Bolivaritettix anaglypticus Storozhenko, 2018

Storozhenko, Sergey Yu., 2018, Pygmy grasshoppers (Orthoptera: Tetrigidae) of Vietnam: the genus Bolivaritettix Günther, 1939, Zootaxa 4374 (4), pp. 497-523 : 510-512

Bolivaritettix anaglypticus Storozhenko , sp. nov. Figs 3 , 9 , 37–43

Material examined. Holotype—female, Vietnam: Lao Cai Province, Sa Pa District , Fan Si Pan Mt. , 22o18’56’’ N, 103o49’35’’ E, 1400–1500 m, 26 May–6 June 1999, coll. N.L. Orlov. ( ZISP). Paratypes: 3 females, same data as for holotype ; 1 male, 1 female, same locality, 22o18’59’’ N, 103o49’16’’ E, 1200 m, 12–25 May 1999, coll. N.L. Orlov ( ZISP). (Altogether 5 females and 1 male).

Description. Female. Body large-sized for this genus. Antennae filiform, 16–17-segmented, 1.8–1.9 times as long as fore femur; middle segments (seventh–ninth) 8–9 times as long as wide. Antennal grooves situated between lower margins of eyes. Fastigium of vertex 1.9–2 times as wide as one compound eye seen from above; anterior margin of vertex straight, not reaching the frontal line of eyes; lateral margins of vertex almost parallel; median carina of fastigium short; transverse carinae not reaching anteriorly the median carina; supraocular lobes vestigial; fossulae deep. Compound eyes not elevated above pronotum in lateral view. Lateral ocelli situated between middle of eyes. Frontal ridge in lateral view strongly excised between lateral ocelli, broadly rounded between eyes and weakly excised below median ocellus; in frontal view, this ridge gently diverging downwards and narrow (first antennal segment 1.2 times as wide as ridge near the base of antennae). Pronotum in dorsal view with straight anterior margin; posterior process of pronotum surpassing apex of hind femora for 1.8–2 mm. Disc of pronotum behind the shoulders without depressions; posterior process of pronotum rugulose; apex of this process narrowly rounded. Lateral sides of shoulders broadly rounded in dorsal view. Median carina of pronotum in profile gently raised before shoulders and low behind shoulders. Prozonal carinae well defined, distinctly constricted backwards; prozona almost as long as wide. Humero-apical carinae distinct; interhumeral carinae weak. Tegminal sinus deep; lower part of lateral lobe of pronotum in dorsal view forming obliquely truncate lobule. Infrascapular area short. Tegmina broad with broadly rounded apex; visible part of tegmen 2.4–2.7 times as long as wide; this part of tegmen 1.1–1.2 times as wide as mid femur. Hind wings reaching the apex of posterior process of pronotum. Fore femur 4.5–4.6 times, mid femur 4.5–4.8 times as long as wide; upper and lower side of fore and mid femora straight. Hind femur 3.2–3.4 times as long as wide. Upper side of hind tibia with 7–8 outer and 5–7 inner spines, with margins finely serrated. First tarsal segment of hind leg as long as third one; ventral side of first tarsal segment with three triangular pads, apical pad slightly longer than other pads; third tarsal segment not swollen. Epiproct triangular, with pointed apex. Subgenital plate as long as wide; posterior margin of plate deeply excised and with angular posterior process near middle. Cerci conical, with attenuated apices, 1.9 times as long as wide near cercal base. Valves of ovipositor long and narrow, dentate; length of upper valve 5.9–6 times as great as its maximum width; length of lower valve 7.8–9 times as great as its maximum width.

General colouration of body brown. Head and eyes brown; antennae light brown. Disc of pronotum dark or light brown; lateral lobes of pronotum blackish brown. Tegmina brown, hind wings black. Fore and mid femora blackish brown. Fore and mid tibia brown with two blackish rings. Hind femora including the ventral external area blackish brown. Hind tibiae black without light marks. All tarsal segments light brown. Tergites black with brown marks. Sternites and subgenital plate light brown with black marks. Epiproct blackish brown. Cerci and ovipositor light brown.

Male. General appearance similar to that of female. Antennae 16-segmented; 1.7 times as long as fore femur; middle segments 7.5–8 times as long as wide. Fastigium of vertex 1.8 times as wide as one compound eye seen from above; carinae of vertex as in female. First antennal segment 1.2 times as wide as ridge near the base of antennae. Pronotum as in female; posterior process of pronotum surpassing apex of hind femora for 2.2 mm. Tegmina with broadly rounded apex; visible part of tegmen 2.7 times as long as wide; this part of tegmen as wide as mid femur. Hind wings reaching the apex of posterior process of pronotum. Legs as in female; for femur 4.3 times, mid femur 4.5 times, hind femur 3.4 times as long as wide; upper side of hind tibia with 6 outer and 5 inner spines. Epiproct triangular, with pointed apex. Subgenital plate 1.9 times as long as wide; its apex weakly excised. Cerci as in female.

General colouration of body as in female. Epiproct, subgenital plate and cerci brown.

Measurements (mm). Body: male 12.0, female 12.0–13.7; pronotum: male 13.2, female 12.9–14.0; antenna: male 4.4, female 5.3; tegmen male 1.6, female 1.7–1.9; fore femur: male 2.6, female 2.7–2.9; mid femur: male 2.7, female 2.7–2.9; hind femur: male 7.3, female 7.6–8.1; ovipositor 2.5–2.6.

Distribution. Vietnam (Lao Cai Province).

Comparison. New species is most similar to Bolivaritettix tridentate Zheng et Ou, 2003 from Yunnan in China ( Zheng & Ou, 2003) but differs from latter by the shape of frontal ridge and mid femora, as well as by large size (in B. tridentate , the frontal ridge in lateral view weakly excised between lateral ocelli, the lower side of mid femora sinuate, and size smaller, the length of female pronotum 10.5 mm, hind femur 7.0 mm). B. anaglypticus sp. nov. is also similar to B. lativertex but latter species is characterized by disc of pronotum behind the shoulders with a pair of shallow depressions, by median carina of pronotum in profile low and almost straight, and by fore and mid tibia completely brown (in the new species, pronotum behind the shoulders without depressions, median carina gently raised before shoulders and fore and mid tibia brown with two blackish rings). Moreover, B. lativertex occupied mountain region in central part of northern Vietnam (about 60–150 km NW Hanoi City) at altitude 200–800 m, while B. anaglypticus sp. nov. is known from Fan Si Pai Mountain, the highest in Indochina and situated near Chinese-Vietnamese border, at altitude 1200–1500 m.

Etymology. This species name is the Latinized Greek “ anaglypticus ” (chased).

Figures

FIGURES 1–4. Bolivaritettix, female head and anterior part of pronotum, lateral view. 1, B. sculptus; 2, B. chinensis; 3, B. anaglypticussp. nov.; 4, B. similis sp. nov. Scale bars 1 mm.

FIGURES 5–13. Bolivaritettix, head and anterior part of pronotum, dorsal view. 5, B. sculptus, female; 6, B. vietnamensis. sp. nov., female; 7, B. chinensis, female; 8, B. humeralis, female; 9, B. anaglypticus sp. nov., female; 10, B. constrictus sp. nov., male; 11, B. abruptus sp. nov., female; 12, B. celaenotus, female; 13, B. similis sp. nov., female Scale bars 1 mm.

FIGURES 37–43. Bolivaritettix anaglypticus sp. nov. 37, female body, lateral view; 38, the same, dorsal view; 39, female head, frontal view; 40, female apex of abdomen, ventral view; 41, male body, lateral view; 42, the same, dorsal view; 43, male apex of abdomen, ventral view.