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(Diptera, Stratiomyidae) from Rio De Janeiro, Brazil

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(Diptera, Stratiomyidae) from Rio De Janeiro, Brazil ARTICLE A new species of the genus Chiromyza Wiedemann (Diptera, Stratiomyidae) from Rio de Janeiro, Brazil José Roberto Pujol-Luz¹ ¹ Universidade de Brasília (UNB), Instituto de Ciências Biológicas (ICB), Departamento de Zoologia. Brasília, DF, Brasil. ORCID: http://orcid.org/0000-0002-8621-4856. E-mail: [email protected] Abstract. Seven species of the genus Chiromyza Wiedemann are recorded in Brazil: C. brevicornis (Lindner, 1949), C. enderleini (Lindner, 1949), C. leptiformis (Macquart, 1838), C. ochracea Wiedemann, 1820, C. stylicornis (Enderlein, 1921), C. viridis Bezzi, 1922 and C. vittata Wiedemann, 1820. Herein I describe a new species, Chiromyza raccai sp. nov., based on 88 specimens (41 males, 47 females) from the Atlantic Rain Forest mountains of State of Rio de Janeiro, Brazil, in the city of Miguel Pereira. The new species is distinguished from the related species C. ochracea and C. vittata by the structure of male terminalia. Chiromyza raccai sp. nov. has the distal region of the phallus rounded with two conspicuous apical setae, C. ochracea has the distal surface of the phallus wide and flatness, and C. vittata has the distal surface of the phallus rounded with outer margin rugose. Key-Words. Atlantic Rain Forest mountains; Brown Soldier-fly; Coffee root fly; Chiromyzinae; Neotropics; Taxonomy. INTRODUCTION for the genus viz. Chiromyza vittata Wiedemann, 1820, C. ochracea Wiedemann, 1820, C. leptiformis The Chiromyzinae is a monophyletic group of (Macquart, 1838), C. prisca Walker, 1852 (= C. ma- soldier flies within Stratiomyidae (Woodley, 2001). truelis Enderlein, 1921), C. vicina Bigot, 1879 and, It is composed by 13 genera and 56 species that C. grandicornis (Hardy, 1920) (currently Inopus occur in the Neotropical and Australasian regions grandicornis). Finally, Bezzi (1922) in a revision of (Woodley, 2001; Lessard et al., 2020). One of these the South American Chiromyza described two species, Inopus rubriceps (Macquart, 1847), was in- other species for the genus: C. nigra Bezzi, 1922 troduced in the Nearctic region and, there are no and C. viridis Bezzi, 1922. records of this subfamily in the Afrotropical region More recently, two works expanded the knowl- (Woodley, 2001; Hauser et al., 2017, Lessard et al., edge of Chiromyzinae. Daniels (2016) proposed 2020). The brownish soldier flies are recognized the genus Metridius and described two species by the following set of characters: (i) reduction from Australia. The other work presented a generic of pieces in the mouthparts of adults; (ii) females revision for the Australian Chiromyzinae (Lessard with robust, elongate and strongly tapered abdo- et al., 2020). They also proposed new taxonom- men, presumably modified for oviposition in the ic limits for the genus Chiromyza (= Archimyza soil; (iii) well-developed mandibles in the larvae, Enderlein, 1921 and = Stenimas Enderlein, 1921) presumably to feed of roots, rhizomes and stems, and transferred five species of these genus from instead of the mandibular-maxillary complex as the Australian region to Chiromyza, viz: C. aus- in other soldier flies larvae, used to filter organic tralis (Macquart, 1850), C. ava (Enderlein, 1921), particles, or small organisms, from a moist rotting C. matruelis (Enderlein, 1921), C. stemmaticalis substrates; (iv) larval body with 12 segments – the (Enderlein, 1921) and C. vicina Bigot, 1879. species in the other groups have bodies with 11 Nowadays, the genus Chiromyza groups segments (see Woodley, 2001; Pujol-Luz & Vieira, 19 species: C. australis (Macquart, 1850), C. ava 2000; Lessard et al., 2020). (Enderlein, 1921), C. brevicornis (Lindner, 1949), After Wiedemann (1820) description of the ge- C. enderleini (Lindner, 1949), C. fulva Nagatomi & nus Chiromyza, Hardy (1920) and Bezzi (1922) pre- Yukawa, 1969, C. gressitti Nagatomi & Yukawa, sented the first taxonomic revision for Chiromyza. 1969, C. leptiformis (Macquart, 1838), C. matruelis In Hardy’s (1920) revision of the tribe Chiromyzini (Enderlein, 1921), C. nigra Bezzi, 1922, C. ochra- recognized 11 species of Chiromyza, however, cea Wiedemann, 1820, C. papuae Nagatomi & nowadays only five of these species are accepted Yukawa, 1969, C. sedlaceki Nagatomi & Yukawa, Pap. Avulsos Zool., 2020; v.60: e20206037 ISSN On-Line: 1807-0205 http://doi.org/10.11606/1807-0205/2020.60.37 ISSN Printed: 0031-1049 http://www.revistas.usp.br/paz ISNI: 0000-0004-0384-1825 http://www.scielo.br/paz Edited by: Carlos José Einicker Lamas http://zoobank.org/792AEB61-3F41-4595-8DE1-16FD2835DFFE Received: 14/05/2020 Accepted: 26/06/2020 Published: 16/07/2020 Pap. Avulsos Zool., 2020; v.60: e20206037 Pujol-Luz, J.R.: New species of the genus Chiromyza 2/8 1969, C. stemmanticalis (Enderlein, 1921), C. stylicornis radial branch; R₄ ₅ = third longitudinal vein; r-m = radi- (Enderlein, 1921), C. tenuicornis (Lindner, 1949), C. tris- al-medial cross vein; Sc = subcostal vein. trigata (Enderlein, 1921), C. vicina Bigot, 1879, C. viridis ₊ Bezzi, 1922 and C. vittata Wiedemann, 1820. Seven of Abbreviations used to male and female terminalia: them were recorded for Brazil: C. brevicornis, C. enderlei- apc s = apical setae; cap dct = capsular duct; cerc = cer- ni, C. leptiformis, C. ochracea, C. stylicornis, C. viridis and cus; ej apod = ejaculatory apodeme; epand = epandri- C. vittata. um; fla sur = flat surface; gen fk = genital fork; goncx = The Brazilian species Chiromyza were seldom investi- gonocoxite; goncx apod = gonocoxal apodeme; hypd = gated. The larvae of Chiromyza sp. were reported as a pest hypandrium; lat ovid = lateral oviduct; ph = phallus; pm of Coffea arabica Linnaeus, 1753 (D’Antônio, 1991; Lima & sh = parameral sheath; rur sur = rugose surface; spmth Racca Filho, 1996). Pujol-Luz (1999) breed larvae of this cap = spermathecal capsule; vl = valve. species in the laboratory and after the emergence, iden- tified the imagoes as C. vittata. Later, Pujol-Luz & Vieira Acronyms for collections: DZUB = Coleção (2000) described the larva of C. vittata, and based on the Entomológica do Departamento de Zoologia, natural history data they gathered, the authors stated Universidade de Brasília, Brazil; MNRJ = Museu Nacional that the adults do not cause any damage to the coffee da Universidade Federal do Rio de Janeiro, Brazil; plants. The mass of eggs is deposited in the crevices of MZUSP = Museu de Zoologia da Universidade de São the trunks, and after hatching the larvae moves towards Paulo, Brazil; NMW = Naturhistorisches Museum Wien, the ground, bury themselves and begin feeding on the Germany; UFRRJ = Universidade Federal Rural do Rio de plant’s roots. Herein I describe a new species, Chiromyza Janeiro. raccai sp. nov., based on 88 specimens (41 males, 47 fe- males) from Atlantic Rain Forest on the mountains of State of Rio de Janeiro, in the city of Miguel Pereira. RESULTS Chiromyza raccai, new species MATERIAL AND METHODS Diagnosis: Body brownish, thorax with four conspic- Material examined and photography: I examined 86 uous dark brown stripes; membrane of wings strongly specimens from the State of Rio de Janeiro, RJ, Brazil: 40 darkened around longitudinal and transversal veins; legs males and 46 females collected in the mountains of State mostly yellowish-brown, tibiae club-like, with base nar- of Rio de Janeiro in the City of Miguel Pereira (22°27 54 S, rowed and apex enlarged, tibiae patterned in females, ′ ″ 43°27 56 W) and, a couple in tandem from the City of with femora with basal dark brown and distal brown- ′ ″ ⅔ ⅓ Valença, also in the State of Rio de Janeiro (22°14 46 S, ish yellow, tibiae with basal brownish yellow and distal ′ ″ ⅓ 43°42 11 W). Microphotographs of the specimens were dark brown; abdomen light brown; hypandrium with ′ ″ ⅔ produced with a Leica DFC295 camera attached to a Leica posterior margin triangular and apex extending beyond M205-C stereomicroscope and a Leica DM200 light mi- base of gonostylus insertion, phallus tubular with distal croscopy. The measurements (mm; µm) of the specimens extremity rounded with two conspicuous apical setae; were made using Leica software LAS-V3.8. The holotype female genitalia with genital fork rectangular, fork arms and paratypes are housed in the Coleção Entomológica tapering, two lateral membranous oviducts, spermathe- do Departamento de Zoologia da Universidade de cae with three long glandular ducts, each one with valve Brasília, Brazil (DZUB). The terminology for describing the in the distal ⅓, ending in a semi-spherical and strongly structures of the external morphology of the flies follows sclerotized spermathecal capsule. Pujol-Luz & Oliveira (1999) and Cumming & Wood (2017). I also examined the photographs of the syntypes (NMW) Type material: The male Holotype male is housed in the of C. ochracea, two males, and C. vittata, three females. To Coleção Entomológica do Departamento de Zoologia da compared morphology of male genitalia, specimens pre- Universidade de Brasília (DZUB), Brasília-DF, Brazil, and la- viously identified as C. ochracea (MNRJ = 2; MZUSP = 1, beled: Miguel Pereira-RJ/ F. Racca Fº col./ 30.VII.1998 [white UFRRJ = 1) and C. vittata (MNRJ = 2; MZUSP = 1, UFRRJ = 1, label]; Holótipo [red label]; UnB-237877 [white label]. DZUB = 2) was dissected. Complementary material: Paratypes (males), labeled: Miguel Pereira-RJ/ F. Racca Fº col./ VI.1996 [white label]; Abbreviations used to wing venation: A₁ = first branch Parátipo [green label]; 9 [UnB-237844-237852]; Miguel of anal vein; br = basal radial cell; C = costal vein; Cu = cu- Pereira-RJ/ 30.VII.1996, 600m/ F.
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