Aleuromarginatus similis Dubey

Dubey, Anil Kumar & Brown, Paul A., 2022, Six new species of Aleuromarginatus Corbett, 1935 and Paramarginatus sarawakensis Dubey gen. and sp. nov. (Hemiptera: Aleyrodidae) from Southeast Asia, Journal of Natural History 55 (41 - 42), pp. 2605-2649 : 2630-2634

Aleuromarginatus similis Dubey sp. nov.

( Figure 13 )– Figure 14 (i))

Puparium (n = 5, 3 female, 2 male)

Found lined along major veins. Elongate, slightly curved, vs right asymmetrical ( Figure 13 ), Figure 14 (a)), thoracic ( Figure 13 ), Figure 14 (c)) and caudal tracheal pore opening areas not modified into prominent combs or in the form of smaller teeth; broadest at abdominal segment II–III region; dimorphic, female puparia larger than the male; 2020–2100 µm long, 890–920 µm wide in female; 1150–1400 µm long, 480–620 µm wide in male.

Margin

Crenulate, a row of papillae overlapping true marginal crenulations, 9–12 submarginal papillae in 0.1 mm in female, 14–16 papillae in 0.1 mm in male.

Dorsum

Median length of cephalothorax (female 870–890 µm, male 600–640 µm) observed to be smaller than that of the abdomen (female 1150–1190 µm, male 750–760 µm). Median length of cephalothoracic and abdominal segments and caudal furrow greater in the female than the male. Mesothorax (female 62–64 µm long, male 42–44 µm long) longer than metathorax (female 52–54 µm long, male 35 µm long) medially, in both male and female. Median lengths of abdominal segments I–VIII in female: I 40–41, II 42–45, III 47–50, IV 50, V 48–49, VI 42–45, VII 20–21, VIII 30 µm; in male: I 25, II 25–28, III 32, IV 30–31, V 28–30, VI 27, VII 10–12, VIII 22–23 µm long. Median lengths for abdominal segments I–VIII observed as: III>/= IV> V> VI = II> I> VIII> VII. Abdominal segment sutures and depressions prominent ( Figure 13 )). A pair of longitudinal rows of tubercles extending from cephalic region to posterior of abdominal segment VIII, on submedian area these tubercles extending along the termination of cephalothoracic and abdominal segment sutures. Distance from posterior margin of vasiform orifice to caudal tracheal pore opening area 126–128 µm in female, 78 µm in male. Subdorsal and submedian setae 7 µm long. Thoracic tracheal furrows absent. Caudal tracheal furrow can be recognised from a distance by differentiated tubercles. Longitudinal moulting suture reaching margin and transverse moulting suture reaching submargin. Geminate pores present. Pockets discontinuous.

Vasiform orifice

Subcircular to subcordate, laterally expanded, inner lateral and posterior margin with crenulations ( Figure 13 ), Figure 14 (f)); 30–31 µm long, 29–30 µm wide in female; 25–26 µm long, 21–22 µm wide in male; operculum subcordate; covering more than half the length of the orifice; 16–19 µm long, 21 µm wide in female, 11 µm long, 15 µm wide in male. Lingula obscured.

Venter

Paired ventral eighth abdominal setae mediolateral of vasiform orifice ( Figure 13 ), Figure 14 (g)), 17–20 µm long, 17–26 µm apart in female, 9 µm long, 25 µm apart in male. Antennae extending to outside of prothoracic legs ( Figure 13 )), reaching near the prothoracic legs, length varies on left vs right sides, 48–63 µm long in female ( Figure 14 )), 45–52 µm long in male ( Figure 14 )). Thoracic and caudal tracheal folds absent. Adhesive pads and spiracles present.

Chaetotaxy ( Figure 14 , d,e))

Anterior marginal setae absent, posterior marginal setae 13 µm long. Dorsal setae 5–8 µm long. The submedian pair of setae on abdominal segment II dislocated to subdorsal area. The right-side seta of abdominal segment III also dislocated on subdorsum while the leftside seta remains submedian in position.

Host plant

Unidentified vine.

Material examined

Holotype ‘puparium’; West Malaysia, Pahang Province, Tiomen Island, near Kampung Tekek, four puparia in two rows (two in each row) under one coverslip, on vine, 18 February 1985, J.H. Martin (4518) ( NHM). Of the two puparia on the second row, the female puparium on the right is the holotype.

Paratypes

Data same as for the holotype. Twenty-five puparia (3 female with the holotype on slide 1; 5 female, 2 male on slide 2; 5 female, 1 male on slide 3; 4 female, 2 male on slide 4; 2 female, 1 male on slide 5) on five slides (4518) (also spirit collection in NHM) (NHM).

Distribution

Malaysia.

Etymology

The species is named ‘ similis ’ in rereference to its close similarity to A. corbettiaformis Martin.

Remarks

Puparia aligned along the major veins. The puparia of this species are similar to those of A. kallarensis but differ in having a more prominent dorsal submedian line made up of tubercles. The new species differs from A. corbettiaformis in large size, in having the inner margin of the vasiform orifice with prominent comb of teeth, operculum posteriorly expanded, covering more than half the length of the orifice and obscuring the lingula, and in lacking the submarginal row of tubercles (in A. corbettiaformis , the puparia are smaller, the vasiform orifice is little emarginated laterally, operculum truncated posteriorly, covering nearly half the length of the orifice, thus leaving the lingula completely exposed, and the submarginal row of tubercles are present).

Figures

Figure 13. Aleuromarginatus similis Dubey sp. nov., holotype puparium, line drawings: (a) dorsal view, tubercles, setae; (b) margin, submargin; (c) abdominal segments, submedian setae; (d) vasiform orifice; (e) prothoracic legs, antennae; (f) ventral setae (vasiform orifice area in dotted lines), spiracles.

Figure 14. Aleuromarginatus similis Dubey sp. nov., holotype puparium: (a) dorsal view, tubercles, setae; (b) abdominal segments I–IV; (c) margin, submargin; (d) abdominal segments V–VIII; (e) posterior abdominal area; (f) vasiform orifice; (g) ventral setae; (h) antenna, female; (i) prothoracic leg, antenna, male.