Janohyphella Selvakumar, Sivaramakrishnan & Jacobus

Selvakumar, C., Sivaramakrishnan, K. G., Jacobus, Luke M., Janarthanan, S. & Arumugam, M., 2014, Two new genera and five new species of Teloganodidae (Ephemeroptera) from South India, Zootaxa 3846 (1), pp. 87-104 : 88-89

publication ID	https://doi.org/ 10.11646/zootaxa.3846.1.4
publication LSID	lsid:zoobank.org:pub:1504C2B6-221E-4B7E-928B-3C5E78004C97
DOI	https://doi.org/10.5281/zenodo.6125811
persistent identifier	https://treatment.plazi.org/id/C5297D5A-FF8A-FFFA-1CE6-6649160CFA59
treatment provided by	Plazi
scientific name	Janohyphella Selvakumar, Sivaramakrishnan & Jacobus
status

Treatment

Janohyphella Selvakumar, Sivaramakrishnan & Jacobus , n. gen.

Figs. 2–20 View FIGURES 2 – 13 View FIGURES 14 – 20 .

Type species: Janohyphella indica Selvakumar, Sivaramakrishnan & Jacobus , n. sp.

Description. Larva ( Fig. 2 View FIGURES 2 – 13 ).

Head: Outer margin of head fringed with row of simple setae from behind eyes to labrum insertion ( Fig. 3 View FIGURES 2 – 13 ). Labrum short and broad; width less than 3 times length; distal margin broadly emarginate, with dense, fine, moderately long feathered setae; dorsal surface with scattered simple setae forming irregular row ( Fig. 4 View FIGURES 2 – 13 ). Hypopharynx with lingua and superlinguae subequal in length; lingua distally somewhat truncate to slightly coneshaped, not notched at apex; superlinguae broadly rounded distally ( Fig. 5 View FIGURES 2 – 13 ). Mandibles narrow, outer incisors separate and divergent; inner incisor of left mandible pointed, that of right mandible absent; with sparse mediolateral setae; otherwise with many slender long hair-like setae evenly distributed ( Figs. 6, 7 View FIGURES 2 – 13 ). Maxillae slender, with well-developed canine and two dentisetae; two clusters of long setae apically; inner margin smooth; outer margin at base with minute hairs laterally; maxillary palp reduced to articulated palp ( Fig. 8 View FIGURES 2 – 13 ). Labial palp segment 3 reduced in size; with relatively well-developed glossae and paraglossae; paraglossae somewhat bluntly pointed medioapically ( Fig. 9 View FIGURES 2 – 13 ). Submentum evenly rounded and lateral margin with sparse row of fine, short, hair-like setae.

Thorax: Prosternum without medial, bilobular, spiny process ( Fig. 3 View FIGURES 2 – 13 ) (see Fig. 65 View FIGURES 59 – 71 of McCafferty & Wang (1997) for prosternum with medial, bilobular, spiny process). Forefemur very broad and without transverse row of setae ( Fig. 10 View FIGURES 2 – 13 ); midfemur broad with transverse row of spatulate setae ( Figs. 11, 12 View FIGURES 2 – 13 ); hindfemur slender and without transverse row of setae ( Fig. 13 View FIGURES 2 – 13 ). Tarsal claws sharply curved, without denticles. Forewing pads with slight basal fusion ( Fig. 14 View FIGURES 14 – 20 ).

Abdomen: Gills I small, single, two segmented and fibrilliform ( Fig. 14 View FIGURES 14 – 20 ); lamellate gills on abdominal segments II–V ( Figs. 15–18 View FIGURES 14 – 20 ); gills II operculate, appearing broadly rounded with median horizontal cleft on dorsal lamella ( Fig. 15 View FIGURES 14 – 20 ). Terga with two small tubercles separated by concave margin on segmentsII–VIII ( Figs. 2 View FIGURES 2 – 13 , 19, 20 View FIGURES 14 – 20 ), and with posterolateral processes well-developed on segments II–IX but not segment III ( Fig. 20 View FIGURES 14 – 20 ). Caudal filaments banded, fringed with lateral hairs. Median caudal filament length subequal to cerci.

Winged stages. Unknown.

Etymology. Janohyphella , n. gen., is an arbitrary combination of letters, with reference to Dr. Janice Peters, in honour of her significant contribution to the study of Oriental Ephemeroptera .

Diagnosis. Janohyphella , n. gen., can be distinguished from all other genera of the Teloganodidae by the following combination of characters. In the larvae: (1) no reduction of median caudal filament ( Fig. 2 View FIGURES 2 – 13 ); (2) single, fibrilliform gills on abdominal segment I coupled with presence of lamellate gills on abdominal segment II–V ( Figs. 14–18 View FIGURES 14 – 20 ); (3) terga with two small tubercles separated by concave margin on segments III–VIII and with posterolateral processes well developed on segments II–IX, remarkably absent on segment III ( Figs. 19, 20 View FIGURES 14 – 20 ); (4) only midfemur has a transverse row of setae ( Fig. 12 View FIGURES 2 – 13 ); (5) tarsal claws sharply curved, without denticles ( Fig. 13 View FIGURES 2 – 13 ) and (6) mandible with sparse medio-lateral cluster of setae ( Figs. 6, 7 View FIGURES 2 – 13 ).

Janohyphella , n. gen., is similar to the genus Manohyphella , but the new genus can be distinguished from it (see McCafferty & Benstead, 2002) by the following combination of characters in the larva: (1) terga with two small tubercles separated by concave margin on segments III–VIII and with posterolateral processes well developed on segments II–IX except segment III ( Figs. 19, 20 View FIGURES 14 – 20 ); (2) transverse row of setae only in midfemora ( Fig. 12 View FIGURES 2 – 13 ); (3) tarsal claws sharply curved, without denticles ( Fig. 13 View FIGURES 2 – 13 ) and (4) mandible with relatively sparse mediolateral setae ( Figs. 6, 7 View FIGURES 2 – 13 ).

Species Composition.

Janohyphella indica Selvakumar, Sivaramakrishnan & Jacobus , n. sp. ( India)

Distribution. India (restricted to the Western Ghats).