Herrera chelappendicula, SANBORN, 2020

SANBORN, ALLEN F., 2020, Two new species of Neotropical cicadas (Hemiptera: Cicadidae: Cicadettinae) from southeastern Brazi, Journal of Insect Biodiversity 19 (1), pp. 14-23 : 18-21

Herrera chelappendicula sp. nov. ( Fig. 2 )

urn:lsid:zoobank.org:act:1D0367E2-1471-4F3C-9758-7CAC960BDBDB

Type material: Holotype. “ Rod. Teresópolis- / Friburgo , Km 15 / Venda Nova / Teresópolis-RJ / 23–III–1991 / L.B.N. Coelho col.” male ( DZRJ). Paratypes. “ Macaé de Cima / Nova Friburgo-RJ / 2/II/1992 / D. Mejdalani col.” one female ( DZRJ); “ ITU , Sao Paulo, / BRAZIL I–11–63 / D. Tiemann, coll. // LACM ENT 403457 ” one male ( LACM); “ Brazil – Luiz Antonio – SP / E. Ecol. Jataí/Mata Ciliar / 12–XII–2007 / Lara & Perioto col. // 26” one female ( AFSC); “ Brazil – Luiz Antonio – SP / E. Ecol. Jataí/Mata Ciliar / 05–XII–2007 / Lara & Perioto col. // 26” one male ( AFSC); “ Brazil – Jaboticabal – SP / 03 – X – 2005 / Maccagnan, D.H.B. col. // 9” one male ( AFSC).

Etymology. The name is a combination of chela – (L. chela, claw) and – appendicula (L., appendicula, diminutive appendage) in reference to the claw-like terminus of the basal pygofer lobe appendage in this species.

Remarks. The unique genitalia quickly distinguish this new species from congeneric species of Brazil. The generic characters distinguish it from similar species of Carineta . This species represents a further expansion of the known range for the genus into southeastern Brazil.

Description

Ground color ochraceous, abdominal segments marked with castaneous, posterior abdomen darker. Green may predominate in fresh specimens as there is some green on the posterior abdominal tergites and specimens of the genus that I collected that were green when alive have faded to a similar ochraceous coloration.

Head. Head slightly wider than mesonotum, ground color, unmarked, one paratype with fuscous mark on medial margin of lateral ocelli and lateral and medial margins of median ocellus. Ocelli rosaceous, faded to ochraceous in one paratype. Eyes dark castaneous. Dorsal head with short silvery pile in some paratypes, longer silvery pile posterior to eye. Ventral head ground color. Postclypeus centrally sulcate from anterior to posteroventral margin to around apex, with ten transverse ridges, short silvery pile on lateral margin. Anteclypeus ground color. Ventral head and anteclypeus covered with short silvery pile, longer pile posteroventral to eye and radiating from lorum. Mentum ground color, labium ground color with castaneous lateral fascia becoming piceous distally, terminating with castaneous tip, reaching to distal hind coxae or anterior hind trochanter. Scape, proximal and distal pedicel and proximal first flagellar segment ground color, remaining antennal segments castaneous.

Thorax. Dorsal thorax ground color, unmarked. Silvery pile on posterior mesothorax, on lateral cruciform elevation, radiating from posterior wing groove, and on posterior metanotum margin. Ventral thoracic segments ground color, covered with short silvery pile.

Wings. Fore wings and hind wings hyaline, with eight and six apical cells respectively. Venation ground color at base, except piceous proximal and distal anal vein 2 + 3, becoming castaneous in apical cells, pterostigma present. Basal membrane grayish, light infuscation on wing margin along apical cells. Hind wing venation ground color at base becoming castaneous in apical cells, fuscous spot on base of anal vein 2 extending across base of anal vein 3 to base of anal cell 3. Anal cell 3 gray except for distal posterior margin, anal cell 2 along anal vein 3 and anal vein 2, anal cell 1 along anal vein 2 margined with gray.

Legs. Ground color except castaneous distal tarsi, and distal pretarsal claws, short silvery pile on coxae, long silvery pile radiating from legs. Fore femora with proximal spine longest angle intermediate between secondary and tertiary spines, secondary spine almost upright and of intermediate length, tertiary spine angled greater than secondary spine, secondary and tertiary spines with curving tip, spines ground color with castaneous tips. Tibial spurs and tibial combs ground color with castaneous tips. Meracanthus ground color, broadly triangular, reaching anteromedial opercular margin in male and middle of sternite II in female.

Opercula. Male operculum large for the genus, ochraceous covered with short silvery pile and radiating longer pile, small, rectangular lateral extension near lateral base, anterolateral margin straight, angled posteromedially to rounded posterior margin forming a roughly semicircular posterior, rounded medial margin, opercula not meeting medially, with concave anteromedial margin to base, covering all but anteromedial tympanum, reaching to anterior margin of sternite II. Female operculum reduced compared to male, lateral margin straight, angled posteromedially, posterolateral corner curved to slightly sinuate posterior margin that reaches only to middle of meracanthus forming a small extension medially, operculum reaching to anterior of sternite II.

Abdomen. Abdominal tergites castaneous anteriorly with ground color posterior margins, castaneous becoming darker in posterior tergites, tergites covered with silvery pile, long silvery pile radiating from lateral tergites 4–8. Timbal completely exposed, timbal with ten long ribs and nine intercalary ribs. Male sternites I and II ground color, remaining sternites castaneous, auditory capsule ground color with castaneous posterolateral region, sternite VIII with transverse posterior margin, epipleurites castaneous with ground color posterior margins, sternites and epipleurites covered with short silvery pile and radiating long silvery pile. Female tergites and sternites similarly colored to male, long silvery pile radiating from lateral tergites 2–8. Female sternite VII with deep medial notch, open U-shaped anteriorly margins angling laterally for posterior half, posterior notch extending to triangular extension beyond arching posterolateral margin. Female abdominal segment 9 castaneous with ground color ventral and posterior margins, covered with short silvery and radiating long golden pile. Dorsal beak castaneous, longer than castaneous anal styles. Posterior margin of abdominal segment 9 curved.

Genitalia. Male pygofer castaneous with ground color anterolateral surfaces, covered with short silvery pile. Dorsal beak narrow, angled dorsally. Pygofer upper lobe small, knob-like, angled mediad at base. Pygofer basal lobe extended, adpressed to pygofer, curving mediad, dense, long golden pile radiating from distal region. Uncus absent, claspers small meeting posterior to anal styles and recurving laterally forming a small V-shaped notch. Basal lobe appendage flattened, broad at base with thin extension from posterodistal corner that expands into a claw-like terminus with two large extensions, lateral extension curved. Aedeagus castaneous, tubular with a flap-like terminal extensions.

Female gonocoxite IX darkened ground color. Gonapophysis IX castaneous, gonapophysis X dark castaneous. Ovipositor sheath extends beyond dorsal beak. Long golden pile radiating from ovipositor sheath.

Measurements (mm). N = four males or two females, mean (range). Length of body: males 15.45 (14.45–16.25), females 16.68 (16.35–17.00); length of fore wing: males 20.14 (19.70–20.50), females 21.18 (20.80–21.55); width of fore wing: males 7.24 (6.65–7.90), females 7.65 (7.65–7.65); length of head: males 2.56 (2.45–2.65), females 2.73 (2.70–2.75); width of head including eyes: males 5.48 (5.25–5.60), females 5.98 (5.95–6.00); width of pronotum including suprahumeral plates: males 5.74 (5.40–5.90), females 6.60 (6.30–6.90); width of mesonotum: males 5.03 (4.75–5.40), females 5.38 (5.25–5.50).

Diagnosis. Herrera chelappendicula sp. nov. can be distinguished from the majority of Herrera species by the relatively large opercula that cover the tympanal cavity completely and from all species by the shape of the basal pygofer lobe appendage. Only H. melanomesocranon Sanborn, 2019a, H. phyllodes Sanborn, 2019a, H. quadroacuminata Sanborn, 2020a, H. cephalodigramma Sanborn, 2020b, and H. polygramma Sanborn, 2020b possess opercula that cover most or all of the tympanal cavity. The piceous dorsal head and the thin, tapering basal pygofer lobe appendage quickly distinguish H. melanomesocranon from this new species. Similarly, the piceous markings on the head, pronotum and mesonotum distinguish H. cephalodigramma and H. polygramma from this new species. The most similar species are H. phyllodes and H. quadroacuminata. The new species can be distinguished from H. phyllodes by the angled junction of the anterior supra-antennal plate with the postclypeus, the primary femoral spine being most oblique, the 11 timbal ribs, the smoothly curved notch in female sternite VIII, and the basal lobe appendage that has three points on the two extensions to the terminus and from H. quadroacuminata by the supra-antennal plate extending beyond the dorsolateral postclypeus, the markings on the frons and lateral to the lateral ocelli, the markings in the anterior medial and lateral sigillae, and the basal lobe appendage that expands into a leaf-like terminus with two large and two short extensions.

Distribution. The new species is known only from the type series collected in the states of Rio de Janiero and São Paulo in southeastern Brazil.

Figures

Figure 2. Herrera chelappendicula sp. nov.: A, holotype male (top) and paratype female (bottom) habitus; B, holotype male dorsum; C, holotype male timbal; D, holotype male operculum; E, paratype female operculum; F, paratype male lateral view of genitalia; G, paratype male posterior view of genitalia; H, paratype female lateral view of genitalia; I, paratype female ventral view of genitalia. Scale bar: A, 2 cm; B, 5 mm; C – E, 2 mm; F – I, 1 mm.