Lipotactes (Sublipotactes) discus productus Ingrisch, 2021

Gorochov, A. V., 2021, Taxonomy of the katydids (Orthoptera: Tettigoniidae) from East Asia and adjacent islands. Communication 14, Far Eastern Entomologist 434, pp. 1-25 : 23-24

Lipotactes (Sublipotactes) discus productus Ingrisch, 2021 , stat. n.

MATERIAL. Vietnam: 1 ♂, Dong Nai Prov., Vinh Cuu Distr., Vinh Cuu Nature Reserve (= Ma Da Forest ), TW Cuc Forest Station , 11º22ʹ51ʹʹN, 107º03ʹ44ʹʹE ,

~ 75 m, 21–29.XI 2010, L. Anisyutkin, A. Anichkin, A. Abramov, S. Kruskop; 2 ♂,

2 ♀, same province, Cat Tien National Park , 15–20.XI 2010, L. Anisyutkin, A .

Anichkin.

NOTE. Recently Ingrisch (2021) described two closely related taxa distinguished from each other mainly by the male cerci with somewhat different lengths of their thin distal parts: L. discus Ingrisch, 2021 from Cambodia and L. productus Ingrisch,

2021 from South Vietnam. However, this difference, as it seems to me, is insufficient for the species level, and more corresponds subspecies one. Thus, here these taxa are considered as two subspecies of the same species: L. (S.) d. discus having shorter male cerci and distributed in Cambodia; L. (S.) d. productus stat. n. having longer male cerci, described from Cat Tien National Park in South Vietnam and recorded here from a new but nearest locality.

Subgenus Eulipotactes Gorochov , subgen. n.

http://zoobank.org/NomenclaturalActs/ A28D51FC-3606-4781-9E3A-36CB037F08B5

Type species Lipotactes azureus Gorochov, 1996 (North Vietnam) .

DIAGNOSIS. Head rostrum not vertically lamellar; male last tergite without any posterior lobes and projections; male epiproct almost normal, roundly triangular and not reduced but directed downwards and with a pair of basal inflations often almost touching each other; male paraproct approximately as in Neolipotactes and Sublipotactes ; male cercus with strongly thickened proximal half (or two thirds) having two large and often thick (massive) proximedial processes (?= proximedial hook and tubercle in some previous subgenera) ( Figs 57, 62 ); male genitalia with three large elongate sclerites ( Figs 58–61 ).

INCLUDED SPECIES. Type species; L. vietnamicus Gorochov, 1993 (North

Vietnam); L. orlovi Gorochov, 1996 (North Vietnam); L. proximus Gorochov, 1996

(North Vietnam); L. dorsaspina Chang, Shi et Ran, 2005 (South China), but possibly only subspecies of L. azureus ; L. serratus Ingrisch, 2021 (North Vietnam); possibly

Mortoniellus sinicus Bey-Bienko, 1959 (South China) and L. tripyrga Chang, Shi et

Ran, 2005 (South China).

COMPARISON. The new subgenus clearly differs from all the previous congeners in the absence of any lobes and projections on the male last tergite in combination with the male epiproct normal but having a pair of basal inflations, the male cercus having strongly thickened proximal half (or two thirds) and two large proximedial processes, and the male genitalia having three large and elongate sclerites.

ETYMOLOGY. The new subgeneric name consists of the Latinized Greek prefix

“eu-” (good, true) and the generic name Lipotactes .

Subgenus Analipotactes Gorochov , subgen. n.

http://zoobank.org/NomenclaturalActs/ E1193F98-C765-497A-B456-C4AE54528327

Type species Lipotactes amicus Gorochov, 1993 (Central Vietnam) .

DIAGNOSIS. Head rostrum not vertically lamellar; male last tergite with short but distinct posteromedian lobe having a pair of angular (almost spinule-like)

projections posterolaterally; male epiproct medium-sized, roundly trapezoidal but rather narrow, directed downwards and slightly forwards; male paraproct wide but somewhat elongate, horizontally lamellar, with almost roundly angular apical part more or less curved upwards; male cercus elongate, with medial lamellar lobule

(lamella) more or less similar to that of Sublipotactes but located in distal half of cercus, and with distal (lateral) cercal part somewhat curved medially and slightly widened apically (but this widening visible only from behind or from side); male genital plate with a pair of distinct medial spinules near bases of styles (this character unique for this genus; Fig. 64 ); male genitalia membranous with almost semimembranous apical part ( Fig. 65 ).

INCLUDED SPECIES. Type species only.

COMPARISON. The new subgenus is distinguished from all the other congeners by the male last tergite having a distinct posteromedian lobe, in combination with the male cercus having a medial lamella in its distal half (instead proximedial lamella,

hook or spine) as well as the distal (lateral) part of this cercus curved medially and slightly widened apically, and with the presence of a pair of spinules near the bases of the styles in the male genital plate.

ETYMOLOGY. This subgeneric name consists of the Latinized Greek prefix

“ana-” (against, anew) and the generic name Lipotactes .

Figures

Figs 41–65. Lipotactes spp., schematically: 41 – L. (Prolipotactes) hamatus wartabone