Antecerococcus laniger (Goux)

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: 76-78

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Antecerococcus laniger (Goux)

comb. nov.

Antecerococcus laniger (Goux)   , comb. nov.

( Fig. 27 View FIGURE 27 )

Cerococcus laniger Goux 1932: 143–144   .

Type details. FRANCE, Bouches-du-Rhône, Marseille, Mazargues, on Helianthemum   sp., November & December, 1931, L. Goux. Depositories: MNHN: 1 / 1 lectotype adf (here designated - see note below), 14.xi. 1931 (MNHN 14889 - 1); paralectotype ff, same data as lectotype, 4 / 4 adff (MNHN 14889 - 2: 1 adf; 14889 - 3: 1 adf; 14889 - 4: 1 adf; 14889 - 5: 1 adf). BMNH: data as for holotype: 1 / 1 paralectotype adf.

Note. Although Lambdin and Kosztarab (1977) and Miller et al. (2005) mention holotypes and/or paratypes, Goux (1932: 143-144) makes no mention of types and so a lectotype has been designated above.

Material studied. Paralectotypes: FRANCE, Marseille, Marzaques, on Helianthemum   sp. ( Cistaceae   ), 14.xii. 1931, L. Goux # 517 (MNHN 14889): 2 / 2 (or 3) adff (f –p); Marseille, on Helianthemum   sp., xi. 1931, L. Goux (BMNH): 1 / 1 adf (p, missing part of abdomen).

Note. All specimens are poor, and thus the following description is an amalgam of all three specimens.

Mounted material. Body large, roundly pear-shaped, almost as wide as long 3.0 mm long, and 2.55 mm wide.

Dorsum. Eight-shaped pores of 3 sizes: (i) a large rounded pore, each 20– 24 x 10–15 µm, and (ii) a much smaller intermediate-sized, slightly elongate pore, each 10–12 x 6 µm, together evenly but sparsely distributed throughout most of dorsum, but larger pores more abundant around each stigmatic pore band, and absent posterior to cribriform plates apart from 2 on margins of most posterior abdominal segments; and (iii) smallest pore, each 6.5 –7.0 x 3.5 µm, with 2–5 associated with apex of each stigmatic pore band. Simple pores, each about 3 µm wide, sparse. Cribriform plates round, in a group of 5 or 6 submedially on each side of abdominal segment IV, each 15– 22 µm wide with a narrow margin and moderate to small micropores. Dorsal setae extremely few, each setose, and mainly about 5 µm long. Tubular ducts with outer ductule about 26 µm long, inner ductules quite short; outer ductules slightly broader than those on venter; abundant throughout. Anal lobes mainly membranous, sclerotizations restricted to small areas on inner margins, without obvious folding but with inner margins serrate; setae as follows: each apical seta 185 µm long; dorsal fleshy setae somewhat bent; more basal seta 33 µm long, more apical seta 25–28 µm long; ventral setose seta near apex 20 µm long; each lobe with a short setose seta at base of each inner margin, each 10–12 µm long; a much longer medioventral seta, each about 45 µm long, and a medium lengthed seta anteriorly near outer margin, possibly an outer margin setae, about 35 µm long; each lobe with 1 or 2 small 8 -shaped pores. Median anal plate roundly triangular, about 53 µm long, 66 µm wide at base. Anal ring with 4 pairs of setae, each about 78 µm long.

Venter. Eight-shaped pores of intermediate size, slightly larger than those on dorsum, each 11–13 x 6–7 µm, in a broad marginal band on head and thorax and in broad segmental bands across abdominal segments. Simple pores sparse. Small bilocular pores roundish, each 7–8 µm widest, frequent medially on head and thorax. Spiracular discpores each 4–5 µm wide, with mainly 5 loculi near spiracles but some with 10 loculi in apex; posterior band bifurcated; each band in a large, distinct group near each peritreme and then sparse but broadening slightly at apex; each anterior band with 80–90 pores and each posterior band with 60–65 pores; each band with 2–5 small 8 -shaped pores associated with apex; also with 4 or 5 loculate pores laterad to each antenna. Small convex closed pores absent. Multilocular disc-pores, each 7–8 µm wide, mainly with 10 loculi, as follows: abdominal segment IX 2–4 submarginally; VIII 3–6 submarginally; VII 15–18 submarginally on each side of vulva; and then in transverse bands mainly 3–4 pores wide, VI 7–9 submarginally + 56 medially; V 12 or 13 submarginally + 70 medially; IV 11 submarginally + 90 medially; III 5–12 submarginally + 70 medially, and II 3–6 submarginally + 15 medially; metathorax without disc-pores. Tubular ducts very slightly narrower than those on dorsum, present throughout. Ventral setae showing nothing distinctive; preanal setae each perhaps 80 µm long; smaller companion seta 22–25 µm long. Leg stubs absent. Antennae 2 segmented, each 50–60 µm long, 40 µm wide, with 6–8 fleshy setae; each antenna without an apical point or a shallow setal cavity. Clypeolabral shield small, 125 long. Spiracular peritremes quite large, each 40–46 µm wide.

Comment. The above description is very similar to that of Lambdin and Kosztarab (1977) except that it is here considered that: (i) there are eight abdominal rows of multilocular disc-pores, i.e. with 2–6 on segment IX; (ii) the antennae are possibly two segmented, and (iii) the ventral 8 -shaped pores extend down between the antennae and around the mouthparts. The following combination of character-states diagnoses A. laniger   : (i) dorsum with three sizes of 8 -shaped pores, largest and intermediate-sized pores about equally abundant and present throughout; (ii) smallest 8 -shaped pores present in stigmatic bands, with 2–5 in each apex; (iii) each lateral margin of posterior abdominal segments with two large 8 -shaped pores; (iv) cribriform plates in a submedial group of five or six on each side of abdominal segment IV; (v) leg stubs absent; (vi) posterior stigmatic pore bands bifurcated; (vii) multilocular disc-pores present across all abdominal segments, including segment IX; (viii) most bands of multilocular disc-pores on abdominal segments broad, three or more pores wide; (ix) ventral 8 -shaped pores extending posteriorly between antennae around mouthparts; (x) antennae possibly two segmented and without a cone-like apex or a setal cavity, and (xi) a setose seta present near base of inner margin of each anal lobe.

The adult female of A. laniger   falls within Group D in the key to species of Antecerococcus   , perhaps nearest A. cistarum   , also from the western Palaearctic.