Heterobrevennia gullanae Kaydan

Kaydan, Bora, 2011, Revision of Heterococcopsis Borchsenius (Hemiptera: Coccoidea: Pseudococcidae), with description of a new genus with two new species from Turkey, Zootaxa 2970, pp. 49-62 : 54-56

Heterobrevennia gullanae Kaydan sp. nov.

Material examined: Holotype adult female, Turkey, VAN-Gevaş, N: 38°16’663’’, E: 043°03’898’’, 1834 m altitude, on the leaf sheaths of Poaceae, M.B. Kaydan , 09.vi.2009 ( CCVT: 4530). Deposited in CCVT.

Paratype adult females, same data as holotype, 5 specimens on 5 slides (4 Slides in CCVT: 4530 plus 1 in ZIAS).

Adult female ( Fig. 2)

Live appearance: Body oval. In the leaf sheaths of grasses.

Mounted material. Body elongate oval, 2.80–3.18 mm long, 1.12–1.25 mm wide. Eye marginal, 30–35 µm wide. Antenna 8 segmented (rarely 7 segmented, when 2nd - and 3rd -antennal segments fused), 255–270 µm long; apical segment 40–45 µm long, 20.0–22.5 µm wide, with apical seta 30 µm long, plus 3 fleshy setae, each 15.0– 27.5 µm long. Clypeolabral shield 130–140 µm long, 102.5–110.0 µm wide. Labium 67.5–70.0 µm long, 60.0– 67.5 µm wide. Anterior spiracles 40.0–47.5 µm long, 20–25 µm wide across atrium; posterior spiracles 45–55 µm long, 30–35 µm wide across atrium. Legs well developed; coxa 80–95 µm long, hind trochanter + femur 175–195 µm long, hind tibia + tarsus 210–230 µm long, hind claw 20.0–22.5 µm long. Ratio of lengths of hind tibia + tarsus to hind trochanter + femur 1.15–1.24:1, ratio of lengths of hind tibia to tarsus 1.91–2.21:1, ratio of length of hind trochanter + femur to greatest width of femur 5.0–5.3:1. Tarsal digitules setose, each 20–25 µm long. Claw digitules subequal, each 22.5–25.0 µm long, knobbed and thicker than tarsal digitules. Translucent pores present on femur and tibia of hind legs, totalling 12–26. Both pairs of ostioles present, posterior ostioles each with 7–10 trilocular pores plus 0–3 setae, anterior ostioles with 4–6 trilocular pores and 1 seta. Anal ring 55–60 µm wide, with 6 anal-ring setae, each 55–65 µm long.

Dorsum. Cerarii numbering 6 pairs, with pairs on posterior 3 abdominal segments plus 3 anteriorly on head; anal lobe cerarii, each with 2 conical setae, each 15.0–20 µm long, plus 4 or 5 trilocular pores; C17 each with 2 conical setae, each 15.0–17.5 µm long, plus 2 trilocular pores; C16 each with 2 conical setae, each 10.0–12.5 µm long, plus 1 trilocular pore; C1 each with 2 conical setae, each 7.5–10 µm long, plus 2 trilocular pores; C2 each with 2 conical setae, each 7.5–10 µm long, plus 2 trilocular pores; C3 each with 3 conical setae, each 7.5–10 µm long, plus 2 trilocular pores. Dorsal body setae spine-like, each 7.5–15.0 µm long, becoming shorter posteriorly. Multilocular pores each 6.0–7.5 µm wide with more than 10 loculi, in rows on posterior 3 abdominal segments, and on margin of remaining abdominal segments and thorax; also with 2 pairs groups on head: 1 pair each with 12–19 pores close to antennae, and other pairs each with 11–15 pores nearer anterior ostioles. Quinquelocular pores, each 5–6 µm wide, scattered throughout. Trilocular pores, each 5–6 µm in diameter, scattered throughout. Minute discodial pores few, each 2 µm in diameter, scattered on body surface. Oral-collar tubular ducts, each 9–11 µm long, 2–3 µm wide, scattered on all abdominal segments and along body margin on thorax.

Venter. Body setae slender, each 10–45 µm long, longest setae medially on head; apical anal lobe setae 120.0– 137.5 µm long. Multilocular disc pores each 7.5–8.0 µm in diameter, present in rows or bands on posterior abdominal segments (IV – VIII + IX): 6–8 pores on segment IV, 26–37 pores on segment V, 48–69 pores on segment VI, 58–62 on segment VII, 34–42 on segments VIII + IX. Quinquelocular pores each 4–5 µm wide, scattered throughout. Trilocular pores each 5–6 µm in diameter, restricted to around spiracle atrium. Minute discodial pores, each 2 µm in diameter, scattered throughout. Oral-collar tubular ducts each 9–11 µm long, 2.5–3.0 µm wide, present in rows or bands on posterior abdominal segments plus a few near margins on head and thorax; distributed as follows: 2–4 on each side of abdominal segments I–III; 8–12 on IV; 31–38 on V; 40–53 on VI; 34–42 on VII, and 4–10 on VIII.

Comment. The adult female of Heterobrevennia gullanae Kaydan is unique for a species in the Heterococcusgroup in having the following combination of features: (i) many quinquelocular pores on both the dorsum and venter, (ii) short hair-like tarsal digitules, (iii) claw digitules capitate, thicker than tarsal digitules, (iv) many multilocular pores on venter, (v) translucent pores present on both femur and tibia, (vi) two groups of multilocular pores on dorsum of head, (viii) six pairs of cerarii, 3 on head and 3 posteriorly on abdomen, (ix) many oral-collar tubular ducts on the venter and dorsum, and (x) the presence of trilocular pores throughout the dorsum.

Heterobrevennia gullanae resembles H. opertus in having most of the above features but H. gullanae differs in having the following combination of characters (characters of H. opertus in brackets): (i) two groups of multilocular pores on the head (absent), (ii) cerarii numbering 6 pairs (7), (iii) many trilocular pores present throughout dorsum (trilocular pores on dorsum few, generally restricted to posterior abdominal segment, and in cerarii and ostioles), (iv) antennae 8, rarely 7 segmented (9 segmented). Heterobrevennia gullanae is also similar to H. kozari Kaydan spec. nov., described below, but differs in having (character states for H. kozari in brackets): (i) 6 pairs of cerarii (5), (ii) translucent pores on coxa absent (present), and (iii) one size of oral-collar tubular ducts on dorsum (two sizes medially on posterior abdominal segment).

Etymology. The new species is named in honor of Prof. Dr. Penny Gullan (Division of Evolution, Ecology & Genetics Research School of Biology, The Australian National University, Canberra, Australia), for her valuable studies on all aspects of coccidology.