Chimarra oliveri, Pandher & Kaur & Garima, 2020

Pandher, Manpreet Singh, Kaur, Simarjit & Garima, Deepti, 2020, New species, a new name, and new synonyms for Chimarra spp. (Insecta: Trichoptera: Philopotamidae) of India, Zootaxa 4790 (3), pp. 577-585 : 578-579

Chimarra oliveri sp. nov.

( Figs 1–6 )

Material examined. Holotype: Male, India: Arunachal Pradesh; Tuting , 1230 m, 28 ° 59’34.8’’N, 94 ° 53’41.64’’E, 1.xi.2017, Pandher & Pathania (NZC).

Paratype: 1 male, collection data same as of holotype.

Diagnosis. Chimarra oliveri sp. nov. is similar to C. lakwinderae Pandher and Saini 2012b , reported from Uttarakhand. Both of these species have inferior appendages with mesal processes. Chimarra oliveri , in fact, has two such processes; one arising at midlength on the dorsomesal edge and the second beyond midlength on the ventromesal edge. Furthermore, in C. lakhwinderae the sclerotized lateral lobes of tergum X are broad basally and narrow apically, whereas the lateral lobes of tergum X in C. oliveri sp. nov. are finger-like, down curved at 2/3 of their length, just before their blunt apices.

Description, adult male. Color in alcohol dark brown, dorsum of head black, wings fuscous. Body covered with scattered dark brown pubescence. Length, from tip of head to apex of folded forewings, about 6.20 mm; antennae each 4 mm long; maxillary palps each 1.25 mm long with segment III slightly longer than II; labial palps each 0.70 mm long. Length of each forewing 5 mm (n = 2); discoidal cell about 2 times as long as its width. Hind wing length 3.50 mm (n = 2).

Male genitalia ( Figs 1–6 ). Segment VIII relatively elongate, covering almost entire segment IX dorsolaterally. Segment IX short dorsally, longer ventrally; tergum IX reduced to transverse band, produced into pair of small anterior dorsolateral projections; anterior margin concave below these projections; anteroventrally produced; posterolaterally slightly protruding; posteroventral process small. Pair of preanal appendages obliquely placed on posterior dorsolateral margins of segment IX, setose, semicircular in lateral view; protruding knob-like in dorsal view. Inferior appendages longer than tergum X, broad basally, each narrowing toward curved apex; with small hooked projection arising near base from dorsomesal margin, visible in lateral view; second hooked projection arising from ventromedial margin of inferior appendage beyond midlength, visible in ventral view. Tergum X with pair of sclerotized lateral lobes beneath pair of separate projecting mesal lobes; lateral lobes, in lateral view, fingerlike, projecting posterad, down-curved at 2/3 length just before blunt apices; in dorsal view, broad basally, narrow at mid-length, thumb-like at apex; each mesal lobe, in lateral view, directed dorsad basally, broad to midlength then slightly constricted and curved posterad, narrow towards rounded apices; in dorsal view, arising from common base, divergent to midlength, then convergent and apicomesally pointed. Sclerotized phallobase rounded basally and tubular in apical of 2/3; length of retracted endotheca membranous and retracted into tubular phallobase, two lateral rows of very small comb-like spines visible in ventral view.

Distribution. India: Arunachal Pradesh.

Etymology. This species is dedicated to Dr. Oliver S. Flint, Jr., for his lifelong contributions to Trichoptera taxonomy and his ever-helping hand to young taxonomists.

Chimarra subpositio , NOMEN NOVUM

Chimarra bicolor Navás 1932 , 23–26, f 29

Chimarra bicolor Navás 1932 , from India, is a junior secondary homonym, preoccupied in Chimarra by Chimarra bicolor (Banks 1901) . Chimarra bicolor (Banks) was originally described as a species of genus Philopotamus but was transferred to genus Chimarra (as Chimarrha ) by Ulmer (1957). Therefore, Navás’ species name must be replaced.

Etymology: The new species name is a Latin feminine noun subpositio , meaning “substitution,” used in apposition to the noun Chimarra and referring to its role as a substitute for Navás’ name.

Figures

FIGURES 1–6. Chimarra oliveri sp. nov., male genitalia. 1, left lateral; 2, dorsal; 3, tergum VIII dorsal; 4, right inferior appendage, ventral; 5, phallus, left lateral; 6, phallus, ventral.