Duolandrevus (Jorama) curtipennis Chopard, 1937

Tan, Ming Kai, Gorochov, Andrei V., Baroga-Barbecho, Jessica B. & Yap, Sheryl A., 2020, New data on some crickets of the subfamilies Landrevinae, Phaloriinae and Podoscirtinae (Orthoptera: Grylloidea) from Laguna (Philippines: Luzon Island), Zootaxa 4809 (1), pp. 29-55 : 32

Duolandrevus (Jorama) curtipennis Chopard, 1937

( Fig. 1 )

Chopard (1937): 139; Otte (1988): 317; Gorochov (1996): 40; Gorochov (2016): 69

Material examined. 1 male (UPLG.19.52): Philippines, Luzon Island, Laguna, Paete , Barangay Ilaya Norte, UP Land Grant, N14.40035, E121.54249, 317.8± 5.8 m, 1936 hours, hiding underneath tree trunk, 6 September 2019, coll. M. K. Tan, J. B. Baroga-Barbecho, C. C. Lucañas and S. A. Yap, pinned and genitalia dissected ; 1 male, same locality, 6–7 September 2019, coll. J. B. Baroga-Barbecho and C. C. Lucañas, pinned and genitalia dissected (all UPLBMNH and ZRC) .

Distribution. Palawan Island, Mindoro Island, Luzon Island

Comparisons with subspecies curtipennis Chopard, 1937 and mindoro Gorochov, 2016. The male genitalia differs predominantly by the shape of posterolateral epiphallic lobes (p.ep): dorso-external process (de.l) of the posterolateral epiphallic lobe not pointing as dorsad as in D. c. curtipennis (sensu Gorochov, 1996: 40) and D. c. mindoro (sensu Gorochov 2016: 69); inner process (i.p) not as long as in D. c. mindoro but not as smoothly curved as in D. c. curtipennis . Other important characters such as shape of ectoparameres and posteromedial lobule of epiphallus very similar among the different populations.

The metanotal glands of the specimens from Luzon are also different from that of D. c. mindoro (sensu Gorochov, 2016: 69). We could not examine the metanotal gland of D. c. curtipennis because we could not access the type specimen and that it was not previously described.

Discussion. The slight differences in the genitalia and metanotal gland suggest that the populations from Palawan, Mindoro and Luzon islands can represent either unique species (or subspecies) or a single but variable species. However, we refrain from describing the population from Luzon as another species or subspecies until we have clearer understanding of their species delimitation through acoustic recording and DNA analysis, whenever possible in the future.

Figures

FIGURE 1. Duolandrevus (Jorama) curtipennis male: live habitus (A), metanotal gland in dorsal view (B), abdominal apex in dorsal view (C), genitalia in dorsal (D), ventral (E) and lateral (F) views. Scale bars: 1 mm.