New and enigmatic cockroaches (Dictyoptera: Blattodea) of Guyana Author Evangelista, Dominic A. Author Sylvain, Erdine Author Mendoza, Ciara Mae Author Guzman, Kimberly text Journal of Natural History 2016 2016-05-31 50 2249 2276 journal article 21212 10.1080/00222933.2016.1193647 2e0c16cb-bcc4-4c05-bb52-68f336914b43 1464-5262 3993127 D6143810-5DA1-4E84-89D0-15B51113B364 Xestoblatta surinamensis Bruijning, 1959 ( Figure 10 ) 6 adult males, 16 adult females, 1 juvenile . Voucher numbers: DEIWO0197 , DEIWO0415 , DEIWO0441 , DEIWO0480 , DEIWO0457 , DEIWO0354 , DEIWO0497 , DEIWO0503 , DEIWO0382 , DEIWO0420 , DEIWO0184 , DEIWO0373 , DEIWO0442 , DEIWO0504 , DEIWO0305 , DEIWO0229 , DEIWO0292 , DEIWO0306 , DEIWO0419 , DEIWO0445 , DEIWO0449 , DEIWO0450 , DEIWO0458 . Collection locality: Turtle Mountain , Iwokrama River Lodge and Atta lodge in Iwokrama Forest , Guyana . GPS: 4°39 ” N, 58°41 ʹ W ; 4°43 ʹ N , 58°43 ʹ W ; 4°14 ʹ N , 58°54 ʹ W . Collection dates: 20 – 29 December 2014 . Collectors: D. Evangelista, M. Davis, M. Johnny, M. Carter, O. Ambrose. Table 3. Allometric data for Ischnoptera galibi Hebard. All measurements are in millimetres. Some specimens were damaged in which case the measurement could not be completed (NA) or had to be estimated (est.). Given the large number of specimens we measured, we summarize our measurements as average values ± their standard deviation.

Ischnoptera galibi
Adult ♂	Adult ♂	Adult ♂
Adult ♂ (Karanambu)	Adult ♀ (Karanambu)	(CEIBA)	(CEIBA)	(Iwokrama)
DEKBO 0345, DEKBO	DEKBO 0342, DEKBO
0351, DEKBO 0344,	0343, DEKBO 0482,	DECBA2210,	DECBA2211,	DEIWO
Morphological feature			DEKBO 0259	DEKBO 1534	DECBA2212	DECBA2019	0120
Head	Greatest width		1.8±0.22	1.5±0.04	1.5±0.05	1.6±0.05	1.5
Medial length		2.2±0.22	2.0±0.07	2.0±0.05	2.1±0.05	1.9
Pronotum Greatest width			2.9±0.14	2.9±0.08	3.0±0.00	3.1±0.05	2.9
Medial length		1.8±0.35	2.1±0.04	2.0±0.00	2.0±0.00	1.8
Leg	Front	Femur	1.9±0.09	2.0±0.08	2.0±0.00	2.2±0.15	1.6
Tibia	1.4±0.52	1.1±0.05	1.1±0.05	1.2±0.15	1.1
Middle Femur		2.1±0.05	2.2 ±0.18	2.3±0.30	2.3±0.25	2.1
Tibia	2.0±0.04	2.1±0.05	2.3±0.20	2.4±0.25	2.0
Hind	Femur	2.6±0.29	2.7±0.15	2.8±0.15	2.4±0.15	2.4
Tibia	3.0±0.07	3.2±0.11	3.1±0.05	3.4±0.25	3.0
Cerci length		1.5±0.10	1.9±0.09	2.0±0.05	1.8±0.35	1.7
Tegminal length		9.0±0.54	8.2±0.16	8.7±0.20	9.0±0.00	8.2
Total body length		9.8±0.64	8.9±0.51	9.3±1.30	8.3±0.00	8.5 (est)

Morphological identification We identified these specimens as Xestoblatta Hebard, 1916 through the fore leg anteroventral margin spination (spines all large), modified styles and presence of abdominal tergal gland. We then further associated these species with Xestoblatta surinamensis Bruijning, 1959 by the shape of the right style being clubbed, and the modified shape of dorsal abdominal tergum 7. Collection/ecological information This species was mostly collected in pitfall traps baited with beer. It was fairly commonly caught by hand at night as well. This is the first record of this species in Guyana . Known geographical distribution Guyana (Iwokrama forest; new record), Suriname , French Guiana, and Brazil (Para)