Ferrisia colombiana Kaydan & Gullan, 2012

Kaydan, M. B. & Gullan, P. J., 2012, 3543, Zootaxa 3543, pp. 1-65 : 14-16

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Ferrisia colombiana Kaydan & Gullan

sp. n.

Ferrisia colombiana Kaydan & Gullan sp. n.

( Fig. 6)


Type material. Holotype: adult ♀ (farthest from data label on slide with 2 paratypes), ex cut flower, COLOMBIA, Guacamaya , intercepted at Miami, 076163, 88-04646, 15.iv.1988, L. Chang ( USNM) . Paratypes: 2 adult ♀ on same slide as holotype ( USNM) .

ADULT FEMALE. Diagnosis. Ferrisia colombiana can be diagnosed by the following combination of features: absence of clusters of small oral-collar tubular ducts on ventral margins of abdominal segments; ventral oral-collar tubular ducts generally associated with 1 or 2 discoidal pores on derm around duct rim, each pore 4–5 µm in diameter and almost two times larger than duct opening; dorsal enlarged tubular ducts totalling 10–29 throughout dorsum, rim of each duct with 1 or 2 oval discoidal pores (sometimes 2 pores almost merged) usually associated with duct opening; number of multilocular disc pores on venter of abdominal segments as follows: V (0 or 1), VI (6–10), VII (14–22), and VIII + IX (8–14); both pairs of ostioles present and well developed.

Ferrisia colombiana can be readily distinguished from other species in the genus by having a small number of enlarged dorsal tubular ducts; lacking clusters of small marginal oral-collar tubular ducts; having large discodial pores associated with the ventral oral-collar tubular ducts; and by the presence of multilocular disc pores on abdominal segment VI. Ferrisia colombiana is most similar to F. pitcairnia but the adult female of F. colombiana is usually much larger than those of F. pitcairnia , and slide-mounted specimens of F. colombiana can be distinguished readily from F. pitcairnia by the presence of translucent pores on the hind legs (absent in F. pitcairnia ) and by having a higher number of ventral oral-collar tubular ducts (59–75 in F. colombiana and 15–23 in F. pitcairnia ).

Description of slide-mounted specimens (based on 3 specimens; Fig. 6). Body elongate oval, 1.94–2.10 mm long (holotype 2.00 mm), 1.04–1.18 mm wide (holotype 1.18 mm). Eye marginal, 55–65 µm wide. Antenna 8 segmented, 410–425 µm long; apical segment 95–100 µm long, 27–30 µm wide. Clypeolabral shield 180–195 µm long, 175–182 µm wide. Labium 160–195 µm long, 120–155 µm wide. Anterior spiracles 70–75 µm long, 30–38 µm wide across atrium; posterior spiracles 70–85 µm long, 45–50 µm wide across atrium. Circulus quadrate, 120–150 µm wide, divided by an intersegmental line. Legs well developed; hind trochanter + femur 325–350 µm long, hind tibia + tarsus 330–375 µm long, hind claw 32–35 µm long. Ratio of lengths of hind tibia + tarsus to hind trochanter + femur 1.0–1.07; ratio of lengths of hind tibia to tarsus 2.28–2.66; ratio of length of hind trochanter + femur to greatest width of femur 3.71–4.38. Tarsal digitules subequal, each 47–53 µm long. Claw digitules subequal, each 30–38 µm long. Translucent pores present on hind legs on coxa, femur and distally on tibia, totalling 22–34. Ostioles: both pairs present; each anterior ostiole, with 26–34 trilocular pores and 4–8 setae; each posterior ostiole with 28–35 trilocular pores and 7–8 setae. Anal ring 67–83 µm wide, with 6 anal ring setae, each seta 155–175 µm long.

Dorsum. Anal lobe cerarii each with 2 conical setae, 34–38 µm long, with 29–38 trilocular pores and 3–7 auxiliary setae. Dorsal body setae short and slender, each 15–55 µm long. Trilocular pores each 3–4 µm in diameter. Enlarged tubular ducts totalling 10–29 on dorsum, each duct 25–33 µm long, 5–6 µm wide at mid-length, duct opening sclerotised, 7–10 µm in diameter, surrounded by a sclerotised circular rim 17–23 µm in diameter, enclosing 1 or 2 oval discoidal pores and 2–6 (generally 3 or 4) setae; if discoidal pores present on sclerotised rim adjacent to duct opening, sometimes 2 pores almost merged; setae associated with ducts each 20–40 µm long, usually either within sclerotised area around rim (especially on abdomen) or on edge of sclerotisation (especially on head); ducts distributed only marginally on head, thorax and abdominal segments; each segment with 0–2 ducts, but with 2 or 3 ducts on each side of abdominal segment VII.

Venter. Body setae slender, each 17–150 µm long, longest setae present medially on head; apical seta of anal lobe 210–240 µm long. Multilocular disc pores present on posterior abdominal segments: 0 or 1 pore on segment V, 6–10 on segment VI, 14–22 on segment VII, 8–14 on segments VIII + IX; each pore 7–10 (mostly 8–9) µm in diameter. Trilocular pores each 2.5–4.0 µm in diameter. Discoidal pores each 4–5 µm in diameter scattered on ventral surface and generally associated with oral-collar tubular ducts, generally 1 or 2 on each anal lobe. Oralcollar tubular ducts small, each 7–10 µm long, 2.5–3.0 µm wide, mostly associated with 1 discoidal pore (rarely 2), filament of duct not visible on specimens available; ducts totalling 59–75, distributed as follows: 14–25 on head and thorax, and on abdominal segments: 4–6 in total on I–III; 2–4 on IV; 8–10 on V; 5–13 on VI; 8–16 on VII; none on VIII.

Etymology. This species is named for the country of the only known specimens and should be treated as a noun in apposition.


Smithsonian Institution, National Museum of Natural History