Kempnyia reticulata (Klapálek)

Silva, Fernanda Avelino-Capistrano da, Barbosa, Leandro Silva & Almeida, Gisele Luziane de, 2011, Complementary Descriptions Of Kempnyia Gracilenta (Enderlein 1909) And Kempnyia Reticulata (Klapálek 1916) (Plecoptera: Perlidae), Illiesia 7 (14), pp. 142-147 : 144-146

Kempnyia reticulata (Klapálek)

( Figs. 4-9 )

Eutactophlebia reticulata Klap á lek 1916:46 .

Eutactophlebia reticulata: Claassen, 1940:182 .

Kempnyia calabriae: Joost, 1980:73 . ( Figs. 1-4 )

Kempnyia reticulate: Zwick, 1983:177-180 . ( Figs. 1-4 )

Material Examined. Brazil. Espírito Santo. Santa Teresa. Córrego Sagüi . 05.vii.2008, 5 larvae; 03.iv.2009, 2 larvae; 04.vii.2008, 2♀; 25.vi.2009, 3 larvae. Córrego Tapinuã, 04.vii.2008, 3 larvae; 10.ix.2008, 1 larva; 03.ii.2009, 3 larvae; 04.iv.2009, 3 larvae; 26.vi.2009, 3 larvae; 01.vii.2009, 1♂. Córrego da Divisa , 02.vii.2009, 2 larvae; 03.ii.2009, 4 larvae; 04.iv.2009, 16 larvae; 26.vi.2009, 7 larvae. Córrego Bonito, 03.vii.2008, 9 larvae; 14.ix.2008, 12 larvae; 12.xi.2008, 3 larvae; 05.ii.2009, 7 larvae; 05.iv.2009, 20 larvae; 26.vi.2009, 15 larvae.

Female. Brown eyes; ocelli partially black; triangular spot between the ocelli pale. Base of antennae light brown (pedicel). Pronotum with conspicuous reticulate rugosities and brown median band. Legs light brown but darker near the tips, particularly at the femoral apex. Venter and cerci with uniform pale color.Wings with many cross-veins; costa, subcosta and cross-veins hyaline; veins R, Cu and M brownish. Subgenital plate large and arched.

Larva. General color dark brown. M-line distinct, and paler than the frons. Eyes black with a pale line surrounding margins. Reticulate below the postfrontal suture, and bearing a pale band between the lateral ocelli which separates dark pigment on the occiput. Clypeus brownish and labrum dark brown. Three ocelli totally black. Antenna brown. Mandible with five teeth and numerous bristles on the outer margins at the base. Maxillary palp light brown; lacinia with two teeth and a row of prominent marginal bristles extend for ca. half the lacinial length. Pronotum brown with pale spots forming an ornamental pattern. Legs light brown with brownish spines.

Measurements. Female: total length: 16.79mm; head: 3.33mm; forewing length: 18-19mm; hindwing: 17.00mm. Larva: head: 3.7 x 2.91mm; Pronotum: 4.05 x 2.16mm; Abdomen: 5. 92mm; length total: 14.12mm (n = 118).

Remarks. Despite the large size and form of the female subgenital plate which are similar to those of K. colossica (Navas) and K. gaussu Froehlich ( Froehlich 1988) , these species do not otherwise appear to be closely related. The larvae are somewhat larger than those of K. gracilenta (see above) and are readily distinguished from these and the other known species ( K. neotropica , K. tijucana ) on the basis of color pattern of the head ( Fig. 7 ) and in details of the lacinial bristle arrangement ( Fig. 8 ). The head pattern is generally similar to that of K. tijucana ( Dorvillé & Froehlich 2001) but with more extensive pale areas lateral to the ocelli and the lacinial teeth diverge more strongly and have more uniformly sized marginal bristles than is shown for K. tijucana by Froehlich (1984b).

Distribution. Brazil: São Paulo; Rio de Janeiro; Minas Gerais; Espírito Santo.

Figures

Figs. 4-9. Kempnyia reticulata. 4-6. female. 4. Head and pronotum, dorsal. 5. Sterna 7-10, lateral view. 6. Subgenital plate, ventral. 7-8-9. larva. 7. Head and pronotum. 8. Left maxilla. 9. Left mandible.

Figs. 1-3. Kempnyia gracilenta larva. 1. Head and pronotum, dorsal. 2. Maxilla, dorsal. 3. Mandible, dorsal.