Aphidura, Hille Ris Lambers, 1955

Barjadze, Shalva, 2019, A new species of Aphidura Hille Ris Lambers, and additional data for Aphidura pakistanensis (Hemiptera: Aphididae) from Republic of Georgia, Zootaxa 4683 (3), pp. 421-430 : 428-429

Key to apterous viviparous females of Aphidura species of the world

(updated from the key of Nieto Nafría et al. 2014)

1 SIPH markedly swollen: maximal swollen width at least 1.2 times minimal stem width.............................. 2

- SIPH has different forms: cylindrical, subcylindrical, tapering or slightly swollen................................. 10

2 Most of dorsal setae placed on conical tubercles. [Dorsum without segmental pigmented sclerotisation; On Acanthophyllum sp.]......................................................................... A. acanthophylli Remaudière

- Dorsal setae not placed on tubercles...................................................................... 3

3 Mesosternal processes and cauda pale..................................................................... 4

- Mesosternal processes and cauda more or less pigmented, light brown to brown.................................... 6

4 SIPH dark brown, 2.3–2.7 × CAUDA L, which has 7–11 setae. Abdominal dorsum with spino-pleural patch, postsiphuncular sclerites pigmented and marginal sclerites. [URS 1.0–1.2 × HT II. Cauda L 1.1–1.2× CAUDA W. On Silene suffrutescens and Silene sp.]...................................................................... A. nomadica Kadyrbekov

- SIPH pale, sometimes with smoky apex, 1.6–2.2 × CAUDA L, which has 6–7 setae. If a spino–pleural patch present then URS is 1.2–1.5 × HTII..................................................................................... 5

5 PT at least 1.4 × ANT III; approximately 4 × ANT VI b. MSL on ABD TERG II–IV approximately 3 μm. Cauda tongue–shaped. Dorsum pale with dark intersegmental sclerites. On Gypsophila sp....................................................................................................... A. graeca Nieto Nafría, Mier Durante & Remaudière

- PT at most 1.1 × ANT III and at most 3.1 × ANT VI b. MSL on ABD TERG II–IV are 7–13 μm. Cauda triangular, sometimes slight constricted. Dorsum with variable sclerotisation and pigmentation, sometimes mostly pale. On Silene sp., and an unidentified caryophyllaceous species....................... A. amphorosiphon Nieto Nafría, Mier Durante & Remaudière

6 Abdominal (or thoracic-abdominal) discal plate present, sometimes divided in transversal bands...................... 7

- Abdominal discal plate absent; a broken and irregularly edged spinopleural patch absent or present, sometimes with bridges to marginal sclerites..................................................................................... 8

7 Mesosternal processes wide and low. MSL on ABD TERG II–IV are 10–11 μm. Discal plate sometimes divided in transversal bands. SIPH 1.6–2.0 × CAUDA L, which has 7–11 setae. On Melandrium album ............... A. melandrii Kadyrbekov

- Mesosternal processes more-or-less narrow and tall. MSL on ABD TERG II–IV are 10–55 μm. Discal plate always complete. SIPH 1.6–2.6 × CAUDA L, which has 5–8 setae. On Saponaria sp., Silene spp......... A. ornatella Narzikulov & Winkler

8 SIPH 1.7–2.7 × CAUDA L. MSL on frons 7–28 μm and 0.35–1.4 × ANT III BD. On Gypsophila and Dianthus ........... 9

- SIPH 1.5–1.7 × CAUDA L. MSL on frons 35–40 μm and 1.6–1.8 × ANT III BD. On Cerastium cerastoides ............................................................................................. A. alatavica Kadyrbekov

9 MSL on frons 22–28 μm and 1.0–1.4 × ANT III BD. Subgenital plate with 12–15 setae on posterior margin. On Gypsophila altissima and G. paniculata ........................................................ A. naimanica Kadyrbekov

- MSL on frons 7–13 μm and 0.35-0.57 × ANT III BD. Subgenital plate with 8–11 setae on posterior margin. On Dianthus sp......................................................................................... A. jimoi sp. nov.

10 First segment of tarsi with 4 or less often with 3 setae. [Head and prothoracic transversal band as dark as thoracic-abdominal discal plate. SIPH cylindrical and straight. On Rosaceae species]............................................... 11

- First segment of tarsi usually with 3 setae, sometimes with 2; very infrequently with 4............................. 12

11 PT 2.2–2.7 × ANT VI b. URS with 2–5 accessory setae. MTu usually present on ABD TERG 2–4. On Prinsepia sinensis ................................................................................ A. mordvilkoi Shaposhnikov

- PT 2.9–5.2 × ANT VI b. URS with 8–10 accessory setae. MTu on abdomen always absent. On Prunus spp............................................................................................... A. bozhkoae (Narzikulov)

12 Dorsum of thorax and abdomen with setiferous sclerites, similar in size to spiracular sclerites, and sometimes coalescing between them. On Cerastium soleirolii .............................. A. corsicensis Nieto Nafría, Blackman & Martin

- Dorsum of thorax and abdomen never with setiferous sclerites; other sclerotization can be present.................... 13

13 SIPH slightly swollen with a maximal width close to 1.2 × minimal stem width and 1.6–2.0 × CAUDA L, which is 1.5–1.8 × CAUDA W and has 7–11 setae; both as dark as head dorsum and thoracic and abdominal sclerotisation (a discal plate can be present). MSL on ABD TERG II–IV are 10–11 μm and approximately 0.5 × ANT III BD. On Melandrium album ......................................................................................... A. melandrii Kadyrbekov

- Characters not in above combination..................................................................... 14

14 SIPH at most 1.95 × CAUDA L (which is short triangular), pale or uniformly dusky and slight swollen. Dorsum of head and mesosternal processes pale. Segmental thoracic and abdominal sclerotisation and pigmentation absent................. 15

- SIPH at least 1.90 × CAUDA L, both diversely shaped and coloured. Dorsum of head and mesosternal processes pale or pigmented. Thoracic and abdominal segmental sclerotisation and pigmentation rare completely absent................... 16

15 SIPH at least 0.26 mm, 0.6–0.95 × ANT III, and 1.7–1.95 × CAUDA L, which is longer than CAUDA W. Mesosternal processes conspicuous. On Dianthus spp. and Silene borysthenica .............................. A. pujoli Gómez-Menor Ortega

- SIPH shorter than 0.20 mm, 0.41–0.56 × ANT III, and 1.7–1.9 × CAUDA L, which is not longer than CAUDA W. Mesosternal processes sometimes inconspicuous. On Dianthus sp......... A. pakistanensis Nieto Nafría, Mier Durante & Remaudière

16 ANT I at least 1.25 × its maximal width. MSL on ABD TERG II–IV are 35–55 μm and 1.5–2.0 × ANT III BD. On Silene spp........................................................................ A. delmasi Remaudière & Leclant

- ANT I at most 1.2 × its maximal width. MSL on ABD TERG II–IV at most 25 μm and 1.2 × ANT III BD.............. 17

17 Abdomen usually with spinopleural patch and separate marginal sclerites; if a discal plate is present then it has irregular margins and frequently there are windows in spinal areas of the thoracic, if integrated, and anterior abdominal segments. Dorsal patch or plate smooth and reticulated. SIPH dark brown to black, subcylindrical and usually straight, 1.8–2.0 × cauda, which is broad triangular and has 10–16 setae. URS with 6–10 accessory setae. On Silene spp......... A. ornata Hille Ris Lambers

- Characters not in above combination..................................................................... 18

18 MSL on ABD TERG II–IV and ANT III 3–8 μm and 0.15–0.50 × ANT III BD.................................... 19

- MSL on ABD TERG II–IV and ANT III 8–25 μm and 0.30–1.60 × ANT III BD; if they are 8 μm long then MTu on abdomen present or URS shorter than HTII....................................................................... 20

19 SIPH dark brown, head dorsum, mesosternal processes and cauda brown to dark brown. URS 1.15–1.25 × HTII. CAUDA L 1.4–1.8 × CAUDA W. On Gypsophila paniculata and Silene spp........................... A. pannonica Szelegiewicz

- SIPH (with smoked apex, head dorsum, mesosternal processes and cauda pale. URS as long as HTII. CAUDA L 1.0–1.1 × CAUDA W. On Gypsophila perfoliata ................................................... A. togaica Kadyrbekov

20 MTu on prothorax and abdominal segments 2–4 usually present and STu on abdominal segment VIII sometimes present.... 21

- MTu and STu on abdomen absent....................................................................... 22

21 Aphids relatively large (longer than 1.7 mm) and provided with an extensive, solid discal plate. Setae on ANT III, and on dorsum of head, ABD TERG II–IV and ABD TERG VIII at least 12, 15, 10 and 27 μm respectively. On Prunus prostrata .................................................................. A. libanensis Nieto Nafría, Blackman & Martin

- Aphids relatively small (shorter than 1.4 mm) with a broken pattern of dorsal sclerotisation. Setae on ANT III, and on dorsum of head, ABD TERG II–IV and ABD TERG VIII at most 8, 10, 8 and 15 μm respectively. On Prunus ........................................................................ A. iranensis Nieto Nafría, Mier Durante & Remaudière

22 SIPH pale, usually as pale as most part of tibiae............................................................ 23

- SIPH pigmented, usually darker than most part of tibiae...................................................... 24

23 PT 5.0–5.5 × ANT VI b. Cauda triangular or tongue-shaped with slight proximal constriction. URS shorter than HTII. On Gypsophila spp..................................................................... A. gypsophilae Mamontova

- PT 2.8–4.0 × ANT VI b. Cauda tongue-shaped. URS 1.23–1.45 × HTII. On Spergularia marina ............................................................................. A. urmiensis Nieto Nafría, Mier Durante & Remaudière

24 CAUDA L tongue-shaped, 1.40–1.80 × CAUDA W. Mesosternal processes more or less pigmented, usually darker than tibiae. On Dianthus spp. and Silene spp..................................................... A. picta Hille Ris Lambers

- Cauda triangular, although sometimes with a slight proximal constriction, CAUDA L 1.05–1.40 × CAUDA W. Mesosternal processes as pale as tibiae.............................................................................. 25

25 URS 0.90–1.00 × HTII, with 8–10 accessory setae. CAUDA L approximately 1.30–1.40 × CAUDA W. MSL on ABD TERG II–III are 8–11 μm and 0.3–0.5 × ANT III BD. On Silene lithophila ........................ A. massagetica Kadyrbekov

- URS 1.05–1.45 × HTII, with 10–16 accessory setae. CAUDA L approximately 1.05–1.35 × CAUDA W. MSL on ABD TERG II–III are 13–23 μm and 0.6–1.0 × ANT III BD. On Silene gallica and S. paradoxa ......................................................................................... A. gallica Nieto Nafría, Mier Durante & Remaudière