Ischnoptera galibi Hebard, 1926

Evangelista, Dominic A., Sylvain, Erdine, Mendoza, Ciara Mae & Guzman, Kimberly, 2016, New and enigmatic cockroaches (Dictyoptera: Blattodea) of Guyana, Journal of Natural History 50, pp. 2249-2276 : 2262-2263

Ischnoptera galibi Hebard, 1926

( Figures 8 , 9 ; Table 3)

7 adult males, 2 adult females, 2 juveniles. Voucher numbers: DECBA3301 , DECBA1986 , DEIWO0120 , DEKBO0342 , DEKBO0343 , DEKBO0482 , DEKBO1534 , DEKBO0345 , DEKBO0351 , DEKBO0344 , DEKBO0259 . Collection locality: CEIBA Biological Station , Madewini , Guyana ( CBA), Saw Mill , Iwokrama Forest , Guyana ( IWO), Karanambu EcoLodge, Rupununi, Guyana ( KBO) . GPS: 6°29 ʹ N, 58°13 ʹ W ( CBA), 4°36 ʹ 33 ʺ N, 58° 43 ʹ 53 ʺ W ( IWO), 3°46 ʹ N, 59°20 ʹ W ( KBO) . Collection dates: June 2011 – June 2013 ( CBA), 27 December 2014 ( IWO), June 2013 and January 2015 ( KBO) . Collectors: I. Biazzo, D. Evangelista, M. Kohli, M. Sanchez, N. Sroczinski and J. L . Ware ( CBA) . M. Davis, M. Johnny, M. Carter ( IWO) . M. Wilson, O. Ambrose ( KBO) .

Morphological identification

We identified this as Ischnoptera because of the presence of the dorsal tergal gland of the form of Ischnoptera and fore leg spination. We further identified this to species based on the appearance of the subgenital plate (styli that appear to be productions of the plate rather than distinct appendages) and the supra-anal plate shape (particularly the cone near the sinistral cercus and deflexed lateral sides). These characters are important for identification of this species as it otherwise appears very similar to Ischnoptera paramacca Hebard, 1926 . Unfortunately, we are unaware of characters that separate the females of these two species. We have identified females and juveniles of I. galibi at Iwokrama and Karanambu only because I. paramacca was not collected at these two sites.

Collection/ecological information

We found this species to be numerous in the secondary coastal rainforests (Madewini) and even more numerous in the forests of the Rupununi savannah. We also found that this species was almost entirely absent from our collection localities in Iwokrama rainforest, except in the leaf litter at the edges of a deforested saw mill. Given this and data included with another publication (Evangelisa, Russell, Bourne & Ware, pers. comm.), we might categorize this species as having an affinity for disturbed or secondary successional forests.

Known geographical distribution

Guyana (new record), Suriname, and French Guiana.

Figures

Figure 8. Ischnoptera galibi Hebard, 1926. Adult male. Voucher number: DEIWO0120. (a) Ventral aspect of male. (b) Dorsal aspect of male.

Figure 9. Ischnopter galibi Hebard, 1926. Adult male. (a) Ventral subgenital plate. Voucher number: DEKBO0869. (b) Ventral supra-anal plate. Voucher number: DEKBO0348. (c) Terminal terga showing supra-anal plate and tergal gland. Voucher number: DEKBO0344. (d) Right phallomere (R2). (e) Left phallomere (L3). (f). Medial phallomere (Lvm). Voucher number: DEKBO0869. (g) Wing. Voucher number: DEKBO0634.