Apobaetis luanae De Lima & Cruz & Hamada 2023, sp. nov.
Creators: name: De Lima, Cláudia R. T.
name: Cruz, Paulo Vilela
name: Hamada, Neusa
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Ephemeroptera
Baetidae
Apobaetis
Apobaetis luanae

description: Apobaetis luanae sp. nov.
urn:lsid:zoobank.org:act: 4DAD1B52-E7CD-42A1-81D5-488EF898A98D
Figs 1, 9–11
Apobaetis kallawaya – Boldrini & Cruz 2014: 4.
Diagnosis
NYMPH. Characterized by a combination of the following characters: 1) labrum rectangular with rounded distolateral margins, distal medial margin with three protuberances; dorsal surface with 4 short and simple medial spine-like setae near distal margin; ventral surface with short medial spine-like setae near distal margin (Fig. 10A, C); 2) hypopharynx with lingua subquadrangular, elongated, with apical tuft of setae, subequal in length to superlingua (Fig. 10G); 3) maxillary palp long 2.0 × length of galea-lacinia; segment II without apical constriction (Fig. 10H); 4) labial palp with segment II with robust triangular distomedial projection, apically rounded, laterally directed; segment III triangular (Fig. 10I); 5) foreleg with anterior surface of femur with one row of 4 to 5 minute blunt setae, on basal half, near dorsal margin; claw I 0.6× length of tarsus I, with two row of denticles on basal third; 6) posterior margin of tergum IV with triangular spines, wider than long (Fig. 11D); 7) paraproct with several marginal spines, posterolateral extension with minute spines (Fig. 11F).
Etymology
The species name is a tribute to Dr Luana Araújo. She spoke out vehemently against the ineffective drugs used to treat COVID- 19 in the testimony to the CPI organized by the Brazilian Federal Senate in 2021.
Material examined
Holotype BRAZIL • nymph on slide; Roraima, Amajari, Rio Ereu; 04º02′02.9″ N, 61º23′09.5″ W; 26 Mar. 2012; N. Hamada, P. V. Cruz, G. Dantas and R. Boldrini leg.; INPA.
Paratypes BRAZIL – Roraima • 2 nymphs on slide; same collection data as for holotype; INPA • 1 nymph in alcohol 80%; same collection data as for holotype; INPA.
Additional material
BRAZIL – Rondônia • 1 nymph on slide; Teixeirópolis, Vale das Cachoeiras; 10º55′20.4″ S, 62º22′34.7″ W; 3 Sep. 2012; R. Boldrini, A.S. Fernandes and N. Hamada leg.; INPA • 1 nymph on slide; same collection data as for preceding, except date 10 Jul. 2018; INPA.
Description
Nymph
LENGTH. Body: 3.0– 3.3 mm.
HEAD. Antenna: flagellum with minute spines on apex of each flagellomere. Labrum (Fig. 10A–C): length 0.6× maximum width; rounded distolateral margins; distal medial margin with three protuberances; dorsal surface with 4 short and simple medial spine-like setae near distal margin, with one row of long, thin and simple setae near distal margin; dorsal surface covered with long, thin and simple setae; ventral surface with one row of robust spine-like setae near distolateral and distal margins; short medial spine-like setae near distal margin. Left mandible (Fig. 10D–E): incisors not fused; outer and inner set of incisors with 4 and 3 denticles, respectively; prostheca slender, bifurcated at apical middle; margin between prostheca and mola concave; subtriangular process wide with small protuberance on distal margin and 3 short spine-like setae at base; tuft of setae at base of subtriangular process; denticles of mola not constricted, with 4 prominent denticles in irregular sizes; lateral margin convex. Right mandible (Fig. 10F): incisors not fused; outer and inner set of incisors with 3 and 2 denticles, respectively; prostheca slender, bifurcated at apex; margin between prostheca and mola concave; tuft of setae at base of mola absent; denticles of mola not constricted; lateral margin convex. Hypopharynx (Fig. 10G): lingua subquadrangular, longitudinally elongated, apex covered with short setae, subequal to superlingua; superlingua oval, longitudinally elongated, with thin setae of different sizes on distolateral and distal margins. Maxilla (Fig. 10H): maxillary palp long 2.0 × length of galea-lacinia; segment I subequal to galea-lacinia; segment II with narrow base and apex, with thin and simple setae scattered on surface, without apical constriction; medial margin of galea-lacinia with 2 spine-like setae. Labium (Fig. 10I): glossa subtriangular, longer than paraglossa; dorsal surface with one longitudinal row of 8 short spine-like setae on apical ⅔ near inner margin; 1 robust spine-like seta on apex; longitudinal row of 5 robust spine-like setae on apical middle near outer margin; ventral surface covered with long, thin and simple setae. Paraglossa curved inward; dorsal surface with 1 long and robust spine-like seta on apex; longitudinal row of 9 long spine-like setae on apical ⅔ near outer margin and longitudinal row of 3 long and robust spine-like setae on apical middle near inner margin. Labial palp with segment I 0.6× length of segments II and III combined, covered with micropores (not illustrated); segment II with outer margin covered by thin, long and simple setae, inner margin bare; segment II with robust triangular distomedial projection, apically rounded, laterally directed; ventral surface of distomedial projection with tuft thin, long and simple setae; segment III triangular, length subequal to width, covered by thin, long and simple setae on outer margin, dorsally with one row of 8 robust spine-like setae near inner margin, ventrally with one row of 5 robust spine-like setae in near distal margin.
THORAX. Holotype pigment (Fig. 9A–B): light yellow; femur without mark. Legs (Fig. 10A–C). Femur: anterior surface with one row of 4 to 5 minute blunt setae, on basal half, near dorsal margin; ventral margin with one row of 3 to 4 elongated spine-like setae on basal third. Tibia: dorsal margin bare; ventral margin with one row of 6 to 7 spine-like setae. Patella-tibial suture present, from dorsal margin to ventral margin. Tarsus: dorsal margin bare; ventral margin with one row of 10 to 11 spine-like setae; tarsus I 1.2× length of tibia I; tarsi II and III length subequal to tibiae II and III. Claws: two rows of denticles on basal third; claw I 0.6× length of tarsus I; claws II and III 0.7× length of tarsi II and III.
ABDOMEN. Holotype pigment (Fig. 9A–B): terga II–X covered by light brown marks; cerci and paracercus with medial brown mark. Tergum IV (Fig. 11D): surface covered by triangular scale-like projections and micropores; posterior margin with triangular spines, wider than long. Gills (Fig. 11E): rounded apex, simple trachea without branches; long length, extending to half third subsequent tergum. Paraproct (Fig. 11F) with several marginal spines; posterolateral extension with minute spines. Cerci (Fig. 11G) with short spines on all segments; medial brown mark. Paracercus (Fig. 11H) without spines; medial brown mark.
description: Published as part of De Lima, Cláudia R. T., Cruz, Paulo Vilela & Hamada, Neusa, 2023, Additions and corrections to taxonomy of Apobaetis fiuzai Salles & Lugo-Ortiz, 2002 and Apobaetis kallawaya Nieto, 2006 (Ephemeroptera, Baetidae), pp. 136-161 in European Journal of Taxonomy 879 (1) on pages 153-155, DOI: 10.5852/ejt.2023.879.2167, http://zenodo.org/record/8155397