Amnestus santiagensis 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 : 425-426

Amnestus santiagensis Mayorga and Cervantes n. sp.

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

Diagnosis. Juga with five robust pegs; posterior half of head with scattered punctures; pronotum with anterior margin concave with series of deep setigerous punctures; prosternal carina low ( Fig. 4k ); hind tibiae with distal half flattened; posterior half of pronotum and scutellum dark brown.

Description. Head, antennal segments I–V, anterior half of pronotum, prosternal carina, abdominal venter, clavus, and coria pale brown. Rostral segments and legs pale yellow.

Head. Anterior half without punctures; tylus with four robust spines on apex and longer than juga; antennal segment II very short; rostrum reaching anterior half of metasternum. Thorax. Pronotum with anterior margin concave, anterior half convex with scattered small punctures; anterior half of anterolateral margins slightly carinate; posterior margin broad and convex; laterally straight; propleura shiny and smooth; prosternal carina low and sinuate ( Fig. 4k ). Mesopleura flat, evaporatorium reaching anterior and lateral margins, with an elevated and dull area in the middle of posterior half. Metapleura flat, evaporatorium extending to posterior and lateral margins; peritreme shiny and elongated; posterior margin of evaporatorium slightly toothed ( Fig. 5k ). Legs. Fore tibiae with five spines on dorsal margin, fore femora with a bifid middle spine on ventral margin; hind femora with a simple spine near apex on ventral margin ( Fig. 6k ); hind tibiae with basal half flat with a spine on base of ventral margin ( Fig. 7k ). Scutellum triangular with scattered punctures on disc. Hemelytra. Corium with uniformly distributed punctures; clavus with three rows of punctures; membrane hyaline strongly surpassing apex of abdomen. Abdomen shiny, ventrally convex, covered with fine hairs.

Male genitalia. Parameres swollen, acute apically, with setigerous punctures on middle apical area of the ventral margin ( Fig. 8k ).

Male measurements (n=7). Body length 3.2 ± 0.1; head length 0.46 ± 0.04; width across eyes 0.62 ± 0.03; interocular distance 0.36 ± 0.04; interocellar distance 0.21 ± 0.04; antennal segments: I 0.15, II 0.05, III 0.28 ± 0.03, IV 0.24 ± 0.01, V 0.32 ± 0.03; rostral segments: I 0.25, II 0.28 ± 0.03, III 0.34 ± 0.04, IV 0.24 ± 0.04; pronotum length 1.02 ± 0.08; width across anterior margin 0.69 ± 0.06; width across humeral angles 1.45 ± 0.1; scutellum: length 0.72 ± 0.06; width 0.76 ± 0.04; length of fore femora 0.48 ± 0.02; fore tibiae 0.59 ± 0.05; fore tarsi: I 0.1, II 0.05, III 0.15; length of hind femora 0.74 ±.04; hind tibiae 0.83 ± 0.03; hind tarsi: I 0.1, II 0.05, III 0.15.

Female measurements (n=1). Body length 3.3; head length 0.45; width across eyes 0.65; interocular distance 0.4; interocellar distance 0.2; antennal segments: I 0.15, II 0.05, III 0.3, IV 0.25, V 0.3; rostral segments: I 0.25, II 0.3, III 0.35, IV 0.25; pronotum length 1.0; width across anterior margin 0.7; width across humeral angles 1.5; scutellum: length 0.7; width 0.8; length of fore femora 0.5; fore tibiae 0.6; fore tarsi: I 0.1, II 0.05, III 0.15; length of hind femora 0.8; hind tibiae 0.9; hind tarsi: I 0.1, II 0.05, III 0.15.

Holotype. Male. Mexico: Chiapas, Santiago El Pinar, 24-VI-2006: I. A.Uribe, Pit fall, Parcela 10, Trampa 17 ( CNIN). Paratypes. Amatenango del Valle, 05-V-2006; S. S. Sanchez, Pit fall, Parcela 3, 1 ♂; Santiago El Pinar, 20-VI-2006, Parcela 2, Trampa Amarilla 9, 1 ♂; Santiago El Pinar, 21-VI-2006, S. S. Sanchez, Pit fall, Parcela 2, Trampa 8, 1 ♂; Santiago El Pinar, 21-VI-2006, D. N. Velasquez, Parcela 5, Trampa Amarilla 6, 1 ♂; Santiago El Pinar, 21-VI-2006, S. S. Sánchez, Necrotrampa, Parcela 4, Trampa 1, 1 ♂; Santiago El Pinar, 22-VI-2006, M. B. Briceño, Parcela 6, Trampa Amarilla 3, 1 ♂; Santiago El Pinar, 22-VI-2006, S. S. Sanchez, Parcela 6, Trampa Amarilla 10, 1 ♀ ( CNIN, ECOSUR, IEXA).

Distribution. Mexico: Chiapas.

Etymology. Amnestus santiagensis refers to the type locality, Santiago El Pinar.

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.