Thorax: Cervical sclerite
of females flat and dull, with lateral indentation and small anterolateral vertical carina; males have a slightly convex cervical sclerite
, without indentation; proepisternum with a few long, marginal ventral setae in posterior 1/2; katepisternum with double row of thin black setae, anterior row of 8 setae lower than posterior row; scutellum with 1 pair of marginal setae and 4 small dorsal setae; with small but distinct seta between postalar and dorsocentral setae.
However, the antennal sclerite
, though low, is rather conspicuous and complex, and is always fragmented (Fig.
Patellar apophysis broad, dorsally concave; RTA more than half length of tibia, with distinctly extended distal end; lateral tibial apophysis absent; cymbial furrow less than 1/3 of cymbial length; conductor short, basal lamella indistinct, dorsal apophysis about as large as conductor; median apophysis relatively large, spoon-shaped, without free standing anterior edge, distinctly separated from embolic base; embolus short, filiform, prolateral in origin, thread originating near base of tegular sclerite
There was no overlap in the length and width of the pharyngeal sclerite
and mouth hooks between instars of B.
Diagonsis.--Small species (carapace length 1.2-1.4 mm) distinguished from other congeners by a combination of the following genitalic characters: tip of the distomedial sclerite
in the male pedipalp convexe in lateral view and without additional sclerotizations, tegular sperm duct strongly curved (Fig.
length significantly increased with depth ([F.sub.2.282] = 41.278; P < 0.00001) (Fig 1).
Ptecticus australis group: Upper frons, median occipital sclerites
and vertex black; wings hyaline with darkened apex; scutum uniformly yellow, sometimes with a metallic shine, rarely black and metallic blue; vein R2+3 nearly twice as long as Rs, parallel to R1 and radial triangle (r2+3) thus virtually replaced by long and narrow, distally opened cell, cross vein M-Cu usually indistinct; M3 straight, parallel to M2 and postcubitus (CuP) unpigmented, hyaline, often indistinct.
nanum, but the latero-posterior projections of the genital sclerites
were not clearly visible due to the slides' poor condition, and it may belong to the flavescens, turbinatum, or osborni groups because of the penis barbed.
The arch sclerite
is connected to the inner surface of the zyoma by a single medial sclerification;
Penis firm, consisting of single sclerite
; basal capsule discrete and T-shaped.
Eighth tergite modified into a pair of elongate sclerites
much longer than preceding tergite, only vestiture on each sclerite
a single trichoid sensilla anteriorly and a row of setae posteriorly; 2nd to 6th sternites rectangular, narrower than tergites, with a double posterior row of setae, lateral setae, elsewhere covered with scales, except near anterior margin, with pair of closely set anterior trichoid sensilla; seventh stemite similarly shaped with anterior pair of trichoid sensilla, single row of posterior setae, lateral setae, elsewhere covered with scales, except at basal third; eighth stemite unsclerotized.
(6) Dorsal cornua not clearly 8-shaped (Figure 3(a)) and tip shape of the intermediate sclerite
apparently truncated (Figure 3(c))