Bunostigma Mello-Leitão, 1935

Kury, Adriano Brilhante & Caramori, Laura Regina, 2021, An unusual cryptogeobiid from southeastern Brazil revisited (Opiliones, Laniatores, Gonyleptoidea), Papéis Avulsos de Zoologia 61, pp. 1-7 : 3

Bunostigma Mello-Leitão, 1935

Bunostigma Mello-Leitão, 1935a: 10 . Type-species by original designation: Bunostigma singulare MelloLeitão, 1935 .

Bunostigma – Mello-Leitão, 1935b: 98; Soares & Soares, 1954: 239; Maury, 1993: 102; Kury, 2003: 201.

Etymology: From Greek βουνός (mound) + στίγμα (mark; spot). Gender neuter.

Placement: Bunostigma was originally in Pachylinae. Transferred to Tricommatinae by Kury (2003: 201) and to Cryptogeobiidae by Kury (2014).

Diagnosis: Ti IV of male with a row of six stout retrolateral spiniform apophyses ( Figs. 1 A-B; as opposed to all other cryptogeobiids). MS E2 considerably stouter (at least 5 × longer) than E1 ( Fig. 5D ; contrasting with immediately related genera of Kury’s 2014 group A). Tr IV of male with broad triangular median retrolateral apophysis ( Figs. 1 C-D, 2D; shared with Cryptogeobius , Spinopilar and Taquara ). “Zebra-pattern” on the dorsal scutum: mesotergal areas dark brown, sharply contrasting with dark yellow background of the rest of the scutum ( Figs. 1C, E, G ; contrasting with Cryptogeobius and shared with Heteromeloleptes and Tibangara ). Cx IV of male with elongate retrolateral apophysis which is applied on a socket on stigmatic area ( Figs. 2 A-B, D-F; exclusively shared with Cryptogeobius ).

Figures

Figure 5. Bunostigma singulare Mello-Leitão, 1935, male (MNRJ 7679), genitalia, penis, pars distalis. (A) Dorsal view. (B) Dextrolateral view. (C) Ventral view. (D) Same,magnified.(E)Apical view.(F)Glans,dorsolateral view.(G) Same,dorsal view.Scale bars:A = 50μm;B-C= 20μm;D-G =10 μm.Colorof macrosetae are: MS A (light blue),MS B (dark blue),MS C (magenta),MS D (orange) and MS E (green).

Figure1.HabitusofBunostigmasingulareMello-Leitão,1935.(A)Male,invivo atTinguá,RJ.(B)Same,anotherview.(C)Male(MNRJ7679)habitusdorsalview.(D)Same, ventral view.(E) Same,panoramicview.(F)Same,dextrolateral view.(G)Female (MNRJ7679)habitusdorsalview.Scalebars:A-G =1 mm.All photographsby A.B.Kury.

Figure2.BunostigmasingulareMello-Leitão,1935,male(MNRJ7679).(A)BodyandproximallegIV,dorsalview.(B)BodyandCxIV,dextrolateralview.(C)Habitus,without right sideappendages,frontalview.(D)Body,ventralview.(E) RightCx IIIIV,dorso-lateral view.(F)Same,magnified.Scale bars:A-D= 500μm;E = 200μm;F = 100μm.