Glomeremus paraorchidophilus, Hugel & Micheneau & Fournel & Warren & Gauvin-Bialecki & Pailler & Chase & Strasberg, 2010

Hugel, S., Micheneau, C., Fournel, J., Warren, B. H., Gauvin-Bialecki, A., Pailler, T., Chase, M. W. & Strasberg, D., 2010, Glomeremus species from the Mascarene islands (Orthoptera, Gryllacrididae) with the description of the pollinator of an endemic orchid from the island of Réunion, Zootaxa 2545 (1), pp. 58-68 : 62-64

Glomeremus paraorchidophilus n. sp.

( Figs. 5, 8, 11, 14, 17, 20 , tab. 2)

Holotype. Male. Indian Ocean, Mascarene archipelago, Maurice, Savanne District, Parc National de Rivière Noire, Cocotte , 745 m Alt. , 20°26’29’’S 57°28’20’’E, 22.IV.2005, S. Hugel, MNHN ( MNHN-ENSIF2644 ).

Allotype. Female. Same as holotype, 22.IV.2005, S. Hugel, MNHN ( MNHN-ENSIF2645 ).

Paratypes. Males. 2♂, same as holotype, 22.II.2008, BIOTAS2008212, S. Hugel, MHNR; 22.IV.2005, S. Hugel leg & coll. 1♂, Maurice , Savanne District, Parc National de Rivière Noire, Plaine Champagne , point de vue sur les Gorges, 681 m alt., 20°25’39’’S 57°25’43’’E, 22.IV.2005. S. Hugel, MSIRI. 1♂, Maurice , Plaines Wilhems District, Petrin , 604 m alt., 20°24’27’’S 57°28’21’’E, 23.II.2008, BIOTAS2008122, S. Hugel leg & coll. 1♂, Maurice , Port Louis District, le Pouce (dernier plateau), 733 m alt., 20°12’13’’S 57°31’43’’E, 08.V.2009, BIOTAS2009217, S. Hugel leg & coll. 2♂, Maurice , Plaines Wilhems District, Brise Fer vieille parcelle, 648 m alt., 20°23’02’’S 57°26’23’’E, 24.II.2008, BIOTAS2008176, S. Hugel, CIRAD Réunion ; BIOTAS2008177, S. Hugel, CIRAD Réunion . 1♂, Maurice , Black River District, Parc National de Rivière Noire, Piton Brise Fer , 617 m alt., 20°23’02’’S 57°25’51’’E, 13.V.2009, BIOTAS2009349, S. Hugel leg & coll. Females. 1♀, same as holotype, 07.V.2009, BIOTAS2009164, S. Hugel leg & coll. 1♀, Maurice , Savanne District, Parc National de Rivière Noire, Cocotte , 745 m Alt., 20°26’29’’S 57°28’20’’E, 22.IV.2005, S. Hugel leg & coll. 3♀, Maurice , Plaines Wilhems District, Florin , 610 m alt., 20°23’28’’S 57°27’37’’E, 25.II.2008, BIOTAS2008191, S. Hugel leg & coll; BIOTAS2008190, S. Hugel leg & coll; BIOTAS2008192, S. Hugel, MSIRI. 4♀, Maurice , Plaines Wilhems District, Petrin , 604 m alt., 20°24’27’’S 57°28’21’’E, 23.II.2008, BIOTAS2008130, S. Hugel, BMNH; BIOTAS2008131, S. Hugel, BMNH; BIOTAS2008123, S. Hugel leg & coll. BIOTAS2008124, S. Hugel leg & coll. 1♀, Maurice , Port Louis District, le Pouce (dernier plateau), 733 m alt., 20°12’13’’S 57°31’43’’E, 08.V.2009, BIOTAS2009206, S. Hugel leg & coll. 2♀, Maurice , Plaines Wilhems District, Brise Fer vieille parcelle, 648 m alt., 20°23’02’’S 57°26’23’’E, 04.V.2009, BIOTAS2009188, S. Hugel leg & coll; 24.II.2008, BIOTAS2008178, S. Hugel, CIRAD Réunion .

Diagnosis. See the diagnosis of G. orchidophilus n. sp..

Description. In addition to generic characters. Body length: size small for the genus. Head: slightly broader than the thorax; fastigium frontis wider than scapus; median and lateral ocelli weakly distinct.

Thorax. Pronotum: maximal width (including lateral lobes) slightly wider than long; anterior margin weakly convex (in dorsal view), arched; posterior margin strait (in dorsal view), almost horizontal; sulci not distinct on the discus, converging on lateral lobes. Wings. FW well distinct, half as long as Pro. Legs. TI and TII with usual spurs formula (4 pairs of subapical + 1 pair of apical spurs ventrally, and one single apical spur on TII posterior dorsal angle); subapical spurs of usual length (roughly at least as long as T width). Hind legs: femora 2.5–3.0 times as long as wide ( Fig. 5 ); FIII with 2–8 (usually 6) ventral anterior spines; FIII with 3–7 ventral posterior spines; TIII with 6–8 dorsal anterior spines; with 6–7 dorsal posterior spines. Abdomen. Stridulatory files present.

Sexual dimorphism: apart from primary sexual characters, ♂♂ and ♀♀ are similar, males are smaller.

Male: terminalia ( Fig. 8, 11, 14 ). Tergite VIII slightly extended posteriorly (compared to preceding tergites); posterior margin forming a 45° angle (in side view). Tergite IX vertically oriented (side view); distal end of tergite pointing ventrally (side view) with a distinct emargination separating two lobes (ventral/ posterior view; Fig. 14 ). Tergite X sclerites (see Hugel, 2009) forming an upwards/sideward-directed lamellar process ( Fig. 11, 14 ). Cerci shortened ( Fig. 14 ). SGP distal end with a distinct process between the styli; lateral margins of the process weakly converging; process with a distinct posterior notch ( Fig. 8 ); styli hardly exceeding the SGP distal process; styli not thickened ( Fig. 8 ). Female: sternite before SGP (VII) not modified; SGP ( Figs. 17, 20 ) with rounded lateral margins; with anterior bulge (side view, Fig. 17 ) posterior margin with a shallow emargination ( Fig. 20 ); with two distal lateral sclerifications. Ovipositor regularly arched, regularly narrowing towards the apex; pointing distally, 0.7 – 0.8 times as long as FIII, dorsal valves with a distinct ventrally directed protrusion near the basis. Colour: general coloration brown yellowish; occiput with a black pattern forming a triangle pointing on the fastigium frontis (as in G. orchidophilus n. sp.; Fig. 2 ); pronotum with a black pattern on the anterior margin, forming a triangle pointing backwards, sometimes with a black sagittal line and black on the posterior margin; legs without black pattern; knees sometimes darkened; anterior part of abdominal tergites darkened.

Figures

FIGURES 2–21. Glomeremus of the Mascarene islands. 2, 4, 7, 10, 13, 16, 19, Glomeremus orchidophilus n. sp. 5, 8, 11, 14, 17, 20, Glomeremus paraorchidophilus n. sp. 3, 6, 9, 12, 15, 18, 21, Glomeremus tikasignatus n. sp. 2, 3, head in frontal view. 4–6, left hind femora in side view. 7–9, male subgenital plate in ventral view. 10–12, scan electron microscope picture of male tergite X right sclerite. 13–15, male terminalia (SGP removed) in ventral/posterior view. 16– 18, female terminalia in right side view. 19–21, female subgenital plate and basis of ovipositor in ventral view. Bars: 1 mm.