Criotettix undatifemurus Deng, 2019

Deng, Wei-An, Chen, Dan-Ni, Sheng, Qin, Zhao, Cong-Lin & Wu, Fei-Peng, 2019, An annotated catalogue of the pygmy grasshoppers of the genus Criotettix Bolívar 1887 (Orthoptera: Tetrigidae) with two new Criotettix species from China, Zootaxa 4629 (4), pp. 498-518 : 509

25. Criotettix undatifemurus Deng , sp. nov.

( Figs. 4–6 )

Description. Female (holotype). Body small-sized, slender. Head not exserted above pronotal surface. anterior margin of vertex straight in dorsal view and not protruding beyond eyes, 0.8 times narrower than width of one eye; lateral margins turned backward; median carina reaching the middle of vertex. Frontal ridge slightly straight, it and vertex forming an obtuse round shape in profile, frontal ridge protruding archly between antennae, width of longitudinal furrow distinctly narrower than width of first antennal segment. Antenna filiform, 15-segmented; length of a segment in middle of antenna about 4–5 times longer than its width, inserted between lower margins of eyes. Eyes globose. Lateral ocelli placed in middle of anterior margins of eyes.

Disc of pronotum coarsely, with numerous small tubercles and notchs; in dorsal view, anterior margin of pronotum truncate, median carina of pronotum completed except median carina before middle prozona invisible, median carina of pronotum lamellate elevated between anterior transverse sulcus and posterior transverse sulcus; in profile, upper margin of pronotum undulated. Lateral carinae of prozona thick and slightly constricted backwards; humeral angle nearly rounded, lateral margins of pronotum behind shoulders constricted inwards; disc of pronotum slightly convex between shoulders, with a pair of abbreviated carinae between shoulders; pronotum short, caudal end of pronotum narrow, long cone-shaped, apex slightly surpassing apex of hind femora and reaching base of hind tibia, length of hind process which surpassing behind apex of hind femora about 1.5 mm. Lateral lobes of pronotum turning outwardly, posterior angles directed distinctly transversely, apex of posterior angles acute and subspiniform, posterior margin of each lateral lobe of pronotum with two concavities. Tegmina long, ovate, apex sharply rounded. Hind wings reaching apex of posterior process of pronotum. Lower margins of fore femora slightly undulated and lower margins of midfemora distinct undulated; width of middle femora equal to or slightly wider than width of visible part of tegmina. Hind femur 3.0 times as long as wide, upper margin finely serrated and lower margin smooth, antegenicular right angled and genicular denticles acute. Outer side of hind tibia with five to seven spines, inner side with four to five spines. Length of first segment of posterior tarsus longer than third, first and second pulvillus small, third pulvillus slightly large, apices of three pulvilli acute. Ovipositor narrow and long, length of upper valvulae 3.5 times its width, upper and lower valvulae with slender sawlike teeth. Length of subgenital plate shorter than its width, middle of posterior margin of subgenital plate with a triangular projecting.

Body brown.Antenna dark brown. Hind wings black. Fore and middle femora dark brown, fore and middle tibia dark brown and with three light rings; hind femur brown to dark brown, outer part and inner part lower side black; hind tibia dark brown.

Male. Similar to female, but smaller and narrower. Length of hind process of pronotum which surpassing behind apex of hind femora about 1–1.5 mm, width of middle femora distinct wider than width of visible part of tegmina. Subgenital plate cone-shaped.

Measurements (mm). Length of body: ♂ 7.5–8.0 mm, ♀ 8.5–9.0 mm; length of pronotum: ♂ 8.5–9.0mm, ♀ 9.5– 10.0 mm; length of hind femur: ♂ 4.8–5.0mm, ♀ 5.8–6.0 mm.

Type material. Holotype: 1♀, 31 July 2018, collected by Wei-An DENG, EMHU . Paratypes. 6♂ 4♀, same data, type locality, EMHU .

Type locality. China, Yunnan prov., Mengla (Dachoushui) ( Figure 8 ), 21°22.2536ʹ N, 101°31.4651ʹ E, 680m alt .

Diagnosis. New species is similar to Criotettix shiwanshanensis Deng & Zheng, 2015 from which it differs in width of vertex 0.8 times narrower than width of one eye (width of vertex equal to width of one eye in C. shiwanshanensis ); lateral margins of pronotum behind shoulders constricted inwards (lateral margins of pronotum behind shoulders without constricted inwards in C. shiwanshanensis ); posterior angles of lobes of pronotum acute and subspiniform (posterior angles of lobes of pronotum with short spines in C. shiwanshanensis ); lower margins of midfemora distinct undulated (lower margins of midfemora straight in C. shiwanshanensis ). It appears similar also to Criotettix strictvertex Zheng, Wei & Li, 2009 , but differs from the latter by disc of pronotum coarsely, with numerous small tubercles and notchs (disc of pronotum smooth in C. strictvertex ); pronotum short, apex reaching base of hind tibia, length of hind process which surpassing behind apex of hind femora about 1.5 mm (pronotum long, apex reaching two-thirds of hind tibia, length of hind process which surpassing behind apex of hind femora about 4.5 mm in C. strictvertex); lower margins of fore femora undulated (lower margins of fore femora straight in C. strictvertex); median carina of lower margin of hind femur smooth (median carina of lower margin of hind femur with six to seven teeth in C. strictvertex).

Figures

FIGURE 4. Criotettix undatifemurus Deng, sp. nov., female, holotype: A—body in dorsal view; B—body in lateral view; C—head in dorsal view; D—head and pronotum in dorsal view. (scale bar = 1 mm).

FIGURE 5. Criotettix undatifemurus Deng, sp. nov., female, holotype: A—head in lateral view; B—head in frontal view; C—left fore femur in lateral view; D—left mid femur in lateral view; E—left hind femur in lateral view; F—left hind tibia in dorsal view; G—left posterior tarsi in lateral view; H—Ovipositor in lateral view; I—subgenital plate of female in ventral view. (scale bar = 1 mm).

FIGURE 6. Criotettix undatifemurus Deng, sp. nov., male, paratype: A—body in dorsal view; B—body in lateral view; Csubgenital plate of in lateral view. (scale bar = 1 mm).

FIGURE 8. Collection localities of Criotettix longispinus sp. nov. and Criotettix undatifemurus sp. nov.