Antecerococcus ornatus (Green)

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: 87-90

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Antecerococcus ornatus (Green)

comb. nov.

Antecerococcus ornatus (Green)   , comb. nov.

( Fig. 32 View FIGURE 32 )

Solenococcus ornatus Cockerell 1899: 392   . Nomen nudum. Cerococcus ornatus Green 1909: 306   .

Coricoccus ornatus (Green)   ; Mahdihassan 1933: 562. Misspelling of genus name.

Type details. SRI LANKA, Pundaluoya, on Coffea arabica, E.E. Green. Depository: BMNH   : lectotype (designated by Lambdin & Kosztarab 1977: 159) and paralectotype ff on same slide: 1 / 4 adff + 2 bits.

Material studied. Lectotype and paralectotype ff: SRI LANKA, Pundaluoya, on Coffea arabica   ( Rubiaceae   ), no date, E.E. Green (BMNH): 1 / 4 adff + 2 bits (f –g).

Also: INDIA, Pulney Hills, Central Coffee Research Institute, on Coffea arabica   , June 1977, no coll. (BMNH): 1 / 2 adff (fg); Suntikoppa, on Coffea arabica   , no other details (BMNH): 1 / 1 adf (g); Karnataka Coorg. Dist., Chettalli, on?coffee, 1985 no coll. (BMNH): 1 / 2 adff (g).

Note: description taken from type series and from Chettali (Indian) material, latter data in [...] where significantly different.

Mounted material. Body roundly pear-shaped, 1.7–2.2 mm long, 1.3–2.1 mm wide.

Dorsum. Eight-shaped pores of 4 sizes: (i) largest pores variable in size, each 16– 21 x 10–15 µm, present in 4 distinct marginal groups, each margin with 1 group around each stigmatic pore band, another laterally between stigmaic bands and a fourth smaller group on about abdominal segment III; also in 2 or 3 large groups medially, each with bands extending radially to larger marginal groups; a few large pores also present along margins of head; largest pores present medially in each group, becoming smaller towards outside of each group; large pores also present in a line of generally 4 (range 2–5) on each side of posterior abdominal segments; (ii) each medium-sized pore 10–12 x 5–7 µm, more or less restricted to amongst large pores; (iii) small pores, each about 7 x 4 µm, common throughout rest of dorsum anterior to cribriform plates; and (iv) a similarly-structured pore but even smaller, each 5– 6 x 2.5 –3.0 µm, present throughout abdomen posterior to cribriform plates and in apices of stigmatic pore bands. Simple pores very sparse. Cribriform plates quite small, round, each 8–11 µm wide with a broad sclerotized margin and large micropores medially; present in a group of 3 or 4 on each side of abdominal segment IV. Dorsal setae showing nothing distinctive. Tubular ducts long, each outer ductule 30–33 µm long; dorsal ducts perhaps slightly wider than ventral ducts. Anal lobes membranous apart from inner margins which are distinctly sclerotized and reticulated; each anal lobe about 80 µm long with long apical setae each at least 180 µm long (mostly broken); anterior dorsal fleshy setae straight, each 28–33 µm long; posterior fleshy setae each 16–25 µm long; ventral setose seta near apex each 18–26 µm long; medioventral and outer margin setae short; each lobe with two 8 -shaped pores. Median anal plate with a blunt and slightly serrate apex, 38–50 µm long, 38–45 µm wide. Anal ring with 4 pairs of setae, each 100–120 µm long.

Venter. Medium-sized pores, similar to those on dorsum, present in a broad marginal band and sparsely across all abdominal segments; pores along inner margin of band distinctly asymmetrical. Simple pores very sparse. Small bilocular pores oval, each about 4 x 3 µm wide, abundant on head and thorax near marginal 8 -shaped pore band but less frequent medially. Spiracular disc-pores small, each 3.5 –4.0 µm wide near spiracles, but up to 5 µm wide in apex of each band, with mainly 5 loculi, each band quite broad near spiracles, narrowing significantly before widening at apex; each band with a group of 11–14 pores near spiracle; total for each anterior band 40–80 pores; posterior band not bifurcated; posterior branches each with a total of 40–70 pores; each apex with 2–6 small 8 - shaped pores; also with 2–4 quinquelocular disc-pores near each antenna [sometimes also with 1 or 2 multilocular disc-pores]. Small convex closed pores present in loose groups or lines of 3–6 on each side of each stigmatic band and close to each spiracle, sometimes forming a complete sparse line of 10–14 pores between spiracles; variable in size, smaller pores somewhat similar to quinquelocular disc-pores but generally larger, 5 µm wide near spiracles, only 3.5 µm wide further away. Multilocular disc-pores, each 6–7 µm wide, mostly with 10–12 loculi, distributed as follows: IX 1 or 2 (rarely 0) on each side; VIII 3–7 on each side; VII 6–11 on each side of vulva, and then across more anterior segments in bands mainly 1–2 pores wide: VI 2–5 submarginally + 31–38 medially; V 3–8 submarginally + 24–43 medially; IV 3–6 submarginally + 16–31 medially; III 1–4 submarginally + 7–26 medially; II sparse, totalling 10–22; also with 6–16 medially across metathorax; also present in radial lines mesad to each spiracle, each anterior spiracle with 2–7 pores, extending medio-posteriorly towards clypeolabral shield, and each posterior spiracle with a line of 5–11, extending somewhat anteriorly towards labium; [occasionally 1 or 2 near each antenna]. Tubular ducts similar in length to those on dorsum but narrower, sparse medially. Ventral setae showing nothing distinctive; preanal setae each 65–80 µm long; companion setae short. Leg stubs absent. Antennae unsegmented, each 28–38 µm long, 20–29 µm wide. Clypeolabral shield 125–150 µm long. Spiracles each with peritremes 23–28 µm wide.

Comment. In having multilocular disc-pores mesad to each spiracle and small convex closed pores associated with each spiracle, adult females of A. ornatus   are somewhat similar to those of A. gabonensis   and A. theydoni   but the latter two species both possess leg stubs and far more large 8 -shaped pores on the dorsum. The small convex closed pores were not found by Lambdin & Kosztarab (1977) but were clearly visible on all the material studied. In addition, Lambdin and Kosztarab considered that all transverse bands of multilocular disc-pores were on the abdomen, whereas it is clear that the most anterior band is on the metathorax. The following combination of character-states diagnose the adult female of A. ornatus   : (i) dorsum with four sizes of 8 -shaped pores; (ii) large and intermediate-sized 8 -shaped pores mainly in three transverse bands on dorsum; (iii) small 8 -shaped pores present throughout rest of dorsum, but not intermingling with large or intermediate-sized pore bands; (iv) usually with four large 8 -shaped pores on each side of posterior abdominal segments; (v) cribriform plates in a group of 2–5 on each side of abdominal segment IV; (vi) leg stubs absent; (vii) posterior stigmatic band not bifurcated; (viii) small convex closed pores present associated with each spiracle, (ix) multilocular disc-pores present across all abdominal segments and metathorax; (x) multilocular disc-pores also present in radial lines extending medially from each spiracle, and (xi) antennae without either a cone-like apex or setal cavity.

There is a record of C. ornatus   from South Africa (Brain, 1920). No specimens relevant to this record are deposited in the SANC nor in the USNM, where Brain often sent specimens (Ian Millar, pers. comm.). It is considered unlikely that this record is correct.

The adult female of A. ornatus   falls within Group A in the key to species of Antecerococcus   , keying out close to A. gabonensis   , A. keralae   and A. kurraensis   .