Nine new species of Enithares (Heteroptera: Notonectidae) from New Guinea, with distributional notes on other species and an updated world checklist
Author
Polhemus, Dan A.
text
Zootaxa
2020
2020-05-07
4772
1
132
182
journal article
22330
10.11646/zootaxa.4772.1.5
b14b0d0d-cf67-4895-965c-12792c622b21
1175-5326
3814079
B497198A-08CD-4A21-AE04-14390499853B
Key to males of the species of
Enithares
occurring on New
Guinea
and nearby islands
1. Paramere large and well-developed, reaching to or exceeding dorsal margin of posterior lobe of pygophore (
Figs. 16–21
,
35–38
); posterior lobe (PL) of pygophore erect, truncate, bearing a small apical notch anterodorsally (
Figs. 16–21
,
35–38
); lateral arms of the basal plate (LABP) elongate and modified distally (
Figs. 16–21
,
35–38
).............(
E. atra
group) ... 2
- Paramere small or vestigial (
Figs. 39, 40
,
49–54
); PL rounded or angular, without an anterodorsal notch (
Figs. 39, 40
,
49–54
); LABP shorter, stouter (
Figs. 39, 40
,
49–54
)................................................................ 11
2. Body length exceeding
12 mm
(
Figs. 28, 29
,
31, 32
)......................................................... 3
- Body length distinctly less than
12 mm
.................................................................... 4
3. LABP tapering distally, apex slightly hooked (
Fig 37
); central New
Guinea
mountains........................
E. stylata
- LABP expanded distally, apex truncate (
Fig 21
); Papuan Peninsula...................................
E. peninsularis
4. LABP slender on distal half, with apex acute or slightly secondarily expanded (
Figs. 18, 19
,
36
)....................... 5
- LABP stout on distal half, apex blunt or broadly flared (
Figs. 16, 20
,
35
)......................................... 9
5. Distal section of LABP tapering throughout its length, apex slender and acuminate (
Fig. 36
); central mountains of western New
Guinea
.........................................................................................
E. ziwa
- Distal section of LABP not tapering as strongly as above, apex rounded or bluntly angled (
Figs. 17–19
)................. 6
6. Anterior width of vertex less than length of head; distal section of LABP slender, apex rounded (
Figs. 17, 18
)............ 7
-
Anterior width of vertex greater than length of head; distal section of LABP thicker than above (
Figs. 19
,
38
)............ 8
7. Apex of LABP expanded and bulb-like (
Fig. 18
); ventral margin of proctiger broadly curved (
Fig. 18
); D’Entrecasteaux Islands.......................................................................................
E. insularis
- Apex of LABP rounded, weakly expanded, not bulb-like, curving slightly upward (
Fig. 17
); ventral margin of proctiger angular (
Fig. 17
); southern Papuan Peninsula..................................................................
E. atra
8. LABP with apex forming a truncate upturned angle (
Fig. 19
); Mt. Bosavi, southeastern New
Guinea
.............
E. bosavi
- Apex of LABP curving gently downward (
Fig. 38
); Louisiade Archipelago.................................
E. tagula
9. Distal section of LABP with apex expanded to varying degrees (
Figs. 16
,
35
); northeastern New
Guinea
............... 10
- Distal section of LAPB of relatively even width throughout, apex truncate (
Fig. 20
); southeastern New
Guinea
or Waigeo Island............................................................................................... 11
10. Apex of LABP highly expanded, flaring and bi-angular (
Fig. 35
)........................................
E. elongata
- Apex of LABP not so strongly expanded as above, not bi-angular (
Fig. 16
).................................
E. orsaki
11. Ventrolateral angle of pygophore produced and acute; posterior margin of PL angled anteriorly; Waigeo Island....
E. digitata
- Ventrolateral angle of pygophore obtuse, not produced (
Fig. 20
); posterior margin of PL nearly vertical (
Fig. 20
); southeastern New
Guinea
...................................................................................
E. papua
12. Dorsal apex of PL bearing stout, spine-like setae (
Figs. 39, 40
)................................ (
E. bakeri
group) ... 13
- Dorsal apex of PL lacking stout, spine-like setae (
Figs. 49–54
)............................. (
E. megalops
group) ... 14