Amnestus laevifemoralis 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 : 412-413

Amnestus laevifemoralis Mayorga and Cervantes n. sp.

( Figs. 2b , 4f , 5f , 6f , 7f , 8f , 9c )

Diagnosis. Lacking bifid spine on the ventral margin of fore femora, simple spine present on ventral margin, near apex of hind femora in males ( Fig. 6f ); lateral margins of pronotum explanate ( Fig. 2b ).

Description. Posterior half of head, prosternal carina, pronotum, peritreme, scutellum, a macula on middle region of corium, and abdomen dark brown; antennal segments III–V and legs pale brown; antennal segments I–II, and rostral segments pale yellow.

Head. Anterior half without punctures; tylus with four pegs and slightly longer than juga; juga with five marginal pegs; second antennal segment very short; rostrum reaching anterior margin of metasternum. Thorax. Pronotum with anterior margin concave with anterior and posterior lobes densely punctate including callus and lateral margins; posterior margin rounded. Propleura shiny and smooth; prosternal carina high with a deep mesial depression on ventral margin ( Fig. 4f ). Evaporatorium reaching anterior and lateral margins of mesopleura. Evaporatorium reaching middle area of metapleura, with peritreme elongated and curved, posterior margin of metapleura serrated, with rugae and setigerous punctures on margin ( Fig. 5f ) Legs. Fore tibiae with six robust spines on dorsal margin; ventral margin of fore femora with a series of fine setigerous punctures, lacking bifid spine ( Fig. 6f ); hind femora with simple, very small spine near apex on ventral margin ( Fig. 7f ) Scutellum. Triangular with scattered punctures on disc. Hemelytra. With uniformly distributed punctures and with lateral margin serrated basally; clavus with three rows of punctures, apical margin of corium entire; membrane hyaline surpassing apex of abdomen. Abdomen. Shiny, ventrally convex with fine hairs on all surfaces.

Male Genitalia. Parameres rounded with an elongated process apically and a series of setigerous punctures mesially ( Fig. 8f ).

Female Genitalia. Spermatheca with receptacle spherical, with a small asymmetrically developed flange around its basal part, as in figure 9c.

Male measurements (n=10). Body length 4.3± 0.4; head length 0.55± 0.05; width across eyes 0.86 ± 0.06; interocular distance 0.5; interocellar distance 0.25 ± 0.04; antennal segments: I 0.24 ± 0.04, II 0.1, III 0.45 ± 0.05, IV 0.4, V 0.5; rostral segments: I 0.34 ± 0.04, II 0.41 ± 0.06, III 0.49 ± 0.04, IV 0.34 ± 0.04; pronotum length 1.3 ± 0.2; width across anterior margin 1.0; width across humeral angles 2.3 ± 0.2; scutellum: length 0.96 ± 0.04, width 1.1 ± 0.04; length of fore femora 0.82 ± 0.07, fore tibiae 0.96 ± 0.04; fore tarsi I 0.05, II 0.1, III 0.15; length of hind femora 1.2 ± 0.1; hind tibiae 1.4 ± 0.2; hind tarsi I 0.1, II 0.05, III 0.15.

Female measurements (n=10). Body length 4.5 ± 0.2; head length 0.54 ± 0.04; width across eyes 0.85 ± 0.05; interocular distance 0.5; interocellar distance 0.25; antennal segments: I 0.25, II 0.1, III 0.45, IV 0.4, V 0.5; rostral segments: I 0.35, II 0.45 ± 0.05; III 0.5; IV 0.35; pronotum length 1.3; width across anterior margin 1.0; width across humeral angles 2.3 ± 0.01; scutellum: length 1.0 ± 0.04, width 1.2 ± 0.02; length of fore femora 0.84 ± 0.04; fore tibiae 0.97 ± 0.03; fore tarsi: I 0.1, II 0.05, III 0.15; length of hind femora 1.2; hind tibiae 1.4 ± 0.1; hind tarsi: I 0.1, II 0.05, III 0.15.

Holotype. Male. Mexico: Chiapas 2 km SE Custepec, 1520 m, 17-V-2008, 15° 43' 14" N, 92° 57' 02" W, LLAMA Wa-A-02-1-all mesophil forest ex sifted leaf ( CNIN). Paratypes. 2 km SE Custepec, 1520 m, 17-V-2008, 15° 43' 14" N, 92° 57' 02" W, LLAMA Wa-A-02-1-all mesophil forest ex sifted leaf litter, col. JLC, EORD, JM, 32 ♂, 13 ♀ ( CNIN; ECOSUR; IEXA). Villa Corzo, Ejido Sierra Morena, R. Biosfera la Sepultura, 16° 09' 40" N, 93° 36' 0" W, 15-V-2008, R. Anderson, 1367 m, Liquidambar Forest litter, 2008-008, 15 ♂, 19 ♀ ( NMNH, FSCA).

Distribution. Mexico, Chiapas.

Etymology. From the Latin laevi = smooth, referring to the lack of a bifid spine on the ventral margin of fore femora.

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.

FIGURES 9 A – D. Spermatheca. a. A. pusio b. A. obscurus, c. A. laevifemoralis, d. A. puncticarinatus