Chorizococcus ozeri Zarkani & Kaydan, 2023

Zarkani, Agustin, Fauzi, Ariffatchur, Apriyanto, Dwinardi & Bora Kaydan, Mehmet, 2023, Mealybugs (Hemiptera, Coccomorpha, Pseudococcidae) on parasitic plants (Loranthaceae) in Indonesia with description of a new species and a new country record, ZooKeys 1167, pp. 199-210 : 199

Chorizococcus ozeri Zarkani & Kaydan sp. nov.

Figs 1 , 2

Material examined.

(all deposited at MMUB). Holotype. Adult female, left label: AZ1204, 13.vii.2022, Indonesia, Sumatra, Bengkulu, ex Loranthus sp., 03°45'10″S, 102°16'59″E, 120 m a.s.l.; right label: Chorizococcus ozeri Zarkani & Kaydan, 3 ♀♀, coll. A. Zarkani, det. M.B. Kaydan. The holotype specimen is ringed with red ink on the coverslip . Paratypes. 3 ♀♀, Indonesia: (AZ1205), same data as holotype; 3 ♀♀, AZ206, Sumatra, Bengkulu on semi-parasitic plant, Loranthus sp. ( Loranthaceae ), living on avocado ( Persea americana Mill.), 03°45'10″S, 102°16'59″E, 13.vii.2022, coll. A. Zarkani.

Description of adult female.

Appearance in life (Fig. 1 ). Adult females produce a powdery white wax covering the dorsal surface of their bodies. Living on parasitic roots, branches, leaves, and flowers of its host plant, commonly attended by ants of the genus Dolichoderus Lund.

Slide-mounted adult female (based on the holotype and 3 paratypes) (Fig. 2 ). Body oval, 2.25-2.28 mm long, 1.40-1.50 mm wide. Eyes situated on margins, each 17.5-30 μm wide. Antenna 7 segmented, 370-380 μm long, with 4 fleshy setae, each 20-25 μm long; apical segment 87.5-92.5 μm long, 30.0-32.5 μm wide, with apical seta 30.0-32.5 μm long. Clypeolabral shield 112.5-132.5 μm long, 87.5-100 μm wide. Labium 3 segmented, 67.5-87.5 μm long, 67.5-75.0 μm wide. Anterior spiracles each 57.5-75.0 μm long, 30.0-42.5 μm wide across atrium; posterior spiracles each 62.5-75.0 μm long, 32.5-37.5 μm wide across atrium. Circulus rounded or quadrate, 11.3-12.5 μm wide. Legs well developed; segment lengths for each posterior leg: coxa 125-175 μm, trochanter + femur 237.5-307.5 μm, tibia + tarsus 225-300 μm, claw 25.0-27.5 μm. Ratio of length of tibia + tarsus to trochanter + femur, 0.95-0.98: 1; ratio of length of tibia to tarsus, 1.81-2.16: 1; ratio of length of trochanter + femur to greatest width of femur, 3.8-4.39: 1; coxa with translucent pores, femur and tibia without translucent pores. Tarsal digitules capitate, each 37.5-50.0 μm long. Claw digitules capitate, each about 20.0-22.5 μm long. Both pairs of ostioles present, anterior ostioles each with a total for both lips of 6-11 trilocular pores and without setae; posterior ostioles each with a total for both lips of 6-9 trilocular pores and without setae. Anal ring about 80.0-87.5 μm wide, bearing 6 setae, each seta 87.5-100.0 μm long.

Dorsum. Derm membranous, with 13 pairs of cerarii around body margin, each cerarius with enlarged conical setae set up in 2 rows and each with 1 auxiliary setae. Each anal lobe cerarius set on membranous cuticle and containing 2 enlarged conical setae, each 15-25 μm long, plus 8-10 trilocular pores and 2-3 hair-like auxiliary setae, each about 10-12 μm long. Dorsal setae conical, thinner than most cerarian setae, each 5.0-7.5 μm long, median setae 10.0-12.5 μm long, scattered throughout dorsum. Trilocular pores, each 2.5-3.8 μm in diameter, scattered. Multilocular disc pores and tubular ducts absent.

Venter. Setae flagellate, each 87.5-122.5 μm long, longest setae located medially on head. Apical setae on anal lobes unusually short, each 125.0-127.5 μm long. Multilocular disc pores, each 6.25-7.5 μm in diameter, present on abdominal segments, distributed as follows (mean numbers): IV: 18, V: 42, VI: 44, VII: 28, and VIII: 18. Trilocular pores, each 2.5-3.8 μm across, scattered throughout venter. Oral collar tubular ducts with two types: large type each 7.5-10.0 μm long, 2.5-3.1 μm wide, present one on each marginal abdominal segments V-VIII and mesothorax, and more abundantly on mid areas of thorax.

Comments.

Chorizococcus ozeri is most similar to Chorizococcus srinagaricus Williams in having no oral rim tubular ducts on the venter; dorsal rim tubular ducts few, present mainly either in medial areas or marginal areas. However, C. ozeri can be distinguished from C. srinagaricus in having (character states for C. srinagaricus given in parentheses): (i) oral rim tubular ducts present mainly in marginal areas of dorsum (mainly in medial areas of dorsum); (ii) oral collar tubular ducts absent on dorsum (present); (iii) ventral oral collar tubular ducts present around abdomen only (present on entire body surface); (iv) large discoidal pores absent from venter (present); and (v) translucent pores on hind coxa present (absent).

It is also similar to Chorizococcus sorgi Williams in lacking oral collar tubular ducts entirely from ventral margins of head and thorax; multilocular disc pores and oval collar tubular ducts absent from the area lateral to each first coxa. However, C. ozeri can be distinguished from C. sorgi in having (character states for C. sorgi given in parentheses): (i) cerarii confined to anal lobes only (present on at least 3 posterior cerarii); (ii) no oral rim tubular ducts on venter (oral rims present on venter); and (iii) multilocular disc pores in two rows on venter (in one row).

Etymology.

This species is named after Emin Ozer (Business Sustainability Lead Turkiye, Syngenta Tarim San. ve Tic. A. Ş., Yeni Mahalle 87071 Sk. Bozkurtlar Rezidans No: 52 K/D:12/25, Seyhan - Adana / TURKIYE), one of the best partners and mentor of the Kaydan’s Laboratory.

Host plants.

Loranthus sp. ( Loranthaceae ) (Fig. 2 ).

Distribution.

Indonesia (Sumatra, Bengkulu Province).

Figures

Figure 1. Adult female of Chorizococcus ozeri Zarkani & Kaydan, sp. nov., holotype.

Figure 2. An aggregation of Chorizococcus ozeri Zarkani & Kaydan, sp. nov., on a semi-parasitic plant, Loranthus sp. (Loranthaceae), living on an avocado (Persea americana Mill.), in Bengkulu Province, Sumatra (03 ° 45 ' 10 ″ S, 102 ° 16 ' 59 ″ E).