Grumichella leccii, Calor, Adolfo R., Holzenthal, Ralph W. & Froehlich, Claudio G., 2016

Calor, Adolfo R., Holzenthal, Ralph W. & Froehlich, Claudio G., 2016, Phylogeny and revision of the Neotropical genus Grumichella Müller (Trichoptera: Leptoceridae), including nine new species and a key, Zoological Journal of the Linnean Society 176 (1), pp. 137-169 : 152-153

GRUMICHELLA LECCII CALOR & HOLZENTHAL SP. NOV. ( FIG. 11 )

Diagnosis: Grumichella leccii can be diagnosed by the following characters: male forewings with 3 brown spots; male genitalia bearing segment X flattened, lateral view; 1st article of inferior appendage bearing a small basomesal protuberance; 2nd article longer than apicodorsal portion of 1st article, narrow, tapering throughout length, apex pointed, curved mesally; larval abdominal sternum I with 16–24 setae. It is most similar to G. rostrata , except for 2nd article of inferior appendage which is longer than the apicodorsal portion of 1st article, and segment X with small sulcus apically.

Adult: Head and body yellowish brown.

Male: Forewing length: 7–9 mm. Forewing light golden brown, with 3 small brown spots, without dark setae on posterodorsal margin. Male genitalia as in Figure 10 . Abdominal segment IX annular; in dorsal view, with anterior margin slightly concave, posterior margin sinuate; in lateral view, pleural region sparsely setose; tergum IX without protuberances dorsally. Preanal appendage setose, at least 4× as long as wide; in lateral view, clavate, apex rounded. Segment X saddleshaped; in lateral view flattened, dorsal margin slightly concave, apex upcurved, ventral margin abruptly convex; segment X in dorsal view, subtriangular, with posterolateral borders developed, lateral margins sinuate, narrowing apically, with apicodorsal shelf, shelf almost rectangular, 1/2 as wide as apex of segment X, with ventral sulcus apically. Inferior appendage nearly straight in ventral view, with basal region tuboid, not enlarged; rounded basally, heavily setose, bearing a small basomesal protuberance; middle region of inferior appendage with constriction before apicodorsal region; 2nd article longer than apicodorsal portion of 1st article, narrow, tapering throughout length, mesal surface not excavate, apex pointed, curved mesally; apicordorsal portion of 1st article digitate, setose. Phallic apparatus simple, phallicata slightly down-curved; with pair of subequal, narrow, posteromesally directed lateral flanges, apices not acuminate; phallotremal sclerites small, U-shaped in dorsal view.

Female: Head and body yellowish. Forewing length: 6–7 mm. Forewing yellowish to brown, without dark setae on posterodorsal region. Genitalia inseparable from congeners. Abdominal segment IX lightly sclerotized, with dorsal plate, bearing pair of setose protuberances above appendages of segment X, appendages of segment X small; valves flat, thin, lightly sclerotized, with very short setae.

Larva: Length of larva 6–8 mm. Abdominal sternum I with 16–24 setae. Lateral hump sclerite relativally large.

Larval case: Length 7–10 mm; constructed of rings of transparent silk, nearly straight, tapered, narrow, without diagonal sutures (or sutures indistinct), posterior end with ventral, dorsally directed projection, visible externally, posterior aperture C-shaped.

Pupa: Segment IX very slender; anal process long, narrow, slender, unpigmented or slightly yellowish. Without dark setae. Apically upturned, hooked.

Pupal case: With anteroventral silken pedicel, pedicel very long, thin; anterior silken membrane with an eccentric, horizontal, slit-like opening.

Etymology: Named in honour of Dr Lucas Silveira Lecci (Instituto Federal do Mato Grosso, Brazil), collector of this species, and also for his friendship and collaboration in the field.

Distribution: Brazil.

Holotype, male: BRAZIL: São Paulo: Jundiai, Serra do Japi , P.A. 11, stream before reservoir, 23°14′30″S, 46°57′16″W, 27.iii.2007, luz UV & branca, Calor A.R., Mariano R. & Lecci L.S. ( MZUSP).

Paratypes: Same data as holotype, except 5 males ( MZUSP) , 5 males ( UMSP) ; 27 males ( UFBA) ; same data except Córrego da Ermida and small dam, 9.xii.1997, Froehlich C.G., 23°13′S, 46°56′W, 2 males ( UMSP) ; same data, except Córrego da cachoeira Paraíso, 26.iii.2007, luz UV & branca, 23°14′S, 46°56′W, Calor A.R., Mariano R. & Lecci L.S., 1 male ( UFBA) .

Additional material: Same data as holotype, except 5 males, 5 females ( UMSP) , 27 males, 49 females ( UFBA) ; same data, except Córrego da Ermida and small dam, 9.xii.1997, Froehlich C.G., 23°14′S, 46°56′W, 2 females ( UMSP) ; same data, except riacho trilha da cachoeira Paraíso , 25.i.2007, luz, 23°14′30″S, 46°57′13″W, Lecci L.S., Nascimento E. & Polegatto C., 1 female ( MZUSP) ; same data, except 2° riacho trilha da cachoeira Paraíso , 22.ii.2007, luz, 23°14′30″S, 46°57′13″W, Lecci L.S. & Nascimento E., 1 female ( MZUSP) ; same data, except 2° riacho trilha da cachoeira Paraíso , 22.ii.2007, luz, 23°14′30″S, 46°57′13″W, Lecci L.S. & Nascimento E., 1 female ( MZUSP) ; same data, except Córrego da cachoeira Paraíso, 26.iii.2007, luz UV & branca, 23°14′S, 046°56′W, Calor A.R., Mariano R. & Lecci L.S., 3 females ( UFBA) ; same data, except P.A. 11, stream before the reservoir, 23°14′30″S, 46°57′15″W, el. 1022 m, 11.iii.2008, rede D, Lecci L.S. & Nascimento E., 21 pupae ( UFBA) .

Figures

Figure 10. Grumichella jureia, male. A, genitalia, lateral view. B, genitalia, dorsal view. C, phallus, lateral view. D, in- ferior appendage, ventral view.

Figure 11. Grumichella leccii, male. A, genitalia, lateral view. B, genitalia, dorsal view. C, phallus, lateral view. D, inferior appendage, ventral view.