Monoblemma unicum Gertsch, 1941

Martínez, Leonel, 2025, A revision of the genus Monoblemma Gertsch, 1941 (Araneae: Tetrablemmidae) in Central America and the Caribbean, Zootaxa 5636 (2), pp. 287-315 : 289

Monoblemma unicum Gertsch, 1941

Figure 1 .

Monoblemma unica Gertsch, 1941: 10 , figs. 9–12

( male holotype from Barro Colorado Island , Canal Zone, Panama, 9.VI.1938 E. G. Williams, Jr. leg., deposited in AMNH, examined ).

Monoblemma unicum Shear, 1978: 21 , figs. 47–50 (correction of specific epithet according to the gender of the generic name); Nentwig, 1993: 97, figs. 48A–C.

Diagnosis. This is the only species in the genus that has a single median eye on the edge of the clypeal declivity ( Gertsch 1941: 8; Fig. 1A–B, D ). Males can be further distinguished by the robust embolus with a canal along its full extension ( Fig. 1F–I ).

Description. An excellent and highly detailed description was originally provided by Gertsch (1941). This description was successfully supplemented by Shear (1978).

Distribution. Only known from Panama ( Fig. 21 ).

Figures

FIGURE 1. Monoblemma unicum Gertsch, 1941, male holotype (AMNH). A. Habitus, dorsal view. B. Same, lateral view. C. Same, ventral view. D. Original label of the holotype. E. Frontal view. F. Right male palp, prolateral view. G. Same, retrolateral view. H. Embolus, prolateral view. I. Same, retrolateral view.

FIGURE 21. Distribution of Monoblemma species in Central America and Caribbean.