Aphis matricariae Barjadze and Özdemir, 2014

Barjadze, Shalva, Özdemir, Işil & Blackman, Roger, 2014, Two new species of Aphidini Latreille, 1802 (Hemiptera: Aphididae) from Turkey, Zootaxa 3873 (2), pp. 187-194 : 191-193

Aphis matricariae Barjadze and Özdemir sp. n.

( Figures 14–24 , Table 1 )

Material examined. Holotype: apterous viviparous female, slide N 0 3787, specimen No. 1 (lower specimen on the right side), Northern Turkey, Çankırı Province, Ilgazdağ, N 41 0 0 5/, E 33 0 44 /, 1100 m a.s.l., 24.VI.1966; on Matricaria sp., leg. G. Remaudiére; Paratypes: 3 apterous and 2 alate females on two slides, the same data as for holotype. Type specimens are deposited at the Natural History Museum in London ( BMNH).

Etymology. The specific name is derived from a noun, the genus name of the host plant of the aphid, Matricaria (Asteraceae) , in genitive.

Description. Apterous viviparous females (4 specimens /1 sample).

Color in living specimens: unknown. Color on slide: ANT I, II, V and VI brown; ANT III pale; ANT IV pale except apices, head, rostrum, coxae and trochanters brown; femurs brown except basal parts; tibiae brown except apices; tarsi brown (fig. 21); SIPH and cauda brown, concolorous; subgenital and anal plates brown; ABD TERG VII–VIII with dusky bands; presiphuncular and postsiphuncular sclerites absent; in pigmented form: intersegmental gland sclerites present on ABD TERG I–V; different sized and shaped sclerites are developed on ABD TERG I–V, from which relatively large ones are on ABD TERG IV–V; in pale form: intersegmental gland sclerites and sclerites on ABD TERG I–V absent (figs. 14–15).

Morphological characters: body oval (figs. 14–15); BW 0.68–0.73× BL. ANT 5- or 6-segmented (in one of the four specimens one antenna is 5-segmented and the other 6-segmented). PT 1.65–2.04× ANT VI b. ANT III without sec. rhin. (fig. 22). Number of hairs on each ANT segment: ANT I 4–5, ANT II 4, ANT III 3–7, ANT IV 3–4, ANT V 2–4, ANT VI b 2–3, PT 1–2 (additional). Frons with w-shaped outline in dorsal view. Rostrum reaches beyond middle coxae. URS pointed, with 2 accessory hairs (fig. 18), its length 0.90–0.97× ANT VI b and 0.84–0.87× HT II. Posterior hair on hind trochanter 0.80–1.12× diameter of trochantro-femoral suture. HTC: 3:3:2. ABD TERG I and VII with small mammariform MTu (21–35 µm of diameter). Marginal hair on ABD TERG I 0.70–0.96× diameter of the MTu on the same tergite, ABD TERG II–VI without MTu. Diameter of MTu on ABD TERG I 1.09–1.52× ANT III BD and 0.79–1.29× diameter of MTu on ABD TERG VII. Diameter of MTu on ABD TERG VII 0.88–1.38× ANT III BD and 0.30–0.47× basal width of SIPH. SIPH cylindrical, strongly imbricated, with normal flange (fig. 20), its length 2.20–3.22× its width in the middle and 0.65–0.80× cauda. ABD TERG VIII with 2 hairs. Subgenital plate oval, with spinulose imbrications and 2–3 hairs on the anterior disc and 8–12 hairs on posterior margin (fig. 17). Cauda finger-like, parallel-sided on distal two-thirds and bearing long, curved 7–8 hairs and numerous strong black spinules (fig. 19). Morphometric data are given in Table 1 .

Alate viviparous females (2 specimens /1 sample)

Color in living specimens: unknown. Color on slide: Head and all ANT segments, thorax, rostrum, coxae, trochanters, SIPH, subgenital and anal plates and cauda brown, femurs brown except basal parts; tibiae brown except apices; tarsi brown; ABD TERG I–VI with different shaped and sized sclerites or spinopleural bars on some tergites; ABD TERG II–IV with marginal sclerites; presiphuncular and postsiphuncular sclerites developed; ABD TERG VII–VIII with dark bands (fig. 16).

Body oval (fig. 16). ANT 6-segmented. PT 1.94–2.34× ANT VI b. ANT III with different sized 13–16 sec. rhin. (fig. 24), which are scattered on the outer side along the whole length of this segment; ANT IV with 0–1 sec. rhin.; ANT V with 0 sec. rhin. (fig. 23). Number of hairs on each ANT segment: ANT I 5, ANT II 4, ANT III 6–11, ANT IV 6–9, ANT V 5–6, ANT VI b 3, PT 2–3 (additional). URS pointed, with 2 accessory hairs, its length 0.61–0.72× ANT VI b and 0.71–0.75× HT II. Posterior hair on hind trochanter 0.71–0.91× diameter of trochantrofemoral suture. HTC: 3:3:2. ABD TERG II–IV with 0–1 marginal tubercles, ABD TERG V–VI without marginal tubercles. SIPH as in apterous females. SIPH 4.23–4.64× its width in the middle and 1.11–1.14× cauda. ABD TERG VIII with 2 hairs. Subgenital plate oval, with spinulose imbrications and 2–3 hairs on the anterior disc and 7 hairs on posterior margin. Cauda finger-like, with a constriction in the middle, with 9–10 hairs. Morphometric data are given in Table 1 .

Biology. Other morphs and life cycle are unknown.

Distribution. Only known from the type locality in Ilgazdağ, Çankırı Province, Northern Turkey.

Figures

FIGURES 14 – 24. Aphis matricariae sp. n. 14: pigmented apterous viviparous female (scale bar = 500 Μm); 15: unpigmented apterous viviparous female (scale bar = 500 Μm); 16: alate viviparous female (scale bar = 250 Μm); 17 – 22: apterous viviparous female. 17: subgenital plate (scale bar = 50 Μm); 18: URS (scale bar = 50 Μm); 19: cauda (scale bar = 50 Μm); 20: posterior part of body with SIPH and cauda (scale bar = 200 Μm); 21: hind tarsus (scale bar = 50 Μm); 22: ANT (scale bar = 200 Μm); 23 – 24: alate viviparous female. 23: ANT IV – VI (scale bar = 200 Μm); 24: ANT I – III (scale bar = 200 Μm).