Amnestus calakmulensis, Martinez & Peredo, 2005

Amnestus calakmulensis new species

Figs. 1B View Fig , 2B View Fig , 3B View Fig , 4B View Fig , 5B View Fig , 6B View Fig

Description. ( Fig 1 B View Fig ). Tylus longer than juga, ventral margin of prosternal carina slightly toothed, ( Fig. 2 B View Fig ), fore tibia flat with five spines on external margin ( Fig. 4 B View Fig ); head, pronotum, scutellum, abdomen, and costal margin dark brown; antenna, rostrum, marginal carina of pronotum, and legs pale yellow.

Head. Anterior half without punctures: tylus longer than jugum, rostrum reaching middle part of metasternum.

Thorax. Pronotum with transverse impression strongly marked with setigerous punctures, anterior margin concave, anterolateral margins carinated and toothy, posterior margin rounded. Propleura shinny; prosternal carina high with its anterior margin slightly toothy, and with ventral margin rounded ( Fig. 2 B View Fig ). Mesopleura with evaroratorium flat, extended along pleura, on metapleura it reaches only middle part of pleura, peritreme elongate, slightly curved, and posterior margin with a rough surface area well defined ( Fig. 3 B View Fig ). Legs. Fore tibia flattened with five robust spines on external margin ( Fig. 4 B View Fig ) fore femur with a bifid spine on middle part of internal margin, hind femur with a simple spine on internal margin, near apex ( Fig. 5 B View Fig ). Scutellum. Wider than long, with punctures arranged on lines over anterolateral margins and punctures uniformly arranged on disc. Hemelytra. Clavus, and corium with punctures arranged on longitudinal rows, middle part of apical region of mesocorium with punctures, distal margin sinuate, hemelytral membrane hyaline, longer than apex of abdomen. Abdomen. Shinny, without lateral setae.

Male genitalia. Parameres small with an apical triangular peg elevated apically in lateral view. With three setigerous punctures ( Fig. 6 B View Fig ).

Male measurements. (n = 8) Body length 2.58 ± 0.02; head length 0.46 ± 0.05; width across eyes 0.55 ± 0.02; interocular distance 0.32 ± 0.02; interocellar distance 0.18 ± 0.008; antennal segments: I 0.11 ± 0.008, II 0.04 ± 0, III 0.25 ± 0.01, IV 0.23 ± 0.01, V, 0.26 ± 0.04; rostral segments: I 0.21 ± 0.01, II 0.22 ± 0.02, III 0.24 ± 0.04, IV 0.20 ± 0.01; pronotum length 0.92 ± 0.09; width across anterior margin 0.59 ± 0.01; width across humeral angles 1.33 ± 0.04; scutellum length 0.56 ± 0.07; fore femur 0.45 ± 0.03; fore tibia 0.57 ± 0.01; hind femur 0.66 ± 0.02; hind tibia 0.75 ± 0.04; hind tarsi: I 0.06 ± 0, II 0.04 ± 0, III 0.10 ± 0.

Female measurements. (n = 5) Body length 2.8 ± 0.22; head length 0.55 ± 0.05; width across eyes 0.63 ± 0.05; interocular distance 0.35 ± 0.03; interocellar distance 0.21 ± 0.03; antennal segments: I 0.13 ± 0.01, II 0.04 ± 0, III 0.26 ± 0.03, IV 0.24 ± 0.04, V 0.26 ± 0.02; rostral segments: I 0.23 ± 0.05, II 0.25 ± 0.01, III 0.20 ± 0, IV 0.18 ± 0; pronotum length 0.9 ± 0.03; width across anterior margin 0.66 ± 0.06; width across humeral angles 1.54 ± 0.1; width across humeral angles 0.65 ± 0.08; scutellum width 0.84 ± 0.04; fore femur 0.46 ± 0.01; fore tibia 0.59 ± 0.04; hind femur 0.84 ± 0.04; tibia 0.90 ± 0.05; hind tarsi: I 0.07 ± 0.01, II 0.03 ± 0, III 0.08 ± 0.

Types. Holotype, male: MEXICO, Campeche, Calakmul, Balamku , 31 May 2001 C. Mayorga, L. Cervantes ( CNIN) . Paratypes: MEXICO, Campeche: 7 males, 5 females, same data as holotype, litter of Ficus cotinifolia H.B.K. ( CNIN, IEXA) .

Distribution. Mexico, Campeche.

Etymology. Named for the the Mayan area of Calakmul, in which this species was collected.

Discussion. Pronotum with transverse impression strongly marked with a series of setigerous punctures ( Fig. 1 B View Fig ) a character that the other five species lack; prosternal carina high, with anterior margin slightly toothy, and ventral margin rounded ( Fig. 2 B View Fig ). Peritreme elongated and slightly curved, posterior margin of metapleura with a band of wrinkles well defined ( Fig. 3 B View Fig ). Parameres small with a triangular peg elevated apically, with three setigerous punctures ( Fig. 6 B View Fig ) Fore tibia flattened, with five robust spines on external margin ( Fig. 4 B View Fig ); hind femur with a single spine near apex of internal margin ( Fig. 5 B View Fig ).