Eriococcus szentivanyi Kozar and Williams, sp. nov.
Creators: name: Kozár, Ferenc
name: Williams, Douglas J.
name: Benedicty, Zsuzsanna Konczné
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Eriococcidae
Eriococcus
Eriococcus szentivanyi

description: Eriococcus szentivanyi Kozár and Williams sp. nov. (Fig. 2)
Type material. Holotype adult female: Malaysia, Sabah, Mt Kinabalu, 3230 m, extracted from “common trap”, in Leptospermum forest, 29.x.1982, coll. M. Horak, MEF 8286, deposited in BMNH.
Description. Body of slide-mounted adult female, elongate-oval, about 1.43 mm long and 0.78 mm wide. Antennae 6 segmented, segment III longest but with a partial division; segment lengths (µm) I 34, II 36, III 96, IV 22, V 22, VI 31; each segment with few setae, segment II with sensory pore, segment III with almost parallel sides; apical segment with 4 sensory falcate setae, each 24–27 µm long; segments IV and V each with single falcate seta, each 24–29 µm long. Frontal lobes present next to basal antennal segments. Eyes present, near margin.
Venter. Labium 3 segmented, about 77 µm long; basal segment with 1 pair of robust setae; setae on distal segment long and capitate. Stylet loop very short, about as long as labium. Legs well developed, long, lengths in (µm): forecoxae each 72, trochanter 48, femur 142, tibia 96, tarsus 110, claw 27. Midcoxae each 77, trochanter 43, femur 135, tibia, 96, tarsus 115, claw 26. Hindcoxae each 96, trochanter 48, femur 147, tibia 101, tarsus 106, claw 30. Tarsal digitules knobbed, 49–55 µm long; claw digitules 32–36 µm long, slightly knobbed. Coxae without spinulae. Hindcoxae and femora each with large irregularly-shaped translucent pores. Each trochanter with 2 sensory pores on each side. Claws each without a denticle. Leg segments with few setae, all flagellate; tarsi each with a sensory pore at proximal end. Spiracles each about 21 µm in diameter, each with a large group of 5–10 locular pores near opening. Multilocular disc pores of 2 sizes; smaller about 4 µm in diameter, larger 5 µm in diameter with 7–10 loculi, present in small numbers over most of surface. Abdominal setae flagellate, each short, longest about as long as width of segment. Minute spine-like setae fairly numerous in a submarginal band and on frons. Microtubular ducts absent. Macrotubular ducts of 2 sizes, each about 4–6 µm wide, 19 µm long, ducts found more medially slightly narrower; each duct with inner ductule as long as outer ductule and with inner gland flower-shaped. Oviduct or internal genital organ not easily discernible. Venter of each anal lobe with 1 subapical seta, one suranal setae near inner margin and one more seta near outer margin.
Dorsum. Marginal setae robust, spine-like, weakly truncate, each 41–43 µm long, present singly on margin of each abdominal segment; also with about 16 robust, bluntly-tipped spine-like setae on head margin, each subequal to those posteriorly; spine-like marginal setae absent along thoracic margins. Other dorsal setae minute, blunt and spine-like, each 3–7 µm long, with a rather broad basal socket; mainly present across middle of segments. Macrotubular ducts present, similar to those on venter, fairly evenly distributed throughout dorsum. Microtubular ducts present, each about 5 µm long, each with an oval orifice surrounded by small flat sclerotized area with two wing-like extensions; sparsely scattered among dorsal setae. Loculate pores absent. Anal ring sclerotized, 48 µm long, 45 µm wide, with a sparse row of pores plus 6 flagellate anal ring setae, each about 94 µm long. Anal lobes well developed, about as wide as long, heavily sclerotized and each dentate along inner margin; each with 2 robust truncate setae about 20–24 µm long, and with a very short stout seta on outer margin near base, about 4 µm long. Apical setae robust and flagellate, each 110 µm long. Cauda present, sclerotized, about 48 µm wide.
Comments. Eriococcus szentivanyi differs from other species presently included in the genus Eriococcus Targioni Tozzetti sensu lato by the capitate setae on the labium, instead of the usual flagellate setae. Apparently, similar setae are found on the labium in the family Monophlebidae (Koteja, 1974) and in the mealybug genus Dicranococcus Williams. E. szentivanyi is similar to Eriococcus araucariae Maskell in possessing a marginal series of stout spine-like setae but these are noticeably longer than the other dorsal setae. Furthermore, (i) the marginal spinose setae are absent from the thorax of E. szentivanyi whereas they are present on E. araucariae; (ii) there is only one pair of setae present on the basal segment of labium of E. szentivanyi but there are two pairs on E. araucariae; (iii) E. szentivanyi possesses a cauda (apparently absent on E. araucariae) and (iv) E. szentivanyi lacks trilocular pores (present on E. araucariae).
Etymology. The new species is named after József Szent Ivány, who contributed much to the knowledge of the Coccoidea and other insect groups of Papua New Guinea.
description: Published as part of Kozár, Ferenc, Williams, Douglas J. & Benedicty, Zsuzsanna Konczné, 2009, A new genus and four new species of the scale insect family Eriococcidae (Hemiptera: Coccoidea) from the Austro-Oriental Region., pp. 1-15 in Zootaxa 1979 on pages 5-7, DOI: 10.5281/zenodo.185241