Cloeodes auwe Salles et al. 2004

Kluge, Nikita J., 2017, Contribution to the knowledge of Cloeodes Traver 1938 (Ephemeroptera, Baetidae), Zootaxa 4319 (1), pp. 91-127 : 121-122

Cloeodes auwe Salles et al. 2004

( Figs 126–136 )

Cloeodes auwe Salles & Batista (in Salles et al.) 2004 : 5 (larva); Falcao et al. 2011: 531 (larva); Massariol et al. 2013: 3 (larva, ♂ and ♀ imagoes).

Material examined. PERU, Region Loreto: Prov. Maynas, Quebrada El Sabalo (right tributary of Rio Itaya ) between Puente Itaya (57 km from Iquitos ) and San Joaquin (at Rio Amazon ), 4°16'S, 73°27'W, 2.II.2006, coll. N. Kluge: 1 L-S ♀ ; Prov. Ucayali, Pampa Hermosa , 4°13'S, 75°22'W, 9–21.VIII.2013, coll. N. Kluge & L. Sheyko: 1 L/S ♂, 2 larvae .

Descriptions. Larva. Larva has unusual coloration ( Falcao et al. 2011: Fig.83 ), which represents combination of composite cuticular brown makings ( Fig. 133–134 ) and hypodermal reddish and black spots ( Fig. 135 ). Abdominal tergum I without denticles on posterior margin; terga II–X with long spine-like denticles ( Fig. 134 ). All tergalii I–VII sharply widened posteriad, tergalius I also sharply widened anteriad ( Fig. 126–132 ). Other characters as described by Salles et al. 2004, Falcao et al. 2011, Massariol et al. 2013.

DEVELOPING MALE GENITALS: In last larval instar, developing subimaginal gonostyli folded under larval cuticle in « Nigrobaetis -type» pose, with 2nd segment bent by convexity medially, and 3rd segment directed caudally ( Fig. 136 ).

Subimago. TEXTURE: On all legs of both sexes last tarsal segment entirely covered by pointed microlepides; other tarsal segments at most part covered by blunt microlepides, apically by pointed microlepides ( Table 1).

Tarsal spines of winged stages. Tarsus of fore leg in male and female without apical spines. Tarsus of middle and hind leg of both sexes with 1 apical spine on initial 3rd tarsomere (next after 1st+2nd tarsomere) ( Table 1). Other characters of imago are described by Massariol et al. 2013.

Dimension. Fore wing length of male 4 mm, of female 5 mm ( Massariol et al. 2013).

Distribution. Amazonia ( Brazil, Peru).

Discussion. Massariol et al. (2013) wrote in diagnosis of this species: “6) ... segment I with a circular clear mark at anteromedial region; 7) Spines on posterior margin of tergum I present”. Actually the circular clear mark is present not on the abdominal segment I, but on the segment II; judging by the photo in the same paper, this segment II bears a regular row of long spines on posterior margin, while segment I has no spines ( Massariol et al. 2013: Fig. 2). Specimens examined by me also have spines beginning from tergum II, and no spines on tergum I.

Figures

FIGURES 119 – 132. Cloeodes spp., tergalii. 119 – 125, tergalii I – VII of Cloeodes nigrohumeris sp. n.; 126 – 132, tergalii I – VII of Cloeodes auwe. For both individuals vertical line corresponds to length of abdominal segment IV.

FIGURES 133 – 135. Cloeodes auwe, details of the same mature larva ready to molt to subimago: 133, detached cuticle of half of pronotum and mesonotum; 134, detached cuticle of abdomen; 135, extracted abdomen with hypodermal coloration. Abbreviations: I – X, abdominal segments I – X.

FIGURES 136 – 138. Cloeodes spp. 136, Cloeodes auwe, subimaginal sternum IX with styliger and gonostyli developing under larval cuticle (gonovectes shown by interrupted line; at left half gonovectal and gonostylar muscles shown by interrupted lines, hypodermal pigment shown by dots; median styligeral muscle shown by interrupted lines). 137 – 138, Cloeodes superior: 137, exuviae of subimaginal genitals; 138, genitals of male imago (gonovectes shown by interrupted line; at right half gonovectal and gonostylar muscles shown by interrupted lines; median styligeral muscle shown by interrupted lines, areas of anterior attachment of median paraproctal muscles shown by dotted lines). Abbreviations: 1, 2, 3, segments of gonostylus; m. IX-X, areas of anterior attachment of median paraproctal muscles (i. e., muscles going from sternum IX to common base of paraprocts); m. sg, median sterno-styligeral muscle; usg, unistyliger.

FIGURES 82 – 85. Cloeodes redactus, female imago, form « nigrostriatus ».