Eulioptera mutembai, Naskrecki & Guta, 2019

Naskrecki, Piotr & Guta, Ricardo, 2019, Katydids (Orthoptera: Tettigoniidae) of Gorongosa National Park and Central Mozambique, Zootaxa 4682 (1), pp. 1-119 : 64

Eulioptera mutembai sp. n.

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:506818

( Figs. 28 A–G)

urn:lsid:zoobank.org:act:1F5DDCF0-306C-4BA1-B337-CFCD56ED0CB2

Type locality. Mozambique: Sofala, Gorongosa , GNP, Chitengo, E.O. Wilson Laboratory, elev. 48 m (-18.977722, 34.351333), 15–30.ix.2017, coll. P. Naskrecki—male (holotype) ( EOWL) .

Differential diagnosis. E. mutembai sp. n. is similar in its appearance to E. reticulata Ragge, 1956 but differs in the shape of the cercus ( Figs. 28D, F ), which is flatter and wider apically, the depth of the incision on the posterior margin of the subgenital plate ( Fig. 28E ), the shape of the mirror (oval in E. reticulata , triangular in E. mutembai ) ( Figs. 28A, B ), and the characteristics of the stridulatory file ( Fig. 28C ).

General. Body small, slender, macropterous; legs elongate ( Fig. 28G ).

Head. Frons vertical, slightly convex, smooth; antennae about twice as long as body; antennal scapus unarmed. Fastigium of frons touching fastigium of vertex; fastigium of vertex triangular, blunt apically, as wide as 1/2 of antennal scapus, barely reaching base of scapus, grooved dorsally; eyes globular, moderately protruding; lateral ocelli circular; median ocellus oval.

Thorax. Lateral lobe about as high as long; humeral sinus of pronotum present, anterior margin of pronotum flat, straight; metazona flat, posterior edge of metazona straight; lateral carinae of pronotum absent. Thoracic auditory spiracle large, narrowly oval, its upper half hidden under pronotum; mesosternum unarmed.

Legs. Legs slender. Front coxa unarmed, front femur unarmed ventrally; genicular lobes of front femur unarmed; front tibia unarmed dorsally, with 1 spine on posterior and 2 on anterior ventral margin; apex of front tibia with 1 pair of dorsal and 1 pair of ventral spurs; tympanum bilaterally open, oval, about twice as long as wide; genicular lobes of mid femur unarmed; apex of mid tibia unarmed dorsally and 1 pair of minute ventral spurs, hind femur armed on both ventral margins with 1–2 small spines below knee; genicular lobes of hind femur armed on inner side with minute spine; dorsal spines of hind tibia with alternating size; apex of hind tibia unarmed dorsally and 1 pair of minute ventral spurs.

Wings. Tegmen distinctly surpassing apex of abdomen; hind wing longer than tegmen, exceeding them by about 1/3 of tegmen length; tegmen with cells between major and minor veins translucent in costal, radial, and median fields, opaque in cubital field; right stridulatory area with large, fully developed, distinctly triangular mirror ( Fig. 28B ); stridulatory file evenly curved, 1.4 mm long, 0.05 mm wide, with 192 teeth ( Fig. 28C ).

Abdomen. 10th tergite unmodified; epiproct approximately square, unmodified. Cercus evenly bent inwards, its apex slightly flattened dorso-ventrally, blunt, sclerotized ( Fig. 28D ); cercus straight when seen from side ( Fig. 27F ). Phallus entirely membranous, without sclerotized elements. Subgenital plate narrowly trapezoidal, with small, triangular apical incision; styli absent ( Fig. 28E ).

Coloration. Coloration light green, with dense punctation of small, black dots over most of body except for tegmina; face pale green, lighter than rest of body; tegmen with small, brown patch on stridulatory area.

Distribution and natural history. This species has so far been only found in the woodland habitat of Chitengo Camp of Gorongosa National Park. Its call is yet unknown.

Etymology. This species is named in honor of Mr. Mateus Mutemba, Director General of the National Administration of Conservation Areas of Mozambique and former warden of Gorongosa National Park for his many contributions to biodiversity conservation.

Measurements (1 male). body w/wings: 26.6; body w/o wings: 13.4; pronotum: 3.2; tegmen: 16.1; hind femur: 13.4 mm.

Material examined (1 specimen). the holotype is unique.

Figures

FIGURE 27. Eulioptera carrolli sp. n.: A. base of male left tegmen; B. base of male right tegmen; C. stridulatory file; D. male abdominal apex, dorsal view; E. male subgenital plate; F. female subgenital plate; G. ovipositor; H. male, dorsolateral view.

FIGURE 28. Eulioptera mutembai sp. n., male holotype:A. base of left tegmen; B. base of right tegmen; C. stridulatory file; D. abdominal apex, dorsal view; E. subgenital plate; F. abdominal apex, lateral view; G. habitus, lateral view.