Andiorrhinus (Turedrilus) barrosoi Hernandez-García & James, 2018

Hernández-García, Luis Manuel, Bartz, Marie Luise, Guerrero, Jesús Enrique Burgos-, Sousa, Sandriel Costa, Rousseau, Guillaume Xavier & James, Samuel Wooster, 2018, Additions to Andiorrhinus (Turedrilus) (Rhinodrilidae, Clitellata) from Eastern Amazonia, Zootaxa 4496 (1), pp. 481-491 : 487-489

Andiorrhinus (Turedrilus) barrosoi Hernandez-García & James , sp. n.

( Figure 2 G–K )

Holotype. MPEG.ANL 0 0 0 321 adult, complete. Agroforestry System. São João do Rosário settlement, Rosário, MA, Brazil, 0 2o 51'14.3''S, 44o09'11.4''W, 38 masl. 0 6 March 2014. Muñoz J.A. & Rousseau G.X. colls.

Paratypes. MPEG.ANL 0 0 0 322 one adult, complete. Six years-old fallow, Espera Village, Alcântara, MA, Brazil, 2o22'13.0''S, 44o26'40.3''W, 38 masl. 19 May 2015. Hernandez-Garcia, L.M. & Rousseau G.X. colls . MPEG.ANL 0 0 0 323, adult, complete. Logged primary forest, Centro novo do Maranhão, Maranhão, Brazil, 3°41'10.76''S 46°45'56.54''W, 158 masl. 28 March 2015, Hernández-García, L.M. & Rousseau G.X. colls . MPEG.ANL 0 0 0 324, one adult, complete. Forest fragment 120 years old, Espera Village, Alcântara, MA, Brazil, 2o21'58.6''S, 44o27'16.5''W, 48 masl. 18 May 2015. Hernandez-Garcia, L.M. & Rousseau G.X. colls.

Other material. MPEG.ANL 0 0 0 360 three adult, complete. Pasture, Centro novo do Maranhão, Maranhão, Brazil, 3°40'25.3''S 46°47'20.5''W, 139 masl. 20 April 2016. Hernandez-Garcia, L.M. & Rousseau G.X. colls . MPEG.ANL 0 0 0 361, one adult, complete. Secondary forest 15 years old, Centro novo do Maranhão, Maranhão, Brazil, 3°41'57.3''S 46°46'04.8''W, 131 masl. 22 April 2016, Hernández-García, L.M. & Rousseau G.X. colls . MPEG.ANL 0 0 0 362, one adult, complete. Secondary forest 15 years old, Centro novo do Maranhão, Maranhão, Brazil, 3°42'07.3''S 46°45'37.1''W, 134 masl. 24 April 2016, Hernández-García, L.M. & Rousseau G.X. colls . MPEG.ANL 0 0 0 363, one adult, complete. Conserved forest fragment, Gurupi settlement, Canãa Village, Itinga do Maranhão, Maranhão, Brazil, 4°6'4''S 46°54'59''W, 185 masl. 22 April 2017, Hernández-García, L.M. & Rousseau G.X. colls . MPEG.ANL 0 0 0 364, one adult, complete. Secondary forest 15 years old, Rio dos Bois, Itinga do Maranhão, Maranhão, Brazil, 4°4'50.3''S 46°52'39.4''W, 149 masl. 23 April 2017, Hernández-García, L.M. & Rousseau G.X. colls . MPEG.ANL 0 0 0 365, one adult, complete. Secondary forest 16 years old, School farm, State University of Maranhão, São Luis, Maranhão, Brazil, 2°35'14.53''S 44°12'31.57''W, 62 masl. 4 June 2017, Sousa, S. & Rousseau G.X. colls . MPEG.ANL 0 0 0 366, one juvenil, complete. Secondary forest 16 years old, School farm, State University of Maranhão, São Luis, Maranhão, Brazil, 2°35'14.53''S 44°12'31.57''W, 62 masl. 4 June 2017, Sousa, S. & Rousseau G.X. colls.

Etymology. The species is named for João Castro Barroso, owner and keeper of the remaining forest that cover the land where one of those paratypes was collected in Alcântara (Espera).

Description. Dimensions: holotype 165 mm by 5.8 mm at X, 5.5 mm at clitellum, 5 mm at XXX, 183 segments; paratype 64–128 mm by 4.7 mm at X, 5.6 mm at clitellum and 4.3 mm at XXX, 127–211 segments. Body cylindrical in anterior region and slightly flattened after clitellar area for Gurupi paratypes. Paratypes found in Alcântara, São Luis and Rosario are totally cylindrical. Setae ab commence on III, cd commence on IV. Setae closely paired throughout; setal formula aa:ab:bc:cd:dd = 7.0:1.0:6.3:0.7:32.0 at XXX, dd> 1/2 circumference throughout. For flattened earthworms dd ratio is 18.2. Prostomium prolobous, post-setal secondary annulations absent. Body pigmented brownish dorsally preserved, ventrally unpigmented. Annular clitellum in XV–XXV ( Fig. 2G ), dark brown preserved, tubercula pubertatis markings smooth straight band shape present between bc line on XX–XXIII, (1/3)XXIV. Genital setae of XX 0.7–1.1 mm in length, eight alternate semilunar excavations at the subapical concave part ( Fig. 2H ). Microscopical ovipores are visible just behind ab line on white and small papilla of segment XIV. Male pores invisible. Preclitellar nephropores in d line, then in c line just after clitellum.

Conical septa equally thick and muscular in 6/7–8/9. Septa 9/10 and 10/11 absent, septum 11/12 is slightly muscular, those of 12/13–16/17 very thin. Alimentary canal with large cylindrical gizzard in VI; intestinal origin XVIII; typhlosole origin XXI, ventral margin of lamina curved upwards in a hook form. Calciferous glands paired VII–IX with dorsal esophageal connection, kidney shape and lamellar type ( Fig. 2I,J ). Holonephric, sphincters present; ducts to body wall near level of c. Post-clitellar nephridium with two loops, the first thicker than the second one, and the second connected with some loops that connect to bladder compartment ( Fig. 2K ). Vascular system with ventral trunk, supra-esophageal vessel in X, expanded in XII–XIII and then dorsally extended on intestine, latero-esophageal hearts in each of X and XI with latter pair enclosed in testis sacs. Extra-esophageal vessel from pharyngeal glands, along ventral-lateral face of gizzard. Metagynous, no spermathecae. Male sexual system holandric, testes and funnels in single mid-ventral sub-esophageal sac in each of X, XI; lobulated seminal vesicles are occupying the segments XI–XII. Deferent ducts running between bc line opening in 20/21.

Remarks. Andiorrhinus (Turedrilus) barrosoi n. sp. is similar to Andiorrhinus (Turedrilus) bare Righi & Nemeth, 1983 by the dimensions in length and a slightly annular shape of the clitellum. The main differences are the lack of spermathecae in A. (T.) barrosoi n. sp. while A. (T.) bare has two pairs of spermathecae in segments 9 and 10 (Table 1); A. (T.) bare has a clitellum between XVII–XXVI, while in A. (T.) barrosoi n. sp. it is in XV– XXV; the position and shape of the tubercula pubertatis in A. (T.) barrosoi n. sp. is XX–XXIII, (1/3)XXIV and has smooth straight band shape while in A. (T.) bare it is XXII–XXV and has transverse horseshoe shape protruding to body wall.

Figures

FIGURE 2. Andiorrhinus (Turedrilus) miricuri n. sp. (A–F) and Andiorrhinus (Turedrilus) barrosoi n. sp. (G–K). A. External ventral view of anterior body region, with clitellum, tubercula pubertatis and genital papilla. B. Genital setae of 22. C. View in cross section of right calciferous gland of 9. D. Dorsal view of transversal cut of right calciferous gland of 9, anterior body end to the top. E. View in cross section of left postclitellar nephridium. F. Dorsal view of spermathecae of 8 and 9. G. External ventral view of anterior body region, with clitellum, tubercula pubertatis and genital papilla. H. Genital setae of 20. I. View in cross section of left calciferous gland of 9. J. Dorsal view of transversal cut of right calciferous gland of 9, anterior body end to the top. K. View in cross section of right postclitellar nephridium.