Otostigmus (Dactylotergitius) cavalcantii Bücherl, 1939

Chagas-Júnior, Amazonas, Knysak, Irene & Guizze, Samuel P. G., 2007, Revalidation of the subgenus Dactylotergitius Verhoeff, and redescription of Otostigmus (D.) caudatus Brölemann and Otostigmus (D.) cavalcantii Bücherl (Scolopendromorpha: Scolopendridae: Otostigminae), Zootaxa 1639, pp. 57-67 : 62-64

Otostigmus (Dactylotergitius) cavalcantii Bücherl, 1939

Figs. 12–22

Otostigmus (Coxopleurotostigmus) cavalcantii Bücherl, 1939a: 54 –57; 1939b: 259; 1941: 306.

Otostigmus (Parotostigmus) cavalcantii Bücherl, 1974: 111 , 112.

Otostigmus (Coxopleurotostigmus) cavalcantii perdicensis Bücherl, 1943: 85 –89. New Synonymy.

Otostigmus (Parotostigmus) perdicensis Bücherl, 1974: 112 .

Otostigmus (Parotostigmus) caudatus insularis Bücherl, 1949: 4 nec Otostigma carinatum var. insulare Haase, 1887 , replaced by Otostigmus (Parotostigmus) caudatus hogei Bücherl, 1974: 111 . New Synonymy.

Otostigmus (Coxopleurotostigmus) cavalcantii iberaensis Coscarón, 1955: 398 –399. New Synonymy.

Otostigmus (Parotostigmus) kretzii Bücherl, 1939a: 58 –60; 1939b: 272; 1941: 312; 1974: 113. New Synonymy.

Otostigmus (Parotostigmus) sternosulcatus Bücherl, 1946: 3 –4; 1974: 117. New Synonymy.

Type specimens: syntypes ( IBSP 48, 46, 90, 97, 69) the first three from Canoinhas [Lagôa], Santa Catarina, the remaining ones from Bandeirantes and São Carlos, São Paulo respectively. O. cavalcantii perdicensis : holotype ( IBSP 303) from Pinheiro Preto [Perdizes], Santa Catarina. O. cavalcantii iberaensis : holotype male ( MLP 174) from Reserva Natural del Iberá, Corrientes, Argentina. O. kretzii : holotype female ( IBSP 38) from Igarapava, São Paulo. O. sternosulcatus holotype ( MNHCI 16) from Teixeira de Freitas [Rio d`Areia] and paratype ( MNHCI 22) from Contenda, both in the state of Paraná. O. caudatus hogei : holotype ( IBSP 50) and 2 males paratypes ( IBSP 77) (see remarks Chagas-Jr, 2001: 264) from Ilha da Queimada Grande.

Additional material examined: Brazil: Bahia: Canavieiras ( IBSP 805) 1 ex., C. Goffergé, 04-X-1945; Mato Grosso: Terenos ( IBSP 536), 1 ex., P. Scheich, 17-IX-1947; Mato Grosso do Sul: Usina Hidrelétrica Sergio Motta, Fazenda Cisalpina,Brasilândia ( IBSP 1383, 1458), 3 ex., M. Sciaretta, 17-VII-2000; Minas Gerais: Uberlândia ( MNRJ 15251), 3 ex., Leonardo; Rio de Janeiro: Rio de Janeiro, Represa Jacarepaguá, ( MNRJ 15125), 1 ex., Berla, 3-II-1944, (15256), 1 ex., H. N. Cunha, 18-VII-1964, Cachoeira de Macacu ( MNRJ 15257), 1 ex., Giupponi, A & González, A., 8-12-XII-2001; São Paulo: Ribeirão Grande ( MNRJ 15233, 15249, 15250), 12 ex., R. Bérnils, F. Straube & E. Conde, 23-30-IV-2002, Ilha da Queimada Grande ( IBSP 152, 994, 999), 10 ex., Equipe Instituto Butantan, 04-VIII-1969; Vicente Carvalho ( IBSP 247), 1 ex., A. Aguiar, 6-VIII-1942; Atibaia ( IBSP 901), 1 ex., P. Villela, VI-1960; Presidente Epitácio ( IBSP 1394, 1395, 1396, 1400, 1401, 1404, 1405, 1406, 1407, 1408, 1419, 1454, 1455, 1468, 1494, 1496), 16 ex., J. P. Guadanucci & R. Bertani, 20-25-III-2001; São Paulo ( IBSP 459), 1 ex., B. Ribeiro, 26-XI-1941; Barueri ( IBSP 1417), 1 ex., J. da Costa, 2-VI-2000; Rosana (Porto Primavera) ( IBSP 1432, 1434, 1435, 1440, 1444, 1445, 1446, 1447, 1493, 1495), 10 ex., Equipe Instituto Butantan, 1999-2000; Panorama ( IBSP 1476), 1 ex., Equipe Instituto Butantan, 1999; Botucatu ( MNRJ 15252), 4 ex., 2003; Paraná: Curitiba, ( MNRJ 15076), 1 ex., R. Bérnils, 13-III-2001, ( MNRJ 15176), 1 ex., A. Chagas, 14-I-2001, Araucária, Cidade Industrial, ( MNRJ 15067), 3 ex., R. Bérnils, 11-II-2001, Irati, ( MNRJ 15254), 1ex., D. Carmo, 07-VII-2004, Cornélio Procópio, ( MNRJ 15253), 1 ex, Denise, B., XII-1997, Paranavaí, ( MNRJ 15255), 1 ex., Angel, W., 09-III- 2003, Foz do Jordão ( MNHCI); 15 ex., A. Chagas, V-1995; Santa Catarina: Santa Cecília ( MNRJ 15066), 1 ex., Pinto-da-Rocha, R., Kury, A. & Giupponi, A., 11-III-1999.

Diagnosis: Body color commonly purple, dark blue or blue (living specimens). Cephalic plate, tergites and sternites smooth. Antennae with 18 antennomeres, first two glabrous, the remaining antennomeres with short yellow setae; complete paramedian sutures from 7th to 20th tergites; sternites with two short anterior sulci from 3rd (4th) to 19th, posterior border of the last sternite straight, lightly concave or concave. Male with digitiform appendix on the last tergite and with a pointed coxopleural process (appendix).

Redescription: Body length reaching 36–40 mm in males and 42–45 mm in females. Body color commonly metallic purple, dark blue or blue, legs and antennae light blue; setae of the antennae yellow. Cephalic plate smooth, without margins, sutures and depressions, but with fine punctuations; caudal margin overlain by the first tergite ( Fig. 14 ). Antennae with 18 antennomeres; first two antennomeres glabrous, third glabrous dorsally, but pubescent ventrally; the remaining antennomeres are covered with short yellow setae. Forcipular coxosternum smooth, with fine punctuations and a sulcus, 4+4, 4+5 or 5+5 dental plates and a bristle on the middle of each plate, trochanteroprefemoral process of the coxosternum with three teeth ( Fig. 15 ). Tergites smooth, with few punctuations and shallow complete paramedian sulci from 7th to the 20th tergite, sometimes from 5th to 20th tergite; with short sulci on the anterior margin of the 3rd and 4th tergites; lateral carina present on the last tergite (21st). The posterior margin of the ultimate tergite in males presents a digitiform prolongation (“appendix”), which is longer than the tergite ( Fig. 17 ). The apex is round, laterally flattened forming a concavity on each side with a series of yellowish setae ( Figs. 13 , 18 ). Sternites smooth, with sparse punctuation, but without depression; with two anterior sulci from 3rd (4th) to 19th ( Fig. 19 ); ultimate sternite with the posterior margin concave, slightly concave or straight and with a longitudinal depression. Coxopleuron with numerous irregular pores, and a pointed coxopleural process (appendix) ( Figs. 12 , 16, 18 ). Legs: first leg with a spur on the femur, two tarsal spurs on the legs 1st to 7th (or 11th); one tarsal spur from the 8th (or 12th) to 19th; 20th and 21st without spur. Ultimate legs long, without spines on the prefemoral.

Redescription of female: Same characters as the male, except for tergite 21 and the coxopleura. The posterior margin of the ultimate tergite is angulate, but not extended as in the male ( Fig. 21 ). The posterior portion of the coxopleuron presents a little rounded prominent lobe, but without a sclerotized point ( Figs. 20, 22 ).

Remarks: The main difference between O. caudatus and O. cavalcantii is in the posterior border of the coxopleuron. In males of O. caudatus the posterior border has a short rounded prominent lobe, in males of O. cavalcantii there is a pointed sclerotized coxopleural process (appendix). In females, the coxopleuron of O. caudatus is truncate, in O. cavalcantii it has a short round prominent lobe. In females, the posterior border of the ultimate tergite is strongly protracted or acute. This shape of the ultimate tergite in females of O. caudatus and O. cavalcantii is very characteristic, but similar tergites can be found in females of several species of Neotropical Parotostigmus.

Figures

FIGURES 10 – 13. Otostigmus caudatus: male (MNRJ 15180) from Salvador, 10 segment 21 st, lateral, 11 apex of the digitiform prolongation. Figs. 12 - 13. Otostigmus cavalcantii: male (MNRJ 15066) from Santa Cecília. 12 segment 21 st, lateral, 13 apex of the digitiform appendix. Scale bars Figs. 10 - 11, 100 µm. Figs. 12 - 13, 100 µm. Ca, coxopleural appendix.

FIGURES 14 – 22. Otostigmus cavalcantii: Figs. 14 - 19 males (MNRJ 15066) from Santa Cecília, Figs. 20 - 22 females (MNRJ 15233) from Ribeirão Preto. 14 cephalic plate, 15 forcipular coxosternum, 16 segment 21 st, ventral, 17 the same, dorsal, 18 the same, lateral, 19 sternites 14 th and 15 th, 20 segment 21 st, ventral, 21 the same, dorsal, 22, the same, lateral. Scale bars: Figs. 14 - 22, 1 mm.