Securiops Jacobus et al. 2006

Kluge, Nikita J., 2023, Redescription of the subgenus Securiops Jacobus, McCafferty & Gattolliat 2006 (Ephemeroptera, Baetidae, Procloeon Bengtsson 1915), Zootaxa 5343 (3), pp. 243-272 : 246

Subgenus Securiops Jacobus et al. 2006

( Figs 1–144 )

Genus Securiops Jacobus, McCafferty & Gattolliat 2006: 133 (larva).

Subgenus Securiops: Kluge 2020a: 577 (larva, male imago, egg).

Type species: Potamocloeon macafertiorum Lugo-Ortiz (in Lugo-Ortiz & McCafferty) 1996.

Figures

FIGURES 1–24. Right tergalii of Securiops with dorsal lamella turned out. 1–7, Procloeon (Securiops) falcatum, tergalii I–VII; 8–17, two individuals of P. (S.) macafertiorum: 8–11, tergalii I–II and V–VII; 12–16, tergalii I–V; 17, the same individual, margins of abdominal segments VII–IX with tergalius VII in natural position; 18–24, P. (S.) primasia, tergalii I–VII.

FIGURES 25–30. Procloeon (Securiops) falcatum. 25–28, larval exuviae (with same magnification): 25, abdominal sterna; 26, abdominal terga; 27, half of pronotum and mesonotum; 28, fore leg; 29, exuviae of metanotum with hind protoptera, left metapleuron and 1st abdominal tergum, enlarged; 30, fore protopteron, to show correspondence between cuticular coloration and veins visible inside.

FIGURES 31–39. Procloeon (Securiops) falcatum, larval mouthparts. 31, apex of labrum, ventral view; 32, labrum, dorsal view; 33, apex of labrum, enlarged; 34–35, left and right mandibles; 36, maxilla; 37–38, apex of maxilla with focus on ventral and dorsal sides; 39, hypopharynx with superlinguae.Abbreviations: can, maxillary canines; ds1, ds2, ds3, 1st–3rd dentisetae,

FIGURES 40–46. Procloeon (Securiops) falcatum, labium. 40, integral labium; 41–46, parts of exuviae: 41, glossae and paraglossae, ventral view; 42, half of labium of another individual (ventral setae of glossae directed distally); 43, the same individual, with ventral setae of glossae directed proximally; 44, distal segments of labial palp; 45–46, enlarged glossae in ventral and dorsal view (ventral setae directed distally). Abbreviations: m2-3, muscle going from 2nd palpomere to base of 3rd palpomere; pm1, pm2, pm3, 1st–3rd palpomeres; s.d, dorsal setae of glossae; s.v, ventral setae of glossa.

FIGURES 47–52. Procloeon (Securiops) falcatum, larva. 47, articulation of femur and tibia of fore leg, dorsal view; 48, the same, compressed to show junction of patella-tibial suture with row of fine hairs; 49, fragment of tarsus; 50, claw; 51, abdominal tergum X and margin of tergum IX; 52, abdominal tergum X and paraprocts.

FIGURES 53–58. Procloeon (Securiops) falcatum, exuviae of larval abdomen. 53–56, terga II, III, IV and IX; 57, sternum IV; 58, constant bifurcate seta on sublateral part of sternum VIII.

FIGURES 59–65. Procloeon (Securiops) falcatum. 59–60, parts of male subimago extracted from larva: 59, abdomen; 60, genitalia; 61–64, young male subimago: 61, abdomen; 62, genitalia; 63, fore femur; 64, hind wing (partly crumpled); 65, genitalia of male imago (after Crass 1947). Abbreviations: gs1, gs2, gs3, 1st–3rd segments of gonostylus; pb, median projection of penial bridge; usg, unistyliger.

FIGURES 66–69. Larvae of Procloeon (Securiops) macafertiorum. 66–68, larval exuviae (with same magnification): 66, abdominal terga and sterna; 67, thoracic sterna, pleura, halves of metanotum with hind protoptera and right legs (arrows show hind protoptera); 68, half of pronotum and mesonotum; 69, last instar male larva.

FIGURES 70–76. Procloeon (Securiops) macafertiorum. 70, subimaginal exuviae: apex of tibia and base of tarsus of fore leg of male; 71–76, larval exuviae: 71, caudalii; 72, fragment of cercus; 73, fragment of fore tarsus; 74, abdominal tergum IV; 75, abdominal sternum V; 76, abdominal tergum X, paraproct and margin of tergum IX.

FIGURES 77–87. Procloeon (Securiops) macafertiorum. 77, 78, male imagines; 79, female imago; 80–87, parts of male imago and subimago reared from larva: 80–81, head and thorax; 82, abdomen; 83, hind wing; 84, subimaginal exuviae of thoracic pleura; 85, subimaginal exuviae of half of mesonotum; 86–87, fore and hind legs. Abbreviations: cx2, cx3, coxae of middle and hind legs; lpnc, lateropostnotal crest; mtpl, pleurite of metathorax; pls, pleural suture; psa, postsubalar sclerite.

FIGURES 88–91. Procloeon (Securiops) macafertiorum. 88, genitalia of male imago reared from larva; 89, its subimaginal exuviae; 90, genitalia of another specimen, ventral view; 91, the same, with focus on penis.

FIGURES 92–97. Procloeon (Securiops) macafertiorum, eggs extracted from mature larva.

FIGURES 98–105. Procloeon (Securiops) mutadens. 98–99, left and right mandibles; 100, labrum; 101, maxilla; 102, larval cuticle of metanotum with vestige of hind protopteron; 103, abdominal tergum V; 104, abdominal sternum V; 105, caudalii. Abbreviation: sc, scales and scale sockets.

FIGURES 106–115. Procloeon (Securiops) primasia, larval exuviae. 106–108, dark individual (female); 109–115, light individual (male); 106, 115, abdominal terga and sterna; 107, 110, half of pronotum and mesonotum; 108, 111, left thoracic pleura and half of metanotum; 109, part of head; 112–114, fore, middle and hind legs.

FIGURES 116–119. Procloeon (Securiops) primasia, exuviae of labium. 116, labium (ventral setae of glossae directed proximally); 117, 2nd and 3rd segments of labial palp; 118–119, glossae in ventral and dorsal views (ventral setae directed proximally). Abbreviations: pm1, pm2, pm3, 1st–3rd palpomeres; s.d, dorsal setae of glossae; s.v, ventral setae of glossa.

FIGURES 120–125. Procloeon (Securiops) primasia, larval exuviae. 120, base of tibia of fore leg, with focus on dorsal side; 121, the same with focus on ventral side; 122, abdominal tergum V; 123, abdominal sternum VIII; 124, cercus and paracercus; 125, portion of cercus.

FIGURES 126–136. Procloeon (Securiops) primasia. 126–127, male imagines; 128, female imago; 129, subimaginal exuviae of half of mesonotum; 130, subimaginal exuviae of thoracic pleura; 131–133, fore leg of female imago; 134–136, its middle leg. Abbreviations: cx2, cx3, coxae of fore, middle and hind legs; lpnc, lateropostnotal crest; mtpl, pleurite of metathorax; pls, pleural suture; psa, postsubalar sclerite.

FIGURES 137–142. Procloeon (Securiops) primasia. 137–141, genitalia of male imagines: 137, ventral view; 138, lateral view, right gonostylus and styliger removed; 139, lateral view of penis; 140, apex of penis with focus on its dorsal margin; 141, the same penis with focus on ventral side; 142, subimaginal exuviae of genitalia.

FIGURES 143–145. 143–144, eggs of Procloeon (Securiops) primasia. 145, male imaginal genitalia of Cheleocloeon excisum (Barnard 1932), reared from larva in Eerste river 9.II.2019 by N. Kluge and L. Sheyko [the same locality as for P. (S.) falcatum]. Abbreviation: mp, micropyle.