Macrosiphoniella madeirensis Aguiar & Ilharco
Franquinho Aguiar, A. M. & Ilharco, Fernando Albano, 2005, Macrosiphoniella madeirensis Aguiar & Ilharco sp. nov. (Hemiptera: Sternorrhyncha: Aphididae) from Madeira Island, Zootaxa 867, pp. 1-12: 1-7
treatment provided by
|Macrosiphoniella madeirensis Aguiar & Ilharco|
Apterous viviparous female ( Fig. 1View FIGURE 1). Measurements from 33 specimens ( Table 1). Body 1.95–2.87 mm long, with head, antennae, rostrum, pronotum, mesonotum, legs, siphunculi, and cauda black. Abdominal dorsum membranous, with pairs of marginal, pleural, spinal, and antesiphuncular black sclerites; spinal sclerites on 2 nd, 3 rd, and 4 th tergites usually larger than the others and those on 3 rd and 4 th tergites often fused into two larger plates; 8 th abdominal tergite with a transverse black band. Frontal tubercles of head little developed. Antennae 2.06–2.51 mm long, 0.82–1.06 times as long as body; III antennal segment 0.58–0.73 mm long, with 19–46 secondary rhinaria irregularly scattered on the 0.5–0.7 basal part of the segment; IV antennal segment 0.39–0.52 mm long and 1.22–1.45 times as long as V, this 0.29–0.38 mm long; base of VI segment 0.12–0.15 mm long; processus terminalis 0.49–0.60 mm long, 3.47–4.38 times as long as base of VI and 0.74–0.95 times as long as III. Primary rhinaria ciliate. Rostrum long, reaching to abdominal sternites 3–4. Apical rostral segment stilettoshaped, 0.19–0.22 mm long, with apex distinctly rostrate, 3.80–5.25 times as long as its basal width, 1.43–1.75 times as long as 2 nd joint of hind tarsus (this 0.12–0.15 mm long) and 1.33–1.69 times as long as base of antennal segment VI. Secondary hairs of apical rostral segment 5–7 in number, rarely 4 or 8, the longest 47–70 µm; primary hairs placed on apical third of segment, being two pairs near apical rostrate part and one pair distally placed, sometimes between middle and apical third of segment. Siphunculi tapering, without basal constriction, 0.33–0.49 mm long, with reticulation on apical 55–65 %, 0.15–0.20 times as long as body and 0.94–1.15 times as long as cauda. Cauda elongate, 0.32–0.44 mm long, constricted at basal third, 2.53–3.33 times as long as its basal width and 1.52–2.15 times as long as the apical rostral segment. Caudal hairs 13–23. Subgenital plate with 2–4 primary hairs and 11–14 (rarely 10–15) marginal ones; sometimes with a supernumerary hair. First tarsal segments with 3, 3, 3 hairs. Marginal tubercles absent. Dorsal hairs very long, acute, blunt, or slightly capitate; posterior cephalic hairs and spinal on 3 rd abdominal tergite about 100–113 µm long, rarely shorter (up to 86 µm); hairs on 8 th abdominal tergite 4–6 rarely 7, 93– 125 µm long. Pronotum with 8–14 hairs. Tibial hairs stout, with soft apex. Antennal hairs on III segment 33–45 µm long, with soft apex. Ventral hairs shorter than dorsal ones, mostly blunt but some up to finely pointed.
Color when alive: pale gray, covered with a fine whitish waxy excretion, this absent on a bright black somewhat quadrangular spot on center of abdominal dorsum and on a variable degree on abdominal tergites 5 to 8, especially the 6 th and 8 th where the siphunculus and cauda are inserted ( Fig. 2View FIGURE 2).
Alate viviparous female ( Fig. 3View FIGURE 3). Measurements from 10 specimens ( Table 2). Body 2.21–2.70 mm long. Antennae 2.38–2.69 mm long, 0.98–1.09 times as long as body; III antennal segment 0.72–0.85 mm long, with 60–82 secondary rhinaria on entire length of segment; IV antennal segment 0.45–0.54 mm long, 1.25–1.41 times as long as V, with 0–3 secondary rhinaria, when present, on basal two thirds of segment; V antennal segment 0.34–0.44 mm long, without secondary rhinaria; base of VI segment 0.12–0.15 mm long; processus terminalis 0.56–0.63 mm long, 3.80–4.67 times as long as base of VI and 0.74– 0.85 times as long as III. Apical rostral segment 1.50–1.57 times as long as 2 nd joint of hind tarsus (this 0.13–0.14 mm long) and 1.36– 1.68 times as long as base of antennal segment VI. Secondary hairs of apical rostral segment 6–7, rarely 8, the longest 50–60 µm. Siphunculi subcylindrical, 0.35–0.45 mm long, with reticulation on apical 53–61 %, 0.14– 0.19 times as long as body and 1.03–1.33 times as long as cauda. Cauda 0.29–0.37 mm long, slender, 2.42–3.08 times as long as its basal width and 1.38–1.68 times as long as apical rostral segment. Caudal hairs 15–22. Subgenital plate with 3–4 primary hairs and 9– 13 marginal ones. Posterior cephalic hairs 63–88 µm long; spinal hairs on 3 rd abdominal tergite 70–106 µm long; hairs on 8 th abdominal tergite 4 –5, 75– 97 µm long. Antennal hairs on III segment 30–38 µm long. Otherwise as in apterous viviparous female.
Host plant, locality, and type depositories. Macrosiphoniella madeirensis lives on the terminal parts of the shoots and on the leaf petioles of Helichrysum melaleucum Rchb. ex. Holl, an endemic Compositae of Madeira Island.
The description of M. madeirensis is based on specimens of the following two samples: (1) S. Vicente, Boaventura, Vereda da Entrosa ( Fig. 4View FIGURE 4), 12.II. 2000, col. A.M.F. Aguiar, register number ( ICLAM) A 716; (2) Santana, Arco de S. Jorge, 14.II. 2001, col. A.M. F. Aguiar & J. Jesus, register numbers A 744 and CAEAN 6457.
Nos. 1–3, from sample A 716. Nos. 4–21, from sample 6457. No. 20, holotype. A.r.s. — apical rostral segment. 2 nd j.h.t. — 2 nd joint of tarsus. Siph. — siphunculus. Sec. rhin. — secondary rhinaria.
No. Body Antennae A.r.s. 2 nd Siph. Cauda Caudal Sec. rhin. IV
j.h.t. hairs III III IV V VI Total
Nos. 1–10, from sample 6457. A.r.s. — apical rostral segment. 2 nd j.h.t. — 2 nd joint of hind tarsus. Siph. — siphunculus. Sec. rhin. — secondary rhinaria
The holotype is specimen no. 20 of the type series (an apterous viviparous female on slide 6) ( Table 1). It is kept in the Aphid Collection of Estação Agronómica Nacional ( CAEAN). Paratypes on slides are kept also in CAEAN and in Insect Collection of Laboratório Agrícola da Madeira ( ICLAM). Paratypes within alcohol will be sent to the aphid collections of The Natural History Museum (Dr. Paul Brown), London, England; the Museum National d’Histoire Naturelle (Dr. G. Remaudière), Paris, France; the University of León (Dr. J. M. Nieto Nafria), León, Spain; and the Università degli Studi de Catania (Dr. S. Barbagallo), Sicily, Italy.
The specific name madeirensis is preferred to maderensis according to the International Code of Zoological Nomenclature (1985), Appendix C (Latinization of geographical and proper names): “The geographical and proper names of nations that employ the Latin characters should be written with the orthography of the country in which they originate”
|No. 1||Body 2.25||A.r.s. 0.21||Siph. 0.40||Cauda 0.38||Caudal hairs 23||Sec. rhin. III 46 & 33|
|0.60||0.44||39 & 31|
|0.59||0.40||32 & 31|
|0.63||0.40||33 & 30|
|0.68||0.48||0.35 0.15+0.54||38 & 32|
|0.69||0.52||0.36 0.15+0.52||34 & 37|
|0.73||0.50||43 & 36|
|0.65||0.43||29 & 32|
|2.56||0.81 0.54 0.43|
|2.48||0.73 0.48 0.34||2.43|
|2.38||0.79 0.50 0.38|
|2.29||0.72 0.46 0.34||2.38|
|2.33||0.74 0.45 0.36||0.14+0.63||2.50|
|2.21||0.74 0.45 0.36||2.41|
|2.60||0.76 0.53 0.38||2.54|
|2.68||0.85 0.54 0.41||2.69|
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.