Lipaphis (Lipaphis) erdemi, Özdemýr, 2022

Özdemýr, Işil, 2022, New Lipaphis species (Hemiptera, Aphididae, Macrosiphini) from central Türkiye living on Sisymbrium sp. (Brassicaceae), Zootaxa 5183 (1), pp. 239-244 : 240

Lipaphis (Lipaphis) erdemi sp. n.

Types. Holotype: Type specimens are deposited at the one apterous and one wingless individual collection number 017058; in collections of the Nazife Tuatay Plant Protection Museum (Ankara, Türkiye). Apterous viviparous female, placed on a slide with a paratype, Türkiye, Ankara province, Temelli (Polatli), 39°44’00” N, 32°26’19” E, altitude 1029 m, 31.v.2001, Özdemir leg., collection of the Muséum national d’Histoire naturelle in Paris (France). Paratypes: Eight apterous and three alate viviparous females, same collecting data; collections of the Muséum national d’Histoire naturelle in Paris.

Etymology. The species is named after my son, Erdem Özdemir.

Apterous viviparous females (n=9) ( Figures 1 , 2 A–C and E ). Body oval, 2.24–2.50 mm long. When alive light yellowish green. Mounted specimens cream yellow, with clypeus, rostrum, legs, siphunculi, cauda and 2/3 distal parts of antennae darker than the rest, without segmental dorsal pigmentation except several small and pale spinal sclerites on abdominal segments 5 or 6 in some specimens. Setae very pale; those on dorsum of body, antennae, femora and mostly on tibiae very short, blunt or truncate and often widening to apex. Head with coarse and somewhat reticulated tegument, evidently rougher on conspicuous lateral and medial tubercles of frons, which have a similar height, and the medial one has a more or less deep middle notch. Dorsal cephalic setae (8) 10–18 µm and 0.4–0.8 times subarticular width of antennal segment III. Antennae 1.32–1.47 µm long, shorter that body (0.55–0.61 times). Antennal segments I and II rough and concolor with cephalic dorsum. Antennal segment III is 0.37–0.44 mm long, 0.9–1.1 times segments IV and V together (0.21–0.25 and 0.16–0.21 mm respectively), other relative measurement of this segment are: 1.3–1.6 times processus terminalis of antennal segment VI, 2.6–3.4 times ultimate rostral segment, 1.3–1.7 times siphunculus and 1.5–2.0 times cauda; it has two differentiated parts, the proximal part is concolor with segments I and II, dorsally almost smooth and ventrally somewhat striated; the distal part is darker and imbricated like to other segments of antennal flagellum; it carries 4–6 setae, which are 8–10 µm, 0.3–0.5 times of its subarticular width. Processus terminalis of antennal segment VI is 0.26–0.32 mm long, 1.8–2.3 times basis of the segment, which is 0.13–0.15 mm long; other relative measurement of the processus terminalis are: 1.9–2.3 times ultimate rostral segment and 0.9–1.2 times siphunculus. Primary rhinaria ciliated. Secondary rhinaria always present on antennal segment III and IV and in 50% specimens on segment V of at least one antenna, they have variable sizes, irregular contour and a usually thick flange; on III there are (12)20–32, disorderly placed on the ventral face and with greater density on the pigmented part; on IV they are 13–22, also disorderly placed on the ventral face and more numerous on distal half of segment; on segment V if they are present, there are 1–5 smaller than those on other segments. Rostrum reaches middle coxae, with long and pointed setae. Ultimate rostral segment 0.13–0.14 µm long, approximately 0.9 times second segment of hind tarsus 1,0 times basis of antennal segment VI and 0.5 times siphunculus; relatively narrow, 2.3–2.7 times its basal width and with 4 to 6 accessory setae. Legs rough, especially the dorsal face of distal part of femora; tarsi imbricated. Tarsal formula: 3.3.2. Trochanteral posterior setae of hind legs 15–20 µm and 0.2–0.3 times the trochantero-femoral suture. Femur of hind legs 0.59– 0.65 mm long, 0.24–0.28 times of body lenght, with setae on its dorsal face measuring 10–15 µm and 0.5–0.8 times subarticular width of antennal segment III, somewhat shorter than ventral ones. Tibia of hind legs 1,050 –1,175 mm long and 0.44–0.50 times body; its longer dorsal setae at middle length of the segment are 13–23 µm and 0.3–0.5 the width of the segment at the insertion point of the seta. Dorsum of thorax and abdomen is sclerotic, wrinkled and tenuously reticulate. The spiracular sclerites are more pigmented that surrounding cuticle but less than the intersegmental (muscular) sclerites, which are small. Some specimens have small spinal sclerites on abdominal segments 5 or 6. Usually small tubercles (2–5 on one side and 2–7 in all) developed on small marginal sclerites on several abdominal segments 2 to 5. Abdominal segments 2 to 4 with 1 or 2 marginal setae, which are 8–10 µm long and 0.3–0.4 times subarticular width of antennal segment III. Abdominal segment 8 with 4 or 5 setae, 10–18 µm long 0.4–0.8 times subarticular width of antennal segment III. Ventral abdominal setae much more longer than dorsal ones, blunt or pointed. Siphunculi rough and with marked flange, 0.25–0.29 mm long, 0.10–0.12 times body length, somewhat wider at base than the apex, gently tapering and apparently swollen in its distal third, because in this part the outer edge is almost straight while the inner edge is slightly convex outward, with a width ratio between the swollen part and the immediate proximal narrow part of 1.0 to 1.1 times. Sub genial plate pale, like the anal plate, with 3–4(10) discal and (8)12–18 posterior setae, all of them blunt and short, but longer than abdominal dorsal ones. Cauda triangular, without any constriction, 0.21–0.25 mm long, 1.3–1.9 its basal width, 0.8–0.9 times siphunculus, 1.5–1.9 times ultimate rostral segment, and carrying 5 or 6 long and pointed setae.

Figures

FIG. 1

FIG. 2