Furcilarnaca salit, 2018

Ingrisch, Sigfrid, 2018, New taxa and records of Gryllacrididae (Orthoptera, Stenopelmatoidea) from South East Asia and New Guinea with a key to the genera, Zootaxa 4510 (1), pp. 1-278 : 185-187

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https://doi.org/ 10.11646/zootaxa.4510.1.1

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scientific name

Furcilarnaca salit

sp. nov.

Furcilarnaca salit View in CoL sp. nov.

Figs. 63 View FIGURE 63 A–D, 64A–D, 65H–J, 101B

Material examined. Holotype (male): Thailand: Tak, Ban Mae Salit, Monkrating resort, elev. 700–800 m (17°30'N, 98°5'E), 15–21.v.1988, leg. S. Ingrisch—(Bonn ZFMK). GoogleMaps

Other specimens studies: same data as holotype: 1 female (paratype)—(Bonn ZFMK).

Diagnosis. The structure of the male abdominal apex shows some similarity to that of F. fallax Li et al. (2015) . F. salit differs by the spines of the ninth abdominal tergite being larger than those of the tenth tergite not opposite and completely black not only tip black. The large projections of the male subgenital plate are stiffened, convex on dorsal side, flattened on ventral side, moderately curved inward and with an acute spine at tip instead of flattened, unarmed and curved outward ( Figs. 64 View FIGURE 64 A–D). The combined shapes of female seventh abdominal sternite plus subgenital plate are unique, but only for some species of the genus females have been described so far.

Description. Small to medium sized species. Head: Face narrow ovoid, nearly sub-triangular, forehead nearly smooth; fastigium verticis little wider than scapus, separated by a fine, weak suture from fastigium frontis; ocelli distinct, yellow; subocular furrow shallow ( Fig. 63C View FIGURE 63 ). Abdominal tergites two and three each with two rows of stridulatory pegs (8–11, 16–18; 15–20, 16–30; n = 1 male, 1 female; Fig. 63D View FIGURE 63 ).

Wings surpassing middle or even reaching tip of stretched hind tibia ( Figs. 63 View FIGURE 63 A–B). Tegmen: Radius gives rise to RS at about beginning of apical third, both veins forked near tip; media anterior free from base, single-branched, in female free but attached to R in basal area; male: cubitus anterior with a single branch at base, dividing into two veins at about end of basal third of tegmen, the anterior branch forks again into two veins and shortly thereafter into MP and CuA1—female: media and cubitus anterior with a common stem that runs attached to R in basal area, at about end of basal third it divides into an afterwards unbranched anterior vein (media anterior) and a posterior branch that almost immediately divides again into two veins (MP and CuA); cubitus posterior undivided, free throughout; with 4–5 anal veins.

Legs: Fore coxa with a spine at fore margin; fore and mid femora unarmed; fore and mid tibiae with 4 pairs of large ventral spines (first pair small, on mid tibiae even very small) and 1 pair of smaller ventral spurs; hind femur with 3–10 external and 5–10 internal spines on ventral margins; hind tibia with spaced spines on both dorsal margins, ventral margins with one pre-apical spine; with 3 apical spurs on both sides.

Coloration. General color uniformly yellowish brown ( Fig. 101B View FIGURE 101 ). Face uniformly yellowish brown; eyes black. Tegmen semi-transparent yellow; veins and veinlets yellow; hind wing semi-transparent white, main veins yellow, cross-veins light grey.

Male. Eighth abdominal tergite of normal shape. Ninth abdominal tergite vaulted, at apex short-narrowly excised in middle and on both sides with a black, curved, acute spine. Tenth abdominal tergite narrow band-shaped, interrupted in middle by epiproct; on both sides of central interruption and below the spines of ninth tergite with a curved acute spine sitting on a strongly swollen base ( Figs. 63 View FIGURE 63 A–B). Subgenital plate basal area short, styli inserted at lateral angles of basal area; between bases of styli subgenital plate prolonged into two long, little curved, acute lobes ( Figs. 63 View FIGURE 63 C–D).

Female. Seventh abdominal sternite with a large posterior groove, towards end even deeper and setose; intersegmental membrane at base upcurved, stiffened and setose on anterior side that is forming the hind margin of the groove of the seventh sternite, otherwise membranous. Subgenital plate largely membranous, apical area stiffened with a pair of transverse grooves, tip slightly bilobate ( Figs. 64 View FIGURE 64 I–J). Ovipositor rather short, substraight, very faintly down-curved, with margins gradually approaching towards apex; tip subacute ( Fig. 63H View FIGURE 63 ).

Measurements (1 male, 1 female).—body w/wings: male 22, female 24; body w/o wings: male 16, female 15; pronotum: male 3, female 3.5; tegmen: male 17, female 20; tegmen width: male 5.5, female 6.5; hind femur: male 8.5, female 8.5; antenna: male 90, female 80; ovipositor: female 9 mm.

Etymology. Named after the type locality, noun in apposition.


Zoologisches Forschungsmuseum Alexander Koenig

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