Pedicelliops, Kaltenbach & Gattolliat, 2020

Kaltenbach, Thomas & Gattolliat, Jean-Luc, 2020, Pedicelliops gen. nov., a new genus from West Africa with striking antennae (Ephemeroptera, Baetidae), African Invertebrates 61 (2), pp. 119-135 : 119

publication ID	https://dx.doi.org/10.3897/afrinvertebr.61.59354
publication LSID	lsid:zoobank.org:pub:C984D926-DA6C-40F1-BF37-33D0955B7885
persistent identifier	https://treatment.plazi.org/id/0BD8D226-CC87-4807-9608-247830E581C5
taxon LSID	lsid:zoobank.org:act:0BD8D226-CC87-4807-9608-247830E581C5
treatment provided by	African Invertebrates by Pensoft
scientific name	Pedicelliops
status	gen. nov.

Treatment

Pedicelliops gen. nov. Figures 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4 , 5 View Figure 5 , 6 View Figure 6 , 7 View Figure 7

Type species.

Pedicelliops capillifer gen. et sp. nov., by present designation.

Diagnosis.

Larva. This new genus is distinguished by the combination of the following characters: A) body elongate and slender, head clearly hypognathous (Figs 1 View Figure 1 , 2 View Figure 2 ); B) base of antennae close to each other, with carina between them (Fig. 2d View Figure 2 ); C) antenna shorter than head length, with strong bilateral enlargement of pedicellus (Fig. 3a View Figure 3 ); D) labrum small and rectangular, distal margin with medial emargination and small, square process, dorsal surface with long, stout, simple setae, erratically distributed in distal part, not arranged in one arc (Fig. 4a View Figure 4 ); E) right mandible with a stick-like, apically denticulate prostheca and a brush of short, fine setae between prostheca and mola (Fig. 4b, c View Figure 4 ); F) left mandible with a robust prostheca, apically with a comb-shaped structure and with a brush of short, fine setae between prostheca and mola (Fig. 4d, e View Figure 4 ); G) hypopharynx with medial tuft of stout setae (Fig. 4g View Figure 4 ); H) maxillary palp 2-segmented (Fig. 4h View Figure 4 ); I) glossae basally broad, narrowing toward apex, slightly shorter than paraglossae, ventrolateral margin with a row of short, thin setae and a row of long, simple setae close to margin, apically with some robust, long, curved setae; stout paraglossae with convex outer margin and apex, ventrolateral margin with a row of long, simple setae; labial palps segment II with distolateral protuberance, directed distally, segment III conical (Fig. 4i, j View Figure 4 ); J) legs with many long, simple setae on margins and on both surfaces of femur, femoral patch absent on all legs, patellotibial suture absent on foreleg and present on middle and hind legs, claw robust and pointed, with two rows of denticles (Figs 5 View Figure 5 , 6 View Figure 6 ); K) fore protoptera with a protuberance near inner margin (Fig. 2a, b View Figure 2 ); L) posterior margin of abdominal tergites I-VIII smooth without spines (Fig. 1a View Figure 1 ).

Imagines. Unknown.

Etymology.

Pedicelliops is an arbitrary combination of letters with allusion to the Latin pedicellus and the Greek iops. Pedicellus is with reference to the striking second segment of the antennae and iops with reference to the Baetidae which look and move like small fishes. The gender is masculine.

Description.

Larva. (Figs 1 View Figure 1 - 6 View Figure 6 ).

Body. Elongate and slender, head hypognathous (Figs 1 View Figure 1 , 2 View Figure 2 ).

Head. Antenna (Figs 3a, b View Figure 3 , 2c, d View Figure 2 ) shorter than head length with strong bilateral enlargement of pedicellus. Antennae bases in close proximity to each other, with small carina between them.

Labrum (Fig. 4a View Figure 4 ). Small in comparison to other mouthparts, rectangular, wider than long; dorsal surface with long, stout, simple setae, erratically distributed in distal part, not arranged in one arc; ventrally with marginal row of setae composed of anterolateral long, simple setae and medial long, bifid setae.

Right mandible (Fig. 4b, c View Figure 4 ). Incisor and kinetodontium fused, both with well-developed denticles; inner margin of innermost denticle without a row of thin setae; prostheca stick-like, apically denticulate; margin between prostheca and mola with a brush of abundant, short, fine setae.

Left mandible (Fig. 4d-f View Figure 4 ). Incisor and kinetodontium fused, both with well-developed denticles; prostheca robust, apically with comb-shaped structure; margin between prostheca and mola with a brush of abundant, short, fine setae.

Hypopharynx (Fig. 4g View Figure 4 ). With a dorsomedial tuft of stout setae on lingua.

Maxilla (Fig. 4h View Figure 4 ). Apically with three stout canines and three denti-setae; distal denti-seta tooth-like, following same direction as canines, other denti-setae slender, bifid and pectinate; maxillary palp with two segments.

Labium (Fig. 4i, j View Figure 4 ). Glossae basally broad, narrowing toward apex, slightly shorter than paraglossae; ventrolateral margin with a row of short, thin setae and a row of long, simple setae close to inner margin, apically with some robust, long, curved setae. Paraglossae with convex outer margin and apex; ventrolateral margin with a row of long, simple setae; apical margin with three rows of long, stout setae (Fig. 4j View Figure 4 ). Labial palps segment II with distolateral protuberance, segment III conical.

Thorax. Fore protoptera (Fig. 2a, b View Figure 2 ). With a protuberance near inner margin.

Hind protoptera. Absent.

Foreleg (Figs 5a-c View Figure 5 , 6a View Figure 6 ). Femur with many long, simple setae on dorsal and ventral margins and on both lateral surfaces; femoral patch absent; apex of femur with ventral lobe poorly developed; patellotibial suture absent; claw robust and pointed, with two divergent rows of denticles.

Middle and hind legs (Figs 5d-f View Figure 5 , 6b, c View Figure 6 ). More slender than foreleg; femur with same setation as foreleg; femoral patch absent; anterior outer projection of femur apex directed towards the inner side of femur (Fig. 5d View Figure 5 ); patellotibial suture present; claw as in foreleg.

Abdomen. Tergites. Posterior margin of segments I-VIII smooth, without spines.

Gills (Fig. 3c, d View Figure 3 ). Seven pairs of gills on segments I-VII, dorsally oriented.

Paraproct (Fig. 3e View Figure 3 ). Without prolongation at posterior margin, with stout, marginal spines; cercotractor with few minute, marginal spines.

Caudal filaments (Fig. 1a, d View Figure 1 ). Inner margin of cerci with 2- 18 long, thin setae per segment, increasing in number distally; paracercus bilaterally with 3 to more than 12 long, thin setae per segment, increasing in number distally. Paracercus not reduced, but broken.

Description.

Imagines. Unknown.

Distribution

(Fig. 7 View Figure 7 ). West Africa: Guinea.