7 p. : ill. ; 24 cm.Includes bibliographical references (p. 7)

Kormilev, Nicholas A.

Maller, Anton.

Pallister, John.

American Museum of Natural History Scientific Publications

Iliiieiian%MllseiImIoxivtatesPUBLISHED BY THE AMERICAN MUSEUM OF NATURAL HISTORYCENTRAL PARK WEST AT 79TH STREET, NEW YORK 24, N.Y.NUMBER i86o DECEMBER 6, 1957Notes on Neotropical Aradidae (Hemiptera), 7Two New Apterous AradidaeBY NICOLAS A. KORMILEVI wish to express my gratitude to Dr. Herbert Ruckes, through whosekind office I have examined the Aradidae in the collections of theAmerican Museum of Natural History. Among these Aradidae arerepresented two apterous species, both of which are new. The firstspecies, from Brazil, belongs to the genus Notoplocoris Usinger, 1941,and the second, from Peru, belongs to a new genus, allied to the genusNotoplocoris Usinger and named Eunotoplocoris, new genus. It isworth mentioning that, until now, the majority of the apterous specieshave come either from islands or from continental areas situated notfar from the coast. This is the first case of an apterous species' beingfound in the Upper Amazons Valley.NOTOPLOCORIS USINGERNotoplocoris triangulatus, new speciesFigures 1, 2MALE: Elongately subtriangular, rather flat, gradually wideningbackward; the body is covered with short, curled, yellowish hairs; thehead laterally, antennae, and legs with longer, erect, yellowish hairs.Head is longer than wide across the eyes (male 40/32, female 48/35),subpentagonal, from the tips of the antenniferous spines narrowingbackward; anterior process is stout, long, narrowing forward, its tip isfeebly notched; juga are much longer than the clypeus, anteriorly con-tiguous; antenniferous spines stout, dentiform, divaricate, reaching tothe basal one-fifth of the first antennal segment; eyes small, semiglo-bose, protruding subpedunculate; postocular tubercles small, not2 AMERICAN MUSEUM NOVITATES NO. 1860projecting beyond the outer margin of the eyes; postocular borderslong and strongly convergent backward; infraocular carinae not de-veloped; vertex slightly inflated and with an obliterated, setigerousgranulation; laterally of it are situated two (1+1) ovate, callous spots.Antennae with the first joint stout, clavate, the following ones muchmore slender; the proportions of the antennal joints (1-4) are: male23/15/23/13, female 30/18/30 (the fourth is lacking). Rostrum doesnot reach the hind border of the rostral groove; the latter is wide anddeep, posteriorly closed.Pronotum shorter than wide (male 23/50, female 28/52); collumfeebly marked, anteriorly concave, granulated; anterior angles directedforward, anteriorly rounded, not projecting beyond the fore border ofthe collum; lateral borders convex, slightly expanded and raised, crenu-lated; posterior border in the middle angularly protruding backward,laterally slightly emarginate. The disk is rather flat, with a deepmedian furrow and four (2+2) longitudinal ridges, the inner oneslarger.Mesonotum shorter than wide (male 22/55, female 25/62), alsorather flat, in the middle posteriorly protruding backward and cuttingthe metanotum into two independent lobes; the median ridge is lowand provided with a fine longitudinal sulcus; along the lateral bordersrun short longitudinal carinae; the lateral borders are angularly pro-truding and slightly raised.Metanotum in the form of two (1+1) inflated plates, which aredeeply depressed interiorly; the outer borders are angularly protrudingand slightly raised.Abdomen longer than wide in the male (90/80), but shorter thanwide in the female (95/105), rather flat, only the middle of tergum VII(male) and pygophore are inflated; the lateral borders of the abdomenare slightly convex from segments II to V; the postero-exterior anglesof the connexiva III to V slightly protruding, those of segment VIform large rounded lobes; the exterior borders of connexivum VII areslightly emarginate anteriorly and protruding as subtriangular, apicallyrounded lobes posteriorly; these lobes are distinctly smaller than thoseof segment VI. Dorsum with usual pattern of larger and smallerround spots; the median ridge is slightly elevated, narrow and parallelon terga I and II, flattened and dilated on tergum III, narrow and ele-vated in the form of a tubercle on tergum IV, narrowed backward onterga V and VI, lacking on tergum VII. The central dorsal plate iscomposed of terga II to VI and is rather indistinctly separated fromthe connexivum in the male. The lobes of segment VIII are dentiform,1957 KORMILEV: ARADIDAE 3apically blunt, divaricate, scarcely projecting beyond the tip of thelobes of connexivum VII and reaching to the middle of the pygophore;the latter is cordiform. Spiracles ventral and placed far from the lat-eral border on sterna II to VII, lateral and visible from above on thelobes of sternum VIII. The scent gland openings are large, placed inthe postero-exterior angles of the mesopleura, and slightly visible fromabove. The legs are unarmed, aroliae lacking.FIGS. 1, 2. Notoplocoris triangulatus, new species, tip of abdomen fromabove. 1. Male. 2. Female.Female is larger and much wider posteriorly, its abdomen is moreconvex laterally, with the maximal width across segment IV (across VIin the male). The postero-exterior angles of connexiva III to V aremore protruding, but the lobes of connexivum VI are smaller; thelobes of VIII are dentiform, exteriorly parallel, reaching to two-thirdsof IX; the last is deeply notched posteriorly, the genital valves beingmuch longer than the oviduct (fig. 2).4 AMERICAN MUSEUM NOVITATES NO. 1860TYPE MATERIAL: Holotype, male, 9.1 mm. long, 2.6 mm. wide acrosspronotum, 4.2 mm. wide across abdomen; Rio Vermelho, Santa Cata-rina, Brazil, January 9, 1946, A. Maller collector; in the AmericanMuseum of Natural History. Allotype, female, 10.8 mm. long, 2.7 mm.wide across pronotum, 5.5 mm. wide across abdomen; Rio Vermelho,Santa Catarina, Brazil, January 9, 1946, A. Maller collector; in theAmerican Museum of Natural History. Paratypes: One male, one fe-male, same data as above; one female in the Kormilev collection. Thenew species is allied to Notoplocoris mendesi Wygodzinsky, 1948, butdiffers from it in being of larger size; in the fact that the body, par-ticularly that of the female, is wider posteriorly; and in the fact thatthe lobes of connexivum VI are larger than those of connexivum VIIand rounded, whereas the latter are subtriangular.EUNOTOPLOCORIS, NEW GENUSClosely allied to Notoplocoris Usinger, 1941, but differs from it byhaving a much wider head, which is almost as long as wide across theeyes; the postocular part is much shorter, only two-thirds of the lengthof the preocular; pronotum subrectangular, with parallel lateral bor-ders, the disk provided with two (1+ 1) lateral, high, rounded tubercles,and between them with two (1+1) ovate, flattened ridges; the medianridge of the body is interrupted on terguni II; tergum VII (female)provided with two (1+1) lateral rounded tubercles; abdomen abruptlydilated at the base, then subparallel, with slightly convex undulatedborders, posteriorly margin abruptly convergent, almost truncated; seg-ment VII terminates laterally with two (1+1) blunt, subangular,slightly divaricate processes; the scent gland openings longer than inNotoplocoris; spiracles of segments II to VI are ventral, placed far fromthe lateral margin, those of segment VII are also ventral, but placednearer the border, though not visible from above; those of the lobes(segment VIII) dorsolateral and visible from above. Legs are unarmed,aroliae lacking. Other characters as in Notoplocoris Usinger.GENOTYPE: Eunotoplocoris ruckesi, new species.Eunotoplocoris ruckesi, new species,Figures 3, 4FEMALE: The body subrectangular, rather flat; pronotum much nar-rower than abdomen, and subrectangular; the body covered withshort, curly, yellowish hairs, the antennae and legs with longer, erectbristles.Head almost as long as wide across the eyes (53/54); anterior1957 KORMILEV: ARADIDAE 53FIGS. 3, 4. Eunotoplocoris ruckesi, new genus, new species, female. 3. Headand pronotum. 4. Tip of abdomen from below.strong, laterally parallel, anteriorly deeply notched (clypeus muchshorter than the juga) reaching to the middle of the first antennal joint;antenniferous spines stout, dentiform, divaricate, reaching to the basalthird of the first antennal segment; eyes small, globose, very protrud-ing, but not pedunculate; postocular tubercles dentiform, small, notreaching the outer border of the eyes by considerable distance; post-6 AMERICAN MUSEUM NOVITATES NO. 1860ocular borders behind them convergent; posterior border rounded;infraocular carinae feebly developed, granulated, vertex elevated andgranulated. Antennae with a stout, clavate first joint; other jointsslender; the proportions of the antennal joints (1-4) are 31/19/29/-(the last joint is lacking). Rostrum short, not reaching the hind borderof the rostral groove; the latter deep and posteriorly closed (fig. 3).Pronotum transverse, subrectangular, shorter than wide (26/68);collum scarcely noticeable, granulated; anterior angles protruding for-ward as subtriangular, apically rounded lobes, projecting far beyondthe fore border of the collum; the lateral borders subparallel, anteriorlyconvergent, and granulated; posterior border almost straight, in themiddle feebly emarginate; disk roughly granulated and deeply punc-tured, with two (1+1) high, rounded, granulated tubercles laterally;between the latter with two (1+1) flattened, granulated ridges, andwith a short median depression, which does not reach the collum.Mesonotum subtriangular, shorter than wide (35/80), produced as amedian ridge posteriorly, and depressed along the lateral borders; theposterolateral borders are roundly emarginate; the disk is roughlygranulated.Metanotum divided into two (1+1) large lateral plates; their ex-terior borders contiguous with connexivum II.Abdomen subrectangular, shorter than wide across segment IV (125/138), roughly granulated; the central dorsal plate deeply punctured;the lateral borders of the abdomen feebly convex and undulated; thepostero-exterior angles of the connexiva slightly protruding; those ofconnexivum VI more protruding, rounded; those of VII exteriorlystraight, then produced as subtriangular, apically rounded lobes, whichare somewhat divergent. The disk with usual pattern of larger andsmaller rounded spots. Tergum I transversely elevated; tergum II flat;terga III to VI form the central dorsal plate, which is well separatedfrom the connexivum and terga II and VII, respectively; the medianridge low and relatively narrow; tergum VII (female) provided withtwo (1+1) round tubercles; the lobes of connexivum VII and the lobesof segment VIII and segment IX reach to the same line posteriorly. Thelobes of segment VIII are subtriangular, apically rounded, and with adorsolateral spiracle; the tip of segment IX rounded, the genital lobesbeing as long as the oviduct (fig. 4).TYPE MATERIAL: Holotype, female, 11.6 mm. long, 3.6 mm. wideacross pronotum, 7.3 mm. wide across abdomen; Tingo Maria, Huan-uco, Peru, 2200 feet, May 26, 1947, J. C. Pallister collector; in theAmerican Museum of Natural History.1957 KORMILEV: ARADIDAE 7It is a pleasure to dedicate this species to Dr. Herbert Ruckes.REFERENCESUSINGER, ROBERT L.1941. Three new genera of apterous Aradidae (Hemiptera). Pan-PacificEnt., vol. 17, pp. 169-181.WYGODZINSKY, PETER1948. Studies on some apterous Aradidae from Brazil (Hemiptera). Bol.Mus. Nac., Rio de Janeiro, Zool., vol. 86, pp. 1-23.

Two new apterous Aradidae

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