Eucriotettix tridentatus, Li & Deng & Zheng & Wei, 2014

Li, Xiao-Dong, Deng, Wei-An, Zheng, Zhe-Min & Wei, Shi-Zhen, 2014, The tetrigid genus Eucriotettix Hebard (Orthoptera: Scelimeninae) from China with description of two new species, Journal of Natural History (J. Nat. Hist.) 48 (33 - 34), pp. 2083-2096 : 2086-2091

publication ID	https://doi.org/ 10.1080/00222933.2014.902143
DOI	https://doi.org/10.5281/zenodo.5195956
persistent identifier	https://treatment.plazi.org/id/8548879C-7F7A-FF8E-618B-FA26909F75B1
treatment provided by	Felipe
scientific name	Eucriotettix tridentatus
status	sp. nov.

Treatment

Eucriotettix tridentatus View in CoL sp. nov.

( Figures 1–3 View Figure 1 View Figure 2 View Figure 3 )

Male ( Figures 1A,B View Figure 1 , 2A,B View Figure 2 ). Size small. Head exerted above pronotal surface ( Figures 1A View Figure 1 , 2B View Figure 2 , 3B View Figure 3 ). Anterior margin of vertex slightly concave, not protruding beyond eyes, median carina conspicuous. Vertex very narrow, width of one eye 1.2 times width of vertex ( Figures 2A View Figure 2 , 3A,D View Figure 3 ); vertex and frontal ridge not visible in profile ( Figure 3B View Figure 3 ). Frontal ridge slightly protruding between antennae ( Figure 3B View Figure 3 ), width of longitudinal furrow narrower than width of first segment of antennae ( Figure 3C View Figure 3 ). Antenna filiform, 15-segmented, inserted between lower margin of eyes, mid segments five to six times as long as wide ( Figure 3A,C View Figure 3 ). Eyes elevated above the pronotum ( Figures 2B View Figure 2 , 3B View Figure 3 ), globular in shape, lateral ocelli placed between the middle of eyes ( Figure 3C View Figure 3 ).

Disc of pronotum with numerous small granules, mid keel of pronotum entire, upper margin of pronotum straight in profile ( Figures 1A,B View Figure 1 , 2A,B View Figure 2 ). Anterior margin of pronotum straight, slightly concave in middle, lateral keels of prozona parallel ( Figures 1B View Figure 1 , 2A View Figure 2 , 3D View Figure 3 ), humeral angle arched, with abbreviated carinae ( Figures 1B View Figure 1 , 2A View Figure 2 , 3D View Figure 3 ), flat between shoulders. posterior process of pronotum narrow, long coneshaped, reaching half to two-thirds of hind tibia ( Figures 1A,B View Figure 1 , 2A,B View Figure 2 ). Lateral lobes of pronotum turning outwards, posterior angles pointing obliquely backwards, apex of posterior angles horned ( Figures 2A View Figure 2 , 3D,F View Figure 3 ) (some individual with short spines), posterior margin of each lateral lobe with two concavities ( Figures 2B View Figure 2 , 3B View Figure 3 ). Visible part of tegmina ovate ( Figure 3E View Figure 3 ), apex rounded. Hind wings developed, almost reaching the apex of posterior process of pronotum ( Figures 1A View Figure 1 , 2B View Figure 2 ). Upper and lower margins of fore femur and mid femur straight ( Figures 2B View Figure 2 , 3G,H View Figure 3 ), width of mid femur narrower than width of tegmina ( Figure 3E View Figure 3 ). Hind femur three times as long as wide, mid keel of dorsal and ventral side of hindfemur dentate, antegenicular and genicular denticles right angle ( Figure 3I View Figure 3 ). Outer side of hind tibia with six to eight spines, inner side with four to five spines ( Figure 3J View Figure 3 ). Length of first segment of posterior tarsus longer than third, three pulvilli equal in length, apices of all pulvilli obtuse ( Figure 3K View Figure 3 ). Subgenital plate brief cone-shaped, apex sharp ( Figure 3L,M View Figure 3 ).

Body reddish-brown or yellow brown. Wings black. Fore femur and mid femur dark brown or black. Hind femur brown, hind tibia dark brown.

Female ( Figure 1C,D View Figure 1 ). Similar to male, but slightly larger. Ovipositor narrow and long, length of upper valvulae 4.7 times its width, upper and lower valvulae with slender saw-like teeth ( Figure 3N View Figure 3 ). Length of subgenital plate equal to wide, posterior margin of subgenital plate with three teeth ( Figures 2C View Figure 2 , 3O View Figure 3 ).

Measurements

Length of body ♂ 7.5–9.0 mm, ♀ 9.5–11.0 mm; length of pronotum ♂ 9.5–12.5 mm, ♀ 12.5–14.0 mm; length of hind femur ♂ 5.0–6.0 mm, ♀ 6.5–7.0 mm.

Holotype male and allotype female, China, Guizhou, Dushan, Zilinshan , 25.8° N, 107.5° E, 900 m altitude, 3 October 2012, collected by Wei-An DENG, IZSNU GoogleMaps . Paratypes: Same data, seven male; four females GoogleMaps , collected by Wei-An DENG and Shi-Zhen WEI, IZSNU (3♂ 2♀), SCBHU (4♂ 2♀) .

Diagnosis

Eucriotettix tridentatus sp. nov. is similar to Eucriotettix brachynotus Zheng and Jiang 1997 and Eucriotettix longipennis Deng et al. 2007 . The main differences are listed in Table 2.

Etymology

The species name is derived from Latin tri and dentatus, meaning posterior margin of subgenital plate of female with three teeth.

Distribution

China (Guizhou).