Ingrischia macrocephala, Naskrecki, Piotr & Rentz, David C. F., 2010

Naskrecki, Piotr & Rentz, David C. F., 2010, Studies in the orthopteran fauna of Melanesia: New katydids of the tribe Agraeciini from Papua New Guinea (Orthoptera: Tettigoniidae: Conocephalinae), Zootaxa 2664, pp. 1-35 : 9

Ingrischia macrocephala sp. n.

( Figs. 3 A–H)

Type locality. PAPUA NEW GUINEA: East New Britain, Nakanai Mts., Vouvou (5°26'45.5''S, 151°27'48.7''E), 866 m, 10–18.iv.2009, coll. P. Naskrecki—male holotype ( ANSP)

General. General characteristics as described above.

Legs. Front tibia with 7–10 short spines on each ventral margin; mid tibia with 4–5 spines on posterior and 10–12 on anterior ventral margin; spines on posterior margin much smaller.

Wings. Stridulatory file flat, weakly sinuous, 2.3 mm long, 0.15 mm wide, with 128 teeth; all teeth of similar thickness, but with evenly decreasing length towards both ends of file ( Fig. 3 E).

Abdomen. Cercus short, slightly bent inwards; at base with blunt inner tooth, apex of cercus with two short, sharp teeth ( Figs. 3 F–G). Titillator with thick, flattened base, and evenly narrowed, think upper part; upper part of titillator joined with small lateral sclerite; surface of titillators smooth ( Fig. 3 H).

Coloration. Face orange with black, scattered markings in upper half ( Fig. 3 C); occiput with irregular dark markings; antennal scapus black, antennae light brown, concolorous. Pronotum light brown, with irregular dark markings. All femora strongly banded, central portion white, bordered by black, irregular patches; apical part of femora olive green. Tegminal veins light, membrane between veins dark brown, nearly black. Abdominal terga light brown dorsally, darker brown towards sides of abdomen; abdominal sterna light green, without darker markings; subgenital plate uniformly black in male, black with central white stripe in female; ovipositor uniformly brown.

Measurements (3 males, 3 females). body w/wings: male 34.5–38 (36.8±2), female 38–47 (42.3±4.5); body w/o wings: male, female 34–42 (38±4); pronotum: male 11–11.8 (11.3±.5), female 9–10 (9.7±.6); tegmen: male 16.2–18 (17.1±.9), female 17.2–21.5 (19±2.2); hind femur: male 16–17 (16.4±.6), female 15–19 (17±2); ovipositor: 11–12 (11.4±.5) mm.

Material examined (9 specimens). Papua New Guinea: East New Britain, Pomio, Nakanai Mts., Tompoi, elev. 1608 m (5°20'37.5''S, 151°18'52.7''E), 19–25.iv.2009, coll. P. Naskrecki— 2 females (paratypes), 3 nymphs ( ANSP, MCZ); Nakanai Mts., Vouvou, elev. 866 m (5°26'45.5''S, 151°27'48.7''E), 10– 18.iv.2009, coll. P. Naskrecki— 1 female, 2 males (incl. holotype, 2 paratypes) ( ANSP).

Etymology. The specific epithet refers to the disproportionately large head of the only known species of the new genus.

Figures

FIGURE 3. Ingrischia megacephala n. gen. & sp.: A. paratype female; B. female subgenital plate; C. face; D. male tegmen; E. stridulatory file; F. male cerci, dorsal view; G. male right cercus, ventral view; H. titillators.