Storozhenkoa sergeyi Gorochov, 2025

Gorochov, Andrei V., 2025, A new genus of the subfamily Nemobiinae (Orthoptera: Gryllidae) with unclear tribal position for a new species from Madagascar, Zootaxa 5715 (1), pp. 151-155 : 153-155

Storozhenkoa sergeyi Gorochov , sp. nov.

( Figs 1–13 )

Type material. Holotype —male: Madagascar, Toamasina Prov., Moramanga Distr., Analamazaotra Forest Station near Andasibe Vill ., 18°56´S, 48°25´E, about 900 m above sea level, primary/secondary forest, on bark of living tree at night, 1–7.III.2013, A. Gorochov, L. Anisyutkin ( ZIN) . Paratypes: 2 males, 4 females, same data as for holotype ( ZIN) ; 3 males, 2 females, same province and district, about 10 km NW of Andasibe Vill, Torotorofotsy Reserve , about 1000 m above sea level, primary forest, under same conditions as holotype, 22.II–11.III.2013, A. Gorochov ( ZIN) .

Description. Male ( holotype). Body coloration following: head and pronotum dark brown with large yellowish ornament on head dorsum between eyes and on pronotal disc ( Fig. 2 ), smaller yellowish ornament on anterior part of epicranium ( Fig. 4 ), greyish eyes, yellowish genae and mouthparts (but labrum and parts of mandibles greyish, maxillary palpus with four light brown transverse bands, and labial one with one such band on apical segment), yellowish to greyish proximal parts of antennae (these parts with poorly distinct brownish marks), light brown to brown more distal antennal parts, and small yellowish marks on pronotal lateral lobes ( Fig. 1 ); legs distinctly spotted ( Figs 1, 2 ); tegmina brown to dark brown, with yellowish to whitish distal area of each dorsal field and short humeral marks as well as small marks near plectrum and on chords ( Figs 1, 2 , 5 ); abdominal tergites, anal plate and paraprocts almost dark brown with small and sparse lightish marks; sternites from almost yellowish to light greyish brown; cerci and genital plate barely darker than sternites ( Figs 1, 2 , 6, 7 ). Shape of head, of pronotum and of legs as in Figs 1, 2 , 4 ; tegmina reaching middle of fourth abdominal tergite, with four branches of Sc in lateral field ( Figs 1, 2 ), without visible venation in light apical part of dorsal field, and with other venation of this field as in Fig. 5 (left tegmen with dorsal field partly semitransparent and covered by dorsal field of right tegmen in rest position); hind tibia with four inner and four outer dorsal spines as well as with middle outer apical spur approximately as long as dorsal spines but somewhat longer than dorsal and ventral outer apical spurs; abdominal apex and genitalia as in Figs 6–10 .

Variations. Some males with light marks hardly darker or almost without light marks in proximal half of dorsal tegminal field; one male paratype with light apical part of dorsal tegminal field almost brown but having whitish borders, and with abdominal tergites having wide whitish longitudinal median band on dorsum; crossvein between diagonal and oblique veins in middle part of tegminal dorsal field often undeveloped; number of Sc branches in lateral tegminal field varied from four to five.

Female. Coloration and structure of body similar to those of males, but tegmina lateral (scale-like) and barely visible near posterior edge of pronotum (their venation indistinct; Fig. 11 ); tergites of pterothorax and of abdomen more spotted ( Fig. 3 ), last abdominal sternite and genital plate as in Fig. 12 ; ovipositor almost 1.5 times as short as hind femur, with distal part as in Fig. 13 .

Length in mm. Body: male 7–7.5, female 6.5–7; pronotum: male 1.4–1.6, female 1.6–1.8; tegmina: male 2.3– 2.5, female 0.1–0.3; hind femora: male 5–5.4, female 5.3–5.6; ovipositor 4.9–5.2.

Comparison. This species is alone in the genus, and its differences from all other known taxa of Nemobiinae are given in the diagnosis for its genus.

Etymology. The new species is named after the first name of the same birthday hero (Sergey Yu. Storozhenko).

Figures

FIGURES 1–3. Storozhenkoa sergeyi gen. et sp. nov., body of male holotype (1, 2) and of female paratype (3); 1–from side; 2, 3–from above.

FIGURES 4–13. Storozhenkoa sergeyi gen. et sp. nov., details of structure in male holotype (4–10) and in female paratype (11– 13); 4–head in front; 5–dorsal field of right (upper) tegmen from above; 6–abdominal apex from above/behind; 7, 12–abdominal apex from below; 8–10–genitalia from above (8), from below (9) and from side (10); 11–mesonotum and metanotum with scalelike lateral tegmina from above; 13–distal part of ovipositor from side.