Paramarginatus 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 : 2642

Paramarginatus Dubey gen. nov.

( Figure 19 )– Figure 20 (g))

Type species

Paramarginatus sarawakensis Dubey sp. nov., by monotypy and present designation. Gender: masculine.

Diagnosis

Elliptical. Margin crenulate. Thoracic and caudal tracheal pore opening areas not modified in the margin. Median-submedian area with wax gland patches. Longitudinal moulting suture reaching anterior margin. Transverse moulting suture reaching submedian area. Metathorax smaller than mesothorax in median length. Pro-mesothoracic suture not defined. Abdominal segment sutures reaching subdorsal area. Median length of abdominal segment suture VII not reduced medially. Thoracic tracheal furrows absent. Caudal tracheal furrow not so prominent. Vasiform orifice triangular; operculum little more than half length of the orifice; lingula exposed, a pair of long setae subapically. Cephalic and the first abdominal setae absent, eighth abdominal and caudal setae present.

Etymology

The genus is named ‘ Paramarginatus ’ to indicate its similarity to Aleuromarginatus .

Remarks

The new genus differs from Aleuromarginatus in the reduced median length of the metathorax, abdominal segment sutures reaching the outer subdorsal area, transverse moulting suture not reaching the margin, the distribution of dorsal setae, having anterior marginal setae and median-submedian wax gland patches, lacking cephalic and first abdominal setae, and having paired submedian lateral longitudinal furrows and wax glands at base of marginal teeth. Puparia of this species are not congeneric with those of the genus Aleuromarginatus ; in particular they lack the typical distribution of dorsal hook-shaped setae and submarginal papillae. Puparia of this new genus are similar to those of Chitonaleyrodes Martin, 1999 in the absence of cephalic and first abdominal setae, abdominal segments not reduced in middle length and intersegmental sutures reaching the subdorsum on the abdomen, but differ in the presence of a caudal furrow, triangular vasiform orifice, exposed lingula and wax gland patches on abdominal segments I–VII. Puparia of this new genus also differ from the genus Zaphanera Corbett, 1926 in not having black puparia and anteriorly curved transverse moulting suture,in having a triangular vasiform orifice, and in having lingula not elevated posteriorly and exposed. Two Australian Zaphanera species ( Z. rhachisreticulata Martin, 1999 ; Z. wariensis Martin, 1999) having black puparia, a curved transverse moulting suture and the posteriorly elevated vasiform orifice bearing wax glands on abdominal segments are not assignable to Paramarginatus gen. nov. The new genus differs from the genus Aleuroglandulus Martin, 1999 in having the cephalothorax smaller than abdomen, crenulated margin, in extension of abdominal segment sutures, submedian area of abdominal segment I–VIII with glands, abdominal segment VII not reduced medially and the first abdominal setae absent.

Figures

Figure 19. Paramarginatus sarawakensis Dubey gen. and sp. nov., holotype puparium, line drawings: (a) dorsal view; (b) margin; (c) abdominal segments, wax glands; (d) vasiform orifice, lingula.

Figure 20. Paramarginatus sarawakensis Dubey sp. nov., holotype puparium: (a) dorsal view; (b) cephalothorax; (c) margin; (d) abdominal wax glands; (e) abdominal segment sutures, glands; (f) vasiform orifice, lingula; (g) ventral setae.