Benthalia carbonaria group species from Hainan Island. China:

In BOLD Bin: BOLD:ACD8351

Based on two incomplete adult males.

Color:  Thorax dark brown, abdominal segments largely dark brown with a narrow darker band at the posterior margin of most segments, legs apparently yellowish.
AR and LR1 not known. Wing length 2.66-3.00 mm., width 0.63-0.70 mm; VR about 1 (0.99); 18 setae in squamal fringe, 2-3 SCf on brachiolum.
Head: Antennae missing on both specimens; frontal tubercles 40 x 20 µm; palpal proportions (µm) 21.5 : 24 : 59 : 121.
clyeus width about 0.97 the diameter of the antennal pedicel; 12 -18 clypeal setae.
Thoracic setae - 1-2 acrostichals as common for the genus; 11-12 dorsocentrals; 5 prealars; 1 supraalar; scutellar with setae in 2 rows, 7-12(?) in anterior row, 11-13 inposterior row.
Legs: Lengths and proportions (micron):
 
Fe
Ti
Ta1
Ta2
Ta3
Ta4
Ta5
LR
F/T
PI
940
763
-
-
-
-
-
-
1.24-1.28
PII
998
905
512
278
210
120
118
0.59
1.12
PIII
1050
1115
800
425
330
180
135
0.70-0.73
0.92-0.96

Abdomen darkened at least to some extent; 4 setae along the mid-line of tergite IX and a lateral seta on each side at the base of the anal point.
Superior volsella not like any of the Strenzke 1959 types, with the base extending distally, from the top of which the long, curved scleritised part arises; Inferior volsella club-like, setae simple.  Gonostylus only moderately swollen and reducing only near tip; anal point not as thickened as in some other species and narrower at its base.

Found: China - Hainan Island.

See also Benthalia species 1Benthalia species 1aBenthalia species 2),  Benthalia species 3).

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Created: 3 March 2020
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Copyright © 2020, Jon Martin.