Aleuropleurocelus sampsoni Sánchez-Flores and Carapia-Ruiz, 2020

Sanchez-Flores, Oscar Angel, Carapia-Ruiz, Vicente Emilio, Coronado-Blanco, Juana Maria & Ruíz-Cancino, Enrique, 2020, Description of Aleuropleurocelus sampsoni sp. nov. (Hemiptera: Aleyrodidae) from Tamaulipas, Mexico, Florida Entomologist 103 (2), pp. 274-274 : 274-

Aleuropleurocelus sampsoni Sánchez-Flores and Carapia-Ruiz sp. nov. ( Figs. 1 & 2 )

PUPARIUM

Pupae on the underside of the leaves with a wide wax band between the submediate and subdorsal area ( Fig. 1a ) and another next to the marginal teeth ( Fig. 1c ), in addition to a wax cover that is not very visible but can be detached by mechanical action in the rest of the dorsal area, including the surface of the submarginal band, without clear transverse lines on the submarginal area.

Slides: Boat-shaped body, 550 to 700 μm long and 370 to 450 μm wide ( Fig. 1b ). Submargin deflected 100 to 130 μm in the widest part of the body.

Margin and submargin. Characteristically wide submargin arranged in mosaic form ( Fig. 2c ); weakly serrated apparent margin, true margin with semi-quadrangular teeth.

DORSUM

Cephalothorax. Eyes absent, although sometimes with discolored maculae, cephalic setae absent, mesothoracic and metathoracic setae present, and depressions absent on thorax. Molt with longitudinal suture as zipper ( Fig. 2b ) that goes from the transverse suture to near the cephalic-prothoracic suture (approximately 100 μm before the submarginal line), transverse suture of the molt extended from the midline to the sides at an angle of approximately 20 degrees, later to subdorsal area and then previously deflected at an approximate angle of 45 degrees in the direction of the apparent margin, ending on it, at a level almost of the meso-metathoracic suture ( Figs. 1b , 2a ).

Abdomen. Abdominal segments I–VIII clearly visible in the middle part with approximate length of: segment I - 37.5 μm; segment II - 30 μm; segment III - 32.5 μm; segment IV - 32.5 μm; segment V - 32.5 μm; segment VI - 30 μm; segment VII - 27.5 μm; from suture VIII to operculum - 50 μm; suture VIII to the vasiform orifice ring - 16 μm. Abdominal depressions absent, irregularly shaped semicircular tubercles that cover the submedian area of all abdominal segments, middle part of the abdominal segments with 4 rows of tubercles (some irregular), in each segment the rows vary in size and shape ( Fig. 2a ). Dorsal surface fully sculptured with irregularly tubercle shaped structures.

VASIFORM ORIFICE

Semicordiform ( Fig. 2d ), 56 μm long and 42 μm in the widest part; quadrangular operculum 23.5 μm long and 30 μm wide, completely covers the lingula and almost the entire length of the vasiform orifice, dorsal surface of the orifice with several groups of longitudinal grooves gives a characteristic sculpture; ring of the vasiform orifice is wide ( Fig. 2d ). Distance from the posterior margin of the vasiform orifice to the apparent margin (submarginal line) 21.5 μm, defined caudal protuberance and with caudal setae. Abdominal setae VIII anterolateral to the vasiform orifice.

PORES

As follows: 8 pairs on the cephalic area, 4 on each side of the midline; 4 pairs on the mesothorax, 2 on each side of the midline; 6 pairs on the metathorax, 3 on each side of the midline; medial area of segments I, III, IV, VII with 4 pairs each segment, segment VIII with 8 pairs; subdorsal area of abdominal segments III, IV, V, VI, and VII with 2 pairs of pores each segment; submarginal area with pores around the pupa closer to the apparent margin.

VENTER

Antenna extended to the base of the first pair of legs, prothoracic legs 60 μm long and 50 μm wide (base of the leg), mesothoracic legs 70 μm long and 30 μm wide in the basal segment, metathoracic legs 70 μm long and 32 μm wide, base of the legs smooth, without a band of spines, very thin velvety thoracic cuticle throughout the ventral part, a pair of adhesive sacs near the base of the first pair of legs, abdominal cuticle very smooth and velvety ( Fig. 1d ).

CHAETOTAXY

Anterior marginal setae present (emerging from the teeth), cephalic setae absent, mesothoracic and metathoracic setae present, setae on abdominal segment VIII approximately 10 μm long, located anterolateral of the vasiform orifice, caudal setae present approximately 20 μm long and marginal posterior setae inconspicuous.

Aleuropleurocelus sampsoni Sánchez-Flores & Carapia-Ruiz sp. nov. is one species included in the Aleuropleurocelus boat-shaped group. It can be separated from A. granulata in situ by the excretion of wax on the dorsum ( Fig. 1a ) that is not present in A. granulata ( Fig. 3a ), and in mounted specimens by the combination of characters: transversal lines in the submarginal area absent in A. sampsoni ( Fig. 2c ) and present in A. granulata ( Fig. 4c ); in A. sampsoni the zipper of the longitudinal suture goes from the transversal suture of the molt to the cephalic-prothoracic and does not reach the marginal area ( Fig. 2b ), in A. granulata the zipper reaches the middle of the submarginal area ( Fig. 4b ). In A. sampsoni , the transversal suture of the molt is extended from the midline to the sides, subsequently at an angle of approximately 20 degrees to the subdorsal, and then deviates anteriorly at an angle approximately 45 degrees anterior to the apparent margin, ending there, a little before the meso-metathoracic suture; in A. granulata the transversal suture of the molt is almost linear until the subdorsal line, there it anteriorly deviates approximately 40 degrees to the apparent margin of the meso-metathoracic suture; the vasiform orifice is elongated-oval in A. sampsoni ( Fig. 2d ) and oval-shaped in A. granulata ; spinerets absent at the base of the legs in A. sampsoni ( Fig. 3d ) but present in A. granulata ( Fig. 4d ). From Aleuropleurocelus ornatus Drews & Sampson ( Hemiptera : Aleyrodidae ), the new species can be separated because A. ornatus has a double wax strip on the dorsum and pores in the anterior part of the vasiform orifice, whereas A. sampsoni presents the 2 wax strips and no pores before the vasiform orifice.

ETYMOLOGY

The specific epithet of the species Aleuropleurocelus sampsoni Sánchez-Flores and Carapia-Ruiz sp. nov. is referred to W.W. Sampson, in recognition of his contribution to the knowledge of the family Aleyrodidae.

HOST PLANT

Figures

Fig. 1. Aleuropleurocelus sampsoni Sánchez-Flores & Carapia-Ruiz sp. nov.: (a) puparium in situ; (b) puparium mounted on slides; (c) puparium in situ, ventral view; (d) legs.

Fig. 2. Aleuropleurocelus sampsoni Sánchez-Flores & Carapia-Ruiz sp. nov.: (a) abdominal segments; (b) longitudinal suture of the molt; (c) submarginal area; (d) vasiform orifice.

Fig. 3. Aleuropleurocelus granulata (Sampson & Drews, 1941): (a) puparium in situ; (b) puparium mounted on slides; (c) puparium in situ, ventral view; (d) legs.

Fig. 4. Aleuropleurocelus granulata (Sampson & Drews, 1941): (a) abdominal segments; (b) longitudinal suture of the molt; (c) submarginal area; (d) vasiform orifice.