Amnestus longinoi Mayorga and Cervantes

Martinez, Cristina Mayorga & Peredo, Luis Cervantes, 2014, The genus Amnestus Dallas (Hemiptera: Heteroptera: Cydnidae: Amnestinae) in Mexico, with the description of eleven new species from Chiapas, Zootaxa 3779 (4), pp. 401-432 : 413-414

Amnestus longinoi Mayorga and Cervantes n. sp.

( Figs. 2c , 4g , 5g , 6g , 7g , 8g )

Diagnosis. Tylus longer than juga; pronotum slightly convex dorsally with deep and dense punctures on all surfaces, lateral margins carinate; prosternal carina higher on anterior half and curved apically. ( Fig. 4g ).

Description. Head, pronotum, prosternal carina, and abdomen castaneous; antennal and rostral segments and legs pale brown; scutellum and a small macula on basal margin of corium dark brown; hemelytra pale yellow.

Head. Posterior half with scattered punctures; tylus longer than juga and with four pegs; juga with five pegs; antennal segment II very short and segment V longer than segments III or IV; rostrum reaching base of metasternum. Thorax. Pronotum. Anterior lobe concave with scattered punctures, anterolateral margins entire, slightly carinate; posterior lobe with dense punctures. Propleura. Shiny and smooth; prosternal carina high ( Fig. 4g ). Mesopleura. Flat, evaporatorium reaching anterior and lateral margins of pleura. Metapleura. Evaporatorium reaching posterior and lateral margins of pleura; peritreme elongated and shiny with apex slightly curved, and posterior margin entire ( Fig. 5g ). Legs. Fore tibiae with six robust spines on dorsal margin; fore femora with a bifid spine on posterior half of ventral surface ( Fig. 6g ). Hind femora with a small and simple spine near apex on ventral margin, and another spine near apex on dorsal margin ( Fig. 7g ). Scutellum. Triangular with acute apex, disc with punctures arranged in rows along lateral margins, and evenly distributed on disc. Hemelytra. Clavus and corium with punctures arranged in rows; membrane hyaline and surpassing apex of abdomen. Abdomen shiny, with fine hairs evenly distributed.

Male genitalia. Parameres small, divided mesially with long setae dorsally and short setae ventrally ( Fig. 8g ).

Male measurements (n=5). Body length 3.2 ± 0.2; head length 0.41 ± 0.03; width across eyes 0.65; interocular distance 0.4; interocellar distance 0.2; antennal segments: I 0.15, II 0.1, III 0.3, IV 0.3, V 0.35; rostral segments: I 0.3, II 0.35, III 0.38 ± 0.03, IV 0.24 ± 0.03; pronotum length 1.0; width across anterior margin 0.75; width across humeral angles 1.5 ± 0.2; scutellum: length 0.67 ± 0.08; width 0.86 ± 0.06; length of fore femora 0.60; fore tibiae 0.65; fore tarsi: I 0.1, II 0.05, III 0.15; length of hind femora 0.81 ± 0.06; hind tibiae 0.90; hind tarsi, I 0.1, II 0.05, III 0.15.

Female measurements (n=4). Body length 3.1 ± 0.4; head length 0.47 ± 0.02; width across eyes 0.65; interocular distance 0.4; interocellar distance 0.2; antennal segments: I 0.15, II 0.10, III 0.3, IV 0.3, V 0.35; rostral segments: I 0.26 ± 0.04, II 0.35, III 0.35, IV 0.27 ± 0.02; pronotum length 0.92 ± 0.1; width across anterior margin 0.72 ± 0.02; width across humeral angles 1.5 ± 0.1; scutellum: length 0.71 ± 0.08, width 0.85 ± 0.1; length of fore femora 0.53 ± 0.06; fore tibiae 0.62 ± 0.02; fore tarsi: I 0.1, II 0.05, 0.15; length of hind femora 0.78 ± 0.06; hind tibiae 0.97; hind tarsi, I 0.1, II 0.05, III 0.15.

Holotype. Male. Mexico: Chiapas, Playon de la Gloria 160 m, 16° 9' 37" N, 90° 54' 05" W, 25–26-VI-2008, mature wet forest ex sifted leaf litter, DB, DJC, IMDB, MGB, UC ( CNIN). Paratypes. Playon de la Gloria 160 m, 16° 9' 37" N, 90° 54' 05" W, 25–26-VI-2008, mature wet forest ex sifted leaf litter DB, DJC, IMDB, MGB, UC, 3 ♂; 8.8 km SE Salto de Agua, 50 m, 17° 30’ N, 92° 17’ W, 14-VII-2007, J.L. Cozar, ANTC # 4225, 1 ♂, 2 ♀ ( CNIN, ECOSUR); 8.8 km SE Salto de Agua, 50 m, 17°30’ N, 92° 17’ W, 14-VII-2007, M.G. Branstetter, # 647- 648, 1 ♀; 8 km SE Salto de Agua, 17° 30' 54" N, 92° 17' 43" W, 70 m, 14-VI-2008, wet forest YMRA, MDEM, DJC, JM, JLC, 1 ♀ ( CNIN).

Distribution. Mexico, Chiapas.

Etymology. This species is dedicated to John Longino from ECOSUR, Chiapas, who lent us part of the specimens used in this paper.

Figures

FIGURES 2 A – D. Dorsal view of adults. a. A. denticulatus new species, b. A. laevifemoralis new species, c. A. longinoi new species, d. A. lorenae new species (scale = 1 mm).

FIGURES 4 A – M. Lateral view of head and prothorax, showing prosternal carina. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant.

FIGURES 5 A – M. External scent efferent system. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant.

FIGURES 6 A – O. Male fore leg, anterior view. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant, n. A. sinuosus, o. A. basidentatus.

FIGURES 7 A – Q. Male hind leg, posterior view. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant, n. A. sinuosus, o. A. brunneus, p. A. ficus, q. A. pusillus.

FIGURES 8 A – N. Lateral view of parameres. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis new species, e. A. denticulatus new species, f. A. laevifemoralis new species, g. A. longinoi new species, h. A. lorenae new species, i. A. marcelae new species, j. A. puncticarinatus new species, k. A. santiagensis new species, l. A. septemclavatus new species, m. A. stali Distant, n. A. forreri.