Cockerelliella setosus Dubey, 2020

Dubey, A. K., 2020, Description of a new species of the genus Cockerelliella Sundararaj et David, 1992 (Hemiptera: Aleyrodidae) from the Little Andaman Island, India, Far Eastern Entomologist 415, pp. 1-8 : 3-6

Cockerelliella setosus Dubey , sp. n.

http://zoobank.org/NomenclaturalActs/ 8F84630E-598B-4CC2-9A28-B1929277631F

Figs 1–11

TYPE MATERIAL. Holotype – one female puparium on slide, India: Andaman and Nicobar Islands, Little Andaman Island , 10º40′41.83′′ N, 92º32′29.86′′ E, on

Aporosa octandra , 2.II 2020, leg. A.K. Dubey ( ZSI). Paratypes: six puparia on four slides, data same as the holotype ( ZSI, NFIC) .

DESCRIPTION. Puparium. White; shiny; dorsally flat; without secretion of wax; broadly rounded anteriorly, posteriorly narrow ( Figs 1 , 3 ); dimorphic, female

870–880 microns long, 700–770 microns wide; male 700–780 microns long, 540–

680 microns wide. Found singly on the underside of leaves, only one puparium per leaf.

Margin. Smooth. Thoracic and caudal tracheal pores indicated in the margin as

C-shaped invaginations. Thoracic tracheal furrows absent. Caudal tracheal furrow present, inner margins of furrow with 10–11 crenulations, furrow filed with micro-

tubercles ( Figs 1 , 10 ).

Dorsum. Cephalothorax separated from the dorsal disc by a suture, suture not extending to abdominal region. Median length of cephalothorax and abdomen 375–

475 and 360–460 microns long, respectively. Median length of abdominal segment

I-VII: 47–50, 40–45, 37–40, 35–37, 33–37, 32–37, 30–33, 40–43 microns long,

respectively. Seven pairs of submarginal setae, one pair located each lateral to pro-

thorax, above thoracic tracheal pores, meso-metathoracic suture or on metathorax,

first abdominal segment, segment suture V/VI or segment VI, pockets or below,

and two pairs on caudal region. Caudal furrow 118 microns long in female, 100–

103 microns long in male. Geminate pores present in four rows, one row each along the submargin and submedian area and two rows in middle of these on subdorsal area. Two pairs of geminate pores present on the first abdominal segment, between metathoracic legs.

Vasiform orifice. Subcordate ( Figs 2 , 10 ), 22–28 microns long, 35–38 microns long, inner margin smooth; operculum subcordate, entirely covering the orifice and obscuring the lingula, 20–25 microns long, 35–38 microns wide.

Venter. Narrow submarginal area demarcated by a fold. Paired ventral eighth abdominal setae 10–13 microns long, apart 30–45 microns. Antennae extending through inside prothoracic legs and reaching near base, 14 (5 microns keel) microns long. Adhesive sacs and spiracles visible.

submarginal caudal end.

Chaetotaxy. Cephalic and caudal setae exceptionally longer than the eighth abdominal setae, 96 and 82–92 microns long, respectively. Eighth abdominal setae cephalolateral to vasiform orifice, 7–10 microns long, 43–48 microns apart. First abdominal setae absent. Anterior and posterior marginal setae prominent, 20–23

and 17–25 microns long, respectively. Submarginal setae 11–13 microns long.

tracheal pore; 6 – cephalothorax; 7 – cephalic seta; 8 – submedian tubercles; 9 – abdominal segments; 10 – vasiform orifice, caudal furrow, caudal pore; 11 – ventral setae, caudal fold.

HOST PLANT. Pyllanthaceae: Aporosa octandra (Buch.-Ham. ex D. Don)

Vickery.

DISTRIBUTION. India: Andaman and Nicobar Islands, Little Andaman Island.

ETYMOLOGY. The species epithet ‘ setosus ’ is attributing exceptionally long dorsal setae.

DIAGNOSIS. Puparia of the Cockerelliella setosus sp. n. differ from all the

Indian congeners in having much longer cephalic and caudal setae compared to the eighth abdominal setae, combined with narrow submarginal ventral fold and submedian row of tubercles. It differs from C. dioscoreae from India ( Sundararaj &

David, 1992), C. schimae Lalneihpuia et Sundararaj, 2011 and C. williamsoni

Lalneihpuia, 2011 in Chhakchhuak et al. (2011) from India in longer dorsal setae,

structure of caudal furrow, also from later two in shape and dorsal sculpture. The new species differs from C. psidii (Corbett, 1935) described from Malaysia (Corbett,

1935) in shape, longer cephalic setae reaching beyond cephalothoracic furrow,

ventral fold and in lacking a ring of papilla-like markings on the submargin; and from C. kamardini (Corbett, 1935) known from Malaysia (Corbett, 1935) in shape,

larger size, shape of caudal furrow and in lacking submarginal ventral fold. Among these C. psidii has median patch on metathorax and abdominal segment I. I also believe that the longer cephalic and caudal setae are not host-correlated variations as only these two setae were longer and the host plant has smooth surfaces of leaves.

Figures

Figs 1, 2. Cockerelliella setosus sp. n.: 1 – holotype puparium; 2 – vasiform orifice and

Figs 3–11. Cockerelliella setosus sp. n., holotype: 3 – puparium; 4 – margin; 5 – thoracic