Tamdaotettix (Tamdaotettix) minipullus, Gorochov & Storozhenko, 2019

Tamdaotettix (Tamdaotettix) minipullus View in CoL

sp. nov.

( Figs 142–145, 150, 151)

Holotype. Male, Northern Vietnam, Cao Bang Prov., Phia Oac – Phia Den National Park , eastern slope of Phia Oac Mt , 40 km W of Cao Bang Town , 22°36'27''N, 105°52'00''E, 1600–1800 m, 22.V–6. VI.2018, L. Anisyutkin, A. Abramov ( ZIN). GoogleMaps

Paratypes. One male, 11 nymphs (4 males, 7 females), same data as for holotype ( ZIN) GoogleMaps .

Description. Male (holotype). Body similar to that of T. (T.) ailaoshanicus but with following differences: colouration darker, greyish brown with dark brown tergites (four anterior tergites with lower parts greyish brown, and with yellowish marks on dorsum almost as in thoracic tergites of T. ailaoshanicus ), almost dark brown two thirds of hind femur, and light brown tarsi and venter of body (except for brown genital plate) as well as spots on fore and middle femora and on all tibiae; rostral tubercles with more angular apices; four anterior tergites shiny, but two posterior ones with matt lower parts; hind femur with 5–6 ventral inner spinules and with apical denticle as in T. (T.) ailaoshanicus ; armament of tibiae and hind basitarsus characteristic [dea, v2, v2, v3a / d2a, ve, v~2, v3a / d53e-50i (d49e-54i), d2sa, 6a / d5c (d6c), dac]; sixth abdominal tergite with posteromedian process very long (somewhat protruding beyond apex of posteromedian process of seventh abdominal tergite), distally spine-like, lacking a pair of apical denticles, and with widening in proximal half ( Figs 142, 143); seventh abdominal tergite with rather long and moderately wide posteromedian process having characteristic apex (this apex with one small median denticle and a pair of rounded ventral lobules as well as with rather high and almost semiglobular inflation located above this denticle; Figs 142–144); paraproctal process short, strongly and angularly curved upwards at base ( Fig. 143); genitalia with dorsomedian lobe having also oval apical part which somewhat more separated from rest of this lobe ( Figs 150, 151).

Variations. Second male with armament of legs and shape of tergal processes and paraprocts insignificantly different ( Fig. 145).

Nymphs. Nymphs similar to imago in general appearance, but body slightly smaller, processes of tergites and paraprocts in male nymphs slightly shorter (process of sixth abdominal tergite reaching apex of process of seventh abdominal tergite but not projected behind it), these processes almost undeveloped in female nymphs, male genitalia with more or less angular apex of dorsomedian lobe, and female genital plate shorter than in adult female of T. (T.) ailaoshanicus and with widely truncate distal part.

Length in mm (male). Body 10.5–12; pronotum 4.5–5.1; fore femur 6.7–7.2; hind femur 14– 15.5; hind tibia 15.2–17; hind basitarsus 3–3.4.

Comparison. The new species is most similar to T. (T.) pullus Gor. in the structure of male abdominal apex (especially in the shape and length of process of sixth abdominal tergite) (see Figs 137, 139–141 and 142, 143, 145), but it differs from the latter species in the body much smaller, apex of process of seventh abdominal tergite in male higher (less transverse) from behind (see Figs 138 and 144), male paraproct with shorter and strongly curved process (this process almost straight in T. pullus ; see Figs 141 and 143, 145), and dorsomedian lobe of imaginal male genitalia with rounded (not angular) apex.

Etymology. The new species name consists of the Latin prefix “mini-” (small) and species name T. pullus , because the new species is very similar to the latter congener but having much smaller body.