Lizerius jorgei, Cunha & Sousa-Silva, 2019

Cunha, Suzan B. Z. & Sousa-Silva, Carlos R., 2019, A new species of Lizerius Blanchard (Hemiptera: Drepanosiphidae) from Brazil, Iheringia, Série Zoologia (e 2019022) 109, pp. 1-5 : 2-4

Lizerius jorgei sp. nov.

( Figs 1-10 )

urn:lsid:zoobank.org:act:2ADD1B26-C043-4FA4-AB53- E9782CDDABBF

Type material. Holotype: BRAZIL, São Paulo: Porto Ferreira ( Porto Ferreira State Park ), ♀ apterous viviparous, 21.I.2016, collected in T. brasiliensis , J. L. Cunha Col. ( COLEAFIS-DEBE ). The holotypeis a specimenindicated by number 11 in a microscope slide numbered 1057 deposited in the Aphid Collection of Departamentode Ecologia e Biologia Evolutiva, Universidade Federal de São Carlos (COLEAFIS- DEBE/UFSCar) . Paratypes: BRAZIL, São Paulo: Pedregulho ( Furnas of Bom Jesus State Park ), 8♀ apterous viviparous + 2♀ alate viviparous and ♂ alate, 21.I.2016, collected in P. americana , J. L. Cunha Col. ( COLEAFIS – DEBE) ; 6♀ apterous viviparous + 3♀ alate viviparous, 21.I.2016, collected in T. brasiliensis , J. L. Cunha Col. ( IBSP) ; 6♀ apterous viviparous + 3♀ alate viviparous, 21.I.2016, collected in T. brasiliensis , J. L. Cunha Col. ( DZUP) .

Etymology: This new species is named in honor of the aphid collector Jorge Luís da Cunha.

Diagnosis. Lizerius jorgei sp. nov. is very similar to L. brasiliensis and L. costai . The apterous form of L. jorgei is distinguished from L. brasiliensis by bearing finger-like processes in the spinal body region and being devoid of spinal setae in each abdominal tergite; the alate form is distinguished by the absence of mammiform processes in the head and pronotum, the absence of spinal setae in each abdominal tergite and the presence of processes only in VI, VII and VIII tergites. Alate females of L. jorgei are distinguished from alate females of L. costai by possessing mammiformprocesses in abdominal tergits VI, VII and VIII, bearing much lower number of secondary rhinaria present in each antennal segment.

DESCRIPTION

Apterous viviparous female. Alive aphid withvivid yellowcolor, small greenish stripes at thorax and at three first segments of abdomen and black triommatidium. Specimens cleared and mounted in slides present body completely membranous with the last rostral segment bearing small sclerotization.

Morphological characters. Characteristics based on the analysis of 24 apterous viviparous female ( Figs 1-5 ). Body entirely pale, measuring 1.25-2.05 mm in length ( Fig. 1 ). Eyes reduced to triommatidium. Antennae 5-segmented, with total length range of 0.400 - 0.875 mm; 0.3-0.6 times as long as body. III antennal segment 0.17-0.44 mm, IV 0.07-0.17 mm, base of Vantennal segment 0.07-0.16 mm; processus terminalis 0.03-0.04 mm and 0.18-0.57 times as long as base of V ( Fig. 4 ). Rostrum 4-segmented extending until mesocoxae, with one pair of primary setae and one pair of secondary setae; apical segment obtuse (0.09-0.11 mm), 0.81-1.4 times as long as II segment of hind tarsus ( Fig. 3 ). Fore femora normal, not enlarged, hind tibiae with many hairs, most localized, being the hairs longest near the tarsi with 0.012 -0.027 mm length; first tarsal segments with 3-5 ventral setae reaching 0.020 -0.037 mm; second segment hind tarsus reaching 0.07-0.11 mm long ( Fig. 5 ). Siphunculi ring-like in 5th abdominal tergite. Knob of cauda finger-like (0.17-0.24 mm), bearing a constriction at basal one-third and with eight caudal hairs ( Fig. 2 ). Anal plate bilobated with 3-4 long setae in the apical margin of each lobe, which are longer than others present in the middle region of the lobes. Four gonapophyses with 2-3 gonochaetaes. Body with 12 pairs of long finger-like processes distributed as following. Two pairs in the head; one anterior and short (0.10-0.22 mm) and the other posterior and long (0.27-0.42 mm). In the thoracic region there are one lateral pair in the pronotum (0.32-0.56 mm), one lateral pair in the mesonotum (0.31- 0.71 mm) and one spinal pair in the mesonotum (0.41- 0.73 mm). In the abdomen the following pairs of processes are observed: 1st tergite, lateral pair (0.24-0.46 mm), 2nd tergite, lateral pair (0.32-0.51 mm), 3rd tergite, lateral pair (0.32 0.52 mm), 4th tergite, spinal pair (0.38-0.70 mm), 5th tergite, absent, 6th tergite, lateral pair (0.27-0.50 mm), 7th tergite, lateral pair (0.24-0.35 mm) and 8th tergite, spinal pair (0.30-0.44 mm) ( Fig. 1 ).

Alate viviparous female. Alive aphids with vivid yellowcolor and dark brown thorax; compound eyes black and red triommatidium. Specimens cleared and mounted in slides present body completely membranous with the last rostral segment bearing small sclerotization.

Morphological characters. Characteristics based on the analysis of 20 alate viviparous female ( Figs 6-8 ). Body entirely pale, measuring 1.15-1.62 mm in length ( Fig. 6 ). Head with setae varying length between 0.0075 -0.010 mm. Epicranial suture absent. Antennae 6-segmented, with total length range of 0.750 -0.925 mm, 0.49-0.82 times as long as body; III antennal segment 0.29-0.39 mm, IV 0.12-0.15 mm, V 0.12-0.17 mm, base of VI antennal segment 0.10- 0.15 mm; processus terminalis 0.02-0.04 mm and 0.15-0.30 times as long as base of VI. Secondary rhinaria oval to elliptic; 18-29 secondary rhinaria in III antennal segment, evenly distributed over all thesegment and 0-6 at IV antennal segment ( Fig. 8 ). Rostrum 4-segmented, extending until procoxae; apical segment obtuse (0.08-0.10 mm), 0.72-1.00 times as long as II segment of hind tarsus. Fore wings with dark pigmented costal veins and pterostigma, cubital vein strongly delimitated, tip of the veins weakly developed. Hind wings with two oblique veins ( Fig. 6 ). Fore femora normal, not enlarged and hind tibiae with many hairs, the longest of them reaching 0.0015 -0.0027 mm length and located at the apical half of tibia, near the tarsi. First segment of hind tarsi with 2 dorsal setae and 4-6 long ventral setae. Second segment of hindtarsi reaching 0.09-0.11 mm ( Fig. 7 ). Caudal knob finger-like, 0.13-0.21 mm and with 8-9 caudal hairs. One pair of small lateral mammiform processes in the 6th tergite (0.01-0.027 mm), one pair in the 7th tergite (0.015 -0.028 mm) and one pair of small spinal mammiform processes in the 8th tergite (0.015-0.03 mm) are observed in the abdomen of alate specimens ( Fig. 6 ). Other features similar to apterous forms.

Alatemale specimen. Alive aphids with vivid yellow color, dark brown thorax; compound eyes black and red triommatidium. Specimens cleared and mounted in slides present body completely membranous with the thoracic region darker than in females, very dark legs and last rostral segment with small sclerotization.

Morphological characters. Characteristics based on the analysis of one alate male form ( Figs 9, 10 ). Body pale with dark thoracic region and very dark legs. It differs from alate females by having high number of secondary rhinaria and several rhinaria in V and VI antennal segments, which are similar in size and shape of rhinaria present at segment III; and by possessing Vantennal segment slightly larger than females ( Fig. 10 ). Body slightly smaller than females ( Fig. 9 ). Other features similar to alate viviparous females.

Figures

Figs 1-5. Lizerius jorgei sp. nov., apterous viviparous female:1, body (100x magnification); 2, cauda (400x magnification); 3, rostrum (400x magnification); 4, antenna (400x magnification); 5, hind tarsus (400x magnification).

Figs 6-8. Lizerius jorgei sp. nov., alate viviparous female: 6, body and wings (100x magnification); 7, hind tarsus (400x magnification); 8, antennae (400x magnification).

Figs 9, 10. Lizerius jorgei sp. nov., alate male: 9, body and wings (100x magnification); 10, antennae (400x magnification).