Grumichella blahniki

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: 147-148

publication ID 10.1111/zoj.12310

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scientific name

Grumichella blahniki



Diagnosis: Grumichella blahniki   can be diagnosed by the following characters: male forewings with 12 brown spots; male genitalia bearing segment X not flattened, lateral view; 1st article of inferior appendage with well-developed basomesal protuberance; 2nd article of inferior appendage shorter than the apicodorsal portion of 1st first article; apex of 2nd article pointed, curved mesad; Cu1a and M3+4 veins fused before the border in male hind wings. It is most similar to G. cressae   sp. nov., except for having tergum IX without protuberances dorsally, and segment X with the posterolateral borders not developed.

Adult: Head and body yellowish brown.

Male: Forewing length: 10–12 mm. Forewing light golden brown, with 12 small brown spots. Male genitalia as in Figure 7. Abdominal segment IX annular; in dorsal view, with anterior margin nearly straight, posterior margin broadly rounded; in lateral view, pleural region setose; tergum IX without protuberances dorsally. Preanal appendage setose, at least 4× as long as wide; in lateral view, digitate, apex subacute. Segment X saddle-shaped; in lateral view not flattened, dorsal margin slightly concave, apex upcurved, ventral margin abruptly convex; with posterolateral borders not developed, lateral margins subparallel after 1/3 length, with apicodorsal shelf, shelf rounded or almost rectangular, almost as wide as apex of segment X, with ventral sulcus apically. Inferior appendage slightly concave 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 shorter than apicodorsal portion of 1st article, broad, tapering throughout end, mesal surface not excavate, apex pointed, slightly curved mesally; apicordorsal portion of 1st article digitate, setose. Phallic apparatus simple, phallicata slightly down-curved; with pair of subequal, wide, posterodorsally directed lateral flanges, apices not acuminate; phallotremal sclerites small, U-shaped in dorsal view.

Female: Head and body yellowish. Forewing length: 6–8 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, ap- pendages of segment X small; valves flat, thin, lightly sclerotized, with very short setae.

Etymology: The specific epithet is in honor of Dr Roger Blahnik for his dedication to Neotropical caddisflies.

Distribution: Peru.

Holotype, male: PERU: Paucartambo : Pte. San Pedro, c. 50 km NW Pilcopata, el. 1600 m, 2–3.ix.1988, O.S. Flint Jr and N. Adams ( NMNH).  

Paratypes: same data as holotype, 6 males ( NMNH)   , 2 males ( UFBA)   , 2 males ( UMSP)   .


Smithsonian Institution, National Museum of Natural History


University of Minnesota Insect Collection