fleshy setae near apex on dorsal surface each about 25 µm long, more basal fleshy setae each 21–31 µm long; ventral setose seta near apical setae each 18 µm long; medioventral setae or outer margin setae each about 5 µm long; 8-shaped pores possibly absent on both surfaces. Median anal plate with a roundish apex, about 30 µm long and 50 µm wide at base. Anal ring with 4 pairs of short setae, each 35–45 µm long.

Venter. Eight-shaped pores clearly somewhat larger than smaller pores on dorsum, of an unusual structure, each 8 x 5 µm, in a sparse submarginal band, and also with some asymmetrical pores, each 10 x 6 µm, mainly in sparse rows anterior to each band of multilocular disc-pores on abdomen. Simple pores scarse, most abundant on abdomen. Small bilocular pores, each about 4 x 3 µm, frequent medially on head and thorax. Spiracular disc-pores small, each 3–4 µm wide (smallest near spiracles), mainly with 5 loculi; posterior bands not bifurcated; all bands mainly 2–3 pores wide but widening slightly at apex on dorsum; with 3–6 pores in a group anterior to each peritreme plus 25–35 pores in each band; apex of each band with 2 small 8-shaped pores; no loculate pores detected near antennae. Multilocular disc-pores, each 5 µm wide with mainly 10 loculi, in sparse transverse rows, as follows (due to distortion, these are approximate): abdominal segment VIII 4 or 5 on each side, almost forming a line; VII about 12 on each side submarginally; VI 2 submarginally +24 medially; V 2 or 3 submarginally + 17 medially; IV 2 or 3 submarginally and 14 medially; III with 2 or 3 submarginally +16 medially; II 1 or 2 submarginally + 13 medially; also perhaps 2 medially on metathorax. Small convex closed pores absent. Tubular ducts slightly narrower than those on dorsum. Ventral setae showing nothing significant; preanal setae each 55 µm long; companion setae possibly absent. Leg stubs absent but with some dermal folds in this position. Antennae unsegmented, each about 17 µm long and 20–23 µm wide, with about 7 or 8 fleshy setae, without a cone-shaped extension but with a shallow setal cavity. Clypeolabral shield about 100 µm long. Spiracular peritremes each 20–23 µm wide.

Comment. The above description agrees with that of Lambdin and Kosztarab (1977) except that: (i) no loculate pores could be detected near either antenna; (ii) there appeared to be an intermediate-sized pore along the margin, making it three sizes of 8-shaped pore on the dorsum; and (iii) it was considered that multilocular discpores were probably present on the metathorax. Therefore the adult female of A. philippiae can be recognised by the following combination of character-states: (i) dorsum with three sizes of 8-shaped pore; (ii) large 8-shaped pores mainly restricted to margin and in three submedial groups and a medial group; (iii) intermediate-sized pores forming a narrow marginal band; (iv) smallest pores throughout rest of dorsum; (v) posterior abdominal segments with a line of four or five large 8-shaped pores along each margin; (vi) cribriform plates in a submedial group of two or three on each side of abdominal segment IV, each with a few large micropores; (vii) leg stubs absent; (viii) posterior stigmatic band not bifurcated; (ix) multilocular disc-pores present across all abdominal segments plus perhaps a few medially in metathorax, and (x) each antenna with setae arising from a shallow setal cavity but without a cone-like apex.

The adult female of A. philippiae falls within Group A in the key to species of Antecerococcus , and keys out close to A. gallicolus and A. pileae . All three are from either Madagascar or Mauritius.

Figures

FIGURE 37. Antecerococcus philippiae (Lambdin & Kosztarab). Adult female.