Mellomima guyanensis Desutter-Grandcolas, 2020

Desutter-Grandcolas, Laure & Faberon, Léo, 2020, Phalangopsidae crickets (Orthoptera, Grylloidea) from the Mitaraka biological survey, French Guiana, Zoosystema 42 (32), pp. 739-797 : 766-768

Mellomima guyanensis Desutter-Grandcolas , n. sp.

( Figs 16-17 ; Table 11 )

urn:lsid:zoobank.org:act:C0814161-69A9-49CB-B218-D5A764E9EA3B

TYPE LOCALITY. — French Guiana, Monts Tumuc-Humac, Massif du Mitaraka.

TYPE MATERIAL. — Holotype by present designation. French Guiana • 1♂; Monts Tumuc-Humac , Massif du Mitaraka vers sommet en Cloche; entre 54.4541 O 2.2349 N et 54.4646 O 2.2329 N; alt. entre 370 m et 470 m; 23.II.-10.III.2015; F. Legendre & S. Hugel leg.; fn. SH546, de nuit; molecular sample LDG557; MNHN-EO-ENSIF9754 .

OTHER MATERIAL EXAMINED. — French Guiana • 1 juvenile; Monts Tumuc-Humac, Massif du Mitaraka, Layon A; entre 54.4509 O 2.2357 N et 54.4547 O 2.2405 N; alt. entre 280 m et 365 m; 23.II.-10.III.2015; F. Legendre & S. Hugel leg.; fn. SH130, de nuit; molecular sample LDG551; MNHN .

ETYMOLOGY. — Species named after its origin in French Guiana.

DIAGNOSIS. — As for the genus.

HABITAT. — The juvenile specimen has been collected by beating the leaf litter during the day, and the male has been found at night, in the leaf litter, in a windfall with dead branches. Mellomima guyanensis , n. gen., n. sp. could be a nocturnal straminicolous species.

DESCRIPTION

In addition to the morphological characters of the genus.

General morphology

TIII serrulation lacking between subapical spurs and apical spurs on both sides; on inner side, two spines between isa1 and isa2, three to four spines between isa2 and isa3, five spines between isa3 and isa4, 20-23 spines above isa4; on outer side, three to four spines between osa1 and osa2, five spines between osa2 and osa3, six spines between osa3 and osa4, 16-19 spines above osa4. Barsitarsomeres III serrulation: five inner spines and eight outer spines, in addition to apical spines.

Coloration

Head and pronotum reddish brown, except for yellow longitudinal band ( Fig. 16A, B, D ). Maxillary palpi light brown with white lower and upper margins. Antennae yellow at base, light brown with white rings on flagellum length; scapes brown with yellowish ventral side ( Fig. 16D ). Abdomen black brown, lighter dorsally without distinct yellow band or spot, except on tergite I. Sternites light brown. Cerci white basally, very light brown otherwise. FI, FII uniformly yellowish brown. TI, TII light reddish brown. FIII reddish brown, lighter at base; few unclear yellow spots on dorsal side (but see juvenile coloration).TIII yellowish brown, darker at base, with a dark ring and an irregular yellow ring near the knee; a small black brown spot at and near the base of each subapical spur; subapical spurs otherwise yellow with black apex; apical spurs yellowish with black apex. Tarsi yellowish to light yellowish brown.

Male

FWs not reaching tergite I distal margin ( Fig. 16A ). FWs as on Figure 16B, C ; dorsal field venation with one faint, longitudinal vein. Supra anal plate as on Figure 16G .

Male genitalia

As on Figure 17 .

Female

Unknown.

Juveniles

Longitudinal yellow band running from labrum to supra anal plate. FIII light yellow on dorsal base; outer side striated with yellow; upper side with many yellow rounded spots. Metanotum and tergite I uniformly brown; tergites 2 – 6 lighter with dark spots and yellow lines near anterior margin.

Measurements (in mm)

See Table 11 .

Figures

FIG. 16. — Mellomima guyanensis Desutter-Grandcolas,n.gen.,n. sp.:male holotype MNHN-EO-ENSIF9754: A, habitus;B, C, head,pronotum and FWs,dorsal (B) and side (C) views; D, face; E, F, inner (E) and outer (F) apical spurs of hind tibia; G, supra anal plate, with two distal bunches of setae (arrow). Scale bars: 1 mm.

FIG. 17. — Mellomima guyanensis Desutter-Grandcolas,n. gen., n. sp.: male holotype MNHN-EO-ENSIF9754, male genitalia in dorsal (A), ventral (B), side (C) and apical (D) views. Abbreviations: see Material and methods.