Taxonomic revision of Teleogryllus mitratus (Burmeister, 1838) and T. occipitalis (Serville, 1838) in India, withthe description of Teleogryllus rohinae Jaiswara & Jain sp. nov. and a key for Teleogryllus species from India (Orthoptera: Gryllidae)
Author
Jaiswara, Ranjana
Department of Biological Sciences, Indian Institute of Science Education and Research Mohali 140306, Punjab, India. & Present Address: Department of Zoology, Panjab University, Chandigarh, 160014, India.
Author
Desutter-Grandcolas, Laure
Institut de Systématique, Évolution, Biodiversit, ISYEB, Museum national d’histoire naturelle, Sorbonne université, CNRS, UPMC, EPHE, Université de Antilles, CP 50, 57 rue Cuvier 75231 Paris Cedex 05, France.
Author
Jain, Manjari
Department of Biological Sciences, Indian Institute of Science Education and Research Mohali 140306, Punjab, India.
text
Zootaxa
2021
2021-08-04
5016
1
81
106
journal article
10.11646/zootaxa.5016.1.3
1175-5326
5221842
F0DA73A8-E6EE-4A64-873C-964D8F25670B
Genus
Teleogryllus
Chopard, 1961
Teleogryllus
Chopard, 1961: 277
—
Otte and Cade 1983: 104
.
Type
species:
Gryllus posticus
Walker, 1869
by original designation.
Distribution:
Genus widespread in the Paleotropics and Oceania.
Diagnosis:
See
Otte & Cade (1983)
and
Desutter-Grandcolas
et al
. (2016)
.
Emended description:
Species medium to large, with general coloration brown to black-brown.
Head.
Head slightly narrowing or almost of pronotum width. Dorsum and vertex rounded; eyes large but not protruding; lower margin of eyes and antennal pit at the same level. Median ocellus apical and D shaped, lateral ocelli rounded; dis-
tance between lateral ocelli twice as between median and lateral ocellus. Scape wider than long; fastigium almost two times scape width. Clypeo-frontal suture almost straight in line. Maxillary palpus with 3
rd
and 4
th
articles almost equal in length; 5
th
article longest, dorsal margin concave and obliquely truncated from one-third of its length (
Fig. 2C
,
3C
,
4C
).
Pronotum.
DD very transverse; anterior margin concave and posterior margin convex (
Fig. 2A
,
3A
,
4A
); LL rectangular, ascending posteriorly (
Fig. 2B
,
3B
,
4B
).
Legs.
TI with three apical spurs; inner tympanum small and rounded; outer tympanum well-developed, oval-shaped. TII with four apical spurs. TIII with three pairs of inner and outer apical spurs, outer apical spurs smaller, median spur longest on both sides; tibia with five to seven (usually five or six) inner and four to eight (usually six to eight) outer subapical spurs; inner subapical spurs bent distally; inner and outer subapical spurs facing each other, not alternate. Basitarsomere III with two short rows of small spines. FWs present in both sexes. HWs variable.
Color.
Body black-brown to dark brown. The yellow band on inner margins of eyes either present or completely absent; when present, the band width varying from a very thin line to a thick band extended to superior margins of the eyes (
Fig. 10D, H, L
). Ocelli yellow; scape, frons, and cheeks yellow to brown; maxillary palpi yellow to brown, uniform color (except in
T. bicoloripes
); lateral ocelli connected with yellow line. Legs yellowish to brown. Tergites brown to dark brown, sternites light brown, and distally dark brown. FWs mostly light brown with anal and chord area more pigmented; humeral region often yellow in both males and females.
Male.
Metanotum without glandular structures, as in all
Gryllinae
. FW and HW length variable, ranging from short to long, extended beyond the last tergite. Anal field slightly bulged dorsally. Venation: stridulatory apparatus always present on PCu, with two to six oblique veins in harp; mirror most often present, somewhat rounded or quadrangular, most often crossed by one vein; chord veins regularly spaced; diagonal vein almost straight to slightly convex; apical field short to long; lateral field very high with 11–14 somewhat oblique veins (much less in shortwinged species). Subgenital plate longer than wide, high in lateral view; supra-anal plate wider than long, distal margin round or rather square-shaped.
Male genitalia.
Pseudepiphallic sclerite long and narrow, broadly triangular, with a long median process and two short lateral ones; median process either acute or wide in dorsal view; pseudepiphallic apodemes long, sometimes slightly twisted along the length; pseudepiphallic parameres elongate, sclerotized on inner and outer margins, their apex acute; rami straight to strongly convex, not fused distally. Ectophallic fold long and thin. Dorsal cavity high, not twisted.
Female.
FW and HW length variable ranging from very short to long; FWs overlapping. FWs with diagonally parallel longitudinal veins on the dorsal side. Subgenital plate with concave posterior margin. In the specimens observed, ovipositor most often shorter than body length; valves slightly widened apically.
Female genitalia.
Copulatory papilla long, with variable ring-shaped sclerotization (see
Fig. 11
).
Remarks:
Teleogryllus
is presently subdivided into five subgenera based on the shape of pseudepiphallic parameres of the male genitalia (
Cigliano
et al.
2021
). These are
Afroteleogryllus
Gorochov, 1988
(apex of parameres long, thin and acute:
Gorochov 1988
, fig. 78),
Brachyteleogryllus
Gorochov, 1985
(parameres short and thick with wide apex thinner apically than basally:
Gorochov 1988
, fig. 81),
Macroteleogryllus
Gorochov, 1985
(parameres short and convex, the apex regularly thinner apically:
Gorochov 1988
, fig. 80),
Teleogryllus
Chopard, 1961
(parameres long, regularly narrowed toward apex:
Gorochov 1988
, fig. 79), the nominal subgenus, and
Cryncoides
Gorochov, 1988
(
Otte 1994
)
. Preliminary phylogenetic analyses using COI sequences recover the subgenera
Brachyteleogryllus
and
Macroteleogryllus
(
Lu
et al.
2018
). In the present study, species recorded from
India
are classified either within
Macroteleogryllus
(
T. mitratus
),
Brachyteleogryllus
(
T. occipitalis
,
T. rohinae
Jaiswara & Jain
,
sp. nov.
) or the nominal subgenus (other species) (M. Jain and R. Jaiswara, in prep.).