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Tobyschuhaptera amazonica gen. n, sp. n, from Brazil (Hemiptera: Heteroptera: Aradidae).

Abstract--From Amazonia, Brazil, a new genus of apterous Mezirinae, Tobysckuhaptera gen.n., containing the new species. T. amazonica sp.n. is described and illustrated and compared with other apterous Neotropical Mezirinae.

Key words: Heteroptera, Mezirinae, new genus, new species, Brazil.

INTRODUCTION

Twelve genera of apterous Mezirinae are recorded from the Neotropical Region: Allelocoris, Asterocoris Drake & Harris, 1940; Emydocoris, Notoplocoris Usinger, 1941; Eunotoplocoris Kormilev, 1957; Bergrothiessa, Kormilevia, Mystilocoris and Ormenocoris Usinger & Matsuda, 1959; Pseudopictinus Kormilev, 1966; Limonocoris Kormilev, 1971; and Neormenocoris Heiss, 1999. Their distribution range is very limited due to the apterous condition and it may be assumed that they are also endemic to region of origin.

Usinger & Matsuda 0959: 200) gave a key to the 10 known apterous American genera of Mezirinae. The character set of the new taxon represented by two females does not fit to any of these genera nor to those two described later (Kormilev, 1971; Heiss, 1999). Therefore a new genus, Tobyschuhaptera gen.n., is proposed for the species amazonica sp.n. from Brazil.

MATERIAL AND METHODS

The description is based on two females. As specimens of this apterous and pilose new species were mostly covered by detritus or incrustations, which were removed for study of abdominal structures. Photos of fig. 1 were taken with an Olympus SZX 10 binocular microscope and a Olympus E 3 digital camera, processed with Helicon Focus 4.3 software, using Adobe Photoshop and Lightroom 2.3.

Measurements were taken with an eyepiece micrometer (20 units = 1 mm).

Abbreviations used: deltg = dorsal external laterotergite; mtg = abdominal median tergite.

TAXONOMY

TOBYSCHUHAPTERA, NEW GENUS

Tobyschulmptera amazonica, new species

DIAGNOSIS: The striking antennal structure with segment I longest, beset with dense pubescence, is shared among the abovementioned apterous genera only by Allelocoris (1 sp. Brazil), Asterocoris (2 sp. Brazil), Ormenocoris (1 sp. Ecuador) and Neormenocoris (1 sp. Costa Rica). However, these genera are distinguished as follows: Allelocoris lacks the stylate eyes, the "genae" are long, nearly reaching apex of antennal segment I and anterolateral lobes of pronotum are expanded anteriorly. Asterocoris shares the stylate eyes but the "genae" are long and slender exceeding by far the apex of clypeus, the anterolateral lobes of pronotum also project anteriorly, and each dorsal external laterotergite (deltg) is provided with a posteriorly increasing prominent fingerlike projection. Ormenocoris it distinguished by the elongate head with anterolaterally inserted eyes and bifurcate lateral projections on pro- and mesonotum. Neormenocoris shares the head structure of Ormenocoris but only the pronotum shows anterolateral projections that are truncate. The genus Mystilocoris Usinger & Matsuda (1 sp.), described from Colombia, shares the stalked eyes of Tobyschuhaptera gen.n.; however, the head is much wider and the shape of body as well as the antennal structure are different, the latter of which has short stout segments I-IV.

DESCRIPTION: Small-sized apterous Mezirinae; body elongate oval, attenuated anteriorly, surface of body, legs and antennae projecting and elevated structures with dense erect pubescence, the setae stiff and curved at apex. Head: Triangular, eyes stalked, "genae" shorter than clypeus, antennae long and slender, segment I longest, II + III shorter, IV shortest; postocular lobes converging to constricted neck; rostrum shorter than head. Pronotum: Distinctly wider than long, lateral margins with a vertical projection, separated from mesonotum by a deep suture. Mesonotum: Strongly transverse with conical lateral projections, the median longitudinal elevation fused to that of metanotum and abdominal mediotergites (mtg) I + II; lateral sclerites oval and callous, suture delimiting the mesonotum posteriorly, distinct laterally of median ridge and indistinct on the latter. Metanotum: Fused to mtg I + II, forming a continuous plate, the median ridge laterally expanded on mtg I, anterolateral sclerites oval and callous, lateral parts of mtg I + II punctured and depressed. Abdomen: The median ridge of the thorax continues along the tergal plate of mtg III-VI, lateral sclerites with punctured oval depressions; deltg II + III not fused, anteriorly reaching to pronotum, lateral margins of deltg II-VII reflexed with posterolateral hairy tubercles; tergite VII elevated with 2 vertical projections. Venter: Prosternum separated from fused meso- and metasternum and sternites I + II by a suture, the latter medially with an oval depression; metapleural scent gland canals distinct and visible from above, abdominal spiracles II-IV ventral, V-VIII lateral and visible from above. Legs: Long and slender, claws with thin pulvilli.

ETYMOLOGY: It is a pleasure to dedicate this conspicuous new flat bug genus to Toby Schuh, recognizing his outstanding and excellent oeuvre on Heteroptera, his long-time friendship and generous advice in all heteropterological matters over the last 35 years--half of his life.

DISTRIBUTION: Brazil.

Tobyschuhaptera amazonica, new species Figure 1

HOLOTYPE: BRAZIL: Amazonia: Manaus env., Amazon Lodge, 30 VIII 2000, E. Heiss, [female].

DIAGNOSIS: The only species assigned to date to this genus is easily recognized by the shape and structure of body, the conspicuous pubescence, the long antennae, and stalked eyes.

DESCRIPT1ON: Holotype female. Apterous, body surface deeply punctured and as appendages and projecting tubercles and elevations beset with long stiff erect yellowish pilosity, colouration dark reddish brown. Head: Wider across eyes than long (26.5/23); "genae" much shorter than clypeus and adherent at its apex; antenniferous lobes short with apex acute; antennae 2.45x as long as width of head (65/26.5), segment I by far longest, cylindrical and slightly curved, segments II + III shorter, more slender, and straight, IV shortest and clavate; length of antennal segments I/II/III/IV = 29/13.5/15.5/7; eyes stalked and directed anterolaterally; postocular lobes sinuately converging to constricted neck; vertex with a carinate ridge laterally delimited by longitudinal grooves; rostrum arising from a slitlike atrium, shorter than head, lateral margins of rostral groove beset with a fringe of stiff setae. Pronotum: 3x as wide as long (30/10), lateral margins roundedly converging anteriorly bearing a pilose fingerlike vertical tubercles; anterior margin concave, collar ringlike, disk with a median carina and punctured oval callosities laterally. Mesonotum: About 3.5x as wide as long (35/10), 4x across lateral projections (40/ 10); lateral margins with a posterolaterally directed projection; median ridge fused to and continuing on metanotum, laterally with ovate callosities, posterior margin convex, separated from metanotum by a laterally distinct groove except on median ridge. Metanotum: Fused to mtg I + II into a continuous plate, reaching to the tergal plate; median ridge laterally expanded on mtg I, lateral sclerites of metanotom oval and callous, those of mtg I + II shallowly depressed and punctured. Abdomen: Tergal plate longer than wide, the longitudinal ridge of thorax continues along mtg III-VI; lateral sclerites with punctured oval depressions; deltg II + III not fused, lateral margins of deltg II-VII reflexed, their posterior margins raised, pilose and with a distinctly posterolaterally projecting tubercle; metapleural scent gland canais straight and directed upward and visible from above as a split oval elevation; mtg VII with a median elevation and 2 vertical projections on posterior margin; tergite VIII bilobate, visible tergites IX and X tricuspidate. Venter: Prosternum medially elevated, with a conical tubercle directed toward coxae; median part of fused meso- and metasternum and sternites I + II with smooth oval depressions, a conical tubercle on posterolateral margin of meso- and metasternum reaching meso- and metacoxae; sternites III-VII separated by deep transversal grooves; abdominal spiracles II-IV ventral, V-VII placed on laterally projecting tubercles and visible from above, spiracle VII terminal on paratergites VIII. Legs: Long and slender, femora slightly curved with distinct trochanters; tibiae straight, protibial comb present; tarsi two-segmented, claws with setiform pulvilli.

MEASUREMENTS: Holotype female: Length 5.8 mm; length of antennae 3.25 mm; width of abdomen across tergite IV 2.9 mm. Paratype female: Length 5.3 mm; length/width of head 22/ 25; pronotum 1/w 9/28; mesonotum 1/w 9/34; length of antennal segments I/II/III/IV = 27/12.5/15/6; antennae 2.42 x as long as width of head (60.5/25); width of abdomen across tergite IV 2.5 mm.

ETYMOLOGY: Named after the Amazonian province where this species was found.

PARATYPE: BRAZIL: Amazonia: N Santos, 23 II 1993, R. Schuster, [female].

The type specimens are deposited in the collection of the author at the Tiroler Landesmuseum.

ECOLOGY: The specimens were collected in an Amazonian rainforest in Brazil, the holotype of which was associated with fungi on a branch of a dead tree.

ACKNOWLEDGMENTS

I thank Christine A. Johnson (New York) and Thomas Henry (Washington D.C.) for inviting me to contribute to this Festschrift. I am also grateful to Reinhard Schuster (Graz) who generously donated the paratype specimen and Thomas Henry and Pavel Stys (Prague) for the critical reviews of the manuscript.

REFERENCES

Drake, C. J. and H. M. Harris. 1944. Two new genera and two new species of apterous aradids from Brasil (Hemiptera). Revista Brasileira de Biologia 4(3): 363-366.

Heiss, E. 1999. A revision of Neasterocoris Usinger & Matsuda, 1959, with description of a new genus and two new species (Heteroptera, Aradidae). Bulletin de la Societe Entomologique de France 104(3): 221-229.

Kormilev, N. A. 1966. Notes on Neotropical Aradidae XVI. (Hemiptera-Heteroptera). Studia Entomologica 9: 515-521.

Kormilev, N. A. 1971. Aradidae de la Hacienda el Limon, D. F. (Hemiptera-Heteroptera). Memorias de la Sociedad Ciencias Naturales "La Salle." Caracas 31: 165-174.

Usinger, R. L. 1941. Three new genera of apterous Aradidae (Hemiptera). Pan-Pacific Entomologist 17:169-181.

Usinger, R. L. and R. Matsuda. 1959. Classification of the Aradidae. British Museum, London, 410 pp.

ERNST HEISS

Tiroler Landesmuseum, 2a Josef Schraffl Strasse, A-6020 Innsbruck, Austria, e-mail: aradus@aon.at
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Author:Heiss, Ernst
Publication:Entomologica Americana
Article Type:Report
Geographic Code:3BRAZ
Date:Jan 1, 2012
Words:1573
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