Trabutina crassispinosa Borchsenius

MOGHADDAM, MASUMEH & WATSON, GILLIAN W., 2022, The Scale Insects Of Iran (Hemiptera: Coccomorpha) Part 2 The Mealybugs (Pseudococcidae And Rhizoecidae) And Putoidae, Zootaxa 5126 (1), pp. 1-169 : 130-132

Trabutina crassispinosa Borchsenius

( Fig. 59 , Plate 3 B , distribution map Fig. 70 J )

Trabutina crassispinosa Borchsenius, 1941: 133 .

Field characteristics: Body of live adult female broadly oval, about 1.8‒3.8 mm long and 1.5‒2.2 mm wide. Ovisac soft and elastic, cream coloured, dorsomedial area with a band of white wax from anterior to posterior ends of sac and dark areas surrounding anal opening. The eggs are white ( Danzig & Miller 1996).

Microscopic diagnosis: Slide-mounted adult female broadly oval to rotund. Antennae each with 6 segments. Legs well developed; hind leg with coxa, and sometimes hind tibia, swollen; with translucent pores on coxa; tarsal digitules pointed at tip and longer than claw. Anal lobe cerarii (C 18) each containing 4‒8 conical setae, each seta with a narrowed base, no filamentous setae, and unconcentrated basal trilocular pores; C 17 and C I6 sometimes recognisable. Circulus absent. Ostioles present. Anal ring incomplete, V-shaped, bearing 8 setae.

Dorsum with setae on posterior segments normally conical, each with a narrowed base; conical setae present from abdominal segments I and II‒VII. Anal ring surrounded by 14−25 long setae. Multilocular disc pores present on metathorax and all abdominal segments. Trilocular pores most abundant near posterior end of abdomen, absent from lateral areas of anterior abdominal segments; on thorax, most abundant near segmental lines; increasingly abundant near anterior ostioles and on head. Discoidal pores each with an irregular margin, all same size, small numbers scattered over surface, with 1‒4 pores associated with the cluster of long setae near anal ring. Oral collar tubular ducts of 1 or 2 sizes: smaller size in medial areas of abdomen; ducts gradually increasing in size laterally, abundant, most numerous on anterior of abdomen, meta- and mesothorax.

Venter with setae becoming progressively shorter anteriorly. Multilocular disc pores each with 10 loculi, present in transverse bands from mesothorax to abdominal segment VIII, also present on submargins of posterior segments; sometimes present near mouthparts. Trilocular pores absent from abdomen, except near segmental lines on anterior segments; present near coxae, spiracles, mouthparts, and antennae. Discoidal pores, each with an irregular margin, uncommon, most abundant submarginally. Oral collar tubular ducts all same size, most abundant on submarginal and marginal areas of abdomen, becoming increasingly sparse on thorax and head, where they form clusters . Vulva flanked by 2 inconspicuous lobes, 1 on each side of segment VIII; pores, setae, and tubular ducts not concentrated on lobes.

Distribution: Trabutina crassispinosa has been recorded from 11 countries in the Palaearctic Region including Iran, where it has been found in Ardabil province ( Moghaddam 2013a).

Host-plants: The species has been recorded on Tamarix species (Tamaricaceae) ( García Morales et al. 2016).

Economic importance: None in Iran.

Natural enemies: In Iran, Jalilvand et al. (2014) recorded Exochomus nigromaculatus Goetze ( Coleoptera : Coccinellidae ) preying on T. crassispinosa .

Comments: The illustration is reproduced from Ter-Grigorian (1973), page 118, Fig. 59 .

Figures

PLATE 3.A. Pseudococcus viburni (Signoret); B. Trabutina crassispinosa Borchsenius; C. Trabutina mannipara (Hemprich & Ehrenberg); D. Trabutina serpentina (Green); E. Vryburgia amaryllidis (Bouché); F. V. amaryllidis damage on Amaryllis sp. (Amaryllidaceae).

FIGURE 59. Adult female of Trabutina crassispinosa Borchsenius.

FIGURE 70. Maps of species distributions in Iran. A. Planococcus vovae (Nasonov); B. Pseudococcus comstocki (Kuwana); C. Pseudococcus longispinus (Targioni Tozzetti); D. Pseudococcus viburni (Signoret); E. Rhodania aeluropi Williams & Moghaddam; F. Saccharicoccus sacchari (Cockerell); G. Spilococcus alhagii (Hall); H. Spilococcus mirzayansi (Moghaddam); I. Spilococcus williamsi sp. n.; J. Trabutina crassispinosa Borchsenius; K. Trabutina mannipara (Hemprich & Ehrenberg); L. Trabutina serpentina (Green).