Procloeon (Monilistylus) monilistylus Kluge, Tiunova & Novikova 2014

Kluge, Nikita J., 2020, New subgenus Monilistylus subgen. n. and a new species Procloeon (Monilistylus) ornatipennis sp. n. (Ephemeroptera: Baetidae: Procloeon), Zootaxa 4742 (3), pp. 573-587 : 580

Procloeon (Monilistylus) monilistylus Kluge, Tiunova & Novikova 2014

( Figs 1–2 , 24–25 , 52–54 )

Cloeon (Centroptilum) sp. 1: Kluge & Novikova 1992: 64 (larva).

Cloeon monilistylus: Tiunova 2003: 9 (nomen nudum).

Procloeon /g 1 sp.: Kluge 2011: 375.

Procloeon monilistylus Kluge, Tiunova & Novikova 2014: 484 (larva, subimago, male imago, female imago, egg).

Material examined. Holotype and paratypes (Kluge et al. 2014).

Comments. Larva, subimago, male imago, female imago and egg of this species are described in our previous paper (Kluge et al. 2014).

In the original description, mandibles were shown only in dorsal view (Kluge et al. 2014: figs 5–6). In such view, shapes of kinetodontia and left prostheca are unclear, because their flatness is perpendicular to the general flatness of the mandible. Here, the left kinetodontium and the left prostheca are shown as they are visible on the mandible, if pressed on a slide ( Figs 24–25 ). The shape of right kinetodontium of P. (M.) monilistylus is the same as in P. (M.) ornatipennis sp. n. (as in Fig. 19 ).

The fine setae of the larval leg were not shown (Kluge et al. 2014: fig. 22). Judging by the setal sockets visible on slide in Canadian balsam, long setae of the tibial base are arranged in the same manner as in P. (M.) monilistylus (as in Fig. 31 ).

Genital muscles of P. (M.) monilistylus were inaccurately figured and wrongly interpreted in the original description. Corrected drawings are given here ( Figs 52–53 ).

Figures

FIGURES 1–8. Larval exuviae. 1–2, Procloeon (Monilistylus) monilistylus: 1, right half of pro- and mesonotum; 2, thoracic sterna, pleura, metanotum, abdominal sterna and terga. 3–8, Procloeon (Monilistylus) ornatipennis sp. n.: 3, right half of pro- and mesonotum; 4, head; 5, thoracic sterna, pleura, metanotum and two legs; 6, abdominal sterna and terga (with caudalii of holotype); 7–8, caudalii of holotype, enlarged.

FIGURES 9–25. Details of larvae. 9–23, Procloeon (Monilistylus) ornatipennis sp. n.: 9–15, tergalii I–VII (holotype); 16, labrum; 17, maxilla (dorsal view); 18, right mandible; 19, its kinetodontium rotated after pressure of slide; 20, left mandible; 21–23, its incisor, kinetodontium and prostheca rotated after pressure of slide. 24–25, Procloeon (Monilistylus) monilistylus, kinetodontium and prostheca rotated after pressure of slide.

FIGURES 52–54. Procloeon (Monilistylus) monilistylus: 52–53, genital of male imago (corrected from Kluge et al. 2014); 54, exuviae of subimaginal gonostyli. Abbreviations: gs1, gs2, gs3, segments of gonostylus; m.gs, gonostylar muscle; m.gv, gonovectal (penial) muscle; m.s., median and lateral portions of styligeral muscle; usg, unistyliger.

FIGURES 30–32. Procloeon (Monilistylus) ornatipennis sp. n., legs: 30, foreleg in anterior view (holotype); 31, base of tibia in anterior view; 32, claw.