Heteropyge cayennophilus (Silvestri, 1897)

Iniesta, Luiz F. M., Bouzan, Rodrigo S. & Brescovit, Antonio D., 2019, On the millipede genus Heteropyge: description of the adults of H. araguayensis and revalidation of H. bidens (Diplopoda: Spirostreptida: Spirostreptidae), Iheringia, Série Zoologia (e 2019032) 109, pp. 1-13 : 11

Heteropyge cayennophilus (Silvestri, 1897)

( Figs 30−32 , 36−38 , 42−44 )

Archispirostreptus cayennophilus SILVESTRI, 1897b:348 .Male holotype from Cayenna [4°55’21.13”N; 52°19’36.66”W], French Guiana, deposited in IRSNB, not examined. VIGGIANI, 1973:355.

Gymnostreptus (Gymnostreptus) cayennophilus ATTEMS, 1914:132 .

Orthoporus brasiliensis SCHUBART, 1947:52 . Syntypes from Aurá, Ananindeua [1°25’34.82”S; 48°23’10.84”W], state of Pará, Brazil, 18.IV.1940,A. L. Carvalho leg., deposited in MZSP and MNRJ 11846, examined; MAURIÈS, 1975:1272.

Scaphiostreptus (Scaphiostreptus) cayennophilus . ATTEMS, 1950:231.

Heteropyge brasiliensis . HOffMAN, 1960:113. Synonymized by MAURIÈS, 1975:1272.

Orthoporus cayennophilus . JEEKEL, 1963:5.

Heteropyge cayennophilus . MAURIÈS, 1975:1272; KRABBE, 1982:333.

Additional material examined. FRENCH GUIANA, Cayenne: Bordat Montabo (04°56’46.47”N; 52°18’24.50”W) , 2♂, 5♀, 2 immatures, VII.1951, A. R. Hoge & J. M. Ruiz leg. ( IBSP 636 ) ; BRAZIL, Pará: Aurá (01°26’37.99”S; 48°23’9.24”W) , 2♂, 6♀, ♀ immature, 18.IV.1940, A. L. Carvalho leg. ( MNRJ 11847 ) ; 52♀ ( MNRJ 11881 ) ; ♂ ( MNRJ 11838 ) ; ♂ ( MNRJ 11840 ) ; 25♂ immatures ( MNRJ 11848 ) ; 11♀ immatures ( MNRJ 11832 ) ; 27♂ ( MNRJ 11853 ) ; ♂ ( MNRJ 11839 ) .

Diagnosis. Males of H. cayennophilus can be recognized by a rounded process on the prefemur of the first pair of legs ( Fig. 43 ). Gonopod with an erect straight proplica ( Fig. 36 ); a short or inconspicuous ( MAURIÈS, 1975:1273, figs 32, 33) apicomesal process (app, Figs 36, 37 ); distolateral process on metaplica (dmp, Figs 36, 37 ) not protruding in posterior view; contiguous with metaplica ( Fig. 37 ), different in diagonal aspect from that of H. bidens ( Fig. 34 ); short and rounded in appearance.

Description. Described by SCHUBART (1947) as O. brasiliensis and with a complementary description by MAURIÉS (1975). Additional data are presented here.

Male ( IBSP 636) ( Figs 30-32 ). Total length: 40 mm. Maximum vertical diameter: 2 mm.

First pair of legs: coxae rounded, with 5+5 setiform setae in a curved row on mesal region ( Figs 42, 43 ). Prefemur triangular; 2+2 distomesal setae; a rounded prefemoral process; inconspicuous scattered setae at base of the process ( Fig. 43 ). Tibia with membranous ventral pads ( Fig. 42 ). Neither femur nor postfemur with ventral pads (at least not imperceptible). Second pair of legs: coxae rounded. Prefemur apprised to and contiguous with distal portions of the coxae; postfemur and tibia with very short membranous ventral pads ( Fig. 44 ). Penis elongated and rounded.

Gonopod ( Figs 36−38 ). Sternum semi-circular. Paracoxite (px) rounded. Proplica very short (pp); erect straight; with short apico-mesal process (app, Fig. 37 ). Metaplica elongated (mp); distolateral metaplical (dmp) process not protruding in posterior view ( Fig. 37 ), rounded and contiguous with metaplica. Inner process of metaplica (ip) evident; straight ( Fig. 38 ). Telopodite bulky; antetorsal process absent; a large, lamellar, broad expansion covering partially the solenomere. Solenomere with one complete 360° torsion.

Distribution. Known from the northern region in French Guiana ( SILVESTRI, 1897b; MAURIÈS, 1975), and extending down to the state of Pará in Brazil ( SCHUBART, 1947).

Figures

Figs 27−32. Stereoscopic images. Figs 27-29, Heteropyge bidens (Schubart, 1945) male (MZSP 1014): 27, anterior region; 28, posterior region; 29, ventral view. Figs 30-32, Heteropyge cayennophilus (Silvestri, 1897) male (IBSP 636): 30, anterior region; 31, posterior region; 32, ventral view. Scale bars: 27, 1 mm; 28, 1 mm; 29, 1 mm; 30, 1 mm; 31, 500 µm; 32, 500 µm.

Figs 33−38. Stereoscopic images of the gonopods. Figs 33-35, Heteropyge bidens (Schubart, 1945) male (MZSP 1014): 33, anterior view; 34, detail of the distal region in anterior view; 35, posterior view. Figs 36-38, Heteropyge cayennophilus (Silvestri, 1897) male (IBSP 636): 36, anterior view; 37, detail of the distal region in anterior view; 38, posterior view. Scale bars: 33, 200 µm; 34, 100 µm; 35, 200 µm; 36, 500 µm; 37, 200 µm; 38, 500 µm.

Figs 39−44. Stereoscopic images of the first and second pair of legs. Figs 39-41, Heteropyge bidens (Schubart, 1945), male (MZSP 1014): 39, first pair of legs in anterior view; 40, detail of the prefemoral process in anterior view (the arrows refers to prefemoral process); 41, second pair of legs in posterior view. Figs 42-44, Heteropyge cayennophilus (Silvestri, 1897), male (IBSP 636): 42, first pair of legs in anterior view; 43, detail of the prefemoral process in anterior view (the arrows refers to prefemoral process); 44, second pair of legs in posterior view. Scale bars: Fig. 39, 400 µm; 40, 200 µm; 41, 400 µm; 42, 500 µm; 43, 250 µm; 44, 500 µm.