Macedna martini Karsch 1891
Creators: name: Tan, Ming Kai
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Phaneropteridae
Macedna
Macedna martini

description: Macedna martini Karsch, 1891
(Fig. 6)
Macedna martini Karsch, 1891 — Karsch, 1891: 210 Elimaeini sp.— Tan, 2012: 59 (wrongly identified)
Material examined. 2 males and 2 females. Holotype (male), Indonesia, Sumatra, coll. L. Marin G (images from Orthoptera Species File). 1 male, 2 females, Singapore, Bukit Timah Nature Reserve: (1) male, Taban Valley, coll. D. H. Murphy, 7 April 1974; (2) female, coll. D. H. Murphy: (3) female, main road, coll. M. K. Tan & T. M. Leong, 23 October 2010 (all ZRC).
Discussion. The original species description is in Latin and very brief. At such the description needs to be completed and clarified using modern criteria of systematic. The females are also not described previously. Here, the male is redescribed and the female is described for the first time.
Description. Habitus in live specimen as shown in Fig. 6 A. Head small, with length circa 0.6 times of pronotum length (n = 4). Fastigium narrower than antennal scapus, fastigium verticis not forming a right angle with fastigium frontis; scapus setose, antennal segments with fine short hairs. Eye prominent; median ocellus large. Frons smooth. Pronotum smooth, with fine short hairs, circa 1.6 times longer than wide (n = 4); dorsal plate with anterior margin concave; posterior half with shallow medial furrow; with posterior margin broadly rounded, medially feebly notched; lateral keel not distinct; lateral lobe circa 1.1 times longer than tall (n = 3), ventral margin substraight and posterior margin broadly rounded. Prosternum with a large nodular process. Meso- and metasternum with roundly triangular lobes, margin carinulated. Tegmen and hind wing fully developed. Tegmen widens gently medially; and with apex enlarged. Tegminal venation as shown in Fig. 6 B: Radius sector (Rs) originates after middle, forked; veins and veinlets form polygonal cells, particularly prominent towards apex. Hind wing with apex distinctively projecting beyond tegmen. Legs generally with dense short setae. Anterior coxa without spine on upper part. Anterior tibia with external and internal tympana open and oval; with 10 inner and 7 outer spines (n =1).
Male. Mirror of left tegmen about as long as wide (n = 2). Stridulatory vein of left tegmen thickened, substraight and curved at the ends, circa 2.3 mm (n = 1); file with thicker teeth widely and evenly spaced at the anterior end, with small teeth densely and evenly spaced at the posterior end (Fig. 6 C). Abdominal apex as shown in Figs. 6 D, 6E. Tenth abdominal tergite wider than long; basal part with a medial triangular carina pointing posteriorly, triangular carina wider than long, apex of carina broadly obtuse; with apical margin broadly roundly excised. Epiproct broadly tongue-shaped; apex broadly rounded, feebly emarginated in the middle, setose (Fig. 6 D). Cercus large, elongated and gradually curved; basal half gently tapering, apical half hardly widens before conical apex; apical cone obtuse. Subgenital plate narrow and elongated; basal half gently curved ventrad, apical half strongly curved dorsad; basal margin widely emarginated, with small medial nodule near basal part; basal half tapering into shaft with fairly deep furrow; apical part weakly diverging, setose on outer margin, not between excision; with apex sharply emarginated; lateral apical lobes with an elongated spine-like process (Fig. 6 E). Genitalia with a pair of sclerites structures; sclerite denticulate along dorsal margin (Fig. 6 F).
Female. Abdominal apex as shown in Figs. 6 G– 6I. Tenth abdominal tergite truncated (Fig. 6 G). Epiproct broadly tongue-shaped, apex obtuse (Fig. 6 G). Cercus curved internally, conical, slender, gently tapering into a fairly acute apex (Fig. 6 G). Subgenital plate simple and small triangular, slightly longer than wide; apical margin rounded, furrowed (may be due to shrinking) (Fig. 6 H). Ovipositor short sabre-shaped; dorsal valve longer than ventral valve; ventral margin roundly curved dorsally, dorsal margin bent abruptly dorsally, thereafter denticulated; margins denticulated near apex; gonangulum of ovipositor simple, oval-shaped, margins broadly curved, without projection (Fig. 6 I).
Colouration. In general yellow green when alive, yellow when preserved. Head green dorsally; gena with dark band behind eyes. Scapus green with tint of pink and red; antennal segments dark with pink and red. Pronotum with dorsal plate green, anterior margin with some black spots, posterior margin pale yellow; lateral keel yellow with numerous irregularly sized black spots; lateral lobe yellow green, with irregularly sized black spots on the dorsal half, margin with faint black spot, more widely spaced out on the ventral margin than anterior and posterior margins. Tegmen yellow green; cells with small black spots, some cells with distinctively larger black spots; anterior and posterior margins dark. Hind wings hyalinous, with exposed apex green with small black spots. Abdomen yellow green, with some brown spots. Anterior and middle legs mostly yellow with spots, most prominent on the ventral surfaces. Posterior femur green basally, apically yellow; with brown spots. Posterior tibia brown with tint of green. Female cerci with apex black. Ovipositor with dorsal area yellow green basally, ventral area yellow brown; apically brown to dark brown.
Measurements (1 male, 2 females from ZRC). See Table 2.
Remarks. This species is more widely distributed than previously described from Sumatra. This represents the first record of this genus and species in Malay Peninsula.
The author is thankful of Piotr Naskrecki for permitting the use of images from Deutsche Orthopteren Sammlungen (DORSA). The collection of material in the Central Catchment Nature Reserve and Bukit Timah Nature Reserve was granted by the National Parks Board, Singapore (NP/ RP 10-073). Permission for the collection of material in Bukit Fraser was granted by the Research Promotion and Co-Ordination Committee, Economic Planning Unit, Prime Minister’s Department (UPE: 40/200/19/2923) and supported by the Institute for Biodiversity, Department of Wildlife and National Parks (Perhilitan).
description: Published as part of Tan, Ming Kai, 2014, Short taxonomic review of little-known Phaneropterinae (Orthoptera: Tettigoniidae) from Malay Peninsula, pp. 329-340 in Zootaxa 3826 (2) on pages 338-340, DOI: 10.11646/zootaxa.3826.2.3, http://zenodo.org/record/230669