Limentinus nigrifacies, Gnezdilov, 2021

Gnezdilov, Vladimir M., 2021, New species of the genera Limentinus Distant, 1917 and Calodia Nielson, 1982 (Hemiptera, Auchenorrhyncha, Cicadellidae, Coelidiinae) from the Makay Massif of Madagascar, with a key to Malagasy species, Zoosystema 43 (16), pp. 297-310 : 301-303

Limentinus nigrifacies n. sp.

( Figs 3 C-F; 8 )

urn:lsid:zoobank.org:act:C0339619-CA8C-452D-A09D-0832C636880E

TYPE MATERIAL. — Holotype. Madagascar • ♂; Toliara Province, Massif du Makay ; 21°37.783’S, 45°00.286’E; 170 m; 23.I.2011; sweeping in dry forest; V. M. Gnezdilov leg.; ZIN.

Paratype. Madagascar • ♂; Toliara Province, Massif du Makay, forêt d’Ambalamanga Sud ; 21°40.493’S, 44°59.603’E; 157 m; 20.I.2011; sweeping in dry forest; V. M. Gnezdilov leg.; MNHN .

ETYMOLOGY. — The species name refers to the coloration of the face.

DIAGNOSIS. — Aedeagal shaft with one short subapical process on left side, two long spine-shaped processes below it, and two long spine-shaped processes on opposite right side ( Fig. 8D, E ).

TAXONOMIC RELATIONSHIPS. — In general the male genitalia structure is close to L. aldabranus Distant sensu Nielson (1982) , but is well differentiated by its black face and details of the aedeagus.

DESCRIPTION

Structure

General structure as mentioned for the genus. Crown wider than in other species described, as long as wide basally.Second metatarsomere with two spines laterally and two platella between them ventroapically.

Coloration (holotype) ( Fig. 3C, D )

Head and body from below black. Legs black, with burgundy tint. Crown with brown yellowish median line. Pronotum with brown yellowish areas. Mesonotum black. Scutellum brown yellowish. Forewings cinereous to black, with black to dark brown veins. Hindwings cinereous, with brown to dark brown veins. First metatarsomere brown yellowish in its basal half and black in its apical half. Abdominal segments including genital block black, with light yellow hind margins.

Coloration (paratype) ( Fig. 3E, F )

Face black; anteclypeus with wide brown yellowish median line; lorae with brown yellowish margins; genae yellow along frontoclypeus and under antennae; rostrum with black 1 st visible segment and brown yellowish 2nd one. Crown brown yellowish, with black longitudinal areas. Pronotum brown yellowish, except black paranotal lobes. Mesonotum brown yellowish. Forewings brown yellowish, with dark brown veins. Episternae and epimerae with yellow margins. Katepisternae yellow, with dark brown to black central part. Fore and middle coxae dark brown. Hind coxae black. Fore and middle femora and tibiae dark brown, with red tint. Hind femora and tarsomeres brown yellowish.

Male genitalia ( Fig. 8 )

Anal tube 1.4 times as long as wide, flattened ventrally ( Fig. 8B ). Anal column short. Pygofer covered by long setae; pygofer lobe triangularly elongate, with an additional small lobe on apical angle under anal tube and with ventral lobe in its basal half ( Fig. 8A, C ); apical pygofer lobe apically with macrosetae on its inner side ( Fig. 8C ). Subgenital plate long and narrow, with long setae on the main surface. Aedeagus asymmetrical; shaft long and narrow, weakly curved, with large hook apically bearing five small lateral denticles on each side (in ventral and lateral views) ( Fig. 8 D-G), with one short subapical process on left side, two long spine-shaped slightly curved processes below it, and two long spine-shaped slightly curved processes in opposite on right side, gonopore situated below long processes of shaft, small ( Fig. 8D ). Styles small, rounded ( Fig. 8D, E ). Connective arcuate.

Measurement

Total length. 6.0 mm.

Figures

FIG. 3. — Limentinus spp.: A, L. nielsoni n. sp., holotype, ZIN, dorsal view; B, same, frontal view; C, L. nigrifacies n. sp., holotype, ZIN, dorsal view; D, same, frontal view; E, L. nigrifacies n. sp., paratype, ZIN, dorsal view; F, same, frontal view. Total length of the specimens: 6.0 mm.

FIG. 8. — Limentinus nigrifacies n. sp., holotype, ZIN, male genitalia: A, genital block (without aedeagus), lateral view; B, apices of pygofer lobes and anal tube, dorsal view; C, pygofer, ventral view; D, aedeagus, connective, and styles, ventral view; E, aedeagus, connective, and style, lateral view; F, apex of aedeagus, lateral view; G, apex of aedeagus, dorsal view. Not to scale.