Neorhaphidophora, Gorochov, 1999

Dawwrueng, Pattarawich, Gorochov, Andrei V., Tanomtong, Alongklod & Suwannapoom, Chatmongkon, 2020, Contribution to the knowledge of Rhaphidophorinae (Orthoptera: Ensifera: Rhaphidophoridae) from Thailand: three genera Neorhaphidophora, Eurhaphidophora and Minirhaphidophora, Zootaxa 4853 (2), pp. 235-253 : 237

Key to all known species of Neorhaphidophora (excluded N. brevispinula and N. longispinula which need a further study)

1. Male epiproct with a pair of short proximal lobes directed upwards, or with a pair of rather long subproximal processes directed backwards; its apical (directed forwards) part is long and deeply inserted into the anal cavity (above the paraprocts or between them)............................................................................................... 2

- Male epiproct with a pair of short subproximal lobes directed backwards; its apical (directed forwards) part is short and almost inserted into the genital cavity (under paraprocts)........................................ N. steineri Gorochov, 2010

2. Paired processes (lobes) of male epiproct distinctly protrudes beyond paraprocts; male genital plate almost without spiniform tubercles beside the styli................................................................................ 3

- Paired lobes (processes) of male epiproct not reaching apices of paraprocts; male genital plate with distinct spiniform tubercles beside styli.......................................................................................... 4

3. Apical (directed forwards) part of male epiproct with lateral surfaces around the ventromedian groove but not pressed to each other; male genital plate with moderately short styli (styli in profile are almost twice as long as they are wide); female genital plate with obtusely angular apex and small membranous area in the middle of this plate................................................................................................... N. valentinae proxima Gorochov, 2012

- Apical (directed forwards) part of male epiproct with lateral surfaces around the ventromedian groove pressed to each other; male genital plate with very short styli (styli are in profile and almost 1.5 times as long as they are wide); female genital plate with widely rounded apex and membranous area running from the middle to the apex of this plate......................................................................................... N. valentinae valentinae Gorochov, 1999

4. Paired lobes (processes) of male epiproct are narrower in profile (in the shape of distinct tubercles); male genital plate with styles almost the same as in N. v. proxima in profile (see above), and with an almost transverse (somewhat sinuated) posterior edge between them; median sclerotized plate of female genital plate is less than 1.5 times as wide as it is long............................................................................................. N. grata Gorochov, 2012

- Paired lobes (processes) of male epiproct rather wide in profile (in the shape of inflated convexities); male genital plate with styles clearly wider in profile and with a distinct angular posteromedian notch; female genital plate with median sclerotized plate more than 1.5 times as wide as it is long............................................... N. siamensis sp. nov.