Amnestus chiapensis 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 : 407-408

Amnestus chiapensis Mayorga and Cervantes n. sp.

( Figs. 1c , 4c , 5c , 6c , 7c , 8c )

Diagnosis. Anterior half of pronotum elevated, with a longitudinal series of punctures near frontal margin; prosternal carina elevated mesially ( Fig. 4c ); evaporatorium not reaching anterior margin of mesopleura ( Fig. 5c ).

Description. Head, antennal segments III–V, pronotum, prosternal carina, scutellum, hemelytra, peritreme, abdominal venter, femora of all legs and fore tibiae dark brown. Antennal segments I–II, rostrum, middle and hind tibiae pale brown.

Head. Anterior half with rugae; juga with five pegs; rostrum reaching base of metasternum. Thorax. Pronotum with transverse impression strongly marked by a series of deep punctures, anterior margin concave, anterolateral margins carinate from middle to anterior end ( Fig. 1c ), posterior margin rounded. Propleura shiny, prosternal carina elevated mesially. Mesopleura with evaporatorium flat and reaching lateral margin of pleura. Metapleura with evaporatorium extended to posterior margin of pleura and almost reaching lateral margin. Peritreme elongate, slightly curved, posterior margin with faint rugae ( Fig. 5c ). Legs. Fore tibiae with six robust spines on dorsal margin. Fore femora with a mesial, bifid spine on ventral margin ( Fig. 6c ). Hind femora with a simple spine near apex on ventral margin, and a small spine on apex of dorsal margin. Hind tibiae with basal half flat, with a small spine near base on ventral margin ( Fig. 7c ). Scutellum. Triangular with a row of punctures on lateral margins and uniformly distributed punctures on disc. Hemelytra. Clavus and corium with punctures longitudinally distributed; membrane hyaline, surpassing apex of abdomen. Abdomen shiny and covered with fine hairs.

Male genitalia. Paramere long, short apically, ventrally and mesially lobulate, with three setigerous punctures on dorsal margin and two on ventral margin ( Fig. 8c ).

Male measurements (n=1). Body length 3.7; head length 0.5; width across eyes 0.7; interocular distance 0.4; interocellar distance 0.2; antennal segments: I 0.15, II 0.05, III 0.3, IV 0.25, V 0.35; rostral segments: I 0.25, II 0.3, III 0.35, IV 0.2; pronotum length 1.1; width across anterior margin 0.75; width across humeral angles1.6; scutellum: length 0.8; width 0.9; length of fore femora 0.6; fore tibiae 0.9; fore tarsi: I 0.1, II 0.05, III 0.15; length of hind femora 0.85; hind tibiae 1.0; hind tarsi: I 0.1, II 0.05, III 0.15.

Holotype Male. Mexico: Chiapas, Amatenango del Valle, 3-V-2006, D.N. Velasquez, trampa amarilla, parcela 2. Paratypes: Amatenango del Valle, 11-VIII-2006. I. A. Uribe, parcela 1, trampa amarilla 6, 1 ♂; Santiago El Pinar 22-VI-2006. I. A. Uribe, pit fall, parcela 7, trampa 14, 1 ♂ ( CNIN, ECOSUR).

Distribution. Mexico: Chiapas.

Etymology. Referring to the State of Chiapas

Figures

FIGURES 1 A – D. Dorsal view of adults. a. A. bergrothi Distant, b. A. carinopilosus new species, c. A. chiapensis new species, d. A. cristobalensis 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.