Pelionella manifecta (Borchsenius) Borchsenius, 2015

Kaydan, Mehmet Bora, 2015, A systematic study of Peliococcus Borchsenius (Hemiptera: Coccoidea: Pseudococcidae), with descriptions of a new Palaearctic genus and four new species from Turkey, Zootaxa 3920 (2), pp. 201-248 : 234-235

Pelionella manifecta (Borchsenius) , comb. nov.

( Figs. 13 , 14 )

Peliococcus manifectus Borchsenius, 1949: 245 : Danzig, 2001: 125.

Peliococcus albertaccius Goux, 1990: 83 , syn. nov.

Pelionella manifecta (Borchsenius) ; Danzig & Gavrilov-Zimin 2014: 457. Unavailable name.

Material studied. Peliococcus manifectus . Lectotype: adult female: Azerbaijan, Geok-Tapa and Armenia, Megri, on Chrysanthemum sp. ( Asteraceae ) ( ZIN).

P. albertaccius . Paratypes: 4 adult females: France, Corse, Albertacce, on Helichrysum angustifolium (Asteraceae) , 28.viii.1951, coll: L. Goux ( MNHN 14755-2, 4, 5, 8).

Description (based on French materials). Adult female. Body elongate oval, 1.36–1.88 mm long, 0.86–1.10 mm wide. Eyes marginal, 47.5–60.0 µm wide. Antenna 9 segmented, 410–425 µm long; apical segment 60.0 µm long, 20–28 µm wide; apical setae 27–45 µm long plus 3 fleshy setae 25–33 µm long. Tentorium 140–175 µm long, 115–140 µm wide. Labium 135–140 µm long, 95 µm wide. Anterior spiracles 60–70 µm long, 27–35 µm wide across atrium; posterior spiracles 70 µm long, 45–50 µm wide. Circulus small, oval, 65–85 µm wide. Legs well developed; posterior legs: coxa 155–175 µm long; trochanter + femur 240–260 µm long; tibia + tarsus 260–280 µm long; claw 25–30 µm long. Ratio of lengths of tibia + tarsus to trochanter + femur 1.07–1.23:1; ratio of lengths of tibia to tarsus 2.16–2.41:1; ratio of length of trochanter + femur to greatest width of femur 3.42–4.0:1.

Tarsal digitules hair-like, each 20–23 µm long. Claw digitules knobbed, each 20–25 µm long. Anterior ostioles with a total for both lips of 21–30 trilocular pores and 2–4 setae; each posterior ostiole with a total for both lips of 32–40 trilocular pores and 2–4 setae. Anal ring 85–110 µm wide, with 6 setae, each seta 115–145 µm long. Cerarii slightly sclerotized, numbering 18 marginal pairs; anal lobe cerarii each with 2 slender enlarged setae, 17–23 µm long, 3 or 4 spine-like auxiliary setae and 9–16 trilocular pores; C3 with 3 enlarged setae (slightly smaller than other marginal cerarian setae) and 3 or 4 trilocular pores; other marginal cerarii each with 2 enlarged setae and several trilocular pores; dorsal cerarii also present on abdominal segments VI and VII medially.

Dorsum. Setae spine-like, each 7.5–15.0 µm long; larger setae with 1–3 trilocular pores near base but not touching basal socket. Clusters each with 2–6 (usually 4) multilocular disc pores, each pore 7.5–10.0 µm in diameter, a small oral collar tubular duct 8–10 µm long, 3.0–4.0 µm wide, 3–6 large oral collar tubular ducts, each 7.5–8.0 µm long, 4.0–5.0 µm wide, and 1–4 minute discoidal pores, each 2 µm in diameter; clusters present on head and thorax, and on abdominal segments as follows: I 9–11, II 10, III 11– 13, IV 11–15, V 12, VI 8–11, VII 10–14. VIII 0. Trilocular pores, each 3–5 µm in diameter, scattered throughout. Minute discoidal pores mainly restricted to within clusters.

Venter. Setae of 2 types: (i) slender hair-like setae, each 15–88 µm long; longest setae medially on head; and (ii) spine-like setae, each 10.0–12.5 µm long, in submarginal rows. Apical setae of anal lobes 145–185 µm long. Multilocular disc pores of 2 kinds: (i) pores, each 7.5–10.0 µm in diameter with a single ring of loculi, present in 10–14 clusters on medially abdominal segments III and IV; each cluster with 2–4 multilocular disc pores, a small oral collar tubular duct in centre and 1–4 larger tubular ducts; also similar multilocular disc pores in single rows on other abdominal segments, as follows: V 2 or 3, VI 14–18, VII 34 –40, VIII + IX 20–23; and (ii) multilocular disc pores, each 7.5–10.0 µm in diameter with 2 rings of loculi, as in clusters on dorsum; each cluster with 3 or 4 disc pores, a single small tubular duct, 8–10 µm long, 3.0–4.0 µm wide in centre, plus 2–4 large tubular ducts, each 7.5–8.0 µm long, 4.0–5.0 µm wide, among multilocular disc pores, and 1–3 minute discoidal pores, each 2 µm in diameter; clusters restricted to submarginal areas of head, thorax and abdomen. Quinquelocular pores, each 5.0–7.5 µm in diameter, scattered medially on head, thorax and anterior 3 abdominal segments. Trilocular pores, each 2–3 µm in diameter, scattered throughout. Minute discoidal pores, 2 µm in diameter, few. Oral collar tubular ducts of 3 sizes: largest and smallest ducts restricted to within each cluster, as described on dorsum; medium sized ducts, each 9–10 µm long, 2.5–4.0 µm wide, concentrated on body margin and in single rows on more posterior abdominal segments, totalling 70–108; few or no ducts on head, thorax and abdominal segments II and III but present on posterior abdominal segments as follows: IV 4–12, V 8– 13, VI 18–31, VII 24–32, VIII+ IX 18–32.

Comments. Pelionella manifecta is most similar to P. multipora sp. nov. in having: (i) dorsal clusters with multilocular disc pores, (ii) 18 pairs of marginal cerarii, and (iii) 2 sizes of oral collar tubular ducts on the dorsum. However, P. manifecta differs from P. multipora in having 2–6 multilocular disc pores in each cluster (5–16 pores in P. multipora ). P. m an i f e ct a is also similar to P. balteata and P. cycliger in having multilocular disc pores in clusters, but differs from both of these species in having 2 sizes of oral collar tubular duct in each cluster.

There are some differences between the French and Azerbaijan specimens, namely: (i) number of clusters on dorsum (fewer in Azerbaijan population); (ii) number of clusters on midventer (fewer in Azerbaijan population); (iii) shape and number of cerarian setae (three cerarian setae on C 3 in French population, two cerarian setae on C 3 in Azerbaijan population); and (iv) number of trilocular pores in mid-venter (fewer in Azerbaijan population). Nonetheless, it is considered that these differences represent geographical variation.

Danzig & Gavrilov-Zimin (2014) used the name " Pelionella manifecta " before the genus name was made available in the present work. Refer to Comments under the genus Pelionella above for further information. Danzig & Gavrilov-Zimin (2014) listed “ Pelionella manifecta ” without citing “Kaydan 2014?” (due to a typographical error) and without suggesting that this was a new combination. Here the new combination is made available in a manner that satisfies the requirements on the Code (ICZN, 1999).

Host plants. On stems of Ancathia sp., Centaurea solstitialis , Chrysanthemum sp., Helichrysum sp., H. angustifolium , Sonchus sp. ( Asteraceae ), Echium sp. ( Boraginaceae ) and Thymus sp. ( Lamiaceae ).

Distribution. Armenia, Azerbaijan, France, Italy, Kazakhstan, Sardinia, Sweden (?), Russia (Krasnodar Terr.) and Turkey.

Figures

FIGURE 13. Pelionella manifecta (Borchsenius), paralectotype, with modifications. Note: each cluster with 3 – 6 (usually 4) multilocular disc pores, 3 – 5 large oral collar tubular ducts, and 2 – 4 minute discoidal pores; quinquelocular pores common on venter; 18 pairs of marginal cerarii.

FIGURE 14. Pelionella manifecta (Borchsenius), paratype of Peliococcus albertacius Goux.