A review of the genus Paragnia Gahan, 1893 (Coleoptera: Cerambycidae: Lamiinae: Lamiini)
Author
Huang, Gui-Qiang
School of Biological Science and Technology, Liupanshui Normal University, Liupanshui 553004, Guizhou, China. & hgqnasa @ 163. com; https: // orcid. org / 0000 - 0002 - 0063 - 8157
Author
Li, Song
School of Biological Science and Technology, Liupanshui Normal University, Liupanshui 553004, Guizhou, China. & 1758752216 @ qq. com; https: // orcid. org / 0000 - 0002 - 9951 - 3134
Author
Zhang, Gui-Mei
text
Zootaxa
2020
2020-05-13
4778
1
159
170
journal article
22202
10.11646/zootaxa.4778.1.6
c27641c4-c16c-4ac8-a677-6c71331bd299
1175-5326
3823784
684FF0F2-87D7-4D8B-A969-E4A8DD7C93D1
Paragnia
Gahan, 1893
ḦĦK+¤
Paragnia
Gahan, 1893: 384
;
Aurivillius, 1922: 121
;
Breuning, 1961: 341
;
Rondon & Breuning, 1970: 445
;
Löbl & Smetana, 2010: 284
;
Kariyanna
et al
., 2017: 164
;
Lin & Yang, 2019
.
Type
species:
Paragnia fulvomaculata
Gahan, 1893
.
Describing
Paragnia
Gahan (1893)
mentioned some important characteristics to identify the genus: apical cicatrix of antennal scape opened, antennomere III distinctly thickened, and mesoventral process with a feeble tubercle. With the description of a new
Paragnia
species, the genus needs to be redescribed.
Redescription.
Mandibles black at apical half and reddish-brown at base (
Figs 7, 9
,
30
). Head covered with an oblique yellow setal band strating below lower eye lobes and extending to posterior genal base (
Figs 7, 9
,
30
). Antennomere III (except for base) moderately covered with dense short black setae; antennomeres V–X (except for apex) and antennomere XI with moderately dense short light-yellow setae; antennomeres V–X with sparse shortblack setae at apex (
Figs 1–6
,
24–25
,
27–29
); antennomeres IV–XI with sparse semi-erect short brown setae. Prothorax with several erect long black setae dorsally and laterally. Elytra glossy and sparsely covered with semi-erect short black setae (each seta located in a sub-rounded puncture), dorsally with an oblique yellow setal band on the basal middle, a yellow setal mark (a band or several spots) on the basal 1/3 close to suture, and three irregular yellow setal spots from middle to apex: the first one located on center, the second located near the apical 1/4 and close to suture, and the third one located near the apical 1/8 and close to suture (
Figs 1, 4
,
24
,
27
); side of each elytron covered with a yellow setal band at base, an irregular yellow setal spot on the basal 1/4, and three irregular yellow setal spots from middle to apex: the first one located on center, the second located near the apical 1/4, and the third located near the apical 1/8 (
Figs 3, 6
,
29
). Hind wings brown (
Figs 11
,
26
,
32
). Metaventrite, urosternites and legs sparsely covered with short grayish white setae (
Figs 2, 5
,
25
,
28
); urosternites with several semi-erect brown and black setae.
Frons, genae and vertex strongly wrinkled and sparsely covered with rounded punctations; eyes coarsely faceted (
Figs 1, 4
,
7, 9
,
24
,
27
,
30
); antennal tubercles strongly raised and close to each other, with dense fine punctations (
Figs 7, 9
,
30
); antennae longer than body, scape slightly flat and gradually expanded from base to apex, apical cicatrix of scape open (
Figs 1, 4
,
24
,
27
); antennomeres III–IV strongly thickened (except for base); antennomere III slightly curved towards inner side and more thickened than antennomere IV (
Figs 1, 4
,
24
,
27
); vertex densely covered with fine punctations behind the upper lobe of eyes, with sparse fine punctations on the middle and on apex. Prothorax sub-cylindrical, expanded at lateral middle; disc wrinkled and with sparse fine punctations, slightly raised near basal middle (
Figs 8, 10
,
31
); prosternal process narrow and distinctly lower than procoxae (
Figs 2, 5
,
25
,
28
); procoxal cavities closed posteriorly and triangular externally. Scutellum lingulate and nearly glabrous. Elytra distinctly broader than prothorax basally, gradually tapered posteriorly and rounded apically; disc with coarse dense punctations on basal 2/3, punctations gradually sparser and smaller from base to apex (
Figs 1, 4
,
24
,
27
).
Some veins of hind wings reduced, AA
3+4
and Cu fused at the apical 2/5; CuA
2
, MP
4
and MP
3
dissociate, MP
4
longer than MP
3
and CuA
2
, MP
3
longer than CuA
2
; MP
3+4
short and dissociate; MS not reaching the margin (
Figs 11
,
26
,
32
). Mesoventral process longitudinally raised at center, midcoxal cavities open externally to mesepimeron. Femora fusiform, apex of hind femora distinctly not reaching the urosternite V (
Figs 2, 5
,
25
,
28
). Tarsi tetramerous.
Male terminalia.
Tergite VIII transverse, sparsely covered with short brown setae dorsally, with several slightly long dark brown setae apically, and a median longitudinal glabrous region; tergite VIII sparsely covered with short brown setae at sides ventrally and with moderately dense short brown setae and sparse long brown setae apically (
Figs 12–13
,
33–34
). Venter of sternite VIII sparsely covered with short brown setae at middle sides, with a piece of longitudinally glabrous section in middle (
Figs 13
,
34
). Parameres sparsely covered with short thick brown setae laterally and several long thick brown setae at apex, venter of parameres with short sparse fine brown setae, slightly dense at basal insides; both parameres unequal in length, gradually tapered from base to apex, closed to each other and rounded apically, bases of parameres separated and only connected through a membrane; both struts of the anterior tegminal strut separated and only connected through a membrane (
Figs 17–19
,
38–40
). Penis strongly curved in lateral view; dorsal plate shorter than ventral plate and rounded apically; ventral plate wider than dorsal plate near apex and rounded apically; dorsal struts about 0.5 time as long as entire penis and rounded apically (
Figs 20–22
,
41–43
).
Diagnosis.
When describing the genus,
Gahan (1893)
did not compared
Paragnia
with other genera.
Rondon & Breuning (1970)
provided a key to genera of
Agniini
(a junior synonym of
Lamiini
), including
Paragnia
and other 48 genera. Although many characters were provided for
Paragnia
in the key, we thought only three characters are reliable to identify the genus: apical cicatrix of scape open, antennomere III distinctly longer than antennomere IV, and pronotum without lateral spines. A very important characteristic to recognize the genus was not mentioned in the key, antennomeres III–IV strongly thickened.
Paragnia
is similar to
Agniomorpha
Breuning, 1935 (Lamiini)
in body shape, color, genae with a pair of oblique yellow setal bands and elytra with yellow setal spots.
Paragnia
can be distinguished from
Agniomorpha
by antennomeres III–IV strongly thickened (not strongly in
Agniomorpha
) and prothorax without lateral tubercles (with lateral tubercles in
Agniomorpha
).
Range.
China
,
India
,
Laos
,
Vietnam
(
new country record
).