Chimarrhodella paria, Blahnik, Roger J., 2004

Blahnik, Roger J., 2004, New species of Chimarrhodella from Venezuela and Ecuador (Trichoptera: Philopotamidae), Zootaxa 552, pp. 1-7: 4-6

publication ID

http://doi.org/ 10.5281/zenodo.157673

publication LSID

lsid:zoobank.org:pub:FD75638A-4268-4548-A4AF-1D6C1AA5CE84

persistent identifier

http://treatment.plazi.org/id/03E787FD-FFD5-3B7D-7A64-FDE6FD34FE11

treatment provided by

Plazi

scientific name

Chimarrhodella paria
status

new species

Chimarrhodella paria  , new species

( Fig. 2View FIGURE 2 A –D)

This species is a very close sister species to Chimarrhodella nigra Flint. The  male shares with that species an elongate narrow tergum X with an upturned dorsomesal spinelike process, and like both C. nigra  and C. tobagoensis  (and also C. ornata  , n. sp.) lacks phallic spines. It can be distinguished from C. nigra  by the position of the spine on tergum X, which emerges from the middle of the segment, rather than the base, and by the shape of the hooklike posterodorsal processes of tergum IX, which are basally enlarged and narrow apically. Additionally, it differs from C. nigra  in coloration. Chimarrhodella nigra  is uniformly black in color, whereas C. paria  , while being generally black or blackish overall, has the antennae and legs paler. No structural differences were observed to separate females of C. paria  from either C. nigra  or C. tobagoensis  , and consequently the female of C. paria  was not figured. The female of C. tobagoensis  was figured by Blahnik and Holzenthal, 1992, figs. 16 A, B. All of these species, however, are separable by their coloration, black overall in C. nigra  , black with paler antennae and legs in C. paria  , and pale stramineous overall in C. tobagoensis  . Specimens of Chimarrhodella tobagoensis  also differ in being considerably smaller in size.

Adult. Forewing length: male 5.2­6.8 mm, female 6.0­ 7.2 mm. General color, dark brown, head blackish; frontal setal wart, palps and femora yellowish, associated setae yellowish­brown or golden; crossveins of forewing chord white; head elongate, flattened, ocelli distinct.

Male. Segment IX very short ventrally; anterolateral margin slightly concave; posterior margin with subacute, setose dorsolateral expansions, extending nearly linearly to ventral margin; Posterodorsal margin with paired, hooklike processes, each with basal part enlarged and apex much narrowed; ventral process absent. Tergum X narrow, elongate, divided apically, lateral margins sensillate; tergum mesally with upturned spinelike process emerging near middle of segment. Preanal appendages narrow, elongate, subequal in length to tergum X. Inferior appendage elongate, linear; as viewed ventrally, narrowed and slightly mesally curved in distal half. Phallic apparatus: phallobase tubular with basodorsal expansion, apicoventral margin acute and downcurved; endotheca without spines, membranous hoodlike apicodorsal expansion present; internally with short pleated membrane basally and moderately distinct apicoventral phallotremal sclerite.

Female. Genitalia diagnostically indistinguishable from C. tobagoensis  ( Blahnik and Holzenthal, 1992, figs. 16 A, B).

Holotype male ( UMSP 000048319): VENEZUELA: Sucre: Peninsula de Paria  , Santa Isabel, Río Santa Isabel, 10 ° 44.294 'N, 62 ° 38.954 'W, el 20 m, 4.iv. 1995, Holzenthal, Flint, Cressa ( UMSP).

Paratypes: VENEZUELA: Sucre: same data as holotype— 3 males, 5 females ( UMSP); Peninsula de Paria  , Puerto Viejo, "Río el Pozo", 10 ° 43.073 'N, 62 ° 28.569 'W, el 20 m, 3.iv. 1995, Holzenthal, Flint, Cressa— 2 males, 5 females ( UMSP); Peninsula de Paria  , Puerto Viejo, Río Puerto Viejo, 10 ° 43.137 'N, 62 ° 28.743 'W, el 15 m, 2.iv. 1995, Holzenthal, Flint, Cressa— 12 males, 2 females ( UMSP, NMNH, IZAM).

Etymology. This species is named paria  for the Peninsula de Paria  in Venezuela where the type series was collected.

UMSP

University of Minnesota Insect Collection

NMNH

Smithsonian Institution, National Museum of Natural History